./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem17_label02.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 adb370abe9a266817aee227dfaf2ff5e2cfdcfe49f97cfc66a125d7a6f5fbb19 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 04:15:55,562 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 04:15:55,613 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 04:15:55,616 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 04:15:55,618 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 04:15:55,641 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 04:15:55,642 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 04:15:55,642 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 04:15:55,643 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 04:15:55,644 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 04:15:55,644 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 04:15:55,645 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 04:15:55,645 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 04:15:55,646 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 04:15:55,647 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 04:15:55,647 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 04:15:55,647 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 04:15:55,647 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 04:15:55,647 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 04:15:55,648 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 04:15:55,648 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 04:15:55,650 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 04:15:55,651 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 04:15:55,651 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 04:15:55,651 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 04:15:55,651 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 04:15:55,651 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 04:15:55,651 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 04:15:55,652 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 04:15:55,652 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 04:15:55,652 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 04:15:55,652 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 04:15:55,652 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:15:55,653 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 04:15:55,653 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 04:15:55,653 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 04:15:55,653 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 04:15:55,653 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 04:15:55,653 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 04:15:55,653 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 04:15:55,654 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 04:15:55,654 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 04:15:55,654 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adb370abe9a266817aee227dfaf2ff5e2cfdcfe49f97cfc66a125d7a6f5fbb19 [2024-11-16 04:15:55,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 04:15:55,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 04:15:55,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 04:15:55,868 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 04:15:55,868 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 04:15:55,869 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label02.c [2024-11-16 04:15:57,043 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 04:15:57,327 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 04:15:57,328 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label02.c [2024-11-16 04:15:57,347 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f10f068ab/1e592f6b72b145508f56d7ce0a65047e/FLAG3ca288f53 [2024-11-16 04:15:57,360 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f10f068ab/1e592f6b72b145508f56d7ce0a65047e [2024-11-16 04:15:57,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 04:15:57,364 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 04:15:57,366 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 04:15:57,367 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 04:15:57,370 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 04:15:57,371 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:15:57" (1/1) ... [2024-11-16 04:15:57,372 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64172be3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:15:57, skipping insertion in model container [2024-11-16 04:15:57,372 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:15:57" (1/1) ... [2024-11-16 04:15:57,476 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 04:15:57,678 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_label02.c[7859,7872] [2024-11-16 04:15:58,055 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:15:58,063 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 04:15:58,088 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_label02.c[7859,7872] [2024-11-16 04:15:58,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:15:58,283 INFO L204 MainTranslator]: Completed translation [2024-11-16 04:15:58,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:15:58 WrapperNode [2024-11-16 04:15:58,283 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 04:15:58,284 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 04:15:58,284 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 04:15:58,284 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 04:15:58,290 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:15:58" (1/1) ... [2024-11-16 04:15:58,330 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:15:58" (1/1) ... [2024-11-16 04:15:58,588 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2612 [2024-11-16 04:15:58,589 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 04:15:58,589 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 04:15:58,589 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 04:15:58,589 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 04:15:58,597 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:15:58" (1/1) ... [2024-11-16 04:15:58,597 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:15:58" (1/1) ... [2024-11-16 04:15:58,680 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:15:58" (1/1) ... [2024-11-16 04:15:58,761 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 04:15:58,761 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:15:58" (1/1) ... [2024-11-16 04:15:58,761 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:15:58" (1/1) ... [2024-11-16 04:15:58,842 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:15:58" (1/1) ... [2024-11-16 04:15:58,855 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:15:58" (1/1) ... [2024-11-16 04:15:58,875 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:15:58" (1/1) ... [2024-11-16 04:15:58,886 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:15:58" (1/1) ... [2024-11-16 04:15:58,920 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 04:15:58,921 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 04:15:58,922 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 04:15:58,922 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 04:15:58,923 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:15:58" (1/1) ... [2024-11-16 04:15:58,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:15:58,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:15:58,953 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 04:15:58,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 04:15:58,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 04:15:58,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 04:15:58,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 04:15:58,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 04:15:59,048 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 04:15:59,050 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 04:16:01,355 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1653: havoc calculate_output_#t~ret7#1; [2024-11-16 04:16:01,438 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-16 04:16:01,439 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 04:16:01,465 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 04:16:01,466 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 04:16:01,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:16:01 BoogieIcfgContainer [2024-11-16 04:16:01,466 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 04:16:01,467 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 04:16:01,467 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 04:16:01,470 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 04:16:01,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:15:57" (1/3) ... [2024-11-16 04:16:01,470 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@299e6ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:16:01, skipping insertion in model container [2024-11-16 04:16:01,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:15:58" (2/3) ... [2024-11-16 04:16:01,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@299e6ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:16:01, skipping insertion in model container [2024-11-16 04:16:01,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:16:01" (3/3) ... [2024-11-16 04:16:01,472 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label02.c [2024-11-16 04:16:01,483 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 04:16:01,484 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 04:16:01,547 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 04:16:01,553 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;@386cf035, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 04:16:01,553 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 04:16:01,561 INFO L276 IsEmpty]: Start isEmpty. Operand has 593 states, 591 states have (on average 1.8020304568527918) internal successors, (1065), 592 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:01,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-16 04:16:01,570 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:01,570 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:16:01,571 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:01,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:01,575 INFO L85 PathProgramCache]: Analyzing trace with hash 308949546, now seen corresponding path program 1 times [2024-11-16 04:16:01,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:01,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112877353] [2024-11-16 04:16:01,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:01,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:01,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:16:01,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:01,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112877353] [2024-11-16 04:16:01,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112877353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:01,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:01,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:16:01,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466760407] [2024-11-16 04:16:01,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:01,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:01,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:01,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:01,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:01,909 