./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label13.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/eca-rers2012/Problem17_label13.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 84be5ebe7d0e17b7dfbf14426aab6d066d24416ef8e3b409c38a918132f4bf30 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 04:16:59,782 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 04:16:59,835 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 04:16:59,838 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 04:16:59,839 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 04:16:59,853 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 04:16:59,853 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 04:16:59,854 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 04:16:59,854 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 04:16:59,854 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 04:16:59,855 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 04:16:59,855 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 04:16:59,855 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 04:16:59,856 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 04:16:59,856 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 04:16:59,856 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 04:16:59,856 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 04:16:59,857 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 04:16:59,857 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 04:16:59,857 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 04:16:59,857 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 04:16:59,861 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 04:16:59,862 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 04:16:59,862 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 04:16:59,862 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 04:16:59,862 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 04:16:59,862 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 04:16:59,863 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 04:16:59,863 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 04:16:59,863 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 04:16:59,863 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 04:16:59,863 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 04:16:59,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:16:59,864 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 04:16:59,864 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 04:16:59,864 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 04:16:59,865 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 04:16:59,865 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 04:16:59,865 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 04:16:59,865 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 04:16:59,865 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 04:16:59,866 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 04:16:59,866 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 84be5ebe7d0e17b7dfbf14426aab6d066d24416ef8e3b409c38a918132f4bf30 [2024-11-16 04:17:00,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 04:17:00,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 04:17:00,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 04:17:00,095 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 04:17:00,096 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 04:17:00,096 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label13.c [2024-11-16 04:17:01,535 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 04:17:01,814 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 04:17:01,814 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label13.c [2024-11-16 04:17:01,835 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2eb2a7f7f/987d343eb6c242edadc0f57293352260/FLAG34a62a24a [2024-11-16 04:17:01,849 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2eb2a7f7f/987d343eb6c242edadc0f57293352260 [2024-11-16 04:17:01,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 04:17:01,854 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 04:17:01,856 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 04:17:01,857 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 04:17:01,860 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 04:17:01,861 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:17:01" (1/1) ... [2024-11-16 04:17:01,862 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@508de881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:01, skipping insertion in model container [2024-11-16 04:17:01,862 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:17:01" (1/1) ... [2024-11-16 04:17:01,971 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 04:17:02,188 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label13.c[4647,4660] [2024-11-16 04:17:02,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:17:02,569 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 04:17:02,591 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label13.c[4647,4660] [2024-11-16 04:17:02,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:17:02,866 INFO L204 MainTranslator]: Completed translation [2024-11-16 04:17:02,866 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:02 WrapperNode [2024-11-16 04:17:02,866 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 04:17:02,867 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 04:17:02,867 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 04:17:02,867 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 04:17:02,876 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:02" (1/1) ... [2024-11-16 04:17:02,915 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:02" (1/1) ... [2024-11-16 04:17:03,195 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2612 [2024-11-16 04:17:03,201 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 04:17:03,201 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 04:17:03,205 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 04:17:03,205 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 04:17:03,214 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:02" (1/1) ... [2024-11-16 04:17:03,215 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:02" (1/1) ... [2024-11-16 04:17:03,256 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:02" (1/1) ... [2024-11-16 04:17:03,384 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 04:17:03,385 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:02" (1/1) ... [2024-11-16 04:17:03,385 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:02" (1/1) ... [2024-11-16 04:17:03,466 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:02" (1/1) ... [2024-11-16 04:17:03,492 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:02" (1/1) ... [2024-11-16 04:17:03,511 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:02" (1/1) ... [2024-11-16 04:17:03,524 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:02" (1/1) ... [2024-11-16 04:17:03,547 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 04:17:03,549 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 04:17:03,549 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 04:17:03,550 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 04:17:03,550 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:02" (1/1) ... [2024-11-16 04:17:03,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:17:03,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:17:03,579 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 04:17:03,583 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 04:17:03,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 04:17:03,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 04:17:03,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 04:17:03,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 04:17:03,712 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 04:17:03,713 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 04:17:06,118 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1653: havoc calculate_output_#t~ret7#1; [2024-11-16 04:17:06,259 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-16 04:17:06,259 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 04:17:06,279 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 04:17:06,280 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 04:17:06,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:17:06 BoogieIcfgContainer [2024-11-16 04:17:06,280 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 04:17:06,281 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 04:17:06,282 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 04:17:06,284 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 04:17:06,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:17:01" (1/3) ... [2024-11-16 04:17:06,285 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de327a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:17:06, skipping insertion in model container [2024-11-16 04:17:06,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:17:02" (2/3) ... [2024-11-16 04:17:06,285 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de327a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:17:06, skipping insertion in model container [2024-11-16 04:17:06,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:17:06" (3/3) ... [2024-11-16 04:17:06,286 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label13.c [2024-11-16 04:17:06,300 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 04:17:06,300 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 04:17:06,352 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 04:17:06,357 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;@73770771, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 04:17:06,358 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 04:17:06,363 INFO L276 IsEmpty]: Start isEmpty. Operand has 593 states, 591 states have (on average 1.8020304568527918) internal successors, (1065), 592 states have internal predecessors, (1065), 0 states have call successors, (0), 0 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 04:17:06,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-16 04:17:06,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:06,369 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] [2024-11-16 04:17:06,370 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:06,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:06,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1930790316, now seen corresponding path program 1 times [2024-11-16 04:17:06,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:06,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129836420] [2024-11-16 04:17:06,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:06,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:06,592 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 04:17:06,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:06,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129836420] [2024-11-16 04:17:06,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129836420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:06,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:17:06,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:17:06,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142764213] [2024-11-16 04:17:06,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:06,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:17:06,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:06,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:17:06,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:17:06,616 INFO L87 Difference]: Start difference. First operand has 593 states, 591 states have (on average 1.8020304568527918) internal successors, (1065), 592 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 04:17:08,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:08,695 INFO L93 Difference]: Finished difference Result 1648 states and 3030 transitions. [2024-11-16 04:17:08,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:17:08,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2024-11-16 