./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label08.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_label08.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 9e8eccafd5332366d591fd0f563128386bcd6073a7941113bfddd094bb357fdc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 04:16:16,660 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 04:16:16,762 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 04:16:16,768 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 04:16:16,769 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 04:16:16,808 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 04:16:16,809 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 04:16:16,809 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 04:16:16,810 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 04:16:16,811 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 04:16:16,812 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 04:16:16,812 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 04:16:16,813 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 04:16:16,815 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 04:16:16,815 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 04:16:16,815 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 04:16:16,816 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 04:16:16,816 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 04:16:16,816 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 04:16:16,816 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 04:16:16,816 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 04:16:16,820 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 04:16:16,821 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 04:16:16,821 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 04:16:16,821 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 04:16:16,821 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 04:16:16,822 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 04:16:16,822 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 04:16:16,822 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 04:16:16,822 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 04:16:16,822 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 04:16:16,823 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 04:16:16,823 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:16:16,823 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 04:16:16,823 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 04:16:16,823 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 04:16:16,824 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 04:16:16,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 04:16:16,824 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 04:16:16,824 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 04:16:16,825 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 04:16:16,825 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 04:16:16,825 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e8eccafd5332366d591fd0f563128386bcd6073a7941113bfddd094bb357fdc [2024-11-16 04:16:17,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 04:16:17,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 04:16:17,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 04:16:17,115 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 04:16:17,115 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 04:16:17,116 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label08.c [2024-11-16 04:16:18,541 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 04:16:18,921 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 04:16:18,923 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label08.c [2024-11-16 04:16:18,949 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/070db2161/db748a3202cf4ab5933f7de668f4b4ed/FLAG041e5b2db [2024-11-16 04:16:18,966 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/070db2161/db748a3202cf4ab5933f7de668f4b4ed [2024-11-16 04:16:18,969 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 04:16:18,971 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 04:16:18,974 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 04:16:18,974 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 04:16:18,981 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 04:16:18,982 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:16:18" (1/1) ... [2024-11-16 04:16:18,983 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@afd2d4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:18, skipping insertion in model container [2024-11-16 04:16:18,983 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:16:18" (1/1) ... [2024-11-16 04:16:19,065 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 04:16:19,354 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_label08.c[8572,8585] [2024-11-16 04:16:19,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:16:19,871 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 04:16:19,986 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_label08.c[8572,8585] [2024-11-16 04:16:20,238 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:16:20,258 INFO L204 MainTranslator]: Completed translation [2024-11-16 04:16:20,258 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:20 WrapperNode [2024-11-16 04:16:20,259 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 04:16:20,259 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 04:16:20,260 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 04:16:20,260 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 04:16:20,266 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:20" (1/1) ... [2024-11-16 04:16:20,316 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:20" (1/1) ... [2024-11-16 04:16:20,598 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2612 [2024-11-16 04:16:20,599 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 04:16:20,600 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 04:16:20,600 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 04:16:20,600 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 04:16:20,610 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:20" (1/1) ... [2024-11-16 04:16:20,610 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:20" (1/1) ... [2024-11-16 04:16:20,744 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:20" (1/1) ... [2024-11-16 04:16:20,836 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 04:16:20,837 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:20" (1/1) ... [2024-11-16 04:16:20,837 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:20" (1/1) ... [2024-11-16 04:16:20,992 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:20" (1/1) ... [2024-11-16 04:16:21,003 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:20" (1/1) ... [2024-11-16 04:16:21,016 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:20" (1/1) ... [2024-11-16 04:16:21,031 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:20" (1/1) ... [2024-11-16 04:16:21,054 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 04:16:21,055 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 04:16:21,055 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 04:16:21,055 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 04:16:21,056 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:20" (1/1) ... [2024-11-16 04:16:21,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:16:21,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:16:21,080 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 04:16:21,081 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 04:16:21,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 04:16:21,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 04:16:21,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 04:16:21,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 04:16:21,177 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 04:16:21,179 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 04:16:24,395 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1653: havoc calculate_output_#t~ret7#1; [2024-11-16 04:16:24,489 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-16 04:16:24,490 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 04:16:24,515 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 04:16:24,516 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 04:16:24,516 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:16:24 BoogieIcfgContainer [2024-11-16 04:16:24,516 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 04:16:24,518 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 04:16:24,518 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 04:16:24,523 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 04:16:24,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:16:18" (1/3) ... [2024-11-16 04:16:24,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e73898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:16:24, skipping insertion in model container [2024-11-16 04:16:24,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:16:20" (2/3) ... [2024-11-16 04:16:24,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e73898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:16:24, skipping insertion in model container [2024-11-16 04:16:24,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:16:24" (3/3) ... [2024-11-16 04:16:24,526 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label08.c [2024-11-16 04:16:24,540 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 04:16:24,541 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 04:16:24,622 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 04:16:24,629 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;@2beb9fed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 04:16:24,630 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 04:16:24,636 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 04:16:24,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-16 04:16:24,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:24,647 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:16:24,648 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:24,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:24,653 INFO L85 PathProgramCache]: Analyzing trace with hash -268054934, now seen corresponding path program 1 times [2024-11-16 