./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label15.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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_label15.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 a8ce96d555e872b609ed7174eef821f9a0406316106ba92ad582ec48aa272726 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:51:22,304 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:51:22,358 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:51:22,364 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:51:22,367 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:51:22,389 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:51:22,390 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:51:22,390 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:51:22,391 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:51:22,393 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:51:22,393 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:51:22,393 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:51:22,394 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:51:22,394 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:51:22,395 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:51:22,395 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:51:22,397 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:51:22,400 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:51:22,401 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:51:22,401 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:51:22,401 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:51:22,402 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:51:22,402 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:51:22,402 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:51:22,403 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:51:22,403 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:51:22,403 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:51:22,403 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:51:22,404 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:51:22,404 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:51:22,404 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:51:22,404 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:51:22,405 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:51:22,405 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:51:22,405 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:51:22,405 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:51:22,406 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:51:22,406 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:51:22,406 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:51:22,406 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:51:22,406 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:51:22,408 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:51:22,409 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8ce96d555e872b609ed7174eef821f9a0406316106ba92ad582ec48aa272726 [2024-11-09 19:51:22,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:51:22,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:51:22,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:51:22,735 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:51:22,737 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:51:22,739 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label15.c [2024-11-09 19:51:24,189 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:51:24,586 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:51:24,587 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label15.c [2024-11-09 19:51:24,612 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9506a12fd/6e6cc305cd6e474d94c5352ec355ffb4/FLAG409b4a125 [2024-11-09 19:51:24,631 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9506a12fd/6e6cc305cd6e474d94c5352ec355ffb4 [2024-11-09 19:51:24,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:51:24,638 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:51:24,638 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:51:24,638 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:51:24,643 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:51:24,644 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:51:24" (1/1) ... [2024-11-09 19:51:24,645 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@310d2034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:24, skipping insertion in model container [2024-11-09 19:51:24,645 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:51:24" (1/1) ... [2024-11-09 19:51:24,733 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:51:24,974 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_label15.c[5490,5503] [2024-11-09 19:51:25,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:51:25,520 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:51:25,549 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_label15.c[5490,5503] [2024-11-09 19:51:25,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:51:25,792 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:51:25,793 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:25 WrapperNode [2024-11-09 19:51:25,793 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:51:25,794 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:51:25,794 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:51:25,795 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:51:25,801 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:25" (1/1) ... [2024-11-09 19:51:25,850 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:25" (1/1) ... [2024-11-09 19:51:26,164 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2612 [2024-11-09 19:51:26,165 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:51:26,165 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:51:26,165 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:51:26,166 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:51:26,176 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:25" (1/1) ... [2024-11-09 19:51:26,176 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:25" (1/1) ... [2024-11-09 19:51:26,209 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:25" (1/1) ... [2024-11-09 19:51:26,382 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]. [2024-11-09 19:51:26,382 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:25" (1/1) ... [2024-11-09 19:51:26,382 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:25" (1/1) ... [2024-11-09 19:51:26,542 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:25" (1/1) ... [2024-11-09 19:51:26,556 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:25" (1/1) ... [2024-11-09 19:51:26,574 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:25" (1/1) ... [2024-11-09 19:51:26,590 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:25" (1/1) ... [2024-11-09 19:51:26,623 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:51:26,626 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:51:26,626 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:51:26,626 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:51:26,627 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:25" (1/1) ... [2024-11-09 19:51:26,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:51:26,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:51:26,663 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) [2024-11-09 19:51:26,666 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 [2024-11-09 19:51:26,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:51:26,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:51:26,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:51:26,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:51:26,777 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:51:26,779 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:51:30,638 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1653: havoc calculate_output_#t~ret7#1; [2024-11-09 19:51:30,842 INFO L? ?]: Removed 949 outVars from TransFormulas that were not future-live. [2024-11-09 19:51:30,843 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:51:30,883 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:51:30,885 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:51:30,886 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:51:30 BoogieIcfgContainer [2024-11-09 19:51:30,886 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:51:30,888 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:51:30,888 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:51:30,891 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:51:30,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:51:24" (1/3) ... [2024-11-09 19:51:30,892 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f8fc1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:51:30, skipping insertion in model container [2024-11-09 19:51:30,893 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:25" (2/3) ... [2024-11-09 19:51:30,893 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f8fc1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:51:30, skipping insertion in model container [2024-11-09 19:51:30,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:51:30" (3/3) ... [2024-11-09 19:51:30,896 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label15.c [2024-11-09 19:51:30,912 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:51:30,913 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:51:31,000 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:51:31,006 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;@2c503804, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:51:31,007 