04:17:08,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:08,718 INFO L225 Difference]: With dead ends: 1648 [2024-11-16 04:17:08,718 INFO L226 Difference]: Without dead ends: 978 [2024-11-16 04:17:08,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:17:08,731 INFO L432 NwaCegarLoop]: 477 mSDtfsCounter, 460 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:08,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 555 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-16 04:17:08,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2024-11-16 04:17:08,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 975. [2024-11-16 04:17:08,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 974 states have (on average 1.5061601642710472) internal successors, (1467), 974 states have internal predecessors, (1467), 0 states have call successors, (0), 0 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 04:17:08,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1467 transitions. [2024-11-16 04:17:08,797 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1467 transitions. Word has length 32 [2024-11-16 04:17:08,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:08,798 INFO L471 AbstractCegarLoop]: Abstraction has 975 states and 1467 transitions. [2024-11-16 04:17:08,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 04:17:08,798 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1467 transitions. [2024-11-16 04:17:08,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-16 04:17:08,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:08,804 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:17:08,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 04:17:08,804 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:08,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:08,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1497242255, now seen corresponding path program 1 times [2024-11-16 04:17:08,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:08,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885683574] [2024-11-16 04:17:08,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:08,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:09,081 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:17:09,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:09,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885683574] [2024-11-16 04:17:09,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885683574] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:09,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:17:09,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:17:09,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729774802] [2024-11-16 04:17:09,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:09,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:17:09,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:09,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:17:09,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:17:09,085 INFO L87 Difference]: Start difference. First operand 975 states and 1467 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 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 04:17:10,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:10,845 INFO L93 Difference]: Finished difference Result 2822 states and 4250 transitions. [2024-11-16 04:17:10,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:17:10,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2024-11-16 04:17:10,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:10,861 INFO L225 Difference]: With dead ends: 2822 [2024-11-16 04:17:10,861 INFO L226 Difference]: Without dead ends: 1849 [2024-11-16 04:17:10,862 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 04:17:10,867 INFO L432 NwaCegarLoop]: 856 mSDtfsCounter, 461 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:10,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 926 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-16 04:17:10,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2024-11-16 04:17:10,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1847. [2024-11-16 04:17:10,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1847 states, 1846 states have (on average 1.3591549295774648) internal successors, (2509), 1846 states have internal predecessors, (2509), 0 states have call successors, (0), 0 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 04:17:10,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1847 states to 1847 states and 2509 transitions. [2024-11-16 04:17:10,934 INFO L78 Accepts]: Start accepts. Automaton has 1847 states and 2509 transitions. Word has length 103 [2024-11-16 04:17:10,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:10,934 INFO L471 AbstractCegarLoop]: Abstraction has 1847 states and 2509 transitions. [2024-11-16 04:17:10,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 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 04:17:10,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1847 states and 2509 transitions. [2024-11-16 04:17:10,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-16 04:17:10,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:10,937 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:17:10,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 04:17:10,938 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:10,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:10,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1939064772, now seen corresponding path program 1 times [2024-11-16 04:17:10,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:10,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110830959] [2024-11-16 04:17:10,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:10,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:11,168 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:17:11,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:11,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110830959] [2024-11-16 04:17:11,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110830959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:11,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:17:11,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:17:11,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934555445] [2024-11-16 04:17:11,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:11,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:17:11,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:11,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:17:11,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:17:11,171 INFO L87 Difference]: Start difference. First operand 1847 states and 2509 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 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 04:17:13,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:13,098 INFO L93 Difference]: Finished difference Result 5409 states and 7340 transitions. [2024-11-16 04:17:13,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:17:13,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2024-11-16 04:17:13,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:13,110 INFO L225 Difference]: With dead ends: 5409 [2024-11-16 04:17:13,110 INFO L226 Difference]: Without dead ends: 2708 [2024-11-16 04:17:13,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:17:13,116 INFO L432 NwaCegarLoop]: 517 mSDtfsCounter, 369 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:13,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 593 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-16 04:17:13,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2708 states. [2024-11-16 04:17:13,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2708 to 2708. [2024-11-16 04:17:13,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2708 states, 2707 states have (on average 1.1913557443664573) internal successors, (3225), 2707 states have internal predecessors, (3225), 0 states have call successors, (0), 0 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 04:17:13,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2708 states to 2708 states and 3225 transitions. [2024-11-16 04:17:13,161 INFO L78 Accepts]: Start accepts. Automaton has 2708 states and 3225 transitions. Word has length 125 [2024-11-16 04:17:13,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:13,162 INFO L471 AbstractCegarLoop]: Abstraction has 2708 states and 3225 transitions. [2024-11-16 04:17:13,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 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 04:17:13,166 INFO L276 IsEmpty]: Start isEmpty. Operand 2708 states and 3225 transitions. [2024-11-16 04:17:13,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-11-16 04:17:13,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:13,169 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:17:13,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 04:17:13,170 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:13,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:13,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1346109763, now seen corresponding path program 1 times [2024-11-16 04:17:13,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:13,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845431979] [2024-11-16 04:17:13,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:13,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:13,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:13,377 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:17:13,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:13,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845431979] [2024-11-16 04:17:13,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845431979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:13,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:17:13,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:17:13,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633950338] [2024-11-16 04:17:13,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:13,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:17:13,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:13,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:17:13,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:17:13,379 INFO L87 Difference]: Start difference. First operand 2708 states and 3225 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 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 04:17:14,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:14,763 INFO L93 Difference]: Finished difference Result 7126 states and 8616 transitions. [2024-11-16 04:17:14,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:17:14,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 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 186 [2024-11-16 04:17:14,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:14,774 INFO L225 Difference]: With dead ends: 7126 [2024-11-16 04:17:14,774 INFO L226 Difference]: Without dead ends: 4420 [2024-11-16 04:17:14,777 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 04:17:14,777 INFO L432 NwaCegarLoop]: 729 mSDtfsCounter, 496 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:14,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 789 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-16 04:17:14,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4420 states. [2024-11-16 04:17:14,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4420 to 4420. [2024-11-16 04:17:14,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4420 states, 4419 states have (on average 1.170174247567323) internal successors, (5171), 4419 states have internal predecessors, (5171), 0 states have call successors, (0), 0 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 04:17:14,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4420 states to 4420 states and 5171 transitions. [2024-11-16 04:17:14,832 INFO L78 Accepts]: Start accepts. Automaton has 4420 states and 5171 transitions. Word has length 186 [2024-11-16 04:17:14,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:14,833 INFO L471 AbstractCegarLoop]: Abstraction has 4420 states and 5171 transitions. [2024-11-16 04:17:14,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 