04:16:24,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:24,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498727263] [2024-11-16 04:16:24,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:24,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:25,072 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 04:16:25,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:25,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498727263] [2024-11-16 04:16:25,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498727263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:25,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:25,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:16:25,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020098010] [2024-11-16 04:16:25,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:25,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:25,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:25,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:25,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:25,110 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 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:27,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:27,459 INFO L93 Difference]: Finished difference Result 1648 states and 3030 transitions. [2024-11-16 04:16:27,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:27,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-16 04:16:27,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:27,480 INFO L225 Difference]: With dead ends: 1648 [2024-11-16 04:16:27,480 INFO L226 Difference]: Without dead ends: 978 [2024-11-16 04:16:27,485 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 04:16:27,488 INFO L432 NwaCegarLoop]: 477 mSDtfsCounter, 432 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 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, 2.2s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:27,489 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 555 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-16 04:16:27,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2024-11-16 04:16:27,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 975. [2024-11-16 04:16:27,562 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 04:16:27,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1467 transitions. [2024-11-16 04:16:27,567 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1467 transitions. Word has length 60 [2024-11-16 04:16:27,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:27,568 INFO L471 AbstractCegarLoop]: Abstraction has 975 states and 1467 transitions. [2024-11-16 04:16:27,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:27,569 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1467 transitions. [2024-11-16 04:16:27,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-16 04:16:27,573 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:27,573 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:16:27,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 04:16:27,574 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:27,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:27,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1109523739, now seen corresponding path program 1 times [2024-11-16 04:16:27,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:27,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965524320] [2024-11-16 04:16:27,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:27,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:27,911 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:16:27,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:27,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965524320] [2024-11-16 04:16:27,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965524320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:27,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:27,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:16:27,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954545592] [2024-11-16 04:16:27,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:27,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:27,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:27,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:27,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:27,917 INFO L87 Difference]: Start difference. First operand 975 states and 1467 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:30,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:30,009 INFO L93 Difference]: Finished difference Result 2822 states and 4250 transitions. [2024-11-16 04:16:30,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:30,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2024-11-16 04:16:30,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:30,018 INFO L225 Difference]: With dead ends: 2822 [2024-11-16 04:16:30,019 INFO L226 Difference]: Without dead ends: 1849 [2024-11-16 04:16:30,048 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 04:16:30,051 INFO L432 NwaCegarLoop]: 856 mSDtfsCounter, 433 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 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, 2.0s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:30,051 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 926 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-16 04:16:30,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2024-11-16 04:16:30,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1847. [2024-11-16 04:16:30,100 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 04:16:30,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1847 states to 1847 states and 2509 transitions. [2024-11-16 04:16:30,106 INFO L78 Accepts]: Start accepts. Automaton has 1847 states and 2509 transitions. Word has length 131 [2024-11-16 04:16:30,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:30,108 INFO L471 AbstractCegarLoop]: Abstraction has 1847 states and 2509 transitions. [2024-11-16 04:16:30,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:30,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1847 states and 2509 transitions. [2024-11-16 04:16:30,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-16 04:16:30,118 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:30,119 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:16:30,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 04:16:30,120 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:30,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:30,124 INFO L85 PathProgramCache]: Analyzing trace with hash -378540390, now seen corresponding path program 1 times [2024-11-16 04:16:30,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:30,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287440372] [2024-11-16 04:16:30,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:30,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:30,338 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:16:30,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:30,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287440372] [2024-11-16 04:16:30,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287440372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:30,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:30,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:16:30,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381171339] [2024-11-16 04:16:30,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:30,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:30,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:30,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:30,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:30,341 INFO L87 Difference]: Start difference. First operand 1847 states and 2509 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 04:16:32,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:32,338 INFO L93 Difference]: Finished difference Result 5409 states and 7340 transitions. [2024-11-16 04:16:32,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:32,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2024-11-16 04:16:32,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:32,347 INFO L225 Difference]: With dead ends: 5409 [2024-11-16 04:16:32,347 INFO L226 Difference]: Without dead ends: 2708 [2024-11-16 04:16:32,351 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 04:16:32,352 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 04:16:32,353 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 04:16:32,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2708 states. [2024-11-16 04:16:32,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2708 to 2708. [2024-11-16 04:16:32,391 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 04:16:32,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2708 states to 2708 states and 3225 transitions. [2024-11-16 04:16:32,397 INFO L78 Accepts]: Start accepts. Automaton has 2708 states and 3225 transitions. Word has length 153 [2024-11-16 04:16:32,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:32,399 INFO L471 AbstractCegarLoop]: Abstraction has 2708 states and 3225 transitions. [2024-11-16 04:16:32,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 04:16:32,400 INFO L276 IsEmpty]: Start isEmpty. Operand 2708 states and 3225 transitions. [2024-11-16 04:16:32,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-16 04:16:32,403 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:32,403 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 04:16:32,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 04:16:32,404 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:32,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:32,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1332411559, now seen corresponding path program 1 times [2024-11-16 04:16:32,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:32,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486508497] [2024-11-16 04:16:32,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:32,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:32,723 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:16:32,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:32,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486508497] [2024-11-16 