INFO L87 Difference]: Start difference. First operand has 593 states, 591 states have (on average 1.8020304568527918) internal successors, (1065), 592 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:03,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:03,855 INFO L93 Difference]: Finished difference Result 1650 states and 3035 transitions. [2024-11-16 04:16:03,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:03,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-16 04:16:03,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:03,871 INFO L225 Difference]: With dead ends: 1650 [2024-11-16 04:16:03,872 INFO L226 Difference]: Without dead ends: 980 [2024-11-16 04:16:03,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:03,877 INFO L432 NwaCegarLoop]: 427 mSDtfsCounter, 435 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:03,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 507 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-16 04:16:03,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2024-11-16 04:16:03,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 974. [2024-11-16 04:16:03,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 973 states have (on average 1.551901336073998) internal successors, (1510), 973 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:03,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1510 transitions. [2024-11-16 04:16:03,942 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1510 transitions. Word has length 55 [2024-11-16 04:16:03,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:03,945 INFO L471 AbstractCegarLoop]: Abstraction has 974 states and 1510 transitions. [2024-11-16 04:16:03,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:03,946 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1510 transitions. [2024-11-16 04:16:03,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-16 04:16:03,948 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:03,949 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:16:03,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 04:16:03,949 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:03,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:03,950 INFO L85 PathProgramCache]: Analyzing trace with hash 480870302, now seen corresponding path program 1 times [2024-11-16 04:16:03,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:03,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810022255] [2024-11-16 04:16:03,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:03,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:04,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:04,139 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:16:04,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:04,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810022255] [2024-11-16 04:16:04,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810022255] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:04,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:04,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:16:04,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452816549] [2024-11-16 04:16:04,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:04,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:04,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:04,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:04,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:04,143 INFO L87 Difference]: Start difference. First operand 974 states and 1510 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:05,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:05,984 INFO L93 Difference]: Finished difference Result 2821 states and 4389 transitions. [2024-11-16 04:16:05,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:05,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2024-11-16 04:16:05,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:05,990 INFO L225 Difference]: With dead ends: 2821 [2024-11-16 04:16:05,990 INFO L226 Difference]: Without dead ends: 1849 [2024-11-16 04:16:05,993 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:05,994 INFO L432 NwaCegarLoop]: 509 mSDtfsCounter, 405 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:05,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 584 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-16 04:16:05,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2024-11-16 04:16:06,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1846. [2024-11-16 04:16:06,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1846 states, 1845 states have (on average 1.3490514905149051) internal successors, (2489), 1845 states have internal predecessors, (2489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:06,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1846 states to 1846 states and 2489 transitions. [2024-11-16 04:16:06,031 INFO L78 Accepts]: Start accepts. Automaton has 1846 states and 2489 transitions. Word has length 123 [2024-11-16 04:16:06,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:06,032 INFO L471 AbstractCegarLoop]: Abstraction has 1846 states and 2489 transitions. [2024-11-16 04:16:06,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:06,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1846 states and 2489 transitions. [2024-11-16 04:16:06,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-16 04:16:06,038 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:06,038 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:16:06,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 04:16:06,039 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:06,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:06,039 INFO L85 PathProgramCache]: Analyzing trace with hash 679419660, now seen corresponding path program 1 times [2024-11-16 04:16:06,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:06,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303792471] [2024-11-16 04:16:06,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:06,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:06,337 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:16:06,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:06,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303792471] [2024-11-16 04:16:06,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303792471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:06,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:06,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:16:06,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241286837] [2024-11-16 04:16:06,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:06,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:16:06,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:06,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:16:06,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:16:06,341 INFO L87 Difference]: Start difference. First operand 1846 states and 2489 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:09,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:09,028 INFO L93 Difference]: Finished difference Result 6782 states and 9275 transitions. [2024-11-16 04:16:09,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:16:09,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2024-11-16 04:16:09,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:09,041 INFO L225 Difference]: With dead ends: 6782 [2024-11-16 04:16:09,042 INFO L226 Difference]: Without dead ends: 4938 [2024-11-16 04:16:09,044 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 [2024-11-16 04:16:09,047 INFO L432 NwaCegarLoop]: 204 mSDtfsCounter, 913 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 2514 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 3289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:09,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 292 Invalid, 3289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2514 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-16 04:16:09,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4938 states. [2024-11-16 04:16:09,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4938 to 4887. [2024-11-16 04:16:09,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4887 states, 4886 states have (on average 1.2857142857142858) internal successors, (6282), 4886 states have internal predecessors, (6282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:09,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4887 states to 4887 states and 6282 transitions. [2024-11-16 04:16:09,103 INFO L78 Accepts]: Start accepts. Automaton has 4887 states and 6282 transitions. Word has length 126 [2024-11-16 04:16:09,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:09,105 INFO L471 AbstractCegarLoop]: Abstraction has 4887 states and 6282 transitions. [2024-11-16 04:16:09,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:09,105 INFO L276 IsEmpty]: Start isEmpty. Operand 4887 states and 6282 transitions. [2024-11-16 04:16:09,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-16 04:16:09,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:09,110 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-16 04:16:09,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 04:16:09,110 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:09,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:09,111 INFO L85 PathProgramCache]: Analyzing trace with hash 74386570, now seen corresponding path program 1 times [2024-11-16 04:16:09,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:09,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126350939] [2024-11-16 04:16:09,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:09,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:09,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:09,322 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-16 04:16:09,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:09,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126350939] [2024-11-16 04:16:09,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126350939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:09,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:09,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:16:09,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586327577] [2024-11-16 04:16:09,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:09,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:09,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:09,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:09,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:09,326 INFO L87 Difference]: Start difference. First operand 4887 states and 6282 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:10,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:10,635 INFO L93 Difference]: Finished difference Result 14471 states and 18576 transitions. [2024-11-16 04:16:10,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:10,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 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 198 [2024-11-16 04:16:10,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:10,652 INFO L225 Difference]: With dead ends: 14471 [2024-11-16 04:16:10,653 INFO L226 Difference]: Without dead ends: 8297 [2024-11-16 04:16:10,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:10,659 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 387 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:10,659 