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 04:17:14,834 INFO L276 IsEmpty]: Start isEmpty. Operand 4420 states and 5171 transitions. [2024-11-16 04:17:14,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-16 04:17:14,837 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:14,837 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:17:14,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 04:17:14,837 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:14,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:14,838 INFO L85 PathProgramCache]: Analyzing trace with hash -579841570, now seen corresponding path program 1 times [2024-11-16 04:17:14,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:14,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042285360] [2024-11-16 04:17:14,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:14,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:14,976 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-16 04:17:14,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:14,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042285360] [2024-11-16 04:17:14,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042285360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:14,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:17:14,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:17:14,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477691018] [2024-11-16 04:17:14,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:14,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:17:14,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:14,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:17:14,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:17:14,980 INFO L87 Difference]: Start difference. First operand 4420 states and 5171 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 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 04:17:16,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:16,395 INFO L93 Difference]: Finished difference Result 10963 states and 12997 transitions. [2024-11-16 04:17:16,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:17:16,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 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) Word has length 188 [2024-11-16 04:17:16,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:16,427 INFO L225 Difference]: With dead ends: 10963 [2024-11-16 04:17:16,427 INFO L226 Difference]: Without dead ends: 6544 [2024-11-16 04:17:16,440 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 04:17:16,443 INFO L432 NwaCegarLoop]: 385 mSDtfsCounter, 421 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:16,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 449 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-16 04:17:16,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6544 states. [2024-11-16 04:17:16,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6544 to 4393. [2024-11-16 04:17:16,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4393 states, 4392 states have (on average 1.1680327868852458) internal successors, (5130), 4392 states have internal predecessors, (5130), 0 states have call successors, (0), 0 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 04:17:16,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4393 states to 4393 states and 5130 transitions. [2024-11-16 04:17:16,513 INFO L78 Accepts]: Start accepts. Automaton has 4393 states and 5130 transitions. Word has length 188 [2024-11-16 04:17:16,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:16,515 INFO L471 AbstractCegarLoop]: Abstraction has 4393 states and 5130 transitions. [2024-11-16 04:17:16,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 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 04:17:16,515 INFO L276 IsEmpty]: Start isEmpty. Operand 4393 states and 5130 transitions. [2024-11-16 04:17:16,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-16 04:17:16,518 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:16,518 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:17:16,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 04:17:16,518 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:16,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:16,519 INFO L85 PathProgramCache]: Analyzing trace with hash 699396454, now seen corresponding path program 1 times [2024-11-16 04:17:16,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:16,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853874731] [2024-11-16 04:17:16,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:16,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:16,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:16,718 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-16 04:17:16,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:16,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853874731] [2024-11-16 04:17:16,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853874731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:16,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:17:16,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:17:16,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107969165] [2024-11-16 04:17:16,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:16,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:17:16,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:16,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:17:16,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:17:16,721 INFO L87 Difference]: Start difference. First operand 4393 states and 5130 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 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 04:17:18,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:18,112 INFO L93 Difference]: Finished difference Result 10070 states and 11731 transitions. [2024-11-16 04:17:18,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:17:18,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 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 254 [2024-11-16 04:17:18,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:18,122 INFO L225 Difference]: With dead ends: 10070 [2024-11-16 04:17:18,122 INFO L226 Difference]: Without dead ends: 5679 [2024-11-16 04:17:18,125 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 04:17:18,125 INFO L432 NwaCegarLoop]: 836 mSDtfsCounter, 406 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:18,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 899 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 04:17:18,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5679 states. [2024-11-16 04:17:18,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5679 to 5247. [2024-11-16 04:17:18,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5247 states, 5246 states have (on average 1.1584064048799085) internal successors, (6077), 5246 states have internal predecessors, (6077), 0 states have call successors, (0), 0 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 04:17:18,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5247 states to 5247 states and 6077 transitions. [2024-11-16 04:17:18,165 INFO L78 Accepts]: Start accepts. Automaton has 5247 states and 6077 transitions. Word has length 254 [2024-11-16 04:17:18,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:18,165 INFO L471 AbstractCegarLoop]: Abstraction has 5247 states and 6077 transitions. [2024-11-16 04:17:18,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 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 04:17:18,166 INFO L276 IsEmpty]: Start isEmpty. Operand 5247 states and 6077 transitions. [2024-11-16 04:17:18,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-11-16 04:17:18,168 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:18,168 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:17:18,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 04:17:18,168 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:18,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:18,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1388410776, now seen corresponding path program 1 times [2024-11-16 04:17:18,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:18,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207675265] [2024-11-16 04:17:18,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:18,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:18,402 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 221 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-16 04:17:18,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:18,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207675265] [2024-11-16 04:17:18,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207675265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:18,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:17:18,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:17:18,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025894191] [2024-11-16 04:17:18,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:18,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:17:18,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:18,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:17:18,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:17:18,404 INFO L87 Difference]: Start difference. First operand 5247 states and 6077 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 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 04:17:19,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:19,945 INFO L93 Difference]: Finished difference Result 13081 states and 15254 transitions. [2024-11-16 04:17:19,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:17:19,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 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 267 [2024-11-16 04:17:19,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:19,958 INFO L225 Difference]: With dead ends: 13081 [2024-11-16 04:17:19,958 INFO L226 Difference]: Without dead ends: 6959 [2024-11-16 04:17:19,962 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 04:17:19,963 INFO L432 NwaCegarLoop]: 589 mSDtfsCounter, 493 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:19,963 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 635 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-16 04:17:19,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6959 states. [2024-11-16 04:17:20,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6959 to 6528. [2024-11-16 04:17:20,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6528 states, 6527 states have (on average 1.15167764669833) internal successors, (7517), 6527 states have internal predecessors, (7517), 0 states have call successors, (0), 0 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 04:17:20,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6528 states to 6528 states and 7517 transitions. [2024-11-16 04:17:20,016 INFO L78 Accepts]: Start accepts. Automaton has 6528 states and 7517 transitions. Word has length 267 [2024-11-16 04:17:20,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:20,017 INFO L471 AbstractCegarLoop]: Abstraction has 6528 states and 7517 transitions. [2024-11-16 04:17:20,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 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 04:17:20,017 INFO L276 IsEmpty]: Start isEmpty. Operand 6528 states and 7517 transitions. [2024-11-16 04:17:20,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-11-16 04:17:20,019 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:20,020 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:17:20,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 04:17:20,020 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:20,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:20,020 INFO L85 PathProgramCache]: Analyzing trace with hash -330699375, now seen corresponding path program 1 times [2024-11-16 04:17:20,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:20,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954416878] [2024-11-16 04:17:20,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:20,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:20,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:20,273 