./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr.3_overflow.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.3_overflow.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 e5878b7d2af5fd4b66050c0dbed52215fb6ea8477622dc26391a98be7bc7f1ca --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 08:16:30,355 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 08:16:30,458 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 08:16:30,464 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 08:16:30,465 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 08:16:30,494 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 08:16:30,496 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 08:16:30,496 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 08:16:30,497 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 08:16:30,498 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 08:16:30,498 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 08:16:30,498 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 08:16:30,499 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 08:16:30,501 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 08:16:30,502 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 08:16:30,502 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 08:16:30,502 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 08:16:30,503 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 08:16:30,503 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 08:16:30,503 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 08:16:30,507 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 08:16:30,508 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 08:16:30,508 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 08:16:30,508 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 08:16:30,508 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 08:16:30,509 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 08:16:30,509 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 08:16:30,509 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 08:16:30,509 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 08:16:30,510 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 08:16:30,510 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 08:16:30,510 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 08:16:30,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 08:16:30,511 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 08:16:30,511 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 08:16:30,514 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 08:16:30,515 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 08:16:30,515 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 08:16:30,515 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 08:16:30,515 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 08:16:30,516 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 08:16:30,517 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 08:16:30,517 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e5878b7d2af5fd4b66050c0dbed52215fb6ea8477622dc26391a98be7bc7f1ca [2024-11-16 08:16:30,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 08:16:30,799 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 08:16:30,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 08:16:30,804 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 08:16:30,804 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 08:16:30,806 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c [2024-11-16 08:16:32,277 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 08:16:32,484 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 08:16:32,485 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c [2024-11-16 08:16:32,493 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8937f5254/d322e30d13c448819ce9cdf0dac4f7de/FLAG0c9cca964 [2024-11-16 08:16:32,504 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8937f5254/d322e30d13c448819ce9cdf0dac4f7de [2024-11-16 08:16:32,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 08:16:32,507 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 08:16:32,508 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 08:16:32,508 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 08:16:32,512 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 08:16:32,512 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:16:32" (1/1) ... [2024-11-16 08:16:32,513 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16a82568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:32, skipping insertion in model container [2024-11-16 08:16:32,513 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:16:32" (1/1) ... [2024-11-16 08:16:32,541 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 08:16:32,777 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.3_overflow.ufo.UNBOUNDED.pals.c[6117,6130] [2024-11-16 08:16:32,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 08:16:32,788 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 08:16:32,825 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.3_overflow.ufo.UNBOUNDED.pals.c[6117,6130] [2024-11-16 08:16:32,829 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 08:16:32,847 INFO L204 MainTranslator]: Completed translation [2024-11-16 08:16:32,847 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:32 WrapperNode [2024-11-16 08:16:32,847 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 08:16:32,848 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 08:16:32,849 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 08:16:32,849 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 08:16:32,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:32" (1/1) ... [2024-11-16 08:16:32,862 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:32" (1/1) ... [2024-11-16 08:16:32,885 INFO L138 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 219 [2024-11-16 08:16:32,886 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 08:16:32,886 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 08:16:32,887 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 08:16:32,887 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 08:16:32,896 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:32" (1/1) ... [2024-11-16 08:16:32,897 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:32" (1/1) ... [2024-11-16 08:16:32,899 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:32" (1/1) ... [2024-11-16 08:16:32,910 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 08:16:32,910 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:32" (1/1) ... [2024-11-16 08:16:32,911 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:32" (1/1) ... [2024-11-16 08:16:32,918 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:32" (1/1) ... [2024-11-16 08:16:32,919 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:32" (1/1) ... [2024-11-16 08:16:32,920 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:32" (1/1) ... [2024-11-16 08:16:32,925 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:32" (1/1) ... [2024-11-16 08:16:32,928 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 08:16:32,928 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 08:16:32,932 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 08:16:32,932 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 08:16:32,933 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:32" (1/1) ... [2024-11-16 08:16:32,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 08:16:32,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:16:32,963 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 08:16:32,965 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 08:16:33,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 08:16:33,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 08:16:33,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 08:16:33,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 08:16:33,074 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 08:16:33,076 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 08:16:33,359 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2024-11-16 08:16:33,359 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 08:16:33,371 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 08:16:33,371 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 08:16:33,372 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 08:16:33 BoogieIcfgContainer [2024-11-16 08:16:33,372 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 08:16:33,374 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 08:16:33,374 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 08:16:33,378 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 08:16:33,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:16:32" (1/3) ... [2024-11-16 08:16:33,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f1e378c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:16:33, skipping insertion in model container [2024-11-16 08:16:33,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:32" (2/3) ... [2024-11-16 08:16:33,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f1e378c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:16:33, skipping insertion in model container [2024-11-16 08:16:33,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 08:16:33" (3/3) ... [2024-11-16 08:16:33,381 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c [2024-11-16 08:16:33,396 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 08:16:33,397 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 08:16:33,456 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 08:16:33,462 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;@2fc489b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 08:16:33,463 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 08:16:33,467 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 58 states have (on average 1.6551724137931034) internal successors, (96), 59 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 08:16:33,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-16 08:16:33,473 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:33,474 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] [2024-11-16 08:16:33,475 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:33,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:33,480 INFO L85 PathProgramCache]: Analyzing trace with hash -398251884, now seen corresponding path program 1 times [2024-11-16 08:16:33,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:33,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834271106] [2024-11-16 08:16:33,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:33,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:33,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:33,734 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 08:16:33,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:33,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834271106] [2024-11-16 08:16:33,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834271106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:33,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:33,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 08:16:33,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531596699] [2024-11-16 08:16:33,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:33,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 08:16:33,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:33,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 08:16:33,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 08:16:33,826 INFO L87 Difference]: Start difference. First operand has 60 states, 58 states have (on average 1.6551724137931034) internal successors, (96), 59 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) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 08:16:33,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:33,860 INFO L93 Difference]: Finished difference Result 94 states and 150 transitions. [2024-11-16 08:16:33,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 08:16:33,893 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2024-11-16 