04:16:32,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486508497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:32,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:32,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:16:32,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697316345] [2024-11-16 04:16:32,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:32,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:32,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:32,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:32,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:32,727 INFO L87 Difference]: Start difference. First operand 2708 states and 3225 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states 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 04:16:34,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:34,404 INFO L93 Difference]: Finished difference Result 7126 states and 8616 transitions. [2024-11-16 04:16:34,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:34,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 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 214 [2024-11-16 04:16:34,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:34,418 INFO L225 Difference]: With dead ends: 7126 [2024-11-16 04:16:34,418 INFO L226 Difference]: Without dead ends: 4420 [2024-11-16 04:16:34,422 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 04:16:34,423 INFO L432 NwaCegarLoop]: 729 mSDtfsCounter, 496 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.6s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:34,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 789 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-16 04:16:34,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4420 states. [2024-11-16 04:16:34,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4420 to 4420. [2024-11-16 04:16:34,481 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 04:16:34,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4420 states to 4420 states and 5171 transitions. [2024-11-16 04:16:34,489 INFO L78 Accepts]: Start accepts. Automaton has 4420 states and 5171 transitions. Word has length 214 [2024-11-16 04:16:34,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:34,490 INFO L471 AbstractCegarLoop]: Abstraction has 4420 states and 5171 transitions. [2024-11-16 04:16:34,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states 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 04:16:34,490 INFO L276 IsEmpty]: Start isEmpty. Operand 4420 states and 5171 transitions. [2024-11-16 04:16:34,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-16 04:16:34,493 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:34,493 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-16 04:16:34,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 04:16:34,493 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:34,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:34,494 INFO L85 PathProgramCache]: Analyzing trace with hash -253489804, now seen corresponding path program 1 times [2024-11-16 04:16:34,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:34,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169398477] [2024-11-16 04:16:34,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:34,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:34,696 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-16 04:16:34,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:34,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169398477] [2024-11-16 04:16:34,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169398477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:34,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:34,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:16:34,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537170625] [2024-11-16 04:16:34,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:34,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:34,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:34,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:34,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:34,700 INFO L87 Difference]: Start difference. First operand 4420 states and 5171 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 04:16:36,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:36,313 INFO L93 Difference]: Finished difference Result 10963 states and 12997 transitions. [2024-11-16 04:16:36,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:36,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 216 [2024-11-16 04:16:36,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:36,333 INFO L225 Difference]: With dead ends: 10963 [2024-11-16 04:16:36,334 INFO L226 Difference]: Without dead ends: 6544 [2024-11-16 04:16:36,339 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 04:16:36,340 INFO L432 NwaCegarLoop]: 385 mSDtfsCounter, 393 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 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, 1.5s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:36,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 449 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-16 04:16:36,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6544 states. [2024-11-16 04:16:36,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6544 to 4393. [2024-11-16 04:16:36,418 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 04:16:36,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4393 states to 4393 states and 5130 transitions. [2024-11-16 04:16:36,426 INFO L78 Accepts]: Start accepts. Automaton has 4393 states and 5130 transitions. Word has length 216 [2024-11-16 04:16:36,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:36,427 INFO L471 AbstractCegarLoop]: Abstraction has 4393 states and 5130 transitions. [2024-11-16 04:16:36,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 04:16:36,427 INFO L276 IsEmpty]: Start isEmpty. Operand 4393 states and 5130 transitions. [2024-11-16 04:16:36,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2024-11-16 04:16:36,431 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:36,431 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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 04:16:36,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 04:16:36,432 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:36,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:36,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1964510980, now seen corresponding path program 1 times [2024-11-16 04:16:36,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:36,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566027491] [2024-11-16 04:16:36,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:36,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:36,716 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-16 04:16:36,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:36,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566027491] [2024-11-16 04:16:36,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566027491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:36,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:36,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:16:36,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258991472] [2024-11-16 04:16:36,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:36,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:36,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:36,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:36,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:36,721 INFO L87 Difference]: Start difference. First operand 4393 states and 5130 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:38,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:38,267 INFO L93 Difference]: Finished difference Result 10070 states and 11731 transitions. [2024-11-16 04:16:38,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:38,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 282 [2024-11-16 04:16:38,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:38,286 INFO L225 Difference]: With dead ends: 10070 [2024-11-16 04:16:38,286 INFO L226 Difference]: Without dead ends: 5679 [2024-11-16 04:16:38,291 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 04:16:38,294 INFO L432 NwaCegarLoop]: 836 mSDtfsCounter, 378 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 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, 1.5s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:38,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 899 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-16 04:16:38,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5679 states. [2024-11-16 04:16:38,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5679 to 5247. [2024-11-16 04:16:38,366 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 04:16:38,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5247 states to 5247 states and 6077 transitions. [2024-11-16 04:16:38,379 INFO L78 Accepts]: Start accepts. Automaton has 5247 states and 6077 transitions. Word has length 282 [2024-11-16 04:16:38,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:38,379 INFO L471 AbstractCegarLoop]: Abstraction has 5247 states and 6077 transitions. [2024-11-16 04:16:38,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:38,380 INFO L276 IsEmpty]: Start isEmpty. Operand 5247 states and 6077 transitions. [2024-11-16 04:16:38,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-11-16 04:16:38,383 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:38,384 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 04:16:38,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 04:16:38,384 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:38,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:38,385 INFO L85 PathProgramCache]: Analyzing trace with hash 658178158, now seen corresponding path program 1 times [2024-11-16 04:16:38,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:38,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409194330] [2024-11-16 04:16:38,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:38,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:38,842 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 305 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-16 04:16:38,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:38,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409194330] [2024-11-16 