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 221 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-16 04:17:20,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:20,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954416878] [2024-11-16 04:17:20,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954416878] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:20,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:17:20,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:17:20,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954934316] [2024-11-16 04:17:20,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:20,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:17:20,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:20,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:17:20,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:17:20,275 INFO L87 Difference]: Start difference. First operand 6528 states and 7517 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 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 04:17:21,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:21,693 INFO L93 Difference]: Finished difference Result 16049 states and 18516 transitions. [2024-11-16 04:17:21,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:17:21,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 290 [2024-11-16 04:17:21,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:21,713 INFO L225 Difference]: With dead ends: 16049 [2024-11-16 04:17:21,713 INFO L226 Difference]: Without dead ends: 9523 [2024-11-16 04:17:21,717 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 04:17:21,718 INFO L432 NwaCegarLoop]: 295 mSDtfsCounter, 416 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:21,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 341 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 1221 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 04:17:21,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9523 states. [2024-11-16 04:17:21,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9523 to 8665. [2024-11-16 04:17:21,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8665 states, 8664 states have (on average 1.154201292705448) internal successors, (10000), 8664 states have internal predecessors, (10000), 0 states have call successors, (0), 0 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 04:17:21,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8665 states to 8665 states and 10000 transitions. [2024-11-16 04:17:21,791 INFO L78 Accepts]: Start accepts. Automaton has 8665 states and 10000 transitions. Word has length 290 [2024-11-16 04:17:21,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:21,791 INFO L471 AbstractCegarLoop]: Abstraction has 8665 states and 10000 transitions. [2024-11-16 04:17:21,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 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 04:17:21,792 INFO L276 IsEmpty]: Start isEmpty. Operand 8665 states and 10000 transitions. [2024-11-16 04:17:21,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-11-16 04:17:21,795 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:21,795 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 04:17:21,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 04:17:21,795 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:21,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:21,796 INFO L85 PathProgramCache]: Analyzing trace with hash -170830756, now seen corresponding path program 1 times [2024-11-16 04:17:21,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:21,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935705904] [2024-11-16 04:17:21,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:21,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:22,057 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-16 04:17:22,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:22,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935705904] [2024-11-16 04:17:22,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935705904] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:22,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:17:22,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 04:17:22,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962277691] [2024-11-16 04:17:22,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:22,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:17:22,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:22,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:17:22,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:17:22,060 INFO L87 Difference]: Start difference. First operand 8665 states and 10000 transitions. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 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 04:17:24,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:24,517 INFO L93 Difference]: Finished difference Result 30635 states and 35581 transitions. [2024-11-16 04:17:24,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:17:24,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 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 295 [2024-11-16 04:17:24,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:24,542 INFO L225 Difference]: With dead ends: 30635 [2024-11-16 04:17:24,542 INFO L226 Difference]: Without dead ends: 21115 [2024-11-16 04:17:24,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:17:24,552 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 894 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 2494 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 2950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 2494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:24,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 249 Invalid, 2950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 2494 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-16 04:17:24,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21115 states. [2024-11-16 04:17:24,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21115 to 21072. [2024-11-16 04:17:24,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21072 states, 21071 states have (on average 1.141948649803047) internal successors, (24062), 21071 states have internal predecessors, (24062), 0 states have call successors, (0), 0 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 04:17:24,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21072 states to 21072 states and 24062 transitions. [2024-11-16 04:17:24,876 INFO L78 Accepts]: Start accepts. Automaton has 21072 states and 24062 transitions. Word has length 295 [2024-11-16 04:17:24,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:24,877 INFO L471 AbstractCegarLoop]: Abstraction has 21072 states and 24062 transitions. [2024-11-16 04:17:24,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 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 04:17:24,877 INFO L276 IsEmpty]: Start isEmpty. Operand 21072 states and 24062 transitions. [2024-11-16 04:17:24,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2024-11-16 04:17:24,883 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:24,883 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:17:24,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 04:17:24,884 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:24,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:24,885 INFO L85 PathProgramCache]: Analyzing trace with hash 373483942, now seen corresponding path program 1 times [2024-11-16 04:17:24,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:24,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146794846] [2024-11-16 04:17:24,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:24,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:24,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:25,558 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 252 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:17:25,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:25,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146794846] [2024-11-16 04:17:25,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146794846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:17:25,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842813442] [2024-11-16 04:17:25,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:25,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:17:25,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:17:25,562 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 04:17:25,563 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 04:17:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:25,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-16 04:17:25,693 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:17:26,127 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 246 proven. 83 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-16 04:17:26,128 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 04:17:26,880 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 246 proven. 83 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-16 04:17:26,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842813442] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 04:17:26,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 04:17:26,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-11-16 04:17:26,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195005986] [2024-11-16 04:17:26,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 04:17:26,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 04:17:26,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:26,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 04:17:26,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-16 04:17:26,883 INFO L87 Difference]: Start difference. First operand 21072 states and 24062 transitions. Second operand has 9 states, 9 states have (on average 91.22222222222223) internal successors, (821), 9 states have internal predecessors, (821), 0 states have call successors, (0), 0 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 04:17:38,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:38,523 INFO L93 Difference]: Finished difference Result 92631 states and 105855 transitions. [2024-11-16 04:17:38,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-16 04:17:38,523 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 91.22222222222223) internal successors, (821), 9 states have internal predecessors, (821), 0 states have call successors, (0), 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 330 [2024-11-16 04:17:38,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:38,600 INFO L225 Difference]: With dead ends: 92631 [2024-11-16 04:17:38,600 INFO L226 Difference]: Without dead ends: 68146 [2024-11-16 04:17:38,616 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 668 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2024-11-16 04:17:38,616 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 8167 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 12231 mSolverCounterSat, 2624 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8167 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 14855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2624 IncrementalHoareTripleChecker+Valid, 12231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:38,617 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8167 Valid, 483 Invalid, 14855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2624 Valid, 12231 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2024-11-16 04:17:38,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68146 states. [2024-11-16 04:17:38,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68146 to 53512. [2024-11-16 04:17:39,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53512 states, 53511 states have (on average 1.1435966436807385) internal successors, (61195), 53511 states have internal predecessors, (61195), 0 states have call successors, (0), 0 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 04:17:39,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53512 states to 53512 states and 61195 transitions. [2024-11-16 04:17:39,081 INFO L78 Accepts]: Start accepts. Automaton