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 592 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-16 04:16:10,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8297 states. [2024-11-16 04:16:10,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8297 to 6162. [2024-11-16 04:16:10,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6162 states, 6161 states have (on average 1.190228858951469) internal successors, (7333), 6161 states have internal predecessors, (7333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:10,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6162 states to 6162 states and 7333 transitions. [2024-11-16 04:16:10,732 INFO L78 Accepts]: Start accepts. Automaton has 6162 states and 7333 transitions. Word has length 198 [2024-11-16 04:16:10,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:10,732 INFO L471 AbstractCegarLoop]: Abstraction has 6162 states and 7333 transitions. [2024-11-16 04:16:10,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:10,733 INFO L276 IsEmpty]: Start isEmpty. Operand 6162 states and 7333 transitions. [2024-11-16 04:16:10,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-11-16 04:16:10,734 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:10,735 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:16:10,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 04:16:10,735 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:10,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:10,735 INFO L85 PathProgramCache]: Analyzing trace with hash 537597990, now seen corresponding path program 1 times [2024-11-16 04:16:10,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:10,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108803516] [2024-11-16 04:16:10,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:10,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:10,881 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-16 04:16:10,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:10,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108803516] [2024-11-16 04:16:10,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108803516] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:10,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:10,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:16:10,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689114424] [2024-11-16 04:16:10,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:10,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:10,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:10,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:10,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:10,885 INFO L87 Difference]: Start difference. First operand 6162 states and 7333 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:12,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:12,243 INFO L93 Difference]: Finished difference Result 15730 states and 18935 transitions. [2024-11-16 04:16:12,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:12,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 211 [2024-11-16 04:16:12,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:12,260 INFO L225 Difference]: With dead ends: 15730 [2024-11-16 04:16:12,261 INFO L226 Difference]: Without dead ends: 9570 [2024-11-16 04:16:12,264 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:12,265 INFO L432 NwaCegarLoop]: 415 mSDtfsCounter, 407 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 1592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:12,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 481 Invalid, 1592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-16 04:16:12,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9570 states. [2024-11-16 04:16:12,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9570 to 6139. [2024-11-16 04:16:12,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6139 states, 6138 states have (on average 1.1889866405995437) internal successors, (7298), 6138 states have internal predecessors, (7298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:12,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6139 states to 6139 states and 7298 transitions. [2024-11-16 04:16:12,342 INFO L78 Accepts]: Start accepts. Automaton has 6139 states and 7298 transitions. Word has length 211 [2024-11-16 04:16:12,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:12,345 INFO L471 AbstractCegarLoop]: Abstraction has 6139 states and 7298 transitions. [2024-11-16 04:16:12,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:12,345 INFO L276 IsEmpty]: Start isEmpty. Operand 6139 states and 7298 transitions. [2024-11-16 04:16:12,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-16 04:16:12,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:12,347 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2024-11-16 04:16:12,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 04:16:12,348 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:12,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:12,349 INFO L85 PathProgramCache]: Analyzing trace with hash -146694016, now seen corresponding path program 1 times [2024-11-16 04:16:12,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:12,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076217062] [2024-11-16 04:16:12,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:12,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:12,504 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:16:12,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:12,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076217062] [2024-11-16 04:16:12,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076217062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:12,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:12,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:16:12,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498492061] [2024-11-16 04:16:12,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:12,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:12,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:12,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:12,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:12,507 INFO L87 Difference]: Start difference. First operand 6139 states and 7298 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:13,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:13,805 INFO L93 Difference]: Finished difference Result 16117 states and 19483 transitions. [2024-11-16 04:16:13,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:13,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 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 218 [2024-11-16 04:16:13,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:13,826 INFO L225 Difference]: With dead ends: 16117 [2024-11-16 04:16:13,826 INFO L226 Difference]: Without dead ends: 9980 [2024-11-16 04:16:13,832 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:13,833 INFO L432 NwaCegarLoop]: 737 mSDtfsCounter, 487 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:13,833 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 793 Invalid, 1544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-16 04:16:13,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9980 states. [2024-11-16 04:16:13,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9980 to 9980. [2024-11-16 04:16:13,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9980 states, 9979 states have (on average 1.1712596452550357) internal successors, (11688), 9979 states have internal predecessors, (11688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:13,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9980 states to 9980 states and 11688 transitions. [2024-11-16 04:16:13,940 INFO L78 Accepts]: Start accepts. Automaton has 9980 states and 11688 transitions. Word has length 218 [2024-11-16 04:16:13,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:13,940 INFO L471 AbstractCegarLoop]: Abstraction has 9980 states and 11688 transitions. [2024-11-16 04:16:13,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:13,941 INFO L276 IsEmpty]: Start isEmpty. Operand 9980 states and 11688 transitions. [2024-11-16 04:16:13,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2024-11-16 04:16:13,943 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:13,943 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-16 04:16:13,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 04:16:13,944 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:13,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:13,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1674271344, now seen corresponding path program 1 times [2024-11-16 04:16:13,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:13,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168674072] [2024-11-16 04:16:13,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:13,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:14,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:14,375 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 244 proven. 71 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-16 04:16:14,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:14,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168674072] [2024-11-16 04:16:14,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168674072] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:16:14,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845058807] [2024-11-16 04:16:14,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:14,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:16:14,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:16:14,377 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 04:16:14,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 04:16:14,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:14,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 04:16:14,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:16:14,669 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 244 proven. 71 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-16 04:16:14,670 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 04:16:14,899 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 315 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-16 04:16:14,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845058807] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 04:16:14,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 04:16:14,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-16 04:16:14,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757699310] [2024-11-16 04:16:14,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:14,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:16:14,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:14,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:16:14,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-16 04:16:14,900 INFO L87 Difference]: Start difference. First operand 9980 states and 11688 transitions. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:17,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:17,175 INFO L93 Difference]: Finished difference Result 30648 states and 36240 transitions. [2024-11-16 04:16:17,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:16:17,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 282 [2024-11-16 04:16:17,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:17,198 INFO L225 Difference]: With dead ends: 30648 [2024-11-16 04:16:17,199 INFO L226 Difference]: Without dead ends: 19810 [2024-11-16 04:16:17,206 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 561 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-16 04:16:17,206 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 890 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 734 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 3000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 734 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:17,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 166 Invalid, 3000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [734 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-16 04:16:17,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19810 states. [2024-11-16 04:16:17,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19810 to 19807. [2024-11-16 04:16:17,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19807 states, 19806 states have (on average 1.1595981015853782) internal successors, (22967), 19806 states have internal predecessors, (22967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:17,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19807 states to 19807 states and 22967 transitions. [2024-11-16 04:16:17,379 INFO L78 Accepts]: Start accepts. Automaton has 19807 states and 22967 transitions. Word has length 282 [2024-11-16 04:16:17,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:17,379 INFO L471 AbstractCegarLoop]: Abstraction has 19807 states and 22967 transitions. [2024-11-16 04:16:17,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:17,381 INFO L276 IsEmpty]: Start isEmpty. Operand 19807 states and 22967 transitions. [2024-11-16 04:16:17,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-11-16 04:16:17,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:17,384 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:16:17,404 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 04:16:17,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:16:17,585 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:17,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:17,585 INFO L85 PathProgramCache]: Analyzing trace with hash 982996652, now seen corresponding path program 1 times [2024-11-16 04:16:17,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:17,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718595409] [2024-11-16 04:16:17,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:17,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:17,719 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-16 04:16:17,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:17,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718595409] [2024-11-16 04:16:17,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718595409] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:17,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:17,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:16:17,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701007192] [2024-11-16 04:16:17,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:17,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:17,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:17,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:17,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:17,722 INFO L87 Difference]: Start difference. First operand 19807 states and 22967 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:19,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:19,113 INFO L93 Difference]: Finished difference Result 43011 states and 50091 transitions. [2024-11-16 04:16:19,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:19,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 295 [2024-11-16 04:16:19,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:19,139 INFO L225 Difference]: With dead ends: 43011 [2024-11-16 04:16:19,139 INFO L226 Difference]: Without dead ends: 23206 [2024-11-16 04:16:19,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:19,156 INFO L432 NwaCegarLoop]: 829 mSDtfsCounter, 375 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:19,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 900 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-16 04:16:19,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23206 states. [2024-11-16 04:16:19,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23206 to 22779. [2024-11-16 04:16:19,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22779 states, 22778 states have (on average 1.145271753446308) internal successors, (26087), 22778 states have internal predecessors, (26087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:19,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22779 states to 22779 states and 26087 transitions. [2024-11-16 04:16:19,404 INFO L78 Accepts]: Start accepts. Automaton has 22779 states and 26087 transitions. Word has length 295 [2024-11-16 04:16:19,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:19,405 INFO L471 AbstractCegarLoop]: Abstraction has 22779 states and 26087 transitions. [2024-11-16 04:16:19,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:19,405 INFO L276 IsEmpty]: Start isEmpty. Operand 22779 states and 26087 transitions. [2024-11-16 04:16:19,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2024-11-16 04:16:19,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:19,409 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:16:19,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 04:16:19,409 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:19,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:19,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1034855719, now seen corresponding path program 1 times [2024-11-16 04:16:19,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:19,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736166301] [2024-11-16 04:16:19,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:19,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:19,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:19,682 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-16 04:16:19,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:19,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736166301] [2024-11-16 04:16:19,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736166301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:19,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:19,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 04:16:19,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641368475] [2024-11-16 04:16:19,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:19,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:16:19,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:19,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:16:19,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:16:19,686 INFO L87 Difference]: Start difference. First operand 22779 states and 26087 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:22,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:22,191 INFO L93 Difference]: Finished difference Result 64389 states and 73806 transitions. [2024-11-16 04:16:22,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:16:22,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 318 [2024-11-16 04:16:22,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:22,234 INFO L225 Difference]: With dead ends: 64389 [2024-11-16 04:16:22,235 INFO L226 Difference]: Without dead ends: 38191 [2024-11-16 04:16:22,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:16:22,257 INFO L432 NwaCegarLoop]: 253 mSDtfsCounter, 854 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2908 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 3377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 2908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:22,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 378 Invalid, 3377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [469 Valid, 2908 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-16 04:16:22,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38191 states. [2024-11-16 04:16:22,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38191 to 37292. [2024-11-16 04:16:22,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37292 states, 37291 states have (on average 1.1371376471534687) internal successors, (42405), 37291 states have internal predecessors, (42405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:22,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37292 states to 37292 states and 42405 transitions. [2024-11-16 04:16:22,594 INFO L78 Accepts]: Start accepts. Automaton has 37292 states and 42405 transitions. Word has length 318 [2024-11-16 04:16:22,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:22,595 INFO L471 AbstractCegarLoop]: Abstraction has 37292 states and 42405 transitions. [2024-11-16 04:16:22,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:22,595 INFO L276 IsEmpty]: Start isEmpty. Operand 37292 states and 42405 transitions. [2024-11-16 04:16:22,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2024-11-16 04:16:22,600 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:22,600 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:16:22,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 04:16:22,600 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:22,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:22,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1101732050, now seen corresponding path program 1 times [2024-11-16 04:16:22,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:22,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53462712] [2024-11-16 04:16:22,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:22,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:22,886 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 331 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-16 04:16:22,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:22,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53462712] [2024-11-16 04:16:22,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53462712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:22,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:22,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:16:22,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930655487] [2024-11-16 04:16:22,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:22,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:22,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:22,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:22,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:22,888 INFO L87 Difference]: Start difference. First operand 37292 states and 42405 transitions. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:24,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:24,298 INFO L93 Difference]: Finished difference Result 90396 states and 102960 transitions. [2024-11-16 04:16:24,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:24,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 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 333 [2024-11-16 04:16:24,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:24,350 INFO L225 Difference]: With dead ends: 90396 [2024-11-16 04:16:24,350 INFO L226 Difference]: Without dead ends: 51400 [2024-11-16 04:16:24,377 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:24,378 INFO L432 NwaCegarLoop]: 756 mSDtfsCounter, 364 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:24,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 830 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-16 04:16:24,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51400 states. [2024-11-16 04:16:24,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51400 to 50109. [2024-11-16 04:16:24,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50109 states, 50108 states have (on average 1.1121976530693702) internal successors, (55730), 50108 states have internal predecessors, (55730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:24,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50109 states to 50109 states and 55730 transitions. [2024-11-16 04:16:24,904 INFO L78 Accepts]: Start accepts. Automaton has 50109 states and 55730 transitions. Word has length 333 [2024-11-16 04:16:24,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:24,905 INFO L471 AbstractCegarLoop]: Abstraction has 50109 states and 55730 transitions. [2024-11-16 04:16:24,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:24,905 INFO L276 IsEmpty]: Start isEmpty. Operand 50109 states and 55730 transitions. [2024-11-16 04:16:24,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2024-11-16 04:16:24,909 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:24,910 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:16:24,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 04:16:24,910 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:24,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:24,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1259622496, now seen corresponding path program 1 times [2024-11-16 04:16:24,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:24,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814328331] [2024-11-16 04:16:24,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:24,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:25,176 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 367 proven. 217 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-16 04:16:25,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:25,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814328331] [2024-11-16 04:16:25,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814328331] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:16:25,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49634656] [2024-11-16 04:16:25,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:25,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:16:25,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:16:25,179 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 04:16:25,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 04:16:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:25,286 INFO L255 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 04:16:25,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:16:25,436 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 387 proven. 74 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-11-16 04:16:25,439 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 04:16:25,630 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 461 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-11-16 04:16:25,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49634656] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 04:16:25,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 04:16:25,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 6 [2024-11-16 04:16:25,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732313517] [2024-11-16 04:16:25,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:25,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:16:25,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:25,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:16:25,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-16 04:16:25,632 INFO L87 Difference]: Start difference. First operand 50109 states and 55730 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:27,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:27,911 INFO L93 Difference]: Finished difference Result 119008 states and 132598 transitions. [2024-11-16 04:16:27,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:16:27,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 357 [2024-11-16 04:16:27,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:27,976 INFO L225 Difference]: With dead ends: 119008 [2024-11-16 04:16:27,976 INFO L226 Difference]: Without dead ends: 68901 [2024-11-16 04:16:28,008 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 716 GetRequests, 711 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-16 04:16:28,009 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 924 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 2317 mSolverCounterSat, 673 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 2990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 673 IncrementalHoareTripleChecker+Valid, 2317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:28,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 187 Invalid, 2990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [673 Valid, 2317 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-16 04:16:28,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68901 states. [2024-11-16 04:16:28,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68901 to 65061. [2024-11-16 04:16:28,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65061 states, 65060 states have (on average 1.1167845066092836) internal successors, (72658), 65060 states have internal predecessors, (72658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:28,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65061 states to 65061 states and 72658 transitions. [2024-11-16 04:16:28,690 INFO L78 Accepts]: Start accepts. Automaton has 65061 states and 72658 transitions. Word has length 357 [2024-11-16 04:16:28,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:28,690 INFO L471 AbstractCegarLoop]: Abstraction has 65061 states and 72658 transitions. [2024-11-16 04:16:28,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:28,691 INFO L276 IsEmpty]: Start isEmpty. Operand 65061 states and 72658 transitions. [2024-11-16 04:16:28,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2024-11-16 04:16:28,695 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:28,695 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-16 04:16:28,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 04:16:28,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-16 04:16:28,900 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:28,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:28,901 INFO L85 PathProgramCache]: Analyzing trace with hash -121195447, now seen corresponding path program 1 times [2024-11-16 04:16:28,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:28,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534498704] [2024-11-16 04:16:28,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:28,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:28,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:29,062 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-16 04:16:29,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:29,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534498704] [2024-11-16 04:16:29,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534498704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:29,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:29,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:16:29,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189014389] [2024-11-16 04:16:29,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:29,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:29,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:29,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:29,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:29,064 INFO L87 Difference]: Start difference. First operand 65061 states and 72658 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:30,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:30,804 INFO L93 Difference]: Finished difference Result 142510 states and 159349 transitions. [2024-11-16 04:16:30,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:30,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 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 370 [2024-11-16 04:16:30,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:30,885 INFO L225 Difference]: With dead ends: 142510 [2024-11-16 04:16:30,885 INFO L226 Difference]: Without dead ends: 77014 [2024-11-16 04:16:30,923 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:30,924 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 470 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:30,924 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 305 Invalid, 1548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 04:16:30,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77014 states. [2024-11-16 04:16:31,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77014 to 73592. [2024-11-16 04:16:31,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73592 states, 73591 states have (on average 1.1118615048035765) internal successors, (81823), 73591 states have internal predecessors, (81823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:31,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73592 states to 73592 states and 81823 transitions. [2024-11-16 04:16:31,732 INFO L78 Accepts]: Start accepts. Automaton has 73592 states and 81823 transitions. Word has length 370 [2024-11-16 04:16:31,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:31,732 INFO L471 AbstractCegarLoop]: Abstraction has 73592 states and 81823 transitions. [2024-11-16 04:16:31,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:31,732 INFO L276 IsEmpty]: Start isEmpty. Operand 73592 states and 81823 transitions. [2024-11-16 04:16:31,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2024-11-16 04:16:31,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:31,737 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:16:31,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 04:16:31,737 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:31,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:31,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1752913964, now seen corresponding path program 1 times [2024-11-16 04:16:31,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:31,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704239014] [2024-11-16 04:16:31,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:31,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:32,207 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 421 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-16 04:16:32,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:32,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704239014] [2024-11-16 04:16:32,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704239014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:32,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:32,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:16:32,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276367836] [2024-11-16 04:16:32,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:32,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:32,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:32,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:32,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:32,210 INFO L87 Difference]: Start difference. First operand 73592 states and 81823 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:33,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:33,691 INFO L93 Difference]: Finished difference Result 163387 states and 181912 transitions. [2024-11-16 04:16:33,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:33,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 387 [2024-11-16 04:16:33,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:33,918 INFO L225 Difference]: With dead ends: 163387 [2024-11-16 04:16:33,918 INFO L226 Difference]: Without dead ends: 88517 [2024-11-16 04:16:33,942 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:33,944 INFO L432 NwaCegarLoop]: 765 mSDtfsCounter, 389 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:33,945 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 823 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 04:16:33,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88517 states. [2024-11-16 04:16:34,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88517 to 73130. [2024-11-16 04:16:34,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73130 states, 73129 states have (on average 1.1106947996007055) internal successors, (81224), 73129 states have internal predecessors, (81224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:34,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73130 states to 73130 states and 81224 transitions. [2024-11-16 04:16:34,813 INFO L78 Accepts]: Start accepts. Automaton has 73130 states and 81224 transitions. Word has length 387 [2024-11-16 04:16:34,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:34,814 INFO L471 AbstractCegarLoop]: Abstraction has 73130 states and 81224 transitions. [2024-11-16 04:16:34,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:34,814 INFO L276 IsEmpty]: Start isEmpty. Operand 73130 states and 81224 transitions. [2024-11-16 04:16:34,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-11-16 04:16:34,820 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:34,821 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-16 04:16:34,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 04:16:34,821 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:34,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:34,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1273727091, now seen corresponding path program 1 times [2024-11-16 04:16:34,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:34,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023638147] [2024-11-16 04:16:34,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:34,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:35,199 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 569 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-16 04:16:35,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:35,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023638147] [2024-11-16 04:16:35,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023638147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:35,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:35,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:16:35,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326876333] [2024-11-16 04:16:35,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:35,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:35,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:35,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:35,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:35,203 INFO L87 Difference]: Start difference. First operand 73130 states and 81224 transitions. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:36,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:36,662 INFO L93 Difference]: Finished difference Result 166747 states and 185466 transitions. [2024-11-16 04:16:36,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:36,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 405 [2024-11-16 04:16:36,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:36,752 INFO L225 Difference]: With dead ends: 166747 [2024-11-16 04:16:36,752 INFO L226 Difference]: Without dead ends: 93188 [2024-11-16 04:16:36,794 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:36,795 INFO L432 NwaCegarLoop]: 309 mSDtfsCounter, 409 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:36,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 366 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 1253 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-16 04:16:36,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93188 states. [2024-11-16 04:16:37,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93188 to 88479. [2024-11-16 04:16:37,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88479 states, 88478 states have (on average 1.104681389723999) internal successors, (97740), 88478 states have internal predecessors, (97740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:37,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88479 states to 88479 states and 97740 transitions. [2024-11-16 04:16:37,910 INFO L78 Accepts]: Start accepts. Automaton has 88479 states and 97740 transitions. Word has length 405 [2024-11-16 04:16:37,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:37,910 INFO L471 AbstractCegarLoop]: Abstraction has 88479 states and 97740 transitions. [2024-11-16 04:16:37,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:37,910 INFO L276 IsEmpty]: Start isEmpty. Operand 88479 states and 97740 transitions. [2024-11-16 04:16:37,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2024-11-16 04:16:37,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:37,917 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:16:37,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 04:16:37,917 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:37,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:37,918 INFO L85 PathProgramCache]: Analyzing trace with hash -667542679, now seen corresponding path program 1 times [2024-11-16 04:16:37,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:37,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490211665] [2024-11-16 04:16:37,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:37,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:38,252 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 454 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-16 04:16:38,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:38,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490211665] [2024-11-16 04:16:38,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490211665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:38,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:38,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:16:38,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470481759] [2024-11-16 04:16:38,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:38,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:38,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:38,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:38,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:38,255 INFO L87 Difference]: Start difference. First operand 88479 states and 97740 transitions. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:39,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:39,705 INFO L93 Difference]: Finished difference Result 185481 states and 204446 transitions. [2024-11-16 04:16:39,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:39,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 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 409 [2024-11-16 04:16:39,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:39,800 INFO L225 Difference]: With dead ends: 185481 [2024-11-16 04:16:39,800 INFO L226 Difference]: Without dead ends: 97003 [2024-11-16 04:16:39,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:39,844 INFO L432 NwaCegarLoop]: 272 mSDtfsCounter, 388 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:39,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 319 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-16 04:16:39,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97003 states. [2024-11-16 04:16:40,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97003 to 91885. [2024-11-16 04:16:40,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91885 states, 91884 states have (on average 1.100670410517609) internal successors, (101134), 91884 states have internal predecessors, (101134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:40,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91885 states to 91885 states and 101134 transitions. [2024-11-16 04:16:40,946 INFO L78 Accepts]: Start accepts. Automaton has 91885 states and 101134 transitions. Word has length 409 [2024-11-16 04:16:40,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:40,946 INFO L471 AbstractCegarLoop]: Abstraction has 91885 states and 101134 transitions. [2024-11-16 04:16:40,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:40,946 INFO L276 IsEmpty]: Start isEmpty. Operand 91885 states and 101134 transitions. [2024-11-16 04:16:40,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2024-11-16 04:16:40,955 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:40,955 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:16:40,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 04:16:40,955 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:40,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:40,956 INFO L85 PathProgramCache]: Analyzing trace with hash -981267860, now seen corresponding path program 1 times [2024-11-16 04:16:40,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:40,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921879868] [2024-11-16 04:16:40,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:40,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:41,709 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 373 proven. 52 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-16 04:16:41,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:41,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921879868] [2024-11-16 04:16:41,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921879868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:16:41,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940053941] [2024-11-16 04:16:41,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:41,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:16:41,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:16:41,710 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 04:16:41,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 04:16:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:41,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-16 04:16:41,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:16:42,166 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 437 proven. 83 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2024-11-16 04:16:42,166 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 04:16:42,813 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 437 proven. 