04:16:38,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409194330] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:38,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:38,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:16:38,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935021808] [2024-11-16 04:16:38,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:38,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:38,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:38,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:38,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:38,845 INFO L87 Difference]: Start difference. First operand 5247 states and 6077 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states 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 04:16:40,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:40,671 INFO L93 Difference]: Finished difference Result 13084 states and 15256 transitions. [2024-11-16 04:16:40,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:40,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 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 04:16:40,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:40,696 INFO L225 Difference]: With dead ends: 13084 [2024-11-16 04:16:40,696 INFO L226 Difference]: Without dead ends: 7410 [2024-11-16 04:16:40,704 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 04:16:40,704 INFO L432 NwaCegarLoop]: 588 mSDtfsCounter, 496 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:40,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 634 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-16 04:16:40,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7410 states. [2024-11-16 04:16:40,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7410 to 6976. [2024-11-16 04:16:40,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6976 states, 6975 states have (on average 1.1632974910394265) internal successors, (8114), 6975 states have internal predecessors, (8114), 0 states have call successors, (0), 0 states 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 04:16:40,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6976 states to 6976 states and 8114 transitions. [2024-11-16 04:16:40,810 INFO L78 Accepts]: Start accepts. Automaton has 6976 states and 8114 transitions. Word has length 295 [2024-11-16 04:16:40,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:40,811 INFO L471 AbstractCegarLoop]: Abstraction has 6976 states and 8114 transitions. [2024-11-16 04:16:40,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states 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 04:16:40,812 INFO L276 IsEmpty]: Start isEmpty. Operand 6976 states and 8114 transitions. [2024-11-16 04:16:40,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-16 04:16:40,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:40,816 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:16:40,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 04:16:40,816 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:40,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:40,817 INFO L85 PathProgramCache]: Analyzing trace with hash 870421643, now seen corresponding path program 1 times [2024-11-16 04:16:40,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:40,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129503477] [2024-11-16 04:16:40,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:40,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:41,022 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 315 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-16 04:16:41,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:41,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129503477] [2024-11-16 04:16:41,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129503477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:41,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:41,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:16:41,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569657800] [2024-11-16 04:16:41,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:41,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:41,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:41,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:41,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:41,029 INFO L87 Difference]: Start difference. First operand 6976 states and 8114 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states 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 04:16:42,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:42,581 INFO L93 Difference]: Finished difference Result 17358 states and 20435 transitions. [2024-11-16 04:16:42,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:42,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 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 300 [2024-11-16 04:16:42,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:42,600 INFO L225 Difference]: With dead ends: 17358 [2024-11-16 04:16:42,600 INFO L226 Difference]: Without dead ends: 10384 [2024-11-16 04:16:42,610 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 04:16:42,611 INFO L432 NwaCegarLoop]: 777 mSDtfsCounter, 380 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:42,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 845 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-16 04:16:42,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10384 states. [2024-11-16 04:16:42,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10384 to 9532. [2024-11-16 04:16:42,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9532 states, 9531 states have (on average 1.1411184555660476) internal successors, (10876), 9531 states have internal predecessors, (10876), 0 states have call successors, (0), 0 states 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 04:16:42,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9532 states to 9532 states and 10876 transitions. [2024-11-16 04:16:42,751 INFO L78 Accepts]: Start accepts. Automaton has 9532 states and 10876 transitions. Word has length 300 [2024-11-16 04:16:42,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:42,752 INFO L471 AbstractCegarLoop]: Abstraction has 9532 states and 10876 transitions. [2024-11-16 04:16:42,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states 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 04:16:42,752 INFO L276 IsEmpty]: Start isEmpty. Operand 9532 states and 10876 transitions. [2024-11-16 04:16:42,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2024-11-16 04:16:42,757 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:42,758 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 04:16:42,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 04:16:42,758 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:42,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:42,759 INFO L85 PathProgramCache]: Analyzing trace with hash 664476647, now seen corresponding path program 1 times [2024-11-16 04:16:42,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:42,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368541743] [2024-11-16 04:16:42,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:42,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:43,041 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 305 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-16 04:16:43,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:43,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368541743] [2024-11-16 04:16:43,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368541743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:43,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:43,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:16:43,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568471062] [2024-11-16 04:16:43,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:43,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:43,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:43,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:43,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:43,044 INFO L87 Difference]: Start difference. First operand 9532 states and 10876 transitions. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states 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 04:16:44,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:44,690 INFO L93 Difference]: Finished difference Result 22486 states and 25732 transitions. [2024-11-16 04:16:44,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:44,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 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 318 [2024-11-16 04:16:44,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:44,716 INFO L225 Difference]: With dead ends: 22486 [2024-11-16 04:16:44,716 INFO L226 Difference]: Without dead ends: 12523 [2024-11-16 04:16:44,728 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 04:16:44,729 INFO L432 NwaCegarLoop]: 247 mSDtfsCounter, 444 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:44,729 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 299 Invalid, 1506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-16 04:16:44,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12523 states. [2024-11-16 04:16:44,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12523 to 11665. [2024-11-16 04:16:44,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11665 states, 11664 states have (on average 1.1469478737997256) internal successors, (13378), 11664 states have internal predecessors, (13378), 0 states have call successors, (0), 0 states 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 04:16:44,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11665 states to 11665 states and 13378 transitions. [2024-11-16 04:16:44,892 INFO L78 Accepts]: Start accepts. Automaton has 11665 states and 13378 transitions. Word has length 318 [2024-11-16 04:16:44,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:44,893 INFO L471 AbstractCegarLoop]: Abstraction has 11665 states and 13378 transitions. [2024-11-16 04:16:44,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states 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 04:16:44,893 INFO L276 IsEmpty]: Start isEmpty. Operand 11665 states and 13378 transitions. [2024-11-16 04:16:44,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2024-11-16 04:16:44,899 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:44,899 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 