08:16:33,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:33,908 INFO L225 Difference]: With dead ends: 94 [2024-11-16 08:16:33,910 INFO L226 Difference]: Without dead ends: 55 [2024-11-16 08:16:33,914 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 08:16:33,919 INFO L432 NwaCegarLoop]: 88 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, 88 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 08:16:33,920 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:33,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-16 08:16:33,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-11-16 08:16:33,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.6296296296296295) internal successors, (88), 54 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 08:16:33,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 88 transitions. [2024-11-16 08:16:33,957 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 88 transitions. Word has length 21 [2024-11-16 08:16:33,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:33,958 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 88 transitions. [2024-11-16 08:16:33,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 08:16:33,958 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 88 transitions. [2024-11-16 08:16:33,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-16 08:16:33,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:33,960 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] [2024-11-16 08:16:33,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 08:16:33,960 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:33,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:33,961 INFO L85 PathProgramCache]: Analyzing trace with hash -908786061, now seen corresponding path program 1 times [2024-11-16 08:16:33,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:33,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280504856] [2024-11-16 08:16:33,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:33,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:34,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:34,240 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 08:16:34,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:34,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280504856] [2024-11-16 08:16:34,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280504856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:34,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:34,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 08:16:34,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43994438] [2024-11-16 08:16:34,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:34,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 08:16:34,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:34,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 08:16:34,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:16:34,246 INFO L87 Difference]: Start difference. First operand 55 states and 88 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 08:16:34,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:34,305 INFO L93 Difference]: Finished difference Result 92 states and 142 transitions. [2024-11-16 08:16:34,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 08:16:34,306 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2024-11-16 08:16:34,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:34,307 INFO L225 Difference]: With dead ends: 92 [2024-11-16 08:16:34,308 INFO L226 Difference]: Without dead ends: 55 [2024-11-16 08:16:34,309 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 08:16:34,310 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 0 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:34,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 323 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:34,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-16 08:16:34,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-11-16 08:16:34,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 54 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 08:16:34,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 72 transitions. [2024-11-16 08:16:34,321 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 72 transitions. Word has length 21 [2024-11-16 08:16:34,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:34,321 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 72 transitions. [2024-11-16 08:16:34,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 08:16:34,321 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 72 transitions. [2024-11-16 08:16:34,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-16 08:16:34,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:34,322 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] [2024-11-16 08:16:34,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 08:16:34,323 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:34,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:34,325 INFO L85 PathProgramCache]: Analyzing trace with hash 898382718, now seen corresponding path program 1 times [2024-11-16 08:16:34,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:34,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174155700] [2024-11-16 08:16:34,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:34,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:34,485 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 08:16:34,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:34,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174155700] [2024-11-16 08:16:34,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174155700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:34,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:34,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 08:16:34,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241472792] [2024-11-16 08:16:34,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:34,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 08:16:34,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:34,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 08:16:34,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:16:34,492 INFO L87 Difference]: Start difference. First operand 55 states and 72 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:34,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:34,647 INFO L93 Difference]: Finished difference Result 253 states and 372 transitions. [2024-11-16 08:16:34,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 08:16:34,648 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-16 08:16:34,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:34,650 INFO L225 Difference]: With dead ends: 253 [2024-11-16 08:16:34,651 INFO L226 Difference]: Without dead ends: 220 [2024-11-16 08:16:34,654 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-16 08:16:34,655 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 288 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:34,656 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 456 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:16:34,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-16 08:16:34,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 85. [2024-11-16 08:16:34,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.4047619047619047) internal successors, (118), 84 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 08:16:34,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 118 transitions. [2024-11-16 08:16:34,680 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 118 transitions. Word has length 36 [2024-11-16 08:16:34,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:34,681 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 118 transitions. [2024-11-16 08:16:34,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:34,681 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 118 transitions. [2024-11-16 08:16:34,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-16 08:16:34,682 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:34,682 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] [2024-11-16 08:16:34,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 08:16:34,684 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:34,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:34,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1948241280, now seen corresponding path program 1 times [2024-11-16 08:16:34,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:34,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639537521] [2024-11-16 08:16:34,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:34,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:34,930 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 08:16:34,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:34,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639537521] [2024-11-16 08:16:34,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639537521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:34,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:34,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 08:16:34,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588530007] [2024-11-16 08:16:34,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:34,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 08:16:34,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:34,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 08:16:34,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:16:34,934 INFO L87 Difference]: Start difference. First operand 85 states and 118 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:35,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:35,018 INFO L93 Difference]: Finished difference Result 151 states and 216 transitions. [2024-11-16 08:16:35,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 08:16:35,019 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-16 08:16:35,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:35,020 INFO L225 Difference]: With dead ends: 151 [2024-11-16 08:16:35,020 INFO L226 Difference]: Without dead ends: 88 [2024-11-16 08:16:35,021 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:16:35,022 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 106 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:35,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 159 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:35,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-16 08:16:35,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 85. [2024-11-16 08:16:35,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.3928571428571428) internal successors, (117), 84 states have internal predecessors, (117), 0 states have call successors, (0), 0 states 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 08:16:35,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 117 transitions. [2024-11-16 08:16:35,029 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 117 transitions. Word has length 38 [2024-11-16 08:16:35,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:35,030 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 117 transitions. [2024-11-16 08:16:35,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:35,030 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 117 transitions. [2024-11-16 08:16:35,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-16 08:16:35,031 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:35,031 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] [2024-11-16 08:16:35,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 08:16:35,032 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:35,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:35,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1457881668, now seen corresponding path program 1 times [2024-11-16 08:16:35,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:35,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412240897] [2024-11-16 08:16:35,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:35,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:35,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:35,122 