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:51:31,013 INFO L276 IsEmpty]: Start isEmpty. Operand has 593 states, 591 states have (on average 2.4077834179357023) internal successors, (1423), 592 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:31,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-09 19:51:31,023 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:31,024 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:51:31,025 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:31,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:31,031 INFO L85 PathProgramCache]: Analyzing trace with hash 337040683, now seen corresponding path program 1 times [2024-11-09 19:51:31,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:31,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111546080] [2024-11-09 19:51:31,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:31,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:31,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:51:31,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:31,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111546080] [2024-11-09 19:51:31,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111546080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:31,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:31,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:51:31,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763419211] [2024-11-09 19:51:31,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:31,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:51:31,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:31,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:51:31,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:31,414 INFO L87 Difference]: Start difference. First operand has 593 states, 591 states have (on average 2.4077834179357023) internal successors, (1423), 592 states have internal predecessors, (1423), 0 states have call successors, (0), 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 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:34,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:34,559 INFO L93 Difference]: Finished difference Result 1686 states and 4154 transitions. [2024-11-09 19:51:34,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:51:34,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-09 19:51:34,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:34,580 INFO L225 Difference]: With dead ends: 1686 [2024-11-09 19:51:34,581 INFO L226 Difference]: Without dead ends: 1014 [2024-11-09 19:51:34,586 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 [2024-11-09 19:51:34,589 INFO L432 NwaCegarLoop]: 170 mSDtfsCounter, 903 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 2316 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 2674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 2316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:34,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 225 Invalid, 2674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 2316 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-09 19:51:34,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2024-11-09 19:51:34,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 999. [2024-11-09 19:51:34,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 998 states have (on average 2.4509018036072145) internal successors, (2446), 998 states have internal predecessors, (2446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:34,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 2446 transitions. [2024-11-09 19:51:34,697 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 2446 transitions. Word has length 38 [2024-11-09 19:51:34,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:34,697 INFO L471 AbstractCegarLoop]: Abstraction has 999 states and 2446 transitions. [2024-11-09 19:51:34,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:34,698 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 2446 transitions. [2024-11-09 19:51:34,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-09 19:51:34,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:34,703 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:51:34,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:51:34,705 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:34,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:34,705 INFO L85 PathProgramCache]: Analyzing trace with hash -385390828, now seen corresponding path program 1 times [2024-11-09 19:51:34,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:34,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104569812] [2024-11-09 19:51:34,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:34,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:34,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:34,954 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:51:34,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:34,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104569812] [2024-11-09 19:51:34,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104569812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:34,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:34,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:51:34,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266626404] [2024-11-09 19:51:34,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:34,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:51:34,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:34,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:51:34,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:34,963 INFO L87 Difference]: Start difference. First operand 999 states and 2446 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:37,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:37,909 INFO L93 Difference]: Finished difference Result 2874 states and 7176 transitions. [2024-11-09 19:51:37,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:51:37,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-11-09 19:51:37,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:37,919 INFO L225 Difference]: With dead ends: 2874 [2024-11-09 19:51:37,920 INFO L226 Difference]: Without dead ends: 1877 [2024-11-09 19:51:37,923 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 [2024-11-09 19:51:37,924 INFO L432 NwaCegarLoop]: 389 mSDtfsCounter, 763 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2122 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 2407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 2122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:37,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 466 Invalid, 2407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 2122 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-09 19:51:37,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1877 states. [2024-11-09 19:51:37,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1877 to 1870. [2024-11-09 19:51:37,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1870 states, 1869 states have (on average 2.283574103798823) internal successors, (4268), 1869 states have internal predecessors, (4268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:37,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 4268 transitions. [2024-11-09 19:51:37,968 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 4268 transitions. Word has length 104 [2024-11-09 19:51:37,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:37,969 INFO L471 AbstractCegarLoop]: Abstraction has 1870 states and 4268 transitions. [2024-11-09 19:51:37,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:37,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 4268 transitions. [2024-11-09 19:51:37,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-09 19:51:37,975 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:37,975 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:51:37,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:51:37,976 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:37,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:37,978 INFO L85 PathProgramCache]: Analyzing trace with hash 2015816238, now seen corresponding path program 1 times [2024-11-09 19:51:37,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:37,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680723203] [2024-11-09 19:51:37,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:37,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:38,128 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:51:38,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:38,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680723203] [2024-11-09 19:51:38,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680723203] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:38,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:38,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:51:38,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146885425] [2024-11-09 19:51:38,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:38,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:51:38,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:38,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:51:38,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:38,131 INFO L87 Difference]: Start difference. First operand 1870 states and 4268 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:40,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:40,636 INFO L93 Difference]: Finished difference Result 5473 states and 12621 transitions. [2024-11-09 19:51:40,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:51:40,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2024-11-09 