04:16:44,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 04:16:44,899 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:44,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:44,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1356119218, now seen corresponding path program 1 times [2024-11-16 04:16:44,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:44,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702459355] [2024-11-16 04:16:44,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:44,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:45,353 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 315 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-16 04:16:45,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:45,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702459355] [2024-11-16 04:16:45,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702459355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:45,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:45,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 04:16:45,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252776271] [2024-11-16 04:16:45,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:45,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:16:45,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:45,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:16:45,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:16:45,357 INFO L87 Difference]: Start difference. First operand 11665 states and 13378 transitions. Second operand has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 0 states have call successors, (0), 0 states 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 04:16:48,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:48,061 INFO L93 Difference]: Finished difference Result 41330 states and 47592 transitions. [2024-11-16 04:16:48,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:16:48,061 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 0 states have call successors, (0), 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 323 [2024-11-16 04:16:48,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:48,100 INFO L225 Difference]: With dead ends: 41330 [2024-11-16 04:16:48,100 INFO L226 Difference]: Without dead ends: 28383 [2024-11-16 04:16:48,117 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 04:16:48,119 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 868 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 2613 mSolverCounterSat, 489 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 3102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 489 IncrementalHoareTripleChecker+Valid, 2613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:48,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [868 Valid, 307 Invalid, 3102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [489 Valid, 2613 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-16 04:16:48,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28383 states. [2024-11-16 04:16:48,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28383 to 27907. [2024-11-16 04:16:48,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27907 states, 27906 states have (on average 1.1349888912778614) internal successors, (31673), 27906 states have internal predecessors, (31673), 0 states have call successors, (0), 0 states 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 04:16:48,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27907 states to 27907 states and 31673 transitions. [2024-11-16 04:16:48,445 INFO L78 Accepts]: Start accepts. Automaton has 27907 states and 31673 transitions. Word has length 323 [2024-11-16 04:16:48,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:48,446 INFO L471 AbstractCegarLoop]: Abstraction has 27907 states and 31673 transitions. [2024-11-16 04:16:48,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 0 states have call successors, (0), 0 states 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 04:16:48,446 INFO L276 IsEmpty]: Start isEmpty. Operand 27907 states and 31673 transitions. [2024-11-16 04:16:48,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2024-11-16 04:16:48,453 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:48,454 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:16:48,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 04:16:48,455 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:48,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:48,455 INFO L85 PathProgramCache]: Analyzing trace with hash 633473567, now seen corresponding path program 1 times [2024-11-16 04:16:48,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:48,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494567190] [2024-11-16 04:16:48,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:48,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:48,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:48,887 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-16 04:16:48,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:48,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494567190] [2024-11-16 04:16:48,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494567190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:48,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:48,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:16:48,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640789314] [2024-11-16 04:16:48,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:48,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:48,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:48,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:48,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:48,889 INFO L87 Difference]: Start difference. First operand 27907 states and 31673 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 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 04:16:50,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:50,734 INFO L93 Difference]: Finished difference Result 71222 states and 81046 transitions. [2024-11-16 04:16:50,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:50,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 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 351 [2024-11-16 04:16:50,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:50,800 INFO L225 Difference]: With dead ends: 71222 [2024-11-16 04:16:50,800 INFO L226 Difference]: Without dead ends: 42878 [2024-11-16 04:16:50,830 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 04:16:50,831 INFO L432 NwaCegarLoop]: 657 mSDtfsCounter, 449 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:50,831 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 709 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-16 04:16:50,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42878 states. [2024-11-16 04:16:51,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42878 to 41130. [2024-11-16 04:16:51,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41130 states, 41129 states have (on average 1.1222251939021128) internal successors, (46156), 41129 states have internal predecessors, (46156), 0 states have call successors, (0), 0 states 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 04:16:51,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41130 states to 41130 states and 46156 transitions. [2024-11-16 04:16:51,662 INFO L78 Accepts]: Start accepts. Automaton has 41130 states and 46156 transitions. Word has length 351 [2024-11-16 04:16:51,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:51,663 INFO L471 AbstractCegarLoop]: Abstraction has 41130 states and 46156 transitions. [2024-11-16 04:16:51,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 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 04:16:51,663 INFO L276 IsEmpty]: Start isEmpty. Operand 41130 states and 46156 transitions. [2024-11-16 04:16:51,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2024-11-16 04:16:51,672 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:51,673 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:16:51,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 04:16:51,673 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:51,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:51,674 INFO L85 PathProgramCache]: Analyzing trace with hash -244923831, now seen corresponding path program 1 times [2024-11-16 04:16:51,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:51,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368871742] [2024-11-16 04:16:51,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:51,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:52,055 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-16 04:16:52,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:52,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368871742] [2024-11-16 04:16:52,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368871742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:52,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:52,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:16:52,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330172391] [2024-11-16 04:16:52,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:52,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:52,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:52,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:52,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:52,059 INFO L87 Difference]: Start difference. First operand 41130 states and 46156 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states 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 04:16:53,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:53,871 INFO L93 Difference]: Finished difference Result 91642 states and 103112 transitions. [2024-11-16 04:16:53,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:53,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 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 396 [2024-11-16 04:16:53,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:53,928 INFO L225 Difference]: With dead ends: 91642 [2024-11-16 04:16:53,929 INFO L226 Difference]: Without dead ends: 50084 [2024-11-16 04:16:53,952 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 04:16:53,953 INFO L432 NwaCegarLoop]: 679 mSDtfsCounter, 440 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:53,953 