83 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2024-11-16 04:16:42,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940053941] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 04:16:42,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 04:16:42,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-11-16 04:16:42,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711436409] [2024-11-16 04:16:42,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 04:16:42,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 04:16:42,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:42,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 04:16:42,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-16 04:16:42,815 INFO L87 Difference]: Start difference. First operand 91885 states and 101134 transitions. Second operand has 9 states, 9 states have (on average 84.11111111111111) internal successors, (757), 9 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:50,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:50,119 INFO L93 Difference]: Finished difference Result 237981 states and 260596 transitions. [2024-11-16 04:16:50,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-16 04:16:50,119 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 84.11111111111111) internal successors, (757), 9 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 439 [2024-11-16 04:16:50,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:50,255 INFO L225 Difference]: With dead ends: 237981 [2024-11-16 04:16:50,256 INFO L226 Difference]: Without dead ends: 139699 [2024-11-16 04:16:50,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 898 GetRequests, 882 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2024-11-16 04:16:50,273 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 7944 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 8180 mSolverCounterSat, 2344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7944 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 10524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2344 IncrementalHoareTripleChecker+Valid, 8180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:50,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7944 Valid, 354 Invalid, 10524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2344 Valid, 8180 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2024-11-16 04:16:50,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139699 states. [2024-11-16 04:16:51,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139699 to 116575. [2024-11-16 04:16:51,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116575 states, 116574 states have (on average 1.075891708271141) internal successors, (125421), 116574 states have internal predecessors, (125421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:51,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116575 states to 116575 states and 125421 transitions. [2024-11-16 04:16:51,961 INFO L78 Accepts]: Start accepts. Automaton has 116575 states and 125421 transitions. Word has length 439 [2024-11-16 04:16:51,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:51,961 INFO L471 AbstractCegarLoop]: Abstraction has 116575 states and 125421 transitions. [2024-11-16 04:16:51,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 84.11111111111111) internal successors, (757), 9 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:51,961 INFO L276 IsEmpty]: Start isEmpty. Operand 116575 states and 125421 transitions. [2024-11-16 04:16:51,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2024-11-16 04:16:51,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:51,969 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-16 04:16:51,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 04:16:52,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:16:52,169 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:52,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:52,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1584861177, now seen corresponding path program 1 times [2024-11-16 04:16:52,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:52,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049390133] [2024-11-16 04:16:52,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:52,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:52,340 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 480 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2024-11-16 04:16:52,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:52,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049390133] [2024-11-16 04:16:52,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049390133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:16:52,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:16:52,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:16:52,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362510662] [2024-11-16 04:16:52,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:16:52,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:16:52,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:52,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:16:52,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:52,341 INFO L87 Difference]: Start difference. First operand 116575 states and 125421 transitions. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:53,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:16:53,992 INFO L93 Difference]: Finished difference Result 236133 states and 254002 transitions. [2024-11-16 04:16:53,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:16:53,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 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 504 [2024-11-16 04:16:53,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:16:54,113 INFO L225 Difference]: With dead ends: 236133 [2024-11-16 04:16:54,114 INFO L226 Difference]: Without dead ends: 119560 [2024-11-16 04:16:54,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:16:54,171 INFO L432 NwaCegarLoop]: 281 mSDtfsCounter, 366 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 04:16:54,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 329 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 04:16:54,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119560 states. [2024-11-16 04:16:55,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119560 to 108460. [2024-11-16 04:16:55,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108460 states, 108459 states have (on average 1.075281903760868) internal successors, (116624), 108459 states have internal predecessors, (116624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:55,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108460 states to 108460 states and 116624 transitions. [2024-11-16 04:16:55,650 INFO L78 Accepts]: Start accepts. Automaton has 108460 states and 116624 transitions. Word has length 504 [2024-11-16 04:16:55,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:16:55,651 INFO L471 AbstractCegarLoop]: Abstraction has 108460 states and 116624 transitions. [2024-11-16 04:16:55,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:16:55,651 INFO L276 IsEmpty]: Start isEmpty. Operand 108460 states and 116624 transitions. [2024-11-16 04:16:55,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2024-11-16 04:16:55,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:16:55,663 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:16:55,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-16 04:16:55,663 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:16:55,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:16:55,663 INFO L85 PathProgramCache]: Analyzing trace with hash -387812635, now seen corresponding path program 1 times [2024-11-16 04:16:55,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:16:55,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019319258] [2024-11-16 04:16:55,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:55,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:16:55,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:56,378 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 269 proven. 52 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-16 04:16:56,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:16:56,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019319258] [2024-11-16 04:16:56,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019319258] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:16:56,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000796392] [2024-11-16 04:16:56,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:16:56,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:16:56,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:16:56,380 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 04:16:56,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 04:16:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:16:56,508 INFO L255 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 04:16:56,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:16:56,840 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 269 proven. 52 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-16 04:16:56,840 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 04:16:58,256 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 269 proven. 52 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-16 04:16:58,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000796392] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 04:16:58,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 04:16:58,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-16 04:16:58,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671030431] [2024-11-16 04:16:58,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 04:16:58,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 04:16:58,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:16:58,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 04:16:58,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-16 04:16:58,259 INFO L87 Difference]: Start difference. First operand 108460 states and 116624 transitions. Second operand has 8 states, 8 states have (on average 141.125) internal successors, (1129), 8 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:17:03,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:03,686 INFO L93 Difference]: Finished difference Result 261339 states and 280044 transitions. [2024-11-16 04:17:03,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 04:17:03,687 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 141.125) internal successors, (1129), 8 states have internal predecessors, (1129), 0 states have call successors, (0), 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 516 [2024-11-16 04:17:03,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:04,013 INFO L225 Difference]: With dead ends: 261339 [2024-11-16 04:17:04,014 INFO L226 Difference]: Without dead ends: 150748 [2024-11-16 04:17:04,030 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1042 GetRequests, 1032 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-16 04:17:04,030 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 2818 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 6250 mSolverCounterSat, 1803 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2818 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 8053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1803 IncrementalHoareTripleChecker+Valid, 6250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:04,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2818 Valid, 254 Invalid, 8053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1803 Valid, 6250 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-16 04:17:04,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150748 states. [2024-11-16 04:17:05,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150748 to 119119. [2024-11-16 04:17:05,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119119 states, 119118 states have (on average 1.0634748736546953) internal successors, (126679), 119118 states have internal predecessors, (126679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:17:05,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119119 states to 119119 states and 126679 transitions. [2024-11-16 04:17:05,342 INFO L78 Accepts]: Start accepts. Automaton has 119119 states and 126679 transitions. Word has length 516 [2024-11-16 04:17:05,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:05,342 INFO L471 AbstractCegarLoop]: Abstraction has 119119 states and 126679 transitions. [2024-11-16 04:17:05,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 141.125) internal successors, (1129), 8 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:17:05,343 INFO L276 IsEmpty]: Start isEmpty. Operand 119119 states and 126679 transitions. [2024-11-16 04:17:05,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2024-11-16 04:17:05,352 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:05,352 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:17:05,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 04:17:05,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-16 04:17:05,553 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:05,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:05,554 INFO L85 PathProgramCache]: Analyzing trace with hash -241629209, now seen corresponding path program 1 times [2024-11-16 04:17:05,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:05,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826761351] [2024-11-16 04:17:05,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:05,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:05,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:06,301 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 333 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-16 04:17:06,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:06,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826761351] [2024-11-16 04:17:06,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826761351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:06,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:17:06,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:17:06,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557426179] [2024-11-16 04:17:06,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:06,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:17:06,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:06,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:17:06,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:17:06,304 INFO L87 Difference]: Start difference. First operand 119119 states and 126679 transitions. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:17:08,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:08,142 INFO L93 Difference]: Finished difference Result 249344 states and 265138 transitions. [2024-11-16 04:17:08,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:17:08,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 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 549 [2024-11-16 04:17:08,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:08,265 INFO L225 Difference]: With dead ends: 249344 [2024-11-16 04:17:08,265 INFO L226 Difference]: Without dead ends: 130227 [2024-11-16 04:17:08,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:17:08,319 INFO L432 NwaCegarLoop]: 230 mSDtfsCounter, 408 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:08,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 275 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-16 04:17:08,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130227 states. [2024-11-16 04:17:09,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130227 to 128926. [2024-11-16 04:17:09,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128926 states, 128925 states have (on average 1.0615551677331783) internal successors, (136861), 128925 states have internal predecessors, (136861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:17:09,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128926 states to 128926 states and 136861 transitions. [2024-11-16 04:17:09,862 INFO L78 Accepts]: Start accepts. Automaton has 128926 states and 136861 transitions. Word has length 549 [2024-11-16 04:17:09,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:09,862 INFO L471 AbstractCegarLoop]: Abstraction has 128926 states and 136861 transitions. [2024-11-16 04:17:09,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:17:09,863 INFO L276 IsEmpty]: Start isEmpty. Operand 128926 states and 136861 transitions. [2024-11-16 04:17:09,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2024-11-16 04:17:09,873 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:09,873 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:17:09,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-16 04:17:09,874 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:09,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:09,874 INFO L85 PathProgramCache]: Analyzing trace with hash 149380956, now seen corresponding path program 1 times [2024-11-16 04:17:09,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:09,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117211180] [2024-11-16 04:17:09,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:09,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:09,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:10,106 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2024-11-16 04:17:10,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:10,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117211180] [2024-11-16 04:17:10,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117211180] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:10,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:17:10,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:17:10,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553485073] [2024-11-16 04:17:10,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:10,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:17:10,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:10,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:17:10,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:17:10,108 INFO L87 Difference]: Start difference. First operand 128926 states and 136861 transitions. Second operand has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:17:11,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:11,802 INFO L93 Difference]: Finished difference Result 252295 states and 267739 transitions. [2024-11-16 04:17:11,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:17:11,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 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 582 [2024-11-16 04:17:11,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:11,938 INFO L225 Difference]: With dead ends: 252295 [2024-11-16 04:17:11,938 INFO L226 Difference]: Without dead ends: 123797 [2024-11-16 04:17:12,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:17:12,011 INFO L432 NwaCegarLoop]: 652 mSDtfsCounter, 442 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:12,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 709 Invalid, 1284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 04:17:12,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123797 states. [2024-11-16 04:17:13,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123797 to 119526. [2024-11-16 04:17:13,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119526 states, 119525 states have (on average 1.0523405145367077) internal successors, (125781), 119525 states have internal predecessors, (125781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:17:13,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119526 states to 119526 states and 125781 transitions. [2024-11-16 04:17:13,742 INFO L78 Accepts]: Start accepts. Automaton has 119526 states and 125781 transitions. Word has length 582 [2024-11-16 04:17:13,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:17:13,742 INFO L471 AbstractCegarLoop]: Abstraction has 119526 states and 125781 transitions. [2024-11-16 04:17:13,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:17:13,742 INFO L276 IsEmpty]: Start isEmpty. Operand 119526 states and 125781 transitions. [2024-11-16 04:17:13,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2024-11-16 04:17:13,752 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:17:13,752 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:17:13,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-16 04:17:13,752 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:17:13,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:17:13,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1476667104, now seen corresponding path program 1 times [2024-11-16 04:17:13,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:17:13,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697323265] [2024-11-16 04:17:13,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:17:13,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:17:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:17:14,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 834 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-16 04:17:14,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:17:14,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697323265] [2024-11-16 04:17:14,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697323265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:17:14,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:17:14,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 04:17:14,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578426664] [2024-11-16 04:17:14,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:17:14,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:17:14,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:17:14,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:17:14,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:17:14,034 INFO L87 Difference]: Start difference. First operand 119526 states and 125781 transitions. Second operand has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:17:16,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:17:16,420 INFO L93 Difference]: Finished difference Result 262950 states and 276376 transitions. [2024-11-16 04:17:16,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:17:16,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 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 600 [2024-11-16 04:17:16,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:17:16,565 INFO L225 Difference]: With dead ends: 262950 [2024-11-16 04:17:16,565 INFO L226 Difference]: Without dead ends: 143852 [2024-11-16 04:17:16,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:17:16,637 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 730 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 2397 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 2796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 2397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-16 04:17:16,637 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 238 Invalid, 2796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 2397 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-16 04:17:16,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143852 states.