19:51:40,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:40,652 INFO L225 Difference]: With dead ends: 5473 [2024-11-09 19:51:40,652 INFO L226 Difference]: Without dead ends: 3605 [2024-11-09 19:51:40,655 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 [2024-11-09 19:51:40,656 INFO L432 NwaCegarLoop]: 509 mSDtfsCounter, 763 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 2097 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 2422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 2097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:40,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 584 Invalid, 2422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 2097 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-09 19:51:40,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3605 states. [2024-11-09 19:51:40,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3605 to 3172. [2024-11-09 19:51:40,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3172 states, 3171 states have (on average 2.150110375275938) internal successors, (6818), 3171 states have internal predecessors, (6818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:40,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3172 states to 3172 states and 6818 transitions. [2024-11-09 19:51:40,719 INFO L78 Accepts]: Start accepts. Automaton has 3172 states and 6818 transitions. Word has length 106 [2024-11-09 19:51:40,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:40,720 INFO L471 AbstractCegarLoop]: Abstraction has 3172 states and 6818 transitions. [2024-11-09 19:51:40,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:40,721 INFO L276 IsEmpty]: Start isEmpty. Operand 3172 states and 6818 transitions. [2024-11-09 19:51:40,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-09 19:51:40,722 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:40,722 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:51:40,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:51:40,723 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:40,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:40,723 INFO L85 PathProgramCache]: Analyzing trace with hash 512088447, now seen corresponding path program 1 times [2024-11-09 19:51:40,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:40,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860525491] [2024-11-09 19:51:40,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:40,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:40,999 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:51:41,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:41,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860525491] [2024-11-09 19:51:41,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860525491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:41,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:41,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:51:41,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109493523] [2024-11-09 19:51:41,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:41,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:51:41,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:41,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:51:41,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:51:41,005 INFO L87 Difference]: Start difference. First operand 3172 states and 6818 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:45,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:45,184 INFO L93 Difference]: Finished difference Result 10238 states and 22605 transitions. [2024-11-09 19:51:45,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:51:45,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2024-11-09 19:51:45,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:45,215 INFO L225 Difference]: With dead ends: 10238 [2024-11-09 19:51:45,215 INFO L226 Difference]: Without dead ends: 7068 [2024-11-09 19:51:45,220 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:51:45,221 INFO L432 NwaCegarLoop]: 314 mSDtfsCounter, 1724 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 4197 mSolverCounterSat, 751 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1724 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 4948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 751 IncrementalHoareTripleChecker+Valid, 4197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:45,221 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1724 Valid, 425 Invalid, 4948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [751 Valid, 4197 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-09 19:51:45,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7068 states. [2024-11-09 19:51:45,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7068 to 7063. [2024-11-09 19:51:45,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7063 states, 7062 states have (on average 2.145284621920136) internal successors, (15150), 7062 states have internal predecessors, (15150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:45,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7063 states to 7063 states and 15150 transitions. [2024-11-09 19:51:45,370 INFO L78 Accepts]: Start accepts. Automaton has 7063 states and 15150 transitions. Word has length 109 [2024-11-09 19:51:45,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:45,371 INFO L471 AbstractCegarLoop]: Abstraction has 7063 states and 15150 transitions. [2024-11-09 19:51:45,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:45,371 INFO L276 IsEmpty]: Start isEmpty. Operand 7063 states and 15150 transitions. [2024-11-09 19:51:45,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-09 19:51:45,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:45,375 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:51:45,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:51:45,377 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:45,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:45,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1025640040, now seen corresponding path program 1 times [2024-11-09 19:51:45,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:45,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890526608] [2024-11-09 19:51:45,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:45,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:45,818 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 69 proven. 63 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 19:51:45,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:45,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890526608] [2024-11-09 19:51:45,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890526608] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:51:45,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626716696] [2024-11-09 19:51:45,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:45,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:51:45,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:51:45,821 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) [2024-11-09 19:51:45,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 19:51:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:45,937 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:51:45,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:51:46,021 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-09 19:51:46,022 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:51:46,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626716696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:46,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:51:46,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 19:51:46,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323466037] [2024-11-09 19:51:46,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:46,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:51:46,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:46,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:51:46,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:51:46,025 INFO L87 Difference]: Start difference. First operand 7063 states and 15150 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:48,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:48,445 INFO L93 Difference]: Finished difference Result 18811 states and 40953 transitions. [2024-11-09 19:51:48,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:51:48,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 175 [2024-11-09 19:51:48,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:48,484 INFO L225 Difference]: With dead ends: 18811 [2024-11-09 19:51:48,484 INFO L226 Difference]: Without dead ends: 12176 [2024-11-09 19:51:48,494 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:51:48,495 INFO L432 NwaCegarLoop]: 1050 mSDtfsCounter, 929 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 2169 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 2436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 2169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:48,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 1081 Invalid, 2436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 2169 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-09 19:51:48,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12176 states. [2024-11-09 19:51:48,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12176 to 11323. [2024-11-09 19:51:48,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11323 states, 11322 states have (on average 2.188040982158629) internal successors, (24773), 11322 states have internal predecessors, (24773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:48,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11323 