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 732 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-16 04:16:53,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50084 states. [2024-11-16 04:16:54,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50084 to 50077. [2024-11-16 04:16:54,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50077 states, 50076 states have (on average 1.1126887131560028) internal successors, (55719), 50076 states have internal predecessors, (55719), 0 states have call successors, (0), 0 states 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 04:16:54,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50077 states to 50077 states and 55719 transitions. [2024-11-16 04:16:54,498 INFO L78 Accepts]: Start accepts. Automaton has 50077 states and 55719 transitions. Word has length 396 [2024-11-16 04:16:54,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:54,500 INFO L471 AbstractCegarLoop]: Abstraction has 50077 states and 55719 transitions. [2024-11-16 04:16:54,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states 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 04:16:54,501 INFO L276 IsEmpty]: Start isEmpty. Operand 50077 states and 55719 transitions. [2024-11-16 04:16:54,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2024-11-16 04:16:54,514 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:54,515 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:16:54,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 04:16:54,516 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:54,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:54,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1453916546, now seen corresponding path program 1 times [2024-11-16 04:16:54,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:54,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673084946] [2024-11-16 04:16:54,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:54,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:55,306 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 248 proven. 83 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-16 04:16:55,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:55,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673084946] [2024-11-16 04:16:55,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673084946] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:16:55,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494447404] [2024-11-16 04:16:55,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:55,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:16:55,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:16:55,310 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 04:16:55,311 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 04:16:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:55,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 04:16:55,509 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:16:55,930 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 248 proven. 83 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-16 04:16:55,932 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 04:16:56,344 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 331 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-16 04:16:56,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494447404] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 04:16:56,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 04:16:56,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-16 04:16:56,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484685336] [2024-11-16 04:16:56,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:56,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:16:56,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:56,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:16:56,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-16 04:16:56,347 INFO L87 Difference]: Start difference. First operand 50077 states and 55719 transitions. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:59,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:59,054 INFO L93 Difference]: Finished difference Result 121057 states and 134482 transitions. [2024-11-16 04:16:59,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:16:59,055 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 399 [2024-11-16 04:16:59,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:59,157 INFO L225 Difference]: With dead ends: 121057 [2024-11-16 04:16:59,157 INFO L226 Difference]: Without dead ends: 70111 [2024-11-16 04:16:59,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 799 GetRequests, 795 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-16 04:16:59,190 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 862 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 2111 mSolverCounterSat, 691 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 2802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 691 IncrementalHoareTripleChecker+Valid, 2111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:59,190 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 148 Invalid, 2802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [691 Valid, 2111 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-16 04:16:59,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70111 states. [2024-11-16 04:17:00,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70111 to 67978. [2024-11-16 04:17:00,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67978 states, 67977 states have (on average 1.0976800976800978) internal successors, (74617), 67977 states have internal predecessors, (74617), 0 states have call successors, (0), 0 states 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 04:17:00,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67978 states to 67978 states and 74617 transitions. [2024-11-16 04:17:00,257 INFO L78 Accepts]: Start accepts. Automaton has 67978 states and 74617 transitions. Word has length 399 [2024-11-16 04:17:00,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:00,258 INFO L471 AbstractCegarLoop]: Abstraction has 67978 states and 74617 transitions. [2024-11-16 04:17:00,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:17:00,258 INFO L276 IsEmpty]: Start isEmpty. Operand 67978 states and 74617 transitions. [2024-11-16 04:17:00,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2024-11-16 04:17:00,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:00,269 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:17:00,442 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 04:17:00,471 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,SelfDestructingSolverStorable12 [2024-11-16 04:17:00,471 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:00,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:00,472 INFO L85 PathProgramCache]: Analyzing trace with hash 416137296, now seen corresponding path program 1 times [2024-11-16 04:17:00,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:00,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063804959] [2024-11-16 04:17:00,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:00,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:00,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:01,160 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 361 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-16 04:17:01,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:01,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063804959] [2024-11-16 04:17:01,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063804959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:01,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:17:01,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:17:01,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806607172] [2024-11-16 04:17:01,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:01,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:17:01,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:01,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:17:01,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:17:01,164 INFO L87 Difference]: Start difference. First operand 67978 states and 74617 transitions. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states 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 04:17:02,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:02,786 INFO L93 Difference]: Finished difference Result 139792 states and 153347 transitions. [2024-11-16 04:17:02,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:17:02,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 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 429 [2024-11-16 04:17:02,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:02,864 INFO L225 Difference]: With dead ends: 139792 [2024-11-16 04:17:02,864 INFO L226 Difference]: Without dead ends: 71816 [2024-11-16 04:17:02,910 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 04:17:02,910 INFO L432 NwaCegarLoop]: 300 mSDtfsCounter, 358 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:02,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 353 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-16 04:17:03,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71816 states. [2024-11-16 04:17:03,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71816 to 70958. [2024-11-16 04:17:03,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70958 states, 70957 states have (on average 1.0957622221909042) internal successors, (77752), 70957 states have internal predecessors, (77752), 0 states have call successors, (0), 0 states 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 04:17:03,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70958 states to 70958 states and 77752 transitions. [2024-11-16 04:17:04,000 INFO L78 Accepts]: Start accepts. Automaton has 70958 states and 77752 transitions. Word has length 429 [2024-11-16 04:17:04,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:04,001 INFO L471 AbstractCegarLoop]: Abstraction has 70958 states and 77752 transitions. [2024-11-16 04:17:04,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states 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 04:17:04,001 INFO L276 IsEmpty]: Start isEmpty. Operand 70958 states and 77752 transitions. [2024-11-16 04:17:04,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2024-11-16 04:17:04,017 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:04,017 