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 08:16:35,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:35,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412240897] [2024-11-16 08:16:35,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412240897] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:35,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:35,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:16:35,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089214836] [2024-11-16 08:16:35,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:35,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:16:35,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:35,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:16:35,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:16:35,125 INFO L87 Difference]: Start difference. First operand 85 states and 117 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:35,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:35,145 INFO L93 Difference]: Finished difference Result 199 states and 287 transitions. [2024-11-16 08:16:35,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:16:35,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-16 08:16:35,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:35,149 INFO L225 Difference]: With dead ends: 199 [2024-11-16 08:16:35,149 INFO L226 Difference]: Without dead ends: 136 [2024-11-16 08:16:35,149 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 08:16:35,150 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 29 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 123 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 08:16:35,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 123 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:35,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-16 08:16:35,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 133. [2024-11-16 08:16:35,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.4166666666666667) internal successors, (187), 132 states have internal predecessors, (187), 0 states have call successors, (0), 0 states 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 08:16:35,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 187 transitions. [2024-11-16 08:16:35,167 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 187 transitions. Word has length 39 [2024-11-16 08:16:35,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:35,168 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 187 transitions. [2024-11-16 08:16:35,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:35,169 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 187 transitions. [2024-11-16 08:16:35,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-16 08:16:35,170 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:35,170 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] [2024-11-16 08:16:35,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 08:16:35,171 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:35,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:35,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1684162466, now seen corresponding path program 1 times [2024-11-16 08:16:35,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:35,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968906408] [2024-11-16 08:16:35,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:35,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:35,226 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 08:16:35,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:35,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968906408] [2024-11-16 08:16:35,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968906408] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:35,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:35,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:16:35,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350459778] [2024-11-16 08:16:35,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:35,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:16:35,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:35,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:16:35,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:16:35,229 INFO L87 Difference]: Start difference. First operand 133 states and 187 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:35,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:35,243 INFO L93 Difference]: Finished difference Result 254 states and 367 transitions. [2024-11-16 08:16:35,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:16:35,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-16 08:16:35,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:35,245 INFO L225 Difference]: With dead ends: 254 [2024-11-16 08:16:35,245 INFO L226 Difference]: Without dead ends: 191 [2024-11-16 08:16:35,246 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 08:16:35,247 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 39 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:35,247 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 157 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:35,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-16 08:16:35,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 188. [2024-11-16 08:16:35,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.427807486631016) internal successors, (267), 187 states have internal predecessors, (267), 0 states have call successors, (0), 0 states 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 08:16:35,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 267 transitions. [2024-11-16 08:16:35,257 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 267 transitions. Word has length 40 [2024-11-16 08:16:35,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:35,257 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 267 transitions. [2024-11-16 08:16:35,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:35,258 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 267 transitions. [2024-11-16 08:16:35,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-16 08:16:35,259 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:35,259 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] [2024-11-16 08:16:35,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 08:16:35,259 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:35,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:35,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1669712610, now seen corresponding path program 1 times [2024-11-16 08:16:35,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:35,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983964491] [2024-11-16 08:16:35,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:35,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:35,318 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 08:16:35,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:35,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983964491] [2024-11-16 08:16:35,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983964491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:35,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:35,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:16:35,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139593555] [2024-11-16 08:16:35,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:35,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:16:35,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:35,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:16:35,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:16:35,322 INFO L87 Difference]: Start difference. First operand 188 states and 267 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:35,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:35,345 INFO L93 Difference]: Finished difference Result 490 states and 709 transitions. [2024-11-16 08:16:35,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:16:35,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-16 08:16:35,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:35,347 INFO L225 Difference]: With dead ends: 490 [2024-11-16 08:16:35,348 INFO L226 Difference]: Without dead ends: 327 [2024-11-16 08:16:35,349 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 08:16:35,350 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 37 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:35,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 163 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:35,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2024-11-16 08:16:35,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 324. [2024-11-16 08:16:35,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 323 states have (on average 1.4210526315789473) internal successors, (459), 323 states have internal predecessors, (459), 0 states have call successors, (0), 0 states 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 08:16:35,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 459 transitions. [2024-11-16 08:16:35,369 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 459 transitions. Word has length 40 [2024-11-16 08:16:35,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:35,369 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 459 transitions. [2024-11-16 08:16:35,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:35,369 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 459 transitions. [2024-11-16 08:16:35,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-16 08:16:35,370 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:35,370 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] [2024-11-16 08:16:35,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 08:16:35,371 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:35,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:35,371 INFO L85 PathProgramCache]: Analyzing trace with hash -533651934, now seen corresponding path program 1 times [2024-11-16 08:16:35,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:35,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010618750] [2024-11-16 08:16:35,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:35,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:35,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:35,413 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 08:16:35,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:35,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010618750] [2024-11-16 08:16:35,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010618750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:35,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:35,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:16:35,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327788330] [2024-11-16 08:16:35,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:35,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:16:35,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:35,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:16:35,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:16:35,415 INFO L87 Difference]: Start difference. First operand 324 states and 459 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:35,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:35,436 INFO L93 Difference]: Finished difference Result 874 states and 1243 transitions. [2024-11-16 08:16:35,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:16:35,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-16 08:16:35,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:35,441 INFO L225 Difference]: With dead ends: 874 [2024-11-16 08:16:35,441 INFO L226 Difference]: Without dead ends: 575 [2024-11-16 08:16:35,441 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 08:16:35,442 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 35 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:35,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 165 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:35,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2024-11-16 08:16:35,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 