has 53512 states and 61195 transitions. Word has length 330 [2024-11-16 04:17:39,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:39,081 INFO L471 AbstractCegarLoop]: Abstraction has 53512 states and 61195 transitions. [2024-11-16 04:17:39,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 91.22222222222223) internal successors, (821), 9 states have internal predecessors, (821), 0 states have call successors, (0), 0 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 04:17:39,082 INFO L276 IsEmpty]: Start isEmpty. Operand 53512 states and 61195 transitions. [2024-11-16 04:17:39,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2024-11-16 04:17:39,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:39,089 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:17:39,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 04:17:39,293 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,SelfDestructingSolverStorable9 [2024-11-16 04:17:39,293 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:39,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:39,294 INFO L85 PathProgramCache]: Analyzing trace with hash 122576941, now seen corresponding path program 1 times [2024-11-16 04:17:39,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:39,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365954783] [2024-11-16 04:17:39,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:39,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:39,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:39,466 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 455 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-16 04:17:39,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:39,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365954783] [2024-11-16 04:17:39,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365954783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:39,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:17:39,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:17:39,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301268236] [2024-11-16 04:17:39,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:39,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:17:39,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:39,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:17:39,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:17:39,468 INFO L87 Difference]: Start difference. First operand 53512 states and 61195 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 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 04:17:41,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:41,171 INFO L93 Difference]: Finished difference Result 119372 states and 136750 transitions. [2024-11-16 04:17:41,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:17:41,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 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 399 [2024-11-16 04:17:41,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:41,236 INFO L225 Difference]: With dead ends: 119372 [2024-11-16 04:17:41,236 INFO L226 Difference]: Without dead ends: 65862 [2024-11-16 04:17:41,264 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 04:17:41,265 INFO L432 NwaCegarLoop]: 727 mSDtfsCounter, 320 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:41,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 791 Invalid, 1362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-16 04:17:41,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65862 states. [2024-11-16 04:17:41,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65862 to 63732. [2024-11-16 04:17:42,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63732 states, 63731 states have (on average 1.114214432536756) internal successors, (71010), 63731 states have internal predecessors, (71010), 0 states have call successors, (0), 0 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 04:17:42,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63732 states to 63732 states and 71010 transitions. [2024-11-16 04:17:42,337 INFO L78 Accepts]: Start accepts. Automaton has 63732 states and 71010 transitions. Word has length 399 [2024-11-16 04:17:42,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:42,337 INFO L471 AbstractCegarLoop]: Abstraction has 63732 states and 71010 transitions. [2024-11-16 04:17:42,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 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 04:17:42,338 INFO L276 IsEmpty]: Start isEmpty. Operand 63732 states and 71010 transitions. [2024-11-16 04:17:42,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2024-11-16 04:17:42,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:42,347 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:17:42,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 04:17:42,347 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:42,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:42,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1763352726, now seen corresponding path program 1 times [2024-11-16 04:17:42,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:42,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591114976] [2024-11-16 04:17:42,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:42,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:43,042 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 526 proven. 80 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-16 04:17:43,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:43,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591114976] [2024-11-16 04:17:43,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591114976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:17:43,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560912862] [2024-11-16 04:17:43,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:43,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:17:43,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:17:43,047 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 04:17:43,050 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 04:17:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:43,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 04:17:43,221 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:17:43,517 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 606 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-16 04:17:43,518 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 04:17:43,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560912862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:43,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 04:17:43,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-16 04:17:43,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360889752] [2024-11-16 04:17:43,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:43,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:17:43,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:43,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:17:43,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-16 04:17:43,520 INFO L87 Difference]: Start difference. First operand 63732 states and 71010 transitions. Second operand has 4 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 0 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 04:17:45,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:45,505 INFO L93 Difference]: Finished difference Result 127462 states and 142018 transitions. [2024-11-16 04:17:45,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:17:45,506 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 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 413 [2024-11-16 04:17:45,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:45,570 INFO L225 Difference]: With dead ends: 127462 [2024-11-16 04:17:45,571 INFO L226 Difference]: Without dead ends: 63732 [2024-11-16 04:17:45,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-16 04:17:45,612 INFO L432 NwaCegarLoop]: 239 mSDtfsCounter, 840 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2068 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 2364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 2068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:45,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 319 Invalid, 2364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 2068 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-16 04:17:45,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63732 states. [2024-11-16 04:17:46,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63732 to 63306. [2024-11-16 04:17:46,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63306 states, 63305 states have (on average 1.1138930574204249) internal successors, (70515), 63305 states have internal predecessors, (70515), 0 states have call successors, (0), 0 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 04:17:46,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63306 states to 63306 states and 70515 transitions. [2024-11-16 04:17:46,531 INFO L78 Accepts]: Start accepts. Automaton has 63306 states and 70515 transitions. Word has length 413 [2024-11-16 04:17:46,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:46,531 INFO L471 AbstractCegarLoop]: Abstraction has 63306 states and 70515 transitions. [2024-11-16 04:17:46,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 0 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 04:17:46,532 INFO L276 IsEmpty]: Start isEmpty. Operand 63306 states and 70515 transitions. [2024-11-16 04:17:46,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2024-11-16 04:17:46,538 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:46,538 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:17:46,551 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 04:17:46,742 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,SelfDestructingSolverStorable11 [2024-11-16 04:17:46,743 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:46,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:46,744 INFO L85 PathProgramCache]: Analyzing trace with hash -651032341, now seen corresponding path program 1 times [2024-11-16 04:17:46,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:46,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167058565] [2024-11-16 04:17:46,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:46,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:47,568 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 355 proven. 