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 04:17:04,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 04:17:04,017 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:04,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:04,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1505887371, now seen corresponding path program 1 times [2024-11-16 04:17:04,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:04,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166977677] [2024-11-16 04:17:04,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:04,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:04,513 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 430 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-16 04:17:04,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:04,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166977677] [2024-11-16 04:17:04,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166977677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:04,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:17:04,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:17:04,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304871220] [2024-11-16 04:17:04,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:04,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:17:04,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:04,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:17:04,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:17:04,517 INFO L87 Difference]: Start difference. First operand 70958 states and 77752 transitions. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states 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 04:17:06,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:06,230 INFO L93 Difference]: Finished difference Result 148734 states and 163274 transitions. [2024-11-16 04:17:06,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:17:06,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 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 439 [2024-11-16 04:17:06,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:06,337 INFO L225 Difference]: With dead ends: 148734 [2024-11-16 04:17:06,337 INFO L226 Difference]: Without dead ends: 76922 [2024-11-16 04:17:06,380 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 04:17:06,381 INFO L432 NwaCegarLoop]: 589 mSDtfsCounter, 449 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 1425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:06,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 615 Invalid, 1425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-16 04:17:06,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76922 states. [2024-11-16 04:17:07,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76922 to 66663. [2024-11-16 04:17:07,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66663 states, 66662 states have (on average 1.0964417509225646) internal successors, (73091), 66662 states have internal predecessors, (73091), 0 states have call successors, (0), 0 states 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 04:17:07,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66663 states to 66663 states and 73091 transitions. [2024-11-16 04:17:07,368 INFO L78 Accepts]: Start accepts. Automaton has 66663 states and 73091 transitions. Word has length 439 [2024-11-16 04:17:07,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:07,369 INFO L471 AbstractCegarLoop]: Abstraction has 66663 states and 73091 transitions. [2024-11-16 04:17:07,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states 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 04:17:07,369 INFO L276 IsEmpty]: Start isEmpty. Operand 66663 states and 73091 transitions. [2024-11-16 04:17:07,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2024-11-16 04:17:07,383 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:07,383 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2024-11-16 04:17:07,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 04:17:07,383 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:07,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:07,384 INFO L85 PathProgramCache]: Analyzing trace with hash -2103862642, now seen corresponding path program 1 times [2024-11-16 04:17:07,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:07,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774476558] [2024-11-16 04:17:07,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:07,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:08,497 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 388 proven. 57 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-16 04:17:08,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:08,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774476558] [2024-11-16 04:17:08,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774476558] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:17:08,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927833190] [2024-11-16 04:17:08,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:08,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:17:08,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:17:08,500 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 04:17:08,502 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 04:17:08,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:08,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-16 04:17:08,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:17:09,191 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 447 proven. 83 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-11-16 04:17:09,191 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 04:17:10,093 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 447 proven. 83 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-11-16 04:17:10,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927833190] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 04:17:10,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 04:17:10,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-11-16 04:17:10,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384753551] [2024-11-16 04:17:10,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 04:17:10,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 04:17:10,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:10,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 04:17:10,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-16 04:17:10,097 INFO L87 Difference]: Start difference. First operand 66663 states and 73091 transitions. Second operand has 9 states, 9 states have (on average 84.66666666666667) internal successors, (762), 9 states have internal predecessors, (762), 0 states have call successors, (0), 0 states 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 04:17:19,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:19,454 INFO L93 Difference]: Finished difference Result 170489 states and 186665 transitions. [2024-11-16 04:17:19,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-16 04:17:19,454 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 84.66666666666667) internal successors, (762), 9 states have internal predecessors, (762), 0 states have call successors, (0), 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 444 [2024-11-16 04:17:19,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:19,569 INFO L225 Difference]: With dead ends: 170489 [2024-11-16 04:17:19,569 INFO L226 Difference]: Without dead ends: 102976 [2024-11-16 04:17:19,587 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 909 GetRequests, 893 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2024-11-16 04:17:19,588 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 7879 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 9943 mSolverCounterSat, 2347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7879 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 12290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2347 IncrementalHoareTripleChecker+Valid, 9943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:19,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7879 Valid, 371 Invalid, 12290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2347 Valid, 9943 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2024-11-16 04:17:19,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102976 states. [2024-11-16 04:17:21,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102976 to 92659. [2024-11-16 04:17:21,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92659 states, 92658 states have (on average 1.0857670141811824) internal successors, (100605), 92658 states have internal predecessors, (100605), 0 states have call successors, (0), 0 states 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 04:17:21,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92659 states to 92659 states and 100605 transitions. [2024-11-16 04:17:21,177 INFO L78 Accepts]: Start accepts. Automaton has 92659 states and 100605 transitions. Word has length 444 [2024-11-16 04:17:21,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:21,177 INFO L471 AbstractCegarLoop]: Abstraction has 92659 states and 100605 transitions. [2024-11-16 04:17:21,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 84.66666666666667) internal successors, (762), 9 states have internal predecessors, (762), 0 states have call successors, (0), 0 states 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 04:17:21,177 INFO L276 IsEmpty]: Start isEmpty. Operand 92659 states and 100605 transitions. [2024-11-16 04:17:21,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2024-11-16 04:17:21,185 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:21,185 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-16 04:17:21,197 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 04:17:21,385 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,SelfDestructingSolverStorable15 [2024-11-16 04:17:21,386 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:21,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:21,386 INFO L85 PathProgramCache]: Analyzing trace with hash -961519909, now seen corresponding path program 1 times [2024-11-16 04:17:21,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:21,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519505401] [2024-11-16 04:17:21,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:21,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:21,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:21,827 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 406 proven. 