572. [2024-11-16 08:16:35,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 571 states have (on average 1.3922942206654991) internal successors, (795), 571 states have internal predecessors, (795), 0 states have call successors, (0), 0 states 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 08:16:35,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 795 transitions. [2024-11-16 08:16:35,465 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 795 transitions. Word has length 40 [2024-11-16 08:16:35,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:35,465 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 795 transitions. [2024-11-16 08:16:35,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:35,466 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 795 transitions. [2024-11-16 08:16:35,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-16 08:16:35,466 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:35,467 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] [2024-11-16 08:16:35,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 08:16:35,467 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:35,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:35,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1057928989, now seen corresponding path program 1 times [2024-11-16 08:16:35,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:35,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110958212] [2024-11-16 08:16:35,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:35,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:35,722 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 08:16:35,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:35,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110958212] [2024-11-16 08:16:35,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110958212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:35,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:35,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 08:16:35,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96633370] [2024-11-16 08:16:35,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:35,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 08:16:35,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:35,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 08:16:35,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 08:16:35,725 INFO L87 Difference]: Start difference. First operand 572 states and 795 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:35,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:35,776 INFO L93 Difference]: Finished difference Result 623 states and 861 transitions. [2024-11-16 08:16:35,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 08:16:35,777 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-16 08:16:35,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:35,779 INFO L225 Difference]: With dead ends: 623 [2024-11-16 08:16:35,779 INFO L226 Difference]: Without dead ends: 620 [2024-11-16 08:16:35,780 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 08:16:35,782 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:35,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 449 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:35,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2024-11-16 08:16:35,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 620. [2024-11-16 08:16:35,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 619 states have (on average 1.3554119547657513) internal successors, (839), 619 states have internal predecessors, (839), 0 states have call successors, (0), 0 states 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 08:16:35,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 839 transitions. [2024-11-16 08:16:35,805 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 839 transitions. Word has length 40 [2024-11-16 08:16:35,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:35,806 INFO L471 AbstractCegarLoop]: Abstraction has 620 states and 839 transitions. [2024-11-16 08:16:35,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:35,806 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 839 transitions. [2024-11-16 08:16:35,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-16 08:16:35,811 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:35,811 INFO L215 NwaCegarLoop]: trace histogram [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 08:16:35,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 08:16:35,812 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:35,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:35,812 INFO L85 PathProgramCache]: Analyzing trace with hash 79065365, now seen corresponding path program 1 times [2024-11-16 08:16:35,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:35,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847861004] [2024-11-16 08:16:35,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:35,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:35,925 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 08:16:35,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:35,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847861004] [2024-11-16 08:16:35,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847861004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:35,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:35,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 08:16:35,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148524828] [2024-11-16 08:16:35,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:35,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 08:16:35,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:35,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 08:16:35,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:16:35,927 INFO L87 Difference]: Start difference. First operand 620 states and 839 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 08:16:36,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:36,010 INFO L93 Difference]: Finished difference Result 2388 states and 3251 transitions. [2024-11-16 08:16:36,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 08:16:36,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 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 57 [2024-11-16 08:16:36,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:36,017 INFO L225 Difference]: With dead ends: 2388 [2024-11-16 08:16:36,017 INFO L226 Difference]: Without dead ends: 1953 [2024-11-16 08:16:36,018 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 08:16:36,018 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 173 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:36,019 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 299 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:36,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1953 states. [2024-11-16 08:16:36,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1953 to 1136. [2024-11-16 08:16:36,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1135 states have (on average 1.3524229074889869) internal successors, (1535), 1135 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states 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 08:16:36,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1535 transitions. [2024-11-16 08:16:36,051 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1535 transitions. Word has length 57 [2024-11-16 08:16:36,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:36,051 INFO L471 AbstractCegarLoop]: Abstraction has 1136 states and 1535 transitions. [2024-11-16 08:16:36,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 08:16:36,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1535 transitions. [2024-11-16 08:16:36,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-16 08:16:36,052 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:36,053 INFO L215 NwaCegarLoop]: trace histogram [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 08:16:36,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 08:16:36,053 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:36,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:36,053 INFO L85 PathProgramCache]: Analyzing trace with hash 64615509, now seen corresponding path program 1 times [2024-11-16 08:16:36,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:36,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664596927] [2024-11-16 08:16:36,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:36,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:36,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:36,177 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 08:16:36,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:36,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664596927] [2024-11-16 08:16:36,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664596927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:36,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:36,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 08:16:36,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414288320] [2024-11-16 08:16:36,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:36,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 08:16:36,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:36,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 08:16:36,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:16:36,180 INFO L87 Difference]: Start difference. First operand 1136 states and 1535 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 08:16:36,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:36,287 INFO L93 Difference]: Finished difference Result 2980 states and 4055 transitions. [2024-11-16 08:16:36,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 08:16:36,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 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 57 [2024-11-16 08:16:36,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:36,295 INFO L225 Difference]: With dead ends: 2980 [2024-11-16 08:16:36,296 INFO L226 Difference]: Without dead ends: 2385 [2024-11-16 08:16:36,297 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 08:16:36,297 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 170 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:36,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 297 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:36,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2024-11-16 08:16:36,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 1944. [2024-11-16 08:16:36,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1944 states, 1943 states have (on average 1.3499742665980443) internal successors, (2623), 1943 states have internal predecessors, (2623), 0 states have call successors, (0), 0 states 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 08:16:36,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1944 states to 1944 states and 2623 transitions. [2024-11-16 08:16:36,353 INFO L78 Accepts]: Start accepts. Automaton has 1944 states and 2623 transitions. Word has length 57 [2024-11-16 08:16:36,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:36,354 INFO L471 AbstractCegarLoop]: Abstraction has 1944 states and 2623 transitions. [2024-11-16 08:16:36,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 08:16:36,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1944 states and 2623 transitions. [2024-11-16 08:16:36,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-16 08:16:36,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:36,355 INFO L215 NwaCegarLoop]: trace histogram [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 08:16:36,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 08:16:36,355 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:36,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:36,356 INFO L85 PathProgramCache]: Analyzing trace with hash -2138749035, now seen corresponding path program 1 times [2024-11-16 08:16:36,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:36,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44382589] [2024-11-16 