states to 11323 states and 24773 transitions. [2024-11-09 19:51:48,732 INFO L78 Accepts]: Start accepts. Automaton has 11323 states and 24773 transitions. Word has length 175 [2024-11-09 19:51:48,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:48,732 INFO L471 AbstractCegarLoop]: Abstraction has 11323 states and 24773 transitions. [2024-11-09 19:51:48,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:48,733 INFO L276 IsEmpty]: Start isEmpty. Operand 11323 states and 24773 transitions. [2024-11-09 19:51:48,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-09 19:51:48,736 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:48,737 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:51:48,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 19:51:48,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:51:48,938 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:48,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:48,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1855611184, now seen corresponding path program 1 times [2024-11-09 19:51:48,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:48,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074418550] [2024-11-09 19:51:48,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:48,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:49,196 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-09 19:51:49,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:49,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074418550] [2024-11-09 19:51:49,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074418550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:49,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:49,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:51:49,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259194688] [2024-11-09 19:51:49,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:49,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:51:49,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:49,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:51:49,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:49,203 INFO L87 Difference]: Start difference. First operand 11323 states and 24773 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:51,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:51,548 INFO L93 Difference]: Finished difference Result 23070 states and 50496 transitions. [2024-11-09 19:51:51,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:51:51,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 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 183 [2024-11-09 19:51:51,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:51,574 INFO L225 Difference]: With dead ends: 23070 [2024-11-09 19:51:51,575 INFO L226 Difference]: Without dead ends: 11319 [2024-11-09 19:51:51,589 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 [2024-11-09 19:51:51,591 INFO L432 NwaCegarLoop]: 511 mSDtfsCounter, 740 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1796 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 2336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 1796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:51,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 586 Invalid, 2336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 1796 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-09 19:51:51,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11319 states. [2024-11-09 19:51:51,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11319 to 8335. [2024-11-09 19:51:51,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8335 states, 8334 states have (on average 2.0668346532277417) internal successors, (17225), 8334 states have internal predecessors, (17225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:51,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8335 states to 8335 states and 17225 transitions. [2024-11-09 19:51:51,817 INFO L78 Accepts]: Start accepts. Automaton has 8335 states and 17225 transitions. Word has length 183 [2024-11-09 19:51:51,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:51,818 INFO L471 AbstractCegarLoop]: Abstraction has 8335 states and 17225 transitions. [2024-11-09 19:51:51,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:51,818 INFO L276 IsEmpty]: Start isEmpty. Operand 8335 states and 17225 transitions. [2024-11-09 19:51:51,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-09 19:51:51,820 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:51,820 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:51:51,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:51:51,821 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:51,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:51,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1117890797, now seen corresponding path program 1 times [2024-11-09 19:51:51,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:51,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092378616] [2024-11-09 19:51:51,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:51,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:51,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:52,003 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:51:52,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:52,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092378616] [2024-11-09 19:51:52,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092378616] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:52,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:52,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:51:52,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125538139] [2024-11-09 19:51:52,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:52,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:51:52,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:52,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:51:52,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:52,006 INFO L87 Difference]: Start difference. First operand 8335 states and 17225 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:54,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:54,254 INFO L93 Difference]: Finished difference Result 21352 states and 44757 transitions. [2024-11-09 19:51:54,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:51:54,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 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 196 [2024-11-09 19:51:54,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:54,282 INFO L225 Difference]: With dead ends: 21352 [2024-11-09 19:51:54,282 INFO L226 Difference]: Without dead ends: 13019 [2024-11-09 19:51:54,291 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 [2024-11-09 19:51:54,292 INFO L432 NwaCegarLoop]: 1106 mSDtfsCounter, 849 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1981 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 2305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:54,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 1164 Invalid, 2305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1981 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 19:51:54,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13019 states. [2024-11-09 19:51:54,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13019 to 13019. [2024-11-09 19:51:54,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13019 states, 13018 states have (on average 2.0484713473651865) internal successors, (26667), 13018 states have internal predecessors, (26667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:54,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13019 states to 13019 states and 26667 transitions. [2024-11-09 19:51:54,490 INFO L78 Accepts]: Start accepts. Automaton has 13019 states and 26667 transitions. Word has length 196 [2024-11-09 19:51:54,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:54,491 INFO L471 AbstractCegarLoop]: Abstraction has 13019 states and 26667 transitions. [2024-11-09 19:51:54,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:54,491 INFO L276 IsEmpty]: Start isEmpty. Operand 13019 states and 26667 transitions. [2024-11-09 19:51:54,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-11-09 19:51:54,496 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:54,497 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:51:54,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 19:51:54,499 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:54,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:54,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1371965103, now seen corresponding path program 1 times [2024-11-09 19:51:54,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:54,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426004595] [2024-11-09 19:51:54,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:54,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:54,705 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2024-11-09 19:51:54,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:54,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426004595] [2024-11-09 19:51:54,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426004595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:54,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:54,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:51:54,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622684449] [2024-11-09 19:51:54,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:54,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:51:54,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:54,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:51:54,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:54,708 INFO L87 Difference]: Start difference. First operand 13019 states and 26667 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:57,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:57,339 INFO L93 Difference]: Finished difference Result 31562 states and 64701 transitions. [2024-11-09 19:51:57,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:51:57,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 294 [2024-11-09 19:51:57,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:57,366 INFO L225 Difference]: With dead ends: 31562 [2024-11-09 19:51:57,366 INFO L226 Difference]: Without dead ends: 17693 [2024-11-09 19:51:57,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:57,382 INFO L432 NwaCegarLoop]: 1238 mSDtfsCounter, 766 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 2334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:57,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [766 Valid, 1309 Invalid, 2334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-09 19:51:57,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17693 states. [2024-11-09 19:51:57,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17693 to 12143. [2024-11-09 19:51:57,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12143 states, 12142 states have (on average 2.0027178389062756) internal successors, (24317), 12142 states have internal predecessors, (24317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:57,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12143 states to 12143 states and 24317 transitions. [2024-11-09 19:51:57,572 INFO L78 Accepts]: Start accepts. Automaton has 12143 states and 24317 transitions. Word has length 294 [2024-11-09 19:51:57,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:57,573 INFO L471 AbstractCegarLoop]: Abstraction has 12143 states and 24317 transitions. [2024-11-09 19:51:57,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:57,573 INFO L276 IsEmpty]: Start isEmpty. Operand 12143 states and 24317 transitions. [2024-11-09 19:51:57,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2024-11-09 19:51:57,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:57,578 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:51:57,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 19:51:57,578 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:57,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:57,579 INFO L85 PathProgramCache]: Analyzing trace with hash -39575119, now seen corresponding path program 1 times [2024-11-09 19:51:57,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:57,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993583995] [2024-11-09 19:51:57,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:57,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:57,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:57,902 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2024-11-09 19:51:57,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:57,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993583995] [2024-11-09 19:51:57,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993583995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:57,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:57,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:51:57,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276164419] [2024-11-09 19:51:57,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:57,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:51:57,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:57,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:51:57,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:57,908 INFO L87 Difference]: Start difference. First operand 12143 states and 24317 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:00,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:00,233 INFO L93 Difference]: Finished difference Result 31105 states and 62458 transitions. [2024-11-09 19:52:00,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:00,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 311 [2024-11-09 19:52:00,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:00,264 INFO L225 Difference]: With dead ends: 31105 [2024-11-09 19:52:00,264 INFO L226 Difference]: Without dead ends: 18964 [2024-11-09 19:52:00,280 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 [2024-11-09 19:52:00,281 INFO L432 NwaCegarLoop]: 347 mSDtfsCounter, 814 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1978 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 2268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 1978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:00,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 405 Invalid, 2268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 1978 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-09 19:52:00,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18964 states. [2024-11-09 19:52:00,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18964 to 16826. [2024-11-09 19:52:00,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16826 states, 16825 states have (on average 1.9955423476968797) internal successors, (33575), 16825 states have internal predecessors, (33575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:00,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16826 states to 16826 states and 33575 transitions. [2024-11-09 19:52:00,524 INFO L78 Accepts]: Start accepts. Automaton has 16826 states and 33575 transitions. Word has length 311 [2024-11-09 19:52:00,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:00,525 INFO L471 AbstractCegarLoop]: Abstraction has 16826 states and 33575 transitions. [2024-11-09 19:52:00,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:00,526 INFO L276 IsEmpty]: Start isEmpty. Operand 16826 states and 33575 transitions. [2024-11-09 19:52:00,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2024-11-09 19:52:00,534 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:00,535 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:00,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 19:52:00,535 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:00,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:00,536 INFO L85 PathProgramCache]: Analyzing trace with hash 274721980, now seen corresponding path program 1 times [2024-11-09 19:52:00,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:00,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398705519] [2024-11-09 19:52:00,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:00,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:00,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:00,950 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 334 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-09 19:52:00,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:00,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398705519] [2024-11-09 19:52:00,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398705519] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:00,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:00,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:00,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638168983] [2024-11-09 19:52:00,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:00,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:00,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:00,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:00,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:00,953 INFO L87 Difference]: Start difference. First operand 16826 states and 33575 transitions. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:03,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:03,269 INFO L93 Difference]: Finished difference Result 40528 states and 81220 transitions. [2024-11-09 19:52:03,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:03,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 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 355 [2024-11-09 19:52:03,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:03,295 INFO L225 Difference]: With dead ends: 40528 [2024-11-09 19:52:03,295 INFO L226 Difference]: Without dead ends: 22852 [2024-11-09 19:52:03,303 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 [2024-11-09 19:52:03,303 INFO L432 NwaCegarLoop]: 1202 mSDtfsCounter, 740 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2012 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 2258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 2012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:03,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 1279 Invalid, 2258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 2012 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 19:52:03,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22852 states. [2024-11-09 19:52:03,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22852 to 22415. [2024-11-09 19:52:03,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22415 states, 22414 states have (on average 1.9755509949138932) internal successors, (44280), 22414 states have internal predecessors, (44280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:03,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22415 states to 22415 states and 44280 transitions. [2024-11-09 19:52:03,612 INFO L78 Accepts]: Start accepts. Automaton has 22415 states and 44280 transitions. Word has length 355 [2024-11-09 19:52:03,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:03,613 INFO L471 AbstractCegarLoop]: Abstraction has 22415 states and 44280 transitions. [2024-11-09 19:52:03,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:03,613 INFO L276 IsEmpty]: Start isEmpty. Operand 22415 states and 44280 transitions. [2024-11-09 19:52:03,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2024-11-09 19:52:03,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:03,622 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:52:03,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 19:52:03,622 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:03,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:03,623 INFO L85 PathProgramCache]: Analyzing trace with hash -145537456, now seen corresponding path program 1 times [2024-11-09 19:52:03,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:03,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742987529] [2024-11-09 19:52:03,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:03,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:03,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:03,961 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-09 19:52:03,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:03,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742987529] [2024-11-09 19:52:03,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742987529] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:03,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:03,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:03,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52447641] [2024-11-09 19:52:03,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:03,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:03,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:03,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:03,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:03,964 INFO L87 Difference]: Start difference. First operand 22415 states and 44280 transitions. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:06,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:06,584 INFO L93 Difference]: Finished difference Result 55947 states and 110649 transitions. [2024-11-09 19:52:06,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:06,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 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 362 [2024-11-09 19:52:06,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:06,622 INFO L225 Difference]: With dead ends: 55947 [2024-11-09 19:52:06,623 INFO L226 Difference]: Without dead ends: 33094 [2024-11-09 19:52:06,639 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 [2024-11-09 19:52:06,640 INFO L432 NwaCegarLoop]: 1065 mSDtfsCounter, 754 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 2014 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 2282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 2014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:06,640 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 1118 Invalid, 2282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 2014 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-09 19:52:06,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33094 states. [2024-11-09 19:52:07,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33094 to 28396. [2024-11-09 19:52:07,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28396 states, 28395 states have (on average 1.9750660327522451) internal successors, (56082), 28395 states have internal predecessors, (56082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:07,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28396 states to 28396 states and 56082 transitions. [2024-11-09 19:52:07,180 INFO L78 Accepts]: Start accepts. Automaton has 28396 states and 56082 transitions. Word has length 362 [2024-11-09 19:52:07,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:07,180 INFO L471 AbstractCegarLoop]: Abstraction has 28396 states and 56082 transitions. [2024-11-09 19:52:07,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:07,180 INFO L276 IsEmpty]: Start isEmpty. Operand 28396 states and 56082 transitions. [2024-11-09 19:52:07,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2024-11-09 19:52:07,194 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:07,194 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:07,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 19:52:07,195 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:07,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:07,195 INFO L85 PathProgramCache]: Analyzing trace with hash -489683983, now seen corresponding path program 1 times [2024-11-09 19:52:07,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:07,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097913032] [2024-11-09 19:52:07,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:07,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:07,622 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 535 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-11-09 19:52:07,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:07,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097913032] [2024-11-09 19:52:07,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097913032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:07,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:07,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:07,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293558000] [2024-11-09 19:52:07,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:07,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:07,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:07,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:07,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:07,626 INFO L87 Difference]: Start difference. First operand 28396 states and 56082 transitions. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:10,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:10,202 INFO L93 Difference]: Finished difference Result 70448 states and 139160 transitions. [2024-11-09 19:52:10,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:10,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 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 438 [2024-11-09 19:52:10,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:10,253 INFO L225 Difference]: With dead ends: 70448 [2024-11-09 19:52:10,253 INFO L226 Difference]: Without dead ends: 41186 [2024-11-09 19:52:10,277 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 [2024-11-09 19:52:10,278 INFO L432 NwaCegarLoop]: 974 mSDtfsCounter, 805 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1921 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 2225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 1921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:10,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 1013 Invalid, 2225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 1921 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-09 19:52:10,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41186 states. [2024-11-09 19:52:10,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41186 to 36486. [2024-11-09 19:52:10,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36486 states, 36485 states have (on average 1.962094011237495) internal successors, (71587), 36485 states have internal predecessors, (71587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:10,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36486 states to 36486 states and 71587 transitions. [2024-11-09 19:52:10,882 INFO L78 Accepts]: Start accepts. Automaton has 36486 states and 71587 transitions. Word has length 438 [2024-11-09 19:52:10,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:10,883 INFO L471 AbstractCegarLoop]: Abstraction has 36486 states and 71587 transitions. [2024-11-09 19:52:10,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:10,883 INFO L276 IsEmpty]: Start isEmpty. Operand 36486 states and 71587 transitions. [2024-11-09 19:52:10,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2024-11-09 19:52:10,893 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:10,893 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:10,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 19:52:10,893 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:10,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:10,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1251446963, now seen corresponding path program 1 times [2024-11-09 19:52:10,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:10,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629608041] [2024-11-09 19:52:10,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:10,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:11,851 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 615 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-09 19:52:11,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:11,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629608041] [2024-11-09 19:52:11,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629608041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:11,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:11,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:52:11,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881030944] [2024-11-09 19:52:11,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:11,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:52:11,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:11,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:52:11,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:52:11,855 INFO L87 Difference]: Start difference. First operand 36486 states and 71587 transitions. Second operand has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:15,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:15,466 INFO L93 Difference]: Finished difference Result 89231 states and 175310 transitions. [2024-11-09 19:52:15,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:52:15,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 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 442 [2024-11-09 19:52:15,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:15,526 INFO L225 Difference]: With dead ends: 89231 [2024-11-09 19:52:15,527 INFO L226 Difference]: Without dead ends: 52747 [2024-11-09 19:52:15,545 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 [2024-11-09 19:52:15,546 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 1542 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 3764 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 4248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 3764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:15,546 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1542 Valid, 202 Invalid, 4248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [484 Valid, 3764 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-09 19:52:15,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52747 states. [2024-11-09 19:52:16,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52747 to 47188. [2024-11-09 19:52:16,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47188 states, 47187 states have (on average 1.9693771589632738) internal successors, (92929), 47187 states have internal predecessors, (92929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:16,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47188 states to 47188 states and 92929 transitions. [2024-11-09 19:52:16,448 INFO L78 Accepts]: Start accepts. Automaton has 47188 states and 92929 transitions. Word has length 442 [2024-11-09 19:52:16,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:16,448 INFO L471 AbstractCegarLoop]: Abstraction has 47188 states and 92929 transitions. [2024-11-09 19:52:16,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:16,449 INFO L276 IsEmpty]: Start isEmpty. Operand 47188 states and 92929 transitions. [2024-11-09 19:52:16,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2024-11-09 19:52:16,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:16,463 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:16,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 19:52:16,464 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:16,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:16,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1262521074, now seen corresponding path program 1 times [2024-11-09 19:52:16,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:16,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219319640] [2024-11-09 19:52:16,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:16,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:16,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:17,132 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 574 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-11-09 19:52:17,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:17,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219319640] [2024-11-09 19:52:17,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219319640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:17,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:17,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:17,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254207015] [2024-11-09 19:52:17,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:17,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:17,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:17,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:17,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:17,135 INFO L87 Difference]: Start difference. First operand 47188 states and 92929 transitions. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:19,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:19,518 INFO L93 Difference]: Finished difference Result 113147 states and 223368 transitions. [2024-11-09 19:52:19,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:19,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 461 [2024-11-09 19:52:19,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:19,616 INFO L225 Difference]: With dead ends: 113147 [2024-11-09 19:52:19,616 INFO L226 Difference]: Without dead ends: 65961 [2024-11-09 19:52:19,644 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 [2024-11-09 19:52:19,645 INFO L432 NwaCegarLoop]: 274 mSDtfsCounter, 752 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1962 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 2171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:19,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 319 Invalid, 2171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1962 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-09 19:52:19,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65961 states. [2024-11-09 19:52:20,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65961 to 64665. [2024-11-09 19:52:20,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64665 states, 64664 states have (on average 1.9631479648645305) internal successors, (126945), 64664 states have internal predecessors, (126945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:20,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64665 states to 64665 states and 126945 transitions. [2024-11-09 19:52:20,939 INFO L78 Accepts]: Start accepts. Automaton has 64665 states and 126945 transitions. Word has length 461 [2024-11-09 19:52:20,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:20,939 INFO L471 AbstractCegarLoop]: Abstraction has 64665 states and 126945 transitions. [2024-11-09 19:52:20,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:20,940 INFO L276 IsEmpty]: Start isEmpty. Operand 64665 states and 126945 transitions. [2024-11-09 19:52:20,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2024-11-09 19:52:20,948 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:20,948 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:20,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 19:52:20,948 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:20,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:20,949 INFO L85 PathProgramCache]: Analyzing trace with hash 2126767117, now seen corresponding path program 1 times [2024-11-09 19:52:20,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:20,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236144961] [2024-11-09 19:52:20,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:20,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:21,708 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 552 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-11-09 19:52:21,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:21,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236144961] [2024-11-09 19:52:21,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236144961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:21,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:21,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:21,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735711829] [2024-11-09 19:52:21,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:21,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:21,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:21,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:21,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:21,712 INFO L87 Difference]: Start difference. First operand 64665 states and 126945 transitions. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:24,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:24,546 INFO L93 Difference]: Finished difference Result 142551 states and 279308 transitions. [2024-11-09 19:52:24,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:24,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 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 462 [2024-11-09 19:52:24,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:24,647 INFO L225 Difference]: With dead ends: 142551 [2024-11-09 19:52:24,648 INFO L226 Difference]: Without dead ends: 77462 [2024-11-09 19:52:24,666 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 [2024-11-09 19:52:24,666 INFO L432 NwaCegarLoop]: 1117 mSDtfsCounter, 727 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 2002 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 2162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 2002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:24,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 1171 Invalid, 2162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 2002 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 19:52:24,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77462 states. [2024-11-09 19:52:25,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77462 to 74885. [2024-11-09 19:52:25,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74885 states, 74884 states have (on average 1.9519523529725977) internal successors, (146170), 74884 states have internal predecessors, (146170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:26,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74885 states to 74885 states and 146170 transitions. [2024-11-09 19:52:26,036 INFO L78 Accepts]: Start accepts. Automaton has 74885 states and 146170 transitions. Word has length 462 [2024-11-09 19:52:26,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:26,036 INFO L471 AbstractCegarLoop]: Abstraction has 74885 states and 146170 transitions. [2024-11-09 19:52:26,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:26,036 INFO L276 IsEmpty]: Start isEmpty. Operand 74885 states and 146170 transitions. [2024-11-09 19:52:26,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2024-11-09 19:52:26,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:26,045 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:52:26,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 19:52:26,045 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:26,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:26,046 INFO L85 PathProgramCache]: Analyzing trace with hash -145657051, now seen corresponding path program 1 times [2024-11-09 19:52:26,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:26,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162558034] [2024-11-09 19:52:26,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:26,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:26,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:26,355 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 431 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-09 19:52:26,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:26,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162558034] [2024-11-09 19:52:26,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162558034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:26,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:26,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:26,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868567005] [2024-11-09 19:52:26,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:26,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:26,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:26,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:26,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:26,358 INFO L87 Difference]: Start difference. First operand 74885 states and 146170 transitions. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:29,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:29,330 INFO L93 Difference]: Finished difference Result 159159 states and 310880 transitions. [2024-11-09 19:52:29,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:29,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 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 480 [2024-11-09 19:52:29,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:29,456 INFO L225 Difference]: With dead ends: 159159 [2024-11-09 19:52:29,456 INFO L226 Difference]: Without dead ends: 84276 [2024-11-09 19:52:29,472 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 [2024-11-09 19:52:29,472 INFO L432 NwaCegarLoop]: 1069 mSDtfsCounter, 697 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1863 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 2050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:29,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 1124 Invalid, 2050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1863 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 19:52:29,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84276 states. [2024-11-09 19:52:30,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84276 to 75708. [2024-11-09 19:52:30,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75708 states, 75707 states have (on average 1.9414188912517998) internal successors, (146979), 75707 states have internal predecessors, (146979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:30,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75708 states to 75708 states and 146979 transitions. [2024-11-09 19:52:30,507 INFO L78 Accepts]: Start accepts. Automaton has 75708 states and 146979 transitions. Word has length 480 [2024-11-09 19:52:30,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:30,508 INFO L471 AbstractCegarLoop]: Abstraction has 75708 states and 146979 transitions. [2024-11-09 19:52:30,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:30,508 INFO L276 IsEmpty]: Start isEmpty. Operand 75708 states and 146979 transitions. [2024-11-09 19:52:30,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2024-11-09 19:52:30,516 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:30,516 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:52:30,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 19:52:30,517 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:30,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:30,517 INFO L85 PathProgramCache]: Analyzing trace with hash 67944956, now seen corresponding path program 1 times [2024-11-09 19:52:30,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:30,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117393157] [2024-11-09 19:52:30,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:30,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:31,223 INFO L134 CoverageAnalysis]: Checked inductivity of 655 backedges. 423 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-09 19:52:31,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:31,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117393157] [2024-11-09 19:52:31,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117393157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:31,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:31,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:31,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785167614] [2024-11-09 19:52:31,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:31,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:31,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:31,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:31,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:31,226 INFO L87 Difference]: Start difference. First operand 75708 states and 146979 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:33,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:33,973 INFO L93 Difference]: Finished difference Result 166785 states and 323617 transitions. [2024-11-09 19:52:33,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:33,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 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 485 [2024-11-09 19:52:33,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:34,102 INFO L225 Difference]: With dead ends: 166785 [2024-11-09 19:52:34,103 INFO L226 Difference]: Without dead ends: 91079 [2024-11-09 19:52:34,148 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 [2024-11-09 19:52:34,148 INFO L432 NwaCegarLoop]: 1118 mSDtfsCounter, 648 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 2022 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 2132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 2022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:34,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [648 Valid, 1175 Invalid, 2132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 2022 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 19:52:34,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91079 states. [2024-11-09 19:52:35,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91079 to 90204. [2024-11-09 19:52:35,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90204 states, 90203 states have (on average 1.9333059876057337) internal successors, (174390), 90203 states have internal predecessors, (174390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:35,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90204 states to 90204 states and 174390 transitions. [2024-11-09 19:52:35,974 INFO L78 Accepts]: Start accepts. Automaton has 90204 states and 174390 transitions. Word has length 485 [2024-11-09 19:52:35,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:35,975 INFO L471 AbstractCegarLoop]: Abstraction has 90204 states and 174390 transitions. [2024-11-09 19:52:35,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:35,975 INFO L276 IsEmpty]: Start isEmpty. Operand 90204 states and 174390 transitions. [2024-11-09 19:52:35,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2024-11-09 19:52:35,985 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:35,986 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:52:35,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 19:52:35,986 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:35,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:35,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1324194294, now seen corresponding path program 1 times [2024-11-09 19:52:35,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:35,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026496778] [2024-11-09 19:52:35,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:35,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:36,291 INFO L134 CoverageAnalysis]: Checked inductivity of 678 backedges. 560 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-11-09 19:52:36,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:36,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026496778] [2024-11-09 19:52:36,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026496778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:36,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:36,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:36,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731855283] [2024-11-09 19:52:36,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:36,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:36,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:36,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:36,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:36,294 INFO L87 Difference]: Start difference. First operand 90204 states and 174390 transitions. Second operand has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)