183 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-16 04:17:47,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:47,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167058565] [2024-11-16 04:17:47,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167058565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:17:47,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476338219] [2024-11-16 04:17:47,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:47,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:17:47,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:17:47,570 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 04:17:47,572 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 04:17:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:47,732 INFO L255 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 04:17:47,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:17:48,154 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 539 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-16 04:17:48,155 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 04:17:48,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476338219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:48,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 04:17:48,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-16 04:17:48,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661724948] [2024-11-16 04:17:48,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:48,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:17:48,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:48,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:17:48,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-16 04:17:48,161 INFO L87 Difference]: Start difference. First operand 63306 states and 70515 transitions. Second operand has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 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 04:17:50,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:50,869 INFO L93 Difference]: Finished difference Result 164168 states and 183107 transitions. [2024-11-16 04:17:50,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:17:50,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 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 461 [2024-11-16 04:17:50,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:51,028 INFO L225 Difference]: With dead ends: 164168 [2024-11-16 04:17:51,029 INFO L226 Difference]: Without dead ends: 100864 [2024-11-16 04:17:51,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 460 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-16 04:17:51,099 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 760 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 2400 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 2872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 2400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:51,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 198 Invalid, 2872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [472 Valid, 2400 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-16 04:17:51,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100864 states. [2024-11-16 04:17:52,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100864 to 98726. [2024-11-16 04:17:52,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98726 states, 98725 states have (on average 1.1109445429222589) internal successors, (109678), 98725 states have internal predecessors, (109678), 0 states have call successors, (0), 0 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 04:17:52,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98726 states to 98726 states and 109678 transitions. [2024-11-16 04:17:52,411 INFO L78 Accepts]: Start accepts. Automaton has 98726 states and 109678 transitions. Word has length 461 [2024-11-16 04:17:52,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:52,413 INFO L471 AbstractCegarLoop]: Abstraction has 98726 states and 109678 transitions. [2024-11-16 04:17:52,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 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 04:17:52,413 INFO L276 IsEmpty]: Start isEmpty. Operand 98726 states and 109678 transitions. [2024-11-16 04:17:52,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2024-11-16 04:17:52,433 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:52,433 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:17:52,467 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 04:17:52,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:17:52,634 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:52,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:52,638 INFO L85 PathProgramCache]: Analyzing trace with hash -2025261065, now seen corresponding path program 1 times [2024-11-16 04:17:52,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:52,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386367873] [2024-11-16 04:17:52,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:52,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:52,964 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-16 04:17:52,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:52,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386367873] [2024-11-16 04:17:52,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386367873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:52,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:17:52,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:17:52,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203515961] [2024-11-16 04:17:52,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:52,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:17:52,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:52,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:17:52,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:17:52,966 INFO L87 Difference]: Start difference. First operand 98726 states and 109678 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 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 04:17:55,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:55,128 INFO L93 Difference]: Finished difference Result 202986 states and 225041 transitions. [2024-11-16 04:17:55,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:17:55,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 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 492 [2024-11-16 04:17:55,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:55,241 INFO L225 Difference]: With dead ends: 202986 [2024-11-16 04:17:55,241 INFO L226 Difference]: Without dead ends: 100410 [2024-11-16 04:17:55,475 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 04:17:55,478 INFO L432 NwaCegarLoop]: 616 mSDtfsCounter, 490 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:55,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 647 Invalid, 1447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-16 04:17:55,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100410 states. [2024-11-16 04:17:56,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100410 to 90575. [2024-11-16 04:17:56,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90575 states, 90574 states have (on average 1.102689513546934) internal successors, (99875), 90574 states have internal predecessors, (99875), 0 states have call successors, (0), 0 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 04:17:56,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90575 states to 90575 states and 99875 transitions. [2024-11-16 04:17:56,437 INFO L78 Accepts]: Start accepts. Automaton has 90575 states and 99875 transitions. Word has length 492 [2024-11-16 04:17:56,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:56,437 INFO L471 AbstractCegarLoop]: Abstraction has 90575 states and 99875 transitions. [2024-11-16 04:17:56,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 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 04:17:56,437 INFO L276 IsEmpty]: Start isEmpty. Operand 90575 states and 99875 transitions. [2024-11-16 04:17:56,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2024-11-16 04:17:56,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:56,446 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:17:56,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 04:17:56,447 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:56,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:56,447 INFO L85 PathProgramCache]: Analyzing trace with hash -247195086, now seen corresponding path program 1 times [2024-11-16 04:17:56,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:56,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567779313] [2024-11-16 04:17:56,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:56,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:57,606 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 433 proven. 175 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 04:17:57,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:57,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567779313] [2024-11-16 04:17:57,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567779313] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:17:57,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665812068] [2024-11-16 04:17:57,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:57,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:17:57,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:17:57,613 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 04:17:57,616 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 04:17:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:57,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 04:17:57,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:17:58,225 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 582 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-16 04:17:58,225 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 04:17:58,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665812068] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:58,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 04:17:58,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-16 04:17:58,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88117662] [2024-11-16 04:17:58,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:58,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:17:58,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:58,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:17:58,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-16 04:17:58,227 INFO L87 Difference]: Start difference. First operand 90575 states and 99875 transitions. Second operand has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:18:00,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:18:00,345 INFO L93 Difference]: Finished difference Result 184567 states and 203386 transitions. [2024-11-16 04:18:00,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:18:00,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 494 [2024-11-16 04:18:00,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:18:00,448 INFO L225 Difference]: With dead ends: 184567 [2024-11-16 04:18:00,449 INFO L226 Difference]: Without dead ends: 93994 [2024-11-16 04:18:00,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-16 04:18:00,499 INFO L432 NwaCegarLoop]: 226 mSDtfsCounter, 872 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 2034 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 2324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 2034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-16 04:18:00,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 298 Invalid, 2324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 2034 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-16 04:18:00,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93994 states. [2024-11-16 04:18:01,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93994 to 93141. [2024-11-16 04:18:01,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93141 states, 93140 states have (on average 1.1010414429890487) internal successors, (102551), 93140 states have internal predecessors, (102551), 0 states have call successors, (0), 0 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 04:18:01,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93141 states to 93141 states and 102551 transitions. [2024-11-16 04:18:01,808 INFO L78 Accepts]: Start accepts. Automaton has 93141 states and 102551 transitions. Word has length 494 [2024-11-16 04:18:01,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:18:01,809 INFO L471 AbstractCegarLoop]: Abstraction has 93141 states and 102551 transitions. [2024-11-16 04:18:01,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:18:01,809 INFO L276 IsEmpty]: Start isEmpty. Operand 93141 states and 102551 transitions. [2024-11-16 04:18:01,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2024-11-16 04:18:01,820 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:18:01,820 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:18:01,833 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 04:18:02,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-16 04:18:02,021 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:18:02,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:18:02,021 INFO L85 PathProgramCache]: Analyzing trace with hash -64673552, now seen corresponding path program 1 times [2024-11-16 04:18:02,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:18:02,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708042295] [2024-11-16 04:18:02,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:18:02,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:18:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:18:02,207 INFO L134 CoverageAnalysis]: Checked inductivity of 932 backedges. 574 proven. 