08:16:36,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:36,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:36,463 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 08:16:36,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:36,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44382589] [2024-11-16 08:16:36,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44382589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:36,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:36,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 08:16:36,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046854074] [2024-11-16 08:16:36,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:36,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 08:16:36,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:36,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 08:16:36,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:16:36,467 INFO L87 Difference]: Start difference. First operand 1944 states and 2623 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 08:16:36,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:36,567 INFO L93 Difference]: Finished difference Result 3572 states and 4855 transitions. [2024-11-16 08:16:36,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 08:16:36,568 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 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 57 [2024-11-16 08:16:36,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:36,579 INFO L225 Difference]: With dead ends: 3572 [2024-11-16 08:16:36,579 INFO L226 Difference]: Without dead ends: 2977 [2024-11-16 08:16:36,581 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 08:16:36,582 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 179 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 296 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 08:16:36,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 296 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:36,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2977 states. [2024-11-16 08:16:36,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2977 to 2536. [2024-11-16 08:16:36,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2536 states, 2535 states have (on average 1.3502958579881656) internal successors, (3423), 2535 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states 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 08:16:36,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2536 states to 2536 states and 3423 transitions. [2024-11-16 08:16:36,704 INFO L78 Accepts]: Start accepts. Automaton has 2536 states and 3423 transitions. Word has length 57 [2024-11-16 08:16:36,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:36,704 INFO L471 AbstractCegarLoop]: Abstraction has 2536 states and 3423 transitions. [2024-11-16 08:16:36,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 08:16:36,704 INFO L276 IsEmpty]: Start isEmpty. Operand 2536 states and 3423 transitions. [2024-11-16 08:16:36,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-16 08:16:36,705 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:36,705 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] [2024-11-16 08:16:36,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 08:16:36,705 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:36,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:36,706 INFO L85 PathProgramCache]: Analyzing trace with hash 961764951, now seen corresponding path program 1 times [2024-11-16 08:16:36,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:36,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064797754] [2024-11-16 08:16:36,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:36,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:36,796 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 08:16:36,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:36,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064797754] [2024-11-16 08:16:36,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064797754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:36,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:36,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:16:36,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881907283] [2024-11-16 08:16:36,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:36,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:16:36,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:36,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:16:36,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:16:36,798 INFO L87 Difference]: Start difference. First operand 2536 states and 3423 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 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 08:16:36,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:36,853 INFO L93 Difference]: Finished difference Result 5050 states and 6823 transitions. [2024-11-16 08:16:36,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:16:36,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 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 59 [2024-11-16 08:16:36,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:36,862 INFO L225 Difference]: With dead ends: 5050 [2024-11-16 08:16:36,862 INFO L226 Difference]: Without dead ends: 2539 [2024-11-16 08:16:36,865 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 08:16:36,865 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 28 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:36,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 152 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:36,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2539 states. [2024-11-16 08:16:36,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2539 to 2536. [2024-11-16 08:16:36,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2536 states, 2535 states have (on average 1.3305719921104537) internal successors, (3373), 2535 states have internal predecessors, (3373), 0 states have call successors, (0), 0 states 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 08:16:36,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2536 states to 2536 states and 3373 transitions. [2024-11-16 08:16:36,936 INFO L78 Accepts]: Start accepts. Automaton has 2536 states and 3373 transitions. Word has length 59 [2024-11-16 08:16:36,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:36,936 INFO L471 AbstractCegarLoop]: Abstraction has 2536 states and 3373 transitions. [2024-11-16 08:16:36,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 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 08:16:36,936 INFO L276 IsEmpty]: Start isEmpty. Operand 2536 states and 3373 transitions. [2024-11-16 08:16:36,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-16 08:16:36,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:36,937 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] [2024-11-16 08:16:36,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 08:16:36,938 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:36,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:36,938 INFO L85 PathProgramCache]: Analyzing trace with hash -39644777, now seen corresponding path program 1 times [2024-11-16 08:16:36,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:36,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223244371] [2024-11-16 08:16:36,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:36,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:37,010 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 08:16:37,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:37,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223244371] [2024-11-16 08:16:37,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223244371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:37,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:37,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:16:37,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259821607] [2024-11-16 08:16:37,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:37,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:16:37,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:37,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:16:37,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:16:37,011 INFO L87 Difference]: Start difference. First operand 2536 states and 3373 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 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 08:16:37,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:37,076 INFO L93 Difference]: Finished difference Result 3531 states and 4709 transitions. [2024-11-16 08:16:37,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:16:37,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 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 59 [2024-11-16 08:16:37,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:37,081 INFO L225 Difference]: With dead ends: 3531 [2024-11-16 08:16:37,081 INFO L226 Difference]: Without dead ends: 1020 [2024-11-16 08:16:37,084 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 08:16:37,085 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 24 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:37,085 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 149 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:37,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2024-11-16 08:16:37,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 1010. [2024-11-16 08:16:37,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1010 states, 1009 states have (on average 1.3211100099108029) internal successors, (1333), 1009 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states 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 08:16:37,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1333 transitions. [2024-11-16 08:16:37,121 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1333 transitions. Word has length 59 [2024-11-16 08:16:37,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:37,121 INFO L471 AbstractCegarLoop]: Abstraction has 1010 states and 1333 transitions. [2024-11-16 08:16:37,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 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 08:16:37,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1333 transitions. [2024-11-16 08:16:37,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-16 08:16:37,123 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:37,123 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] [2024-11-16 08:16:37,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 08:16:37,123 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:37,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:37,124 INFO L85 PathProgramCache]: Analyzing trace with hash -2132976391, now seen corresponding path program 1 times [2024-11-16 08:16:37,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:37,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6937430] [2024-11-16 08:16:37,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:37,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:37,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:37,210 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 08:16:37,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:37,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6937430] [2024-11-16 08:16:37,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6937430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:37,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:37,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:16:37,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948018524] [2024-11-16 08:16:37,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:37,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:16:37,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:37,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:16:37,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:16:37,213 INFO L87 Difference]: Start difference. First operand 1010 states and 1333 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 08:16:37,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:37,235 INFO L93 Difference]: Finished difference Result 1502 states and 1985 transitions. [2024-11-16 08:16:37,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:16:37,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2024-11-16 08:16:37,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:37,238 INFO L225 Difference]: With dead ends: 1502 [2024-11-16 08:16:37,238 INFO L226 Difference]: Without dead ends: 527 [2024-11-16 08:16:37,239 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 08:16:37,240 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 22 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:37,240 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 128 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:37,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2024-11-16 08:16:37,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 524. [2024-11-16 08:16:37,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 523 states have (on average 1.2925430210325048) internal successors, (676), 523 states have internal predecessors, (676), 0 states have call successors, (0), 0 states 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 08:16:37,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 676 transitions. [2024-11-16 08:16:37,255 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 676 transitions. Word has length 61 [2024-11-16 08:16:37,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:37,256 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 676 transitions. [2024-11-16 08:16:37,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 08:16:37,256 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 676 transitions. [2024-11-16 08:16:37,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-16 08:16:37,258 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:37,259 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] [2024-11-16 08:16:37,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 08:16:37,259 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:37,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:37,260 INFO L85 PathProgramCache]: Analyzing trace with hash -764247296, now seen corresponding path program 1 times [2024-11-16 08:16:37,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:37,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649946997] [2024-11-16 08:16:37,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:37,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:37,667 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 08:16:37,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:37,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649946997] [2024-11-16 08:16:37,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649946997] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:16:37,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774273878] [2024-11-16 08:16:37,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:37,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:16:37,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:16:37,673 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 08:16:37,676 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 08:16:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:37,950 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-16 08:16:37,956 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:16:39,763 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 08:16:39,764 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:16:41,801 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 08:16:41,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774273878] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:16:41,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:16:41,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 17, 16] total 38 [2024-11-16 08:16:41,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637365119] [2024-11-16 08:16:41,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:16:41,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-16 08:16:41,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:41,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-16 08:16:41,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1160, Unknown=0, NotChecked=0, Total=1406 [2024-11-16 08:16:41,805 INFO L87 Difference]: Start difference. First operand 524 states and 676 transitions. Second operand has 38 states, 38 states have (on average 4.447368421052632) internal successors, (169), 38 states have internal predecessors, (169), 0 states have call successors, (0), 0 states 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 08:16:46,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:46,020 INFO L93 Difference]: Finished difference Result 4358 states and 5689 transitions. [2024-11-16 08:16:46,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-16 08:16:46,020 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.447368421052632) internal successors, (169), 38 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-16 08:16:46,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:46,032 INFO L225 Difference]: With dead ends: 4358 [2024-11-16 08:16:46,032 INFO L226 Difference]: Without dead ends: 3869 [2024-11-16 08:16:46,035 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2857 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=2135, Invalid=7177, Unknown=0, NotChecked=0, Total=9312 [2024-11-16 08:16:46,036 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 2365 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2365 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:46,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2365 Valid, 1151 Invalid, 1068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 08:16:46,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3869 states. [2024-11-16 08:16:46,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3869 to 1466. [2024-11-16 08:16:46,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1466 states, 1465 states have (on average 1.2744027303754266) internal successors, (1867), 1465 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states 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 08:16:46,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 1867 transitions. [2024-11-16 08:16:46,117 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 1867 transitions. Word has length 63 [2024-11-16 08:16:46,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:46,118 INFO L471 AbstractCegarLoop]: Abstraction has 1466 states and 1867 transitions. [2024-11-16 08:16:46,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.447368421052632) internal successors, (169), 38 states have internal predecessors, (169), 0 states have call successors, (0), 0 states 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 08:16:46,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 1867 transitions. [2024-11-16 08:16:46,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-16 08:16:46,118 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:46,119 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] [2024-11-16 08:16:46,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 08:16:46,319 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,SelfDestructingSolverStorable15 [2024-11-16 08:16:46,320 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:46,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:46,320 INFO L85 PathProgramCache]: Analyzing trace with hash 549749820, now seen corresponding path program 1 times [2024-11-16 08:16:46,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:46,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007212694] [2024-11-16 08:16:46,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:46,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:47,252 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 08:16:47,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:47,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007212694] [2024-11-16 08:16:47,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007212694] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:16:47,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451888328] [2024-11-16 08:16:47,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:47,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:16:47,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:16:47,255 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 08:16:47,256 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 08:16:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:47,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-16 08:16:47,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:16:51,569 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 08:16:51,570 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:16:55,218 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 08:16:55,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451888328] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:16:55,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:16:55,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 24, 22] total 51 [2024-11-16 08:16:55,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188893135] [2024-11-16 08:16:55,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:16:55,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-16 08:16:55,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:55,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-16 08:16:55,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=2246, Unknown=0, NotChecked=0, Total=2550 [2024-11-16 08:16:55,222 INFO L87 Difference]: Start difference. First operand 1466 states and 1867 transitions. Second operand has 51 states, 51 states have (on average 3.3137254901960786) internal successors, (169), 51 states have internal predecessors, (169), 0 states have call successors, (0), 0 states 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 08:17:16,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:17:16,759 INFO L93 Difference]: Finished difference Result 10064 states and 12857 transitions. [2024-11-16 08:17:16,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2024-11-16 08:17:16,760 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.3137254901960786) internal successors, (169), 51 states have internal predecessors, (169), 0 states have call successors, (0), 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 64 [2024-11-16 08:17:16,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:17:16,797 INFO L225 Difference]: With dead ends: 10064 [2024-11-16 08:17:16,797 INFO L226 Difference]: Without dead ends: 8633 [2024-11-16 08:17:16,813 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8759 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=4901, Invalid=20539, Unknown=0, NotChecked=0, Total=25440 [2024-11-16 08:17:16,814 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 3741 mSDsluCounter, 1912 mSDsCounter, 0 mSdLazyCounter, 1938 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3741 SdHoareTripleChecker+Valid, 1993 SdHoareTripleChecker+Invalid, 2077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-16 08:17:16,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3741 Valid, 1993 Invalid, 2077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1938 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-16 08:17:16,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8633 states. [2024-11-16 08:17:16,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8633 to 1826. [2024-11-16 08:17:16,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1826 states, 1825 states have (on average 1.2663013698630137) internal successors, (2311), 1825 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states 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 08:17:16,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1826 states to 1826 states and 2311 transitions. [2024-11-16 08:17:16,980 INFO L78 Accepts]: Start accepts. Automaton has 1826 states and 2311 transitions. Word has length 64 [2024-11-16 08:17:16,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:17:16,980 INFO L471 AbstractCegarLoop]: Abstraction has 1826 states and 2311 transitions. [2024-11-16 08:17:16,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.3137254901960786) internal successors, (169), 51 states have internal predecessors, (169), 0 states have call successors, (0), 0 states 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 08:17:16,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1826 states and 2311 transitions. [2024-11-16 08:17:16,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-16 08:17:16,981 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:17:16,982 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:17:16,998 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 08:17:17,182 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,SelfDestructingSolverStorable16 [2024-11-16 08:17:17,183 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:17:17,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:17:17,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1756771680, now seen corresponding path program 1 times [2024-11-16 08:17:17,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:17:17,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033565801] [2024-11-16 08:17:17,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:17:17,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:17:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:17:18,095 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:17:18,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:17:18,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033565801] [2024-11-16 08:17:18,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033565801] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:17:18,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032480893] [2024-11-16 08:17:18,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:17:18,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:17:18,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:17:18,113 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 08:17:18,114 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 08:17:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:17:18,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-16 08:17:18,219 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:17:18,699 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:17:18,700 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:17:19,901 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:17:19,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032480893] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:17:19,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:17:19,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 13] total 41 [2024-11-16 08:17:19,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984819718] [2024-11-16 08:17:19,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:17:19,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-16 08:17:19,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:17:19,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-16 08:17:19,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1493, Unknown=0, NotChecked=0, Total=1640 [2024-11-16 08:17:19,904 INFO L87 Difference]: Start difference. First operand 1826 states and 2311 transitions. Second operand has 41 states, 41 states have (on average 4.0) internal successors, (164), 41 states have internal predecessors, (164), 0 states have call successors, (0), 0 states 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 08:17:25,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:17:25,997 INFO L93 Difference]: Finished difference Result 7181 states and 9105 transitions. [2024-11-16 08:17:25,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-11-16 08:17:25,998 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.0) internal successors, (164), 41 states have internal predecessors, (164), 0 states have call successors, (0), 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 65 [2024-11-16 08:17:25,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:17:26,008 INFO L225 Difference]: With dead ends: 7181 [2024-11-16 08:17:26,008 INFO L226 Difference]: Without dead ends: 5510 [2024-11-16 08:17:26,014 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3414 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=2691, Invalid=10649, Unknown=0, NotChecked=0, Total=13340 [2024-11-16 08:17:26,015 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 2354 mSDsluCounter, 2256 mSDsCounter, 0 mSdLazyCounter, 1943 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2354 SdHoareTripleChecker+Valid, 2400 SdHoareTripleChecker+Invalid, 2039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:17:26,015 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2354 Valid, 2400 Invalid, 2039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1943 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 08:17:26,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5510 states. [2024-11-16 08:17:26,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5510 to 2699. [2024-11-16 08:17:26,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2699 states, 2698 states have (on average 1.2616753150481839) internal successors, (3404), 2698 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states 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 08:17:26,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2699 states to 2699 states and 3404 transitions. [2024-11-16 08:17:26,231 INFO L78 Accepts]: Start accepts. Automaton has 2699 states and 3404 transitions. Word has length 65 [2024-11-16 08:17:26,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:17:26,234 INFO L471 AbstractCegarLoop]: Abstraction has 2699 states and 3404 transitions. [2024-11-16 08:17:26,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.0) internal successors, (164), 41 states have internal predecessors, (164), 0 states have call successors, (0), 0 states 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 08:17:26,235 INFO L276 IsEmpty]: Start isEmpty. Operand 2699 states and 3404 transitions. [2024-11-16 08:17:26,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-16 08:17:26,236 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:17:26,236 INFO L215 NwaCegarLoop]: trace histogram [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 08:17:26,254 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 08:17:26,436 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 08:17:26,437 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:17:26,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:17:26,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1822926882, now seen corresponding path program 1 times [2024-11-16 08:17:26,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:17:26,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167296561] [2024-11-16 08:17:26,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:17:26,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:17:26,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:17:26,551 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 08:17:26,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:17:26,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167296561] [2024-11-16 08:17:26,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167296561] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:17:26,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431974339] [2024-11-16 08:17:26,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:17:26,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:17:26,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:17:26,555 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 08:17:26,556 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 08:17:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:17:26,652 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-16 08:17:26,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:17:26,779 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 08:17:26,779 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:17:26,909 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 08:17:26,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431974339] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:17:26,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:17:26,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2024-11-16 08:17:26,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705689004] [2024-11-16 08:17:26,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:17:26,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 08:17:26,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:17:26,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 08:17:26,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 08:17:26,912 INFO L87 Difference]: Start difference. First operand 2699 states and 3404 transitions. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 08:17:27,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:17:27,229 INFO L93 Difference]: Finished difference Result 6952 states and 8630 transitions. [2024-11-16 08:17:27,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 08:17:27,230 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 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 08:17:27,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:17:27,236 INFO L225 Difference]: With dead ends: 6952 [2024-11-16 08:17:27,237 INFO L226 Difference]: Without dead ends: 4288 [2024-11-16 08:17:27,239 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-16 08:17:27,240 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 64 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:17:27,240 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 339 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:17:27,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4288 states. [2024-11-16 08:17:27,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4288 to 3987. [2024-11-16 08:17:27,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3987 states, 3986 states have (on average 1.202709483191169) internal successors, (4794), 3986 states have internal predecessors, (4794), 0 states have call successors, (0), 0 states 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 08:17:27,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3987 states to 3987 states and 4794 transitions. [2024-11-16 08:17:27,473 INFO L78 Accepts]: Start accepts. Automaton has 3987 states and 4794 transitions. Word has length 67 [2024-11-16 08:17:27,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:17:27,473 INFO L471 AbstractCegarLoop]: Abstraction has 3987 states and 4794 transitions. [2024-11-16 08:17:27,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 08:17:27,474 INFO L276 IsEmpty]: Start isEmpty. Operand 3987 states and 4794 transitions. [2024-11-16 08:17:27,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-16 08:17:27,475 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:17:27,475 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:17:27,496 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 08:17:27,680 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 08:17:27,681 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:17:27,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:17:27,681 INFO L85 PathProgramCache]: Analyzing trace with hash 770512494, now seen corresponding path program 1 times [2024-11-16 08:17:27,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:17:27,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974057265] [2024-11-16 08:17:27,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:17:27,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:17:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:17:28,228 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 25 proven. 63 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 08:17:28,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:17:28,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974057265] [2024-11-16 08:17:28,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974057265] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:17:28,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515082890] [2024-11-16 08:17:28,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:17:28,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:17:28,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:17:28,231 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 08:17:28,233 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 08:17:28,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:17:28,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-16 08:17:28,349 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:17:29,653 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 25 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:17:29,653 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:17:32,658 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 28 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:17:32,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515082890] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:17:32,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:17:32,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 18] total 42 [2024-11-16 08:17:32,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197642618] [2024-11-16 08:17:32,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:17:32,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-16 08:17:32,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:17:32,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-16 08:17:32,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1559, Unknown=0, NotChecked=0, Total=1806 [2024-11-16 08:17:32,661 INFO L87 Difference]: Start difference. First operand 3987 states and 4794 transitions. Second operand has 43 states, 43 states have (on average 6.6976744186046515) internal successors, (288), 42 states have internal predecessors, (288), 0 states have call successors, (0), 0 states 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 08:17:38,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:17:38,463 INFO L93 Difference]: Finished difference Result 15126 states and 18429 transitions. [2024-11-16 08:17:38,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-16 08:17:38,464 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 6.6976744186046515) internal successors, (288), 42 states have internal predecessors, (288), 0 states have call successors, (0), 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 107 [2024-11-16 08:17:38,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:17:38,485 INFO L225 Difference]: With dead ends: 15126 [2024-11-16 08:17:38,485 INFO L226 Difference]: Without dead ends: 12781 [2024-11-16 08:17:38,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3706 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=2337, Invalid=9219, Unknown=0, NotChecked=0, Total=11556 [2024-11-16 08:17:38,492 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 1841 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 1352 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1841 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 08:17:38,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1841 Valid, 1701 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1352 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 08:17:38,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12781 states. [2024-11-16 08:17:39,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12781 to 12126. [2024-11-16 08:17:39,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12126 states, 12125 states have (on average 1.206762886597938) internal successors, (14632), 12125 states have internal predecessors, (14632), 0 states have call successors, (0), 0 states 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 08:17:39,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12126 states to 12126 states and 14632 transitions. [2024-11-16 08:17:39,161 INFO L78 Accepts]: Start accepts. Automaton has 12126 states and 14632 transitions. Word has length 107 [2024-11-16 08:17:39,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:17:39,161 INFO L471 AbstractCegarLoop]: Abstraction has 12126 states and 14632 transitions. [2024-11-16 08:17:39,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 6.6976744186046515) internal successors, (288), 42 states have internal predecessors, (288), 0 states have call successors, (0), 0 states 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 08:17:39,162 INFO L276 IsEmpty]: Start isEmpty. Operand 12126 states and 14632 transitions. [2024-11-16 08:17:39,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-16 08:17:39,164 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:17:39,164 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:17:39,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-16 08:17:39,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:17:39,365 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:17:39,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:17:39,366 INFO L85 PathProgramCache]: Analyzing trace with hash 71493710, now seen corresponding path program 1 times [2024-11-16 08:17:39,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:17:39,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11445374] [2024-11-16 08:17:39,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:17:39,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:17:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:17:40,026 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 34 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:17:40,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:17:40,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11445374] [2024-11-16 08:17:40,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11445374] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:17:40,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642768704] [2024-11-16 08:17:40,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:17:40,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:17:40,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:17:40,028 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 08:17:40,029 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 08:17:40,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:17:40,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-16 08:17:40,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:17:40,834 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 28 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:17:40,834 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:17:42,083 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 28 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:17:42,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642768704] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:17:42,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:17:42,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 32 [2024-11-16 08:17:42,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391897129] [2024-11-16 08:17:42,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:17:42,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-16 08:17:42,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:17:42,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-16 08:17:42,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=892, Unknown=0, NotChecked=0, Total=992 [2024-11-16 08:17:42,086 INFO L87 Difference]: Start difference. First operand 12126 states and 14632 transitions. Second operand has 32 states, 32 states have (on average 8.875) internal successors, (284), 32 states have internal predecessors, (284), 0 states have call successors, (0), 0 states 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 08:17:47,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:17:47,055 INFO L93 Difference]: Finished difference Result 26271 states and 31687 transitions. [2024-11-16 08:17:47,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-16 08:17:47,055 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.875) internal successors, (284), 32 states have internal predecessors, (284), 0 states have call successors, (0), 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 107 [2024-11-16 08:17:47,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:17:47,082 INFO L225 Difference]: With dead ends: 26271 [2024-11-16 08:17:47,082 INFO L226 Difference]: Without dead ends: 15914 [2024-11-16 08:17:47,094 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2099 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1691, Invalid=7621, Unknown=0, NotChecked=0, Total=9312 [2024-11-16 08:17:47,095 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 864 mSDsluCounter, 1819 mSDsCounter, 0 mSdLazyCounter, 2184 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 2227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:17:47,095 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 1950 Invalid, 2227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2184 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-16 08:17:47,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15914 states. [2024-11-16 08:17:47,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15914 to 7870. [2024-11-16 08:17:47,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7870 states, 7869 states have (on average 1.1899860210954378) internal successors, (9364), 7869 states have internal predecessors, (9364), 0 states have call successors, (0), 0 states 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 08:17:47,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7870 states to 7870 states and 9364 transitions. [2024-11-16 08:17:47,571 INFO L78 Accepts]: Start accepts. Automaton has 7870 states and 9364 transitions. Word has length 107 [2024-11-16 08:17:47,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:17:47,571 INFO L471 AbstractCegarLoop]: Abstraction has 7870 states and 9364 transitions. [2024-11-16 08:17:47,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.875) internal successors, (284), 32 states have internal predecessors, (284), 0 states have call successors, (0), 0 states 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 08:17:47,571 INFO L276 IsEmpty]: Start isEmpty. Operand 7870 states and 9364 transitions. [2024-11-16 08:17:47,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-16 08:17:47,573 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:17:47,573 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, 1, 1, 1, 1, 1, 1, 1, 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 08:17:47,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-16 08:17:47,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:17:47,774 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:17:47,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:17:47,774 INFO L85 PathProgramCache]: Analyzing trace with hash -104152275, now seen corresponding path program 1 times [2024-11-16 08:17:47,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:17:47,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811573115] [2024-11-16 08:17:47,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:17:47,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:17:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:17:48,641 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 26 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:17:48,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:17:48,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811573115] [2024-11-16 08:17:48,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811573115] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:17:48,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138169694] [2024-11-16 08:17:48,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:17:48,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:17:48,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:17:48,644 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 08:17:48,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 08:17:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:17:48,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-16 08:17:48,772 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:17:51,719 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 26 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:17:51,719 INFO L311 TraceCheckSpWp]: Computing backward predicates...