74 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-11-16 04:17:21,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:21,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519505401] [2024-11-16 04:17:21,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519505401] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:17:21,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225879865] [2024-11-16 04:17:21,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:21,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:17:21,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:17:21,830 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 04:17:21,832 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 04:17:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:22,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 04:17:22,205 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:17:22,386 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 406 proven. 74 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-11-16 04:17:22,386 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 04:17:22,627 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 480 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-11-16 04:17:22,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225879865] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 04:17:22,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 04:17:22,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-16 04:17:22,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889072855] [2024-11-16 04:17:22,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:22,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:17:22,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:22,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:17:22,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-16 04:17:22,629 INFO L87 Difference]: Start difference. First operand 92659 states and 100605 transitions. Second operand has 4 states, 4 states have (on average 87.75) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states 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 04:17:25,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:25,411 INFO L93 Difference]: Finished difference Result 199400 states and 216399 transitions. [2024-11-16 04:17:25,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:17:25,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 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 474 [2024-11-16 04:17:25,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:25,537 INFO L225 Difference]: With dead ends: 199400 [2024-11-16 04:17:25,537 INFO L226 Difference]: Without dead ends: 107169 [2024-11-16 04:17:25,572 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 949 GetRequests, 945 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-16 04:17:25,573 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 816 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 2252 mSolverCounterSat, 435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 2687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 2252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:25,573 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 219 Invalid, 2687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [435 Valid, 2252 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-16 04:17:25,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107169 states. [2024-11-16 04:17:26,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107169 to 102908. [2024-11-16 04:17:26,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102908 states, 102907 states have (on average 1.0844743311922416) internal successors, (111600), 102907 states have internal predecessors, (111600), 0 states have call successors, (0), 0 states 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 04:17:26,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102908 states to 102908 states and 111600 transitions. [2024-11-16 04:17:26,994 INFO L78 Accepts]: Start accepts. Automaton has 102908 states and 111600 transitions. Word has length 474 [2024-11-16 04:17:26,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:26,994 INFO L471 AbstractCegarLoop]: Abstraction has 102908 states and 111600 transitions. [2024-11-16 04:17:26,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states 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 04:17:26,994 INFO L276 IsEmpty]: Start isEmpty. Operand 102908 states and 111600 transitions. [2024-11-16 04:17:27,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2024-11-16 04:17:27,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:27,006 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:17:27,018 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 04:17:27,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:17:27,207 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:27,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:27,207 INFO L85 PathProgramCache]: Analyzing trace with hash 616786019, now seen corresponding path program 1 times [2024-11-16 04:17:27,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:27,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178748219] [2024-11-16 04:17:27,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:27,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:27,984 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-11-16 04:17:27,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:27,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178748219] [2024-11-16 04:17:27,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178748219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:27,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:17:27,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:17:27,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204983062] [2024-11-16 04:17:27,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:27,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:17:27,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:27,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:17:27,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:17:27,988 INFO L87 Difference]: Start difference. First operand 102908 states and 111600 transitions. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states 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 04:17:29,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:29,746 INFO L93 Difference]: Finished difference Result 204530 states and 221832 transitions. [2024-11-16 04:17:29,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:17:29,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 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 506 [2024-11-16 04:17:29,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:29,860 INFO L225 Difference]: With dead ends: 204530 [2024-11-16 04:17:29,860 INFO L226 Difference]: Without dead ends: 102049 [2024-11-16 04:17:29,901 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 04:17:29,902 INFO L432 NwaCegarLoop]: 642 mSDtfsCounter, 437 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:29,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 700 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 04:17:29,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102049 states. [2024-11-16 04:17:30,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102049 to 96933. [2024-11-16 04:17:30,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96933 states, 96932 states have (on average 1.071854495935295) internal successors, (103897), 96932 states have internal predecessors, (103897), 0 states have call successors, (0), 0 states 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 04:17:30,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96933 states to 96933 states and 103897 transitions. [2024-11-16 04:17:30,964 INFO L78 Accepts]: Start accepts. Automaton has 96933 states and 103897 transitions. Word has length 506 [2024-11-16 04:17:30,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:30,965 INFO L471 AbstractCegarLoop]: Abstraction has 96933 states and 103897 transitions. [2024-11-16 04:17:30,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states 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 04:17:30,965 INFO L276 IsEmpty]: Start isEmpty. Operand 96933 states and 103897 transitions. [2024-11-16 04:17:30,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2024-11-16 04:17:30,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:30,978 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2024-11-16 04:17:30,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-16 04:17:30,978 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:30,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:30,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1773864212, now seen corresponding path program 1 times [2024-11-16 04:17:30,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:30,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844897940] [2024-11-16 04:17:30,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:30,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:31,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:31,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 498 proven. 0 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2024-11-16 04:17:31,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:31,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844897940] [2024-11-16 04:17:31,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844897940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:31,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:17:31,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:17:31,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264771128] [2024-11-16 04:17:31,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:31,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:17:31,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:31,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:17:31,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:17:31,785 INFO L87 Difference]: Start difference. First operand 96933 states and 103897 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 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)