0 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2024-11-16 04:18:02,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:18:02,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708042295] [2024-11-16 04:18:02,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708042295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:18:02,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:18:02,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:18:02,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825804565] [2024-11-16 04:18:02,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:18:02,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:18:02,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:18:02,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:18:02,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:18:02,208 INFO L87 Difference]: Start difference. First operand 93141 states and 102551 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 2 states have internal predecessors, (269), 0 states have call successors, (0), 0 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 04:18:03,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:18:03,351 INFO L93 Difference]: Finished difference Result 180293 states and 198257 transitions. [2024-11-16 04:18:03,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:18:03,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 2 states have internal predecessors, (269), 0 states have call successors, (0), 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 520 [2024-11-16 04:18:03,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:18:03,437 INFO L225 Difference]: With dead ends: 180293 [2024-11-16 04:18:03,437 INFO L226 Difference]: Without dead ends: 87150 [2024-11-16 04:18:03,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:18:03,476 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 611 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 04:18:03,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 96 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 04:18:03,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87150 states. [2024-11-16 04:18:04,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87150 to 86282. [2024-11-16 04:18:04,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86282 states, 86281 states have (on average 1.0970086113976425) internal successors, (94651), 86281 states have internal predecessors, (94651), 0 states have call successors, (0), 0 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 04:18:04,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86282 states to 86282 states and 94651 transitions. [2024-11-16 04:18:04,673 INFO L78 Accepts]: Start accepts. Automaton has 86282 states and 94651 transitions. Word has length 520 [2024-11-16 04:18:04,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:18:04,674 INFO L471 AbstractCegarLoop]: Abstraction has 86282 states and 94651 transitions. [2024-11-16 04:18:04,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 2 states have internal predecessors, (269), 0 states have call successors, (0), 0 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 04:18:04,674 INFO L276 IsEmpty]: Start isEmpty. Operand 86282 states and 94651 transitions. [2024-11-16 04:18:04,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2024-11-16 04:18:04,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:18:04,688 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:18:04,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 04:18:04,688 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:18:04,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:18:04,688 INFO L85 PathProgramCache]: Analyzing trace with hash 240181383, now seen corresponding path program 1 times [2024-11-16 04:18:04,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:18:04,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473810096] [2024-11-16 04:18:04,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:18:04,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:18:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:18:05,484 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 175 proven. 166 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:18:05,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:18:05,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473810096] [2024-11-16 04:18:05,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473810096] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:18:05,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50958789] [2024-11-16 04:18:05,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:18:05,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:18:05,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:18:05,487 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 04:18:05,488 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 04:18:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:18:05,627 INFO L255 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-16 04:18:05,631 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:18:06,049 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 175 proven. 166 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:18:06,049 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 04:18:06,635 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 341 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:18:06,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50958789] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 04:18:06,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 04:18:06,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2024-11-16 04:18:06,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750028410] [2024-11-16 04:18:06,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:18:06,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 04:18:06,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:18:06,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 04:18:06,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-16 04:18:06,637 INFO L87 Difference]: Start difference. First operand 86282 states and 94651 transitions. Second operand has 5 states, 5 states have (on average 104.4) internal successors, (522), 4 states have internal predecessors, (522), 0 states have call successors, (0), 0 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 04:18:09,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:18:09,867 INFO L93 Difference]: Finished difference Result 191782 states and 210524 transitions. [2024-11-16 04:18:09,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 04:18:09,867 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 104.4) internal successors, (522), 4 states have internal predecessors, (522), 0 states have call successors, (0), 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 522 [2024-11-16 04:18:09,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:18:09,986 INFO L225 Difference]: With dead ends: 191782 [2024-11-16 04:18:09,986 INFO L226 Difference]: Without dead ends: 105076 [2024-11-16 04:18:10,003 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1046 GetRequests, 1040 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-16 04:18:10,004 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 1282 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 2559 mSolverCounterSat, 1017 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1282 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 3576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1017 IncrementalHoareTripleChecker+Valid, 2559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-16 04:18:10,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1282 Valid, 134 Invalid, 3576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1017 Valid, 2559 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-16 04:18:10,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105076 states. [2024-11-16 04:18:11,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105076 to 99526. [2024-11-16 04:18:11,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99526 states, 99525 states have (on average 1.0788344637025873) internal successors, (107371), 99525 states have internal predecessors, (107371), 0 states have call successors, (0), 0 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 04:18:11,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99526 states to 99526 states and 107371 transitions. [2024-11-16 04:18:11,364 INFO L78 Accepts]: Start accepts. Automaton has 99526 states and 107371 transitions. Word has length 522 [2024-11-16 04:18:11,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:18:11,365 INFO L471 AbstractCegarLoop]: Abstraction has 99526 states and 107371 transitions. [2024-11-16 04:18:11,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.4) internal successors, (522), 4 states have internal predecessors, (522), 0 states have call successors, (0), 0 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 04:18:11,366 INFO L276 IsEmpty]: Start isEmpty. Operand 99526 states and 107371 transitions. [2024-11-16 04:18:11,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2024-11-16 04:18:11,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:18:11,379 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:18:11,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 04:18:11,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-16 04:18:11,583 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:18:11,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:18:11,584 INFO L85 PathProgramCache]: Analyzing trace with hash 355540030, now seen corresponding path program 1 times [2024-11-16 04:18:11,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:18:11,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606453320] [2024-11-16 04:18:11,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:18:11,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:18:11,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:18:11,830 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 363 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2024-11-16 04:18:11,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:18:11,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606453320] [2024-11-16 04:18:11,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606453320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:18:11,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:18:11,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:18:11,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471423531] [2024-11-16 04:18:11,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:18:11,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:18:11,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:18:11,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:18:11,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:18:11,833 INFO L87 Difference]: Start difference. First operand 99526 states and 107371 transitions. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 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 04:18:13,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:18:13,778 INFO L93 Difference]: Finished difference Result 193464 states and 208612 transitions. [2024-11-16 04:18:13,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:18:13,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 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 550 [2024-11-16 04:18:13,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:18:13,884 INFO L225 Difference]: With dead ends: 193464 [2024-11-16 04:18:13,884 INFO L226 Difference]: Without dead ends: 93940 [2024-11-16 04:18:13,944 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 04:18:13,945 INFO L432 NwaCegarLoop]: 597 mSDtfsCounter, 485 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-16 04:18:13,945 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 631 Invalid, 1267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-16 04:18:14,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93940 states. [2024-11-16 04:18:14,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93940 to 93509. [2024-11-16 04:18:15,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93509 states, 93508 states have (on average 1.0718334260170252) internal successors, (100225), 93508 states have internal predecessors, (100225), 0 states have call successors, (0), 0 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 04:18:15,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93509 states to 93509 states and 100225 transitions. [2024-11-16 04:18:15,094 INFO L78 Accepts]: Start accepts. Automaton has 93509 states and 100225 transitions. Word has length 550 [2024-11-16 04:18:15,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:18:15,094 INFO L471 AbstractCegarLoop]: Abstraction has 93509 states and 100225 transitions. [2024-11-16 04:18:15,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 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 04:18:15,094 INFO L276 IsEmpty]: Start isEmpty. Operand 93509 states and 100225 transitions. [2024-11-16 04:18:15,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2024-11-16 04:18:15,106 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:18:15,107 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:18:15,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-16 04:18:15,107 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:18:15,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:18:15,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1571382421, now seen corresponding path program 1 times [2024-11-16 04:18:15,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:18:15,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232328157] [2024-11-16 04:18:15,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:18:15,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:18:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:18:15,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1044 backedges. 798 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2024-11-16 04:18:15,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:18:15,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232328157] [2024-11-16 04:18:15,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232328157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:18:15,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:18:15,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:18:15,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818846904] [2024-11-16 04:18:15,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:18:15,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:18:15,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:18:15,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:18:15,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:18:15,694 INFO L87 Difference]: Start difference. First operand 93509 states and 100225 transitions. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 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 04:18:17,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:18:17,511 INFO L93 Difference]: Finished difference Result 202361 states and 217613 transitions. [2024-11-16 04:18:17,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:18:17,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 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 584 [2024-11-16 04:18:17,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:18:17,634 INFO L225 Difference]: With dead ends: 202361 [2024-11-16 04:18:17,634 INFO L226 Difference]: Without dead ends: 108854 [2024-11-16 04:18:17,683 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 04:18:17,684 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 292 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-16 04:18:17,685 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 269 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-16 04:18:17,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108854 states. [2024-11-16 04:18:18,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108854 to 105008. [2024-11-16 04:18:18,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105008 states, 105007 states have (on average 1.0636243298065844) internal successors, (111688), 105007 states have internal predecessors, (111688), 0 states have call successors, (0), 0 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 04:18:19,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105008 states to 105008 states and 111688 transitions. [2024-11-16 04:18:19,004 INFO L78 Accepts]: Start accepts. Automaton has 105008 states and 111688 transitions. Word has length 584 [2024-11-16 04:18:19,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:18:19,005 INFO L471 AbstractCegarLoop]: Abstraction has 105008 states and 111688 transitions. [2024-11-16 04:18:19,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 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 04:18:19,005 INFO L276 IsEmpty]: Start isEmpty. Operand 105008 states and 111688 transitions. [2024-11-16 04:18:19,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2024-11-16 04:18:19,013 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:18:19,013 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:18:19,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-16 04:18:19,013 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:18:19,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:18:19,016 INFO L85 PathProgramCache]: Analyzing trace with hash -561359236, now seen corresponding path program 1 times [2024-11-16 04:18:19,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:18:19,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352146955] [2024-11-16 04:18:19,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:18:19,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:18:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:18:19,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 795 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2024-11-16 04:18:19,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:18:19,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352146955] [2024-11-16 04:18:19,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352146955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:18:19,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:18:19,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:18:19,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548432589] [2024-11-16 04:18:19,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:18:19,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:18:19,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:18:19,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:18:19,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:18:19,604 INFO L87 Difference]: Start difference. First operand 105008 states and 111688 transitions. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 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 04:18:21,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:18:21,168 INFO L93 Difference]: Finished difference Result 220255 states and 234238 transitions. [2024-11-16 04:18:21,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:18:21,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 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 591 [2024-11-16 04:18:21,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:18:21,298 INFO L225 Difference]: With dead ends: 220255 [2024-11-16 04:18:21,298 INFO L226 Difference]: Without dead ends: 114823 [2024-11-16 04:18:21,362 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 04:18:21,362 INFO L432 NwaCegarLoop]: 630 mSDtfsCounter, 320 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1185 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 04:18:21,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 667 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1185 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 04:18:21,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114823 states. [2024-11-16 04:18:22,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114823 to 107560. [2024-11-16 04:18:22,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107560 states, 107559 states have (on average 1.05929768778066) internal successors, (113937), 107559 states have internal predecessors, (113937), 0 states have call successors, (0), 0 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 04:18:23,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107560 states to 107560 states and 113937 transitions. [2024-11-16 04:18:23,097 INFO L78 Accepts]: Start accepts. Automaton has 107560 states and 113937 transitions. Word has length 591 [2024-11-16 04:18:23,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:18:23,098 INFO L471 AbstractCegarLoop]: Abstraction has 107560 states and 113937 transitions. [2024-11-16 04:18:23,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 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 04:18:23,098 INFO L276 IsEmpty]: Start isEmpty. Operand 107560 states and 113937 transitions. [2024-11-16 04:18:23,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2024-11-16 04:18:23,109 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:18:23,109 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:18:23,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-16 04:18:23,110 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:18:23,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:18:23,110 INFO L85 PathProgramCache]: Analyzing trace with hash 504783747, now seen corresponding path program 1 times [2024-11-16 04:18:23,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:18:23,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764084491] [2024-11-16 04:18:23,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:18:23,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:18:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:18:24,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 467 proven. 470 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-16 04:18:24,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:18:24,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764084491] [2024-11-16 04:18:24,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764084491] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:18:24,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708881752] [2024-11-16 04:18:24,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:18:24,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:18:24,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:18:24,416 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 04:18:24,423 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 04:18:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:18:24,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-16 04:18:24,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:18:25,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 983 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-16 04:18:25,397 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 04:18:25,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708881752] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:18:25,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 04:18:25,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-16 04:18:25,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259706153] [2024-11-16 04:18:25,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:18:25,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 04:18:25,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:18:25,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 04:18:25,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-16 04:18:25,399 INFO L87 Difference]: Start difference. First operand 107560 states and 113937 transitions. Second operand has 5 states, 5 states have (on average 112.8) internal successors, (564), 5 states have internal predecessors, (564), 0 states have call successors, (0), 0 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 04:18:28,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:18:28,257 INFO L93 Difference]: Finished difference Result 231765 states and 245197 transitions. [2024-11-16 04:18:28,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 04:18:28,258 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 112.8) internal successors, (564), 5 states have internal predecessors, (564), 0 states have call successors, (0), 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 592 [2024-11-16 04:18:28,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted.