./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem14_label24.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem14_label24.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 052d87c43f9a6a303e543fa72a6072828b82ea75a73030e4fb80f0f24076f245 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:37:48,739 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:37:48,799 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:37:48,803 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:37:48,803 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:37:48,818 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:37:48,818 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:37:48,819 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:37:48,819 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:37:48,820 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:37:48,820 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:37:48,820 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:37:48,821 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:37:48,821 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:37:48,821 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:37:48,821 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:37:48,822 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:37:48,822 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:37:48,822 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:37:48,823 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:37:48,823 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:37:48,823 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:37:48,824 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:37:48,824 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:37:48,824 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:37:48,825 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:37:48,825 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:37:48,825 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:37:48,825 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:37:48,826 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:37:48,826 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:37:48,826 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:37:48,826 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:37:48,827 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:37:48,827 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:37:48,827 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:37:48,827 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:37:48,827 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:37:48,828 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:37:48,828 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:37:48,828 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:37:48,831 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:37:48,832 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 052d87c43f9a6a303e543fa72a6072828b82ea75a73030e4fb80f0f24076f245 [2024-11-09 19:37:49,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:37:49,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:37:49,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:37:49,043 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:37:49,043 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:37:49,044 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem14_label24.c [2024-11-09 19:37:50,471 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:37:50,696 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:37:50,696 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label24.c [2024-11-09 19:37:50,713 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a026687a/9b2bd99cad694350878b2d5ca9ccfb2f/FLAG9296b95b5 [2024-11-09 19:37:50,729 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a026687a/9b2bd99cad694350878b2d5ca9ccfb2f [2024-11-09 19:37:50,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:37:50,733 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:37:50,733 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:37:50,734 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:37:50,742 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:37:50,742 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:37:50" (1/1) ... [2024-11-09 19:37:50,743 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@333c95ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:37:50, skipping insertion in model container [2024-11-09 19:37:50,743 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:37:50" (1/1) ... [2024-11-09 19:37:50,792 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:37:51,017 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/Problem14_label24.c[4340,4353] [2024-11-09 19:37:51,175 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:37:51,182 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:37:51,202 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/Problem14_label24.c[4340,4353] [2024-11-09 19:37:51,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:37:51,286 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:37:51,286 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:37:51 WrapperNode [2024-11-09 19:37:51,290 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:37:51,291 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:37:51,291 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:37:51,291 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:37:51,300 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:37:51" (1/1) ... [2024-11-09 19:37:51,319 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:37:51" (1/1) ... [2024-11-09 19:37:51,364 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 858 [2024-11-09 19:37:51,364 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:37:51,365 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:37:51,365 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:37:51,365 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:37:51,373 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:37:51" (1/1) ... [2024-11-09 19:37:51,373 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:37:51" (1/1) ... [2024-11-09 19:37:51,386 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:37:51" (1/1) ... [2024-11-09 19:37:51,408 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-09 19:37:51,411 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:37:51" (1/1) ... [2024-11-09 19:37:51,411 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:37:51" (1/1) ... [2024-11-09 19:37:51,429 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:37:51" (1/1) ... [2024-11-09 19:37:51,431 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:37:51" (1/1) ... [2024-11-09 19:37:51,434 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:37:51" (1/1) ... [2024-11-09 19:37:51,436 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:37:51" (1/1) ... [2024-11-09 19:37:51,441 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:37:51,442 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:37:51,442 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:37:51,442 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:37:51,442 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:37:51" (1/1) ... [2024-11-09 19:37:51,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:37:51,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:37:51,474 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 19:37:51,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 19:37:51,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:37:51,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:37:51,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:37:51,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:37:51,580 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:37:51,582 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:37:52,694 INFO L? ?]: Removed 236 outVars from TransFormulas that were not future-live. [2024-11-09 19:37:52,695 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:37:52,714 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:37:52,714 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:37:52,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:37:52 BoogieIcfgContainer [2024-11-09 19:37:52,717 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:37:52,719 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:37:52,719 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:37:52,721 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:37:52,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:37:50" (1/3) ... [2024-11-09 19:37:52,723 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7034d5db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:37:52, skipping insertion in model container [2024-11-09 19:37:52,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:37:51" (2/3) ... [2024-11-09 19:37:52,724 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7034d5db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:37:52, skipping insertion in model container [2024-11-09 19:37:52,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:37:52" (3/3) ... [2024-11-09 19:37:52,726 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label24.c [2024-11-09 19:37:52,737 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:37:52,738 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:37:52,795 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:37:52,800 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;@9196503, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:37:52,801 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:37:52,805 INFO L276 IsEmpty]: Start isEmpty. Operand has 248 states, 246 states have (on average 2.186991869918699) internal successors, (538), 247 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:37:52,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 19:37:52,811 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:37:52,813 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] [2024-11-09 19:37:52,813 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:37:52,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:37:52,817 INFO L85 PathProgramCache]: Analyzing trace with hash 886002259, now seen corresponding path program 1 times [2024-11-09 19:37:52,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:37:52,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442255010] [2024-11-09 19:37:52,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:37:52,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:37:52,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:37:53,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:37:53,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:37:53,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442255010] [2024-11-09 19:37:53,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442255010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:37:53,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:37:53,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:37:53,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355921261] [2024-11-09 19:37:53,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:37:53,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:37:53,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:37:53,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:37:53,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:37:53,097 INFO L87 Difference]: Start difference. First operand has 248 states, 246 states have (on average 2.186991869918699) internal successors, (538), 247 states have internal predecessors, (538), 0 states have call successors, (0), 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 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:37:54,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:37:54,067 INFO L93 Difference]: Finished difference Result 691 states and 1561 transitions. [2024-11-09 19:37:54,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:37:54,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2024-11-09 19:37:54,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:37:54,081 INFO L225 Difference]: With dead ends: 691 [2024-11-09 19:37:54,082 INFO L226 Difference]: Without dead ends: 363 [2024-11-09 19:37:54,086 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:37:54,090 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 290 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:37:54,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 143 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 19:37:54,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-11-09 19:37:54,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2024-11-09 19:37:54,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 2.041436464088398) internal successors, (739), 362 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:37:54,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 739 transitions. [2024-11-09 19:37:54,137 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 739 transitions. Word has length 43 [2024-11-09 19:37:54,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:37:54,137 INFO L471 AbstractCegarLoop]: Abstraction has 363 states and 739 transitions. [2024-11-09 19:37:54,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:37:54,138 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 739 transitions. [2024-11-09 19:37:54,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 19:37:54,141 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:37:54,141 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:37:54,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:37:54,141 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:37:54,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:37:54,142 INFO L85 PathProgramCache]: Analyzing trace with hash 654067972, now seen corresponding path program 1 times [2024-11-09 19:37:54,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:37:54,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945118415] [2024-11-09 19:37:54,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:37:54,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:37:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:37:54,444 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:37:54,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:37:54,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945118415] [2024-11-09 19:37:54,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945118415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:37:54,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:37:54,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:37:54,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678511280] [2024-11-09 19:37:54,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:37:54,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:37:54,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:37:54,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:37:54,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:37:54,450 INFO L87 Difference]: Start difference. First operand 363 states and 739 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 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) [2024-11-09 19:37:55,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:37:55,694 INFO L93 Difference]: Finished difference Result 1082 states and 2132 transitions. [2024-11-09 19:37:55,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:37:55,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 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 [2024-11-09 19:37:55,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:37:55,698 INFO L225 Difference]: With dead ends: 1082 [2024-11-09 19:37:55,699 INFO L226 Difference]: Without dead ends: 721 [2024-11-09 19:37:55,699 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:37:55,700 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 760 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 1428 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:37:55,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 128 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1428 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 19:37:55,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2024-11-09 19:37:55,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 721. [2024-11-09 19:37:55,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 720 states have (on average 1.8875) internal successors, (1359), 720 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:37:55,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1359 transitions. [2024-11-09 19:37:55,721 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1359 transitions. Word has length 123 [2024-11-09 19:37:55,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:37:55,721 INFO L471 AbstractCegarLoop]: Abstraction has 721 states and 1359 transitions. [2024-11-09 19:37:55,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 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) [2024-11-09 19:37:55,722 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1359 transitions. [2024-11-09 19:37:55,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-09 19:37:55,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:37:55,726 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:37:55,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:37:55,726 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:37:55,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:37:55,727 INFO L85 PathProgramCache]: Analyzing trace with hash -2065283438, now seen corresponding path program 1 times [2024-11-09 19:37:55,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:37:55,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501734688] [2024-11-09 19:37:55,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:37:55,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:37:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:37:56,036 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:37:56,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:37:56,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501734688] [2024-11-09 19:37:56,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501734688] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:37:56,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649817525] [2024-11-09 19:37:56,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:37:56,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:37:56,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:37:56,039 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:37:56,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 19:37:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:37:56,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:37:56,140 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:37:56,210 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:37:56,211 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:37:56,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649817525] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:37:56,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:37:56,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-09 19:37:56,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086443045] [2024-11-09 19:37:56,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:37:56,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:37:56,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:37:56,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:37:56,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:37:56,213 INFO L87 Difference]: Start difference. First operand 721 states and 1359 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:37:56,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:37:56,891 INFO L93 Difference]: Finished difference Result 1082 states and 2096 transitions. [2024-11-09 19:37:56,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:37:56,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2024-11-09 19:37:56,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:37:56,896 INFO L225 Difference]: With dead ends: 1082 [2024-11-09 19:37:56,896 INFO L226 Difference]: Without dead ends: 1079 [2024-11-09 19:37:56,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:37:56,897 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 257 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:37:56,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 40 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 19:37:56,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2024-11-09 19:37:56,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 900. [2024-11-09 19:37:56,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 899 states have (on average 1.9632925472747498) internal successors, (1765), 899 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:37:56,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1765 transitions. [2024-11-09 19:37:56,928 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1765 transitions. Word has length 149 [2024-11-09 19:37:56,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:37:56,928 INFO L471 AbstractCegarLoop]: Abstraction has 900 states and 1765 transitions. [2024-11-09 19:37:56,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:37:56,929 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1765 transitions. [2024-11-09 19:37:56,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-09 19:37:56,935 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:37:56,935 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:37:56,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 19:37:57,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:37:57,136 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:37:57,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:37:57,137 INFO L85 PathProgramCache]: Analyzing trace with hash -333290837, now seen corresponding path program 1 times [2024-11-09 19:37:57,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:37:57,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172856560] [2024-11-09 19:37:57,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:37:57,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:37:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:37:57,333 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 19:37:57,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:37:57,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172856560] [2024-11-09 19:37:57,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172856560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:37:57,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:37:57,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:37:57,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194904937] [2024-11-09 19:37:57,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:37:57,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:37:57,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:37:57,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:37:57,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:37:57,338 INFO L87 Difference]: Start difference. First operand 900 states and 1765 transitions. Second operand has 4 states, 4 states have (on average 51.75) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:37:58,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:37:58,170 INFO L93 Difference]: Finished difference Result 2007 states and 3886 transitions. [2024-11-09 19:37:58,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:37:58,170 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2024-11-09 19:37:58,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:37:58,174 INFO L225 Difference]: With dead ends: 2007 [2024-11-09 19:37:58,174 INFO L226 Difference]: Without dead ends: 1079 [2024-11-09 19:37:58,175 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:37:58,175 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 229 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:37:58,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 125 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 19:37:58,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2024-11-09 19:37:58,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1079. [2024-11-09 19:37:58,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 1.8079777365491652) internal successors, (1949), 1078 states have internal predecessors, (1949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:37:58,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1949 transitions. [2024-11-09 19:37:58,190 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1949 transitions. Word has length 216 [2024-11-09 19:37:58,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:37:58,190 INFO L471 AbstractCegarLoop]: Abstraction has 1079 states and 1949 transitions. [2024-11-09 19:37:58,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:37:58,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1949 transitions. [2024-11-09 19:37:58,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-09 19:37:58,192 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:37:58,192 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, 2, 2, 2, 2, 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] [2024-11-09 19:37:58,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:37:58,192 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:37:58,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:37:58,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1339296397, now seen corresponding path program 1 times [2024-11-09 19:37:58,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:37:58,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58945563] [2024-11-09 19:37:58,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:37:58,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:37:58,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:37:58,417 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 79 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:37:58,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:37:58,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58945563] [2024-11-09 19:37:58,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58945563] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:37:58,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882539848] [2024-11-09 19:37:58,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:37:58,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:37:58,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:37:58,419 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) [2024-11-09 19:37:58,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 19:37:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:37:58,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:37:58,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:37:58,543 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-09 19:37:58,543 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:37:58,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882539848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:37:58,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:37:58,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 19:37:58,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849070525] [2024-11-09 19:37:58,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:37:58,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:37:58,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:37:58,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:37:58,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:37:58,545 INFO L87 Difference]: Start difference. First operand 1079 states and 1949 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:37:59,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:37:59,152 INFO L93 Difference]: Finished difference Result 2514 states and 4631 transitions. [2024-11-09 19:37:59,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:37:59,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2024-11-09 19:37:59,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:37:59,156 INFO L225 Difference]: With dead ends: 2514 [2024-11-09 19:37:59,156 INFO L226 Difference]: Without dead ends: 1437 [2024-11-09 19:37:59,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:37:59,158 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 255 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:37:59,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 89 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 19:37:59,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2024-11-09 19:37:59,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1079. [2024-11-09 19:37:59,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 1.8079777365491652) internal successors, (1949), 1078 states have internal predecessors, (1949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:37:59,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1949 transitions. [2024-11-09 19:37:59,172 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1949 transitions. Word has length 216 [2024-11-09 19:37:59,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:37:59,172 INFO L471 AbstractCegarLoop]: Abstraction has 1079 states and 1949 transitions. [2024-11-09 19:37:59,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:37:59,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1949 transitions. [2024-11-09 19:37:59,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-09 19:37:59,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:37:59,174 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:37:59,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 19:37:59,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:37:59,379 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:37:59,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:37:59,379 INFO L85 PathProgramCache]: Analyzing trace with hash 517101221, now seen corresponding path program 1 times [2024-11-09 19:37:59,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:37:59,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849184221] [2024-11-09 19:37:59,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:37:59,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:37:59,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:37:59,615 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:37:59,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:37:59,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849184221] [2024-11-09 19:37:59,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849184221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:37:59,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:37:59,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:37:59,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822419463] [2024-11-09 19:37:59,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:37:59,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:37:59,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:37:59,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:37:59,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:37:59,620 INFO L87 Difference]: Start difference. First operand 1079 states and 1949 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:00,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:38:00,331 INFO L93 Difference]: Finished difference Result 2514 states and 4557 transitions. [2024-11-09 19:38:00,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:38:00,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 219 [2024-11-09 19:38:00,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:38:00,336 INFO L225 Difference]: With dead ends: 2514 [2024-11-09 19:38:00,336 INFO L226 Difference]: Without dead ends: 1437 [2024-11-09 19:38:00,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:38:00,337 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 224 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:38:00,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 62 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 19:38:00,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2024-11-09 19:38:00,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1437. [2024-11-09 19:38:00,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1436 states have (on average 1.7848189415041782) internal successors, (2563), 1436 states have internal predecessors, (2563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:00,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 2563 transitions. [2024-11-09 19:38:00,355 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 2563 transitions. Word has length 219 [2024-11-09 19:38:00,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:38:00,355 INFO L471 AbstractCegarLoop]: Abstraction has 1437 states and 2563 transitions. [2024-11-09 19:38:00,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:00,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 2563 transitions. [2024-11-09 19:38:00,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2024-11-09 19:38:00,358 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:38:00,358 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:38:00,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:38:00,359 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:38:00,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:38:00,359 INFO L85 PathProgramCache]: Analyzing trace with hash 945370456, now seen corresponding path program 1 times [2024-11-09 19:38:00,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:38:00,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067313084] [2024-11-09 19:38:00,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:00,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:38:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:00,685 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 198 proven. 132 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-09 19:38:00,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:38:00,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067313084] [2024-11-09 19:38:00,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067313084] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:38:00,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548005397] [2024-11-09 19:38:00,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:00,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:38:00,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:38:00,687 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) [2024-11-09 19:38:00,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 19:38:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:00,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:38:00,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:38:01,089 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2024-11-09 19:38:01,090 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:38:01,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548005397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:38:01,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:38:01,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-11-09 19:38:01,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117599140] [2024-11-09 19:38:01,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:38:01,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:38:01,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:38:01,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:38:01,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:38:01,092 INFO L87 Difference]: Start difference. First operand 1437 states and 2563 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:01,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:38:01,673 INFO L93 Difference]: Finished difference Result 3409 states and 6210 transitions. [2024-11-09 19:38:01,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:38:01,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 0 states have call successors, (0), 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 380 [2024-11-09 19:38:01,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:38:01,701 INFO L225 Difference]: With dead ends: 3409 [2024-11-09 19:38:01,702 INFO L226 Difference]: Without dead ends: 2153 [2024-11-09 19:38:01,704 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:38:01,705 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 179 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:38:01,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 50 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 19:38:01,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2024-11-09 19:38:01,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 1974. [2024-11-09 19:38:01,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1974 states, 1973 states have (on average 1.7952356817029904) internal successors, (3542), 1973 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:01,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3542 transitions. [2024-11-09 19:38:01,726 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3542 transitions. Word has length 380 [2024-11-09 19:38:01,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:38:01,726 INFO L471 AbstractCegarLoop]: Abstraction has 1974 states and 3542 transitions. [2024-11-09 19:38:01,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:01,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3542 transitions. [2024-11-09 19:38:01,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2024-11-09 19:38:01,730 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:38:01,730 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:38:01,744 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 19:38:01,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:38:01,935 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:38:01,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:38:01,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1524458914, now seen corresponding path program 1 times [2024-11-09 19:38:01,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:38:01,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363183106] [2024-11-09 19:38:01,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:01,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:38:01,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:02,242 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2024-11-09 19:38:02,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:38:02,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363183106] [2024-11-09 19:38:02,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363183106] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:38:02,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053824701] [2024-11-09 19:38:02,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:02,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:38:02,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:38:02,246 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) [2024-11-09 19:38:02,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 19:38:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:02,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:38:02,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:38:02,725 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2024-11-09 19:38:02,726 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:38:02,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053824701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:38:02,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:38:02,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-09 19:38:02,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167178327] [2024-11-09 19:38:02,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:38:02,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:38:02,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:38:02,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:38:02,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:38:02,728 INFO L87 Difference]: Start difference. First operand 1974 states and 3542 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:03,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:38:03,269 INFO L93 Difference]: Finished difference Result 3051 states and 5410 transitions. [2024-11-09 19:38:03,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:38:03,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 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 426 [2024-11-09 19:38:03,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:38:03,277 INFO L225 Difference]: With dead ends: 3051 [2024-11-09 19:38:03,277 INFO L226 Difference]: Without dead ends: 3048 [2024-11-09 19:38:03,278 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:38:03,278 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 140 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:38:03,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 32 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 19:38:03,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3048 states. [2024-11-09 19:38:03,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3048 to 1795. [2024-11-09 19:38:03,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1794 states have (on average 1.7692307692307692) internal successors, (3174), 1794 states have internal predecessors, (3174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:03,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 3174 transitions. [2024-11-09 19:38:03,303 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 3174 transitions. Word has length 426 [2024-11-09 19:38:03,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:38:03,303 INFO L471 AbstractCegarLoop]: Abstraction has 1795 states and 3174 transitions. [2024-11-09 19:38:03,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:03,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 3174 transitions. [2024-11-09 19:38:03,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2024-11-09 19:38:03,307 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:38:03,308 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:38:03,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 19:38:03,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:38:03,508 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:38:03,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:38:03,509 INFO L85 PathProgramCache]: Analyzing trace with hash -476927397, now seen corresponding path program 1 times [2024-11-09 19:38:03,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:38:03,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587560085] [2024-11-09 19:38:03,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:03,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:38:03,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:03,814 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 413 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-11-09 19:38:03,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:38:03,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587560085] [2024-11-09 19:38:03,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587560085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:38:03,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:38:03,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:38:03,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266286269] [2024-11-09 19:38:03,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:38:03,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:38:03,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:38:03,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:38:03,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:38:03,817 INFO L87 Difference]: Start difference. First operand 1795 states and 3174 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) [2024-11-09 19:38:04,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:38:04,493 INFO L93 Difference]: Finished difference Result 3618 states and 6399 transitions. [2024-11-09 19:38:04,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:38:04,494 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 429 [2024-11-09 19:38:04,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:38:04,499 INFO L225 Difference]: With dead ends: 3618 [2024-11-09 19:38:04,499 INFO L226 Difference]: Without dead ends: 1974 [2024-11-09 19:38:04,500 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:38:04,501 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 238 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:38:04,501 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 23 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 19:38:04,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2024-11-09 19:38:04,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1795. [2024-11-09 19:38:04,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1794 states have (on average 1.7190635451505016) internal successors, (3084), 1794 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:04,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 3084 transitions. [2024-11-09 19:38:04,521 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 3084 transitions. Word has length 429 [2024-11-09 19:38:04,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:38:04,521 INFO L471 AbstractCegarLoop]: Abstraction has 1795 states and 3084 transitions. [2024-11-09 19:38:04,522 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) [2024-11-09 19:38:04,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 3084 transitions. [2024-11-09 19:38:04,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2024-11-09 19:38:04,525 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:38:04,525 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:38:04,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 19:38:04,525 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:38:04,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:38:04,526 INFO L85 PathProgramCache]: Analyzing trace with hash 767756301, now seen corresponding path program 1 times [2024-11-09 19:38:04,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:38:04,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821798796] [2024-11-09 19:38:04,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:04,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:38:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:04,842 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 368 proven. 0 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2024-11-09 19:38:04,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:38:04,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821798796] [2024-11-09 19:38:04,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821798796] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:38:04,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:38:04,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:38:04,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506444377] [2024-11-09 19:38:04,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:38:04,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:38:04,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:38:04,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:38:04,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:38:04,844 INFO L87 Difference]: Start difference. First operand 1795 states and 3084 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:05,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:38:05,439 INFO L93 Difference]: Finished difference Result 4125 states and 7136 transitions. [2024-11-09 19:38:05,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:38:05,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 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 440 [2024-11-09 19:38:05,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:38:05,446 INFO L225 Difference]: With dead ends: 4125 [2024-11-09 19:38:05,447 INFO L226 Difference]: Without dead ends: 2511 [2024-11-09 19:38:05,448 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:38:05,449 INFO L432 NwaCegarLoop]: 331 mSDtfsCounter, 226 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:38:05,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 338 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 19:38:05,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2024-11-09 19:38:05,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2332. [2024-11-09 19:38:05,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2332 states, 2331 states have (on average 1.7151437151437152) internal successors, (3998), 2331 states have internal predecessors, (3998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:05,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 3998 transitions. [2024-11-09 19:38:05,478 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 3998 transitions. Word has length 440 [2024-11-09 19:38:05,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:38:05,478 INFO L471 AbstractCegarLoop]: Abstraction has 2332 states and 3998 transitions. [2024-11-09 19:38:05,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:05,479 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 3998 transitions. [2024-11-09 19:38:05,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2024-11-09 19:38:05,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:38:05,481 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:38:05,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 19:38:05,482 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:38:05,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:38:05,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1307622871, now seen corresponding path program 1 times [2024-11-09 19:38:05,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:38:05,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252423362] [2024-11-09 19:38:05,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:05,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:38:05,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:06,053 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 263 proven. 198 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2024-11-09 19:38:06,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:38:06,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252423362] [2024-11-09 19:38:06,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252423362] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:38:06,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489078261] [2024-11-09 19:38:06,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:06,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:38:06,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:38:06,056 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:38:06,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 19:38:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:06,191 INFO L255 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:38:06,194 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:38:06,270 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2024-11-09 19:38:06,271 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:38:06,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489078261] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:38:06,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:38:06,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-09 19:38:06,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730818227] [2024-11-09 19:38:06,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:38:06,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:38:06,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:38:06,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:38:06,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:38:06,272 INFO L87 Difference]: Start difference. First operand 2332 states and 3998 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:06,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:38:06,842 INFO L93 Difference]: Finished difference Result 3230 states and 5534 transitions. [2024-11-09 19:38:06,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:38:06,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 455 [2024-11-09 19:38:06,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:38:06,850 INFO L225 Difference]: With dead ends: 3230 [2024-11-09 19:38:06,850 INFO L226 Difference]: Without dead ends: 3227 [2024-11-09 19:38:06,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:38:06,851 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 274 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:38:06,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 15 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 19:38:06,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3227 states. [2024-11-09 19:38:06,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3227 to 2332. [2024-11-09 19:38:06,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2332 states, 2331 states have (on average 1.7151437151437152) internal successors, (3998), 2331 states have internal predecessors, (3998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:06,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 3998 transitions. [2024-11-09 19:38:06,883 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 3998 transitions. Word has length 455 [2024-11-09 19:38:06,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:38:06,884 INFO L471 AbstractCegarLoop]: Abstraction has 2332 states and 3998 transitions. [2024-11-09 19:38:06,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:06,884 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 3998 transitions. [2024-11-09 19:38:06,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2024-11-09 19:38:06,886 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:38:06,886 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:38:06,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 19:38:07,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 19:38:07,087 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:38:07,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:38:07,088 INFO L85 PathProgramCache]: Analyzing trace with hash -622401495, now seen corresponding path program 1 times [2024-11-09 19:38:07,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:38:07,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389858115] [2024-11-09 19:38:07,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:07,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:38:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:07,300 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 482 proven. 0 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2024-11-09 19:38:07,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:38:07,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389858115] [2024-11-09 19:38:07,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389858115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:38:07,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:38:07,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:38:07,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934163182] [2024-11-09 19:38:07,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:38:07,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:38:07,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:38:07,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:38:07,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:38:07,303 INFO L87 Difference]: Start difference. First operand 2332 states and 3998 transitions. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:08,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:38:08,072 INFO L93 Difference]: Finished difference Result 5199 states and 8986 transitions. [2024-11-09 19:38:08,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:38:08,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 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 481 [2024-11-09 19:38:08,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:38:08,081 INFO L225 Difference]: With dead ends: 5199 [2024-11-09 19:38:08,081 INFO L226 Difference]: Without dead ends: 3227 [2024-11-09 19:38:08,083 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:38:08,084 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 188 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:38:08,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 53 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 19:38:08,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3227 states. [2024-11-09 19:38:08,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3227 to 3227. [2024-11-09 19:38:08,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3227 states, 3226 states have (on average 1.7114073155610663) internal successors, (5521), 3226 states have internal predecessors, (5521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:08,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3227 states to 3227 states and 5521 transitions. [2024-11-09 19:38:08,132 INFO L78 Accepts]: Start accepts. Automaton has 3227 states and 5521 transitions. Word has length 481 [2024-11-09 19:38:08,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:38:08,132 INFO L471 AbstractCegarLoop]: Abstraction has 3227 states and 5521 transitions. [2024-11-09 19:38:08,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:08,133 INFO L276 IsEmpty]: Start isEmpty. Operand 3227 states and 5521 transitions. [2024-11-09 19:38:08,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2024-11-09 19:38:08,137 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:38:08,138 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, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:38:08,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 19:38:08,138 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:38:08,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:38:08,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1083894744, now seen corresponding path program 1 times [2024-11-09 19:38:08,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:38:08,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738737530] [2024-11-09 19:38:08,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:08,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:38:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:08,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1034 backedges. 690 proven. 198 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-11-09 19:38:08,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:38:08,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738737530] [2024-11-09 19:38:08,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738737530] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:38:08,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259361444] [2024-11-09 19:38:08,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:08,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:38:08,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:38:08,617 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:38:08,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 19:38:08,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:08,746 INFO L255 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:38:08,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:38:08,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1034 backedges. 199 proven. 0 refuted. 0 times theorem prover too weak. 835 trivial. 0 not checked. [2024-11-09 19:38:08,794 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:38:08,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259361444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:38:08,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:38:08,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-09 19:38:08,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183991457] [2024-11-09 19:38:08,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:38:08,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:38:08,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:38:08,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:38:08,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:38:08,797 INFO L87 Difference]: Start difference. First operand 3227 states and 5521 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:09,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:38:09,320 INFO L93 Difference]: Finished difference Result 7347 states and 12588 transitions. [2024-11-09 19:38:09,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:38:09,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 513 [2024-11-09 19:38:09,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:38:09,328 INFO L225 Difference]: With dead ends: 7347 [2024-11-09 19:38:09,328 INFO L226 Difference]: Without dead ends: 3943 [2024-11-09 19:38:09,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:38:09,331 INFO L432 NwaCegarLoop]: 358 mSDtfsCounter, 253 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:38:09,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 365 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 19:38:09,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3943 states. [2024-11-09 19:38:09,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3943 to 3227. [2024-11-09 19:38:09,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3227 states, 3226 states have (on average 1.703967761934284) internal successors, (5497), 3226 states have internal predecessors, (5497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:09,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3227 states to 3227 states and 5497 transitions. [2024-11-09 19:38:09,369 INFO L78 Accepts]: Start accepts. Automaton has 3227 states and 5497 transitions. Word has length 513 [2024-11-09 19:38:09,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:38:09,369 INFO L471 AbstractCegarLoop]: Abstraction has 3227 states and 5497 transitions. [2024-11-09 19:38:09,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:09,370 INFO L276 IsEmpty]: Start isEmpty. Operand 3227 states and 5497 transitions. [2024-11-09 19:38:09,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2024-11-09 19:38:09,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:38:09,374 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:38:09,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 19:38:09,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:38:09,578 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:38:09,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:38:09,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1909090558, now seen corresponding path program 1 times [2024-11-09 19:38:09,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:38:09,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641393966] [2024-11-09 19:38:09,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:09,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:38:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:09,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1118 backedges. 750 proven. 11 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2024-11-09 19:38:09,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:38:09,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641393966] [2024-11-09 19:38:09,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641393966] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:38:09,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034179009] [2024-11-09 19:38:09,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:09,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:38:09,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:38:09,958 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:38:09,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 19:38:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:10,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 19:38:10,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:38:10,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1118 backedges. 442 proven. 0 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2024-11-09 19:38:10,626 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:38:10,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034179009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:38:10,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:38:10,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-09 19:38:10,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747908299] [2024-11-09 19:38:10,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:38:10,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:38:10,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:38:10,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:38:10,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:38:10,629 INFO L87 Difference]: Start difference. First operand 3227 states and 5497 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:11,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:38:11,149 INFO L93 Difference]: Finished difference Result 6989 states and 11918 transitions. [2024-11-09 19:38:11,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:38:11,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 543 [2024-11-09 19:38:11,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:38:11,155 INFO L225 Difference]: With dead ends: 6989 [2024-11-09 19:38:11,155 INFO L226 Difference]: Without dead ends: 4122 [2024-11-09 19:38:11,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 542 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:38:11,158 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 191 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:38:11,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 51 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 19:38:11,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4122 states. [2024-11-09 19:38:11,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4122 to 3585. [2024-11-09 19:38:11,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3585 states, 3584 states have (on average 1.703125) internal successors, (6104), 3584 states have internal predecessors, (6104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:11,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 6104 transitions. [2024-11-09 19:38:11,197 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 6104 transitions. Word has length 543 [2024-11-09 19:38:11,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:38:11,197 INFO L471 AbstractCegarLoop]: Abstraction has 3585 states and 6104 transitions. [2024-11-09 19:38:11,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:11,198 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 6104 transitions. [2024-11-09 19:38:11,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2024-11-09 19:38:11,201 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:38:11,202 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:38:11,215 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 19:38:11,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:38:11,405 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:38:11,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:38:11,407 INFO L85 PathProgramCache]: Analyzing trace with hash 2022619669, now seen corresponding path program 1 times [2024-11-09 19:38:11,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:38:11,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641122480] [2024-11-09 19:38:11,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:11,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:38:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:11,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1507 backedges. 1039 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2024-11-09 19:38:11,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:38:11,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641122480] [2024-11-09 19:38:11,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641122480] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:38:11,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:38:11,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:38:11,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724649058] [2024-11-09 19:38:11,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:38:11,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:38:11,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:38:11,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:38:11,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:38:11,815 INFO L87 Difference]: Start difference. First operand 3585 states and 6104 transitions. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:12,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:38:12,359 INFO L93 Difference]: Finished difference Result 7168 states and 12208 transitions. [2024-11-09 19:38:12,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:38:12,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 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 613 [2024-11-09 19:38:12,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:38:12,365 INFO L225 Difference]: With dead ends: 7168 [2024-11-09 19:38:12,365 INFO L226 Difference]: Without dead ends: 3764 [2024-11-09 19:38:12,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:38:12,368 INFO L432 NwaCegarLoop]: 353 mSDtfsCounter, 223 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:38:12,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 360 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 19:38:12,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3764 states. [2024-11-09 19:38:12,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3764 to 3227. [2024-11-09 19:38:12,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3227 states, 3226 states have (on average 1.7052076875387476) internal successors, (5501), 3226 states have internal predecessors, (5501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:12,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3227 states to 3227 states and 5501 transitions. [2024-11-09 19:38:12,398 INFO L78 Accepts]: Start accepts. Automaton has 3227 states and 5501 transitions. Word has length 613 [2024-11-09 19:38:12,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:38:12,399 INFO L471 AbstractCegarLoop]: Abstraction has 3227 states and 5501 transitions. [2024-11-09 19:38:12,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:12,399 INFO L276 IsEmpty]: Start isEmpty. Operand 3227 states and 5501 transitions. [2024-11-09 19:38:12,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2024-11-09 19:38:12,403 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:38:12,403 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 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, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:38:12,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 19:38:12,403 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:38:12,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:38:12,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1725598630, now seen corresponding path program 1 times [2024-11-09 19:38:12,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:38:12,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833433892] [2024-11-09 19:38:12,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:12,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:38:12,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:12,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2001 backedges. 1533 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2024-11-09 19:38:12,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:38:12,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833433892] [2024-11-09 19:38:12,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833433892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:38:12,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:38:12,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:38:12,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919785166] [2024-11-09 19:38:12,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:38:12,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:38:12,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:38:12,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:38:12,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:38:12,765 INFO L87 Difference]: Start difference. First operand 3227 states and 5501 transitions. Second operand has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:13,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:38:13,517 INFO L93 Difference]: Finished difference Result 7168 states and 12216 transitions. [2024-11-09 19:38:13,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:38:13,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 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 698 [2024-11-09 19:38:13,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:38:13,523 INFO L225 Difference]: With dead ends: 7168 [2024-11-09 19:38:13,523 INFO L226 Difference]: Without dead ends: 3943 [2024-11-09 19:38:13,529 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:38:13,530 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 441 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 1300 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:38:13,530 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 71 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1300 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 19:38:13,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3943 states. [2024-11-09 19:38:13,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3943 to 3406. [2024-11-09 19:38:13,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3406 states, 3405 states have (on average 1.7007342143906021) internal successors, (5791), 3405 states have internal predecessors, (5791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:13,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3406 states to 3406 states and 5791 transitions. [2024-11-09 19:38:13,576 INFO L78 Accepts]: Start accepts. Automaton has 3406 states and 5791 transitions. Word has length 698 [2024-11-09 19:38:13,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:38:13,577 INFO L471 AbstractCegarLoop]: Abstraction has 3406 states and 5791 transitions. [2024-11-09 19:38:13,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:13,577 INFO L276 IsEmpty]: Start isEmpty. Operand 3406 states and 5791 transitions. [2024-11-09 19:38:13,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2024-11-09 19:38:13,583 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:38:13,583 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2024-11-09 19:38:13,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 19:38:13,583 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:38:13,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:38:13,584 INFO L85 PathProgramCache]: Analyzing trace with hash 228062091, now seen corresponding path program 1 times [2024-11-09 19:38:13,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:38:13,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384694151] [2024-11-09 19:38:13,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:13,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:38:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:14,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1718 backedges. 1205 proven. 156 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2024-11-09 19:38:14,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:38:14,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384694151] [2024-11-09 19:38:14,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384694151] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:38:14,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535706711] [2024-11-09 19:38:14,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:14,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:38:14,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:38:14,003 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:38:14,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 19:38:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:14,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 19:38:14,174 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:38:14,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1718 backedges. 1205 proven. 156 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2024-11-09 19:38:14,455 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:38:14,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1718 backedges. 1205 proven. 156 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2024-11-09 19:38:14,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535706711] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 19:38:14,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 19:38:14,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-09 19:38:14,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844003064] [2024-11-09 19:38:14,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 19:38:14,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 19:38:14,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:38:14,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 19:38:14,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:38:14,745 INFO L87 Difference]: Start difference. First operand 3406 states and 5791 transitions. Second operand has 6 states, 6 states have (on average 142.83333333333334) internal successors, (857), 6 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:15,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:38:15,800 INFO L93 Difference]: Finished difference Result 8600 states and 14677 transitions. [2024-11-09 19:38:15,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 19:38:15,801 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 142.83333333333334) internal successors, (857), 6 states have internal predecessors, (857), 0 states have call successors, (0), 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 773 [2024-11-09 19:38:15,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:38:15,808 INFO L225 Difference]: With dead ends: 8600 [2024-11-09 19:38:15,808 INFO L226 Difference]: Without dead ends: 5375 [2024-11-09 19:38:15,810 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1548 GetRequests, 1544 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:38:15,811 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 639 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:38:15,811 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 55 Invalid, 1406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 19:38:15,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5375 states. [2024-11-09 19:38:15,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5375 to 4301. [2024-11-09 19:38:15,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4301 states, 4300 states have (on average 1.707674418604651) internal successors, (7343), 4300 states have internal predecessors, (7343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:15,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4301 states to 4301 states and 7343 transitions. [2024-11-09 19:38:15,873 INFO L78 Accepts]: Start accepts. Automaton has 4301 states and 7343 transitions. Word has length 773 [2024-11-09 19:38:15,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:38:15,874 INFO L471 AbstractCegarLoop]: Abstraction has 4301 states and 7343 transitions. [2024-11-09 19:38:15,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 142.83333333333334) internal successors, (857), 6 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:15,874 INFO L276 IsEmpty]: Start isEmpty. Operand 4301 states and 7343 transitions. [2024-11-09 19:38:15,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2024-11-09 19:38:15,878 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:38:15,878 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:38:15,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 19:38:16,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 19:38:16,079 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:38:16,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:38:16,080 INFO L85 PathProgramCache]: Analyzing trace with hash 51954576, now seen corresponding path program 1 times [2024-11-09 19:38:16,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:38:16,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549914281] [2024-11-09 19:38:16,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:16,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:38:16,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:16,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2125 backedges. 1331 proven. 0 refuted. 0 times theorem prover too weak. 794 trivial. 0 not checked. [2024-11-09 19:38:16,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:38:16,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549914281] [2024-11-09 19:38:16,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549914281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:38:16,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:38:16,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:38:16,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293698350] [2024-11-09 19:38:16,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:38:16,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:38:16,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:38:16,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:38:16,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:38:16,420 INFO L87 Difference]: Start difference. First operand 4301 states and 7343 transitions. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:17,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:38:17,034 INFO L93 Difference]: Finished difference Result 9137 states and 15658 transitions. [2024-11-09 19:38:17,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:38:17,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 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 776 [2024-11-09 19:38:17,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:38:17,041 INFO L225 Difference]: With dead ends: 9137 [2024-11-09 19:38:17,041 INFO L226 Difference]: Without dead ends: 4838 [2024-11-09 19:38:17,044 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:38:17,044 INFO L432 NwaCegarLoop]: 335 mSDtfsCounter, 223 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:38:17,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 342 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 19:38:17,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4838 states. [2024-11-09 19:38:17,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4838 to 4480. [2024-11-09 19:38:17,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4480 states, 4479 states have (on average 1.6936816253628042) internal successors, (7586), 4479 states have internal predecessors, (7586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:17,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4480 states to 4480 states and 7586 transitions. [2024-11-09 19:38:17,099 INFO L78 Accepts]: Start accepts. Automaton has 4480 states and 7586 transitions. Word has length 776 [2024-11-09 19:38:17,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:38:17,100 INFO L471 AbstractCegarLoop]: Abstraction has 4480 states and 7586 transitions. [2024-11-09 19:38:17,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:17,100 INFO L276 IsEmpty]: Start isEmpty. Operand 4480 states and 7586 transitions. [2024-11-09 19:38:17,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 947 [2024-11-09 19:38:17,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:38:17,112 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 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, 4, 4, 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] [2024-11-09 19:38:17,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 19:38:17,112 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:38:17,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:38:17,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1346502449, now seen corresponding path program 1 times [2024-11-09 19:38:17,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:38:17,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634845959] [2024-11-09 19:38:17,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:17,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:38:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:17,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2897 backedges. 1363 proven. 0 refuted. 0 times theorem prover too weak. 1534 trivial. 0 not checked. [2024-11-09 19:38:17,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:38:17,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634845959] [2024-11-09 19:38:17,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634845959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:38:17,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:38:17,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 19:38:17,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233695275] [2024-11-09 19:38:17,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:38:17,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 19:38:17,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:38:17,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 19:38:17,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:38:17,698 INFO L87 Difference]: Start difference. First operand 4480 states and 7586 transitions. Second operand has 7 states, 7 states have (on average 48.714285714285715) internal successors, (341), 6 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:18,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:38:18,441 INFO L93 Difference]: Finished difference Result 9009 states and 15225 transitions. [2024-11-09 19:38:18,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 19:38:18,441 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 48.714285714285715) internal successors, (341), 6 states have internal predecessors, (341), 0 states have call successors, (0), 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 946 [2024-11-09 19:38:18,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:38:18,446 INFO L225 Difference]: With dead ends: 9009 [2024-11-09 19:38:18,446 INFO L226 Difference]: Without dead ends: 4659 [2024-11-09 19:38:18,449 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:38:18,449 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 167 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1395 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:38:18,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 34 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1395 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 19:38:18,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4659 states. [2024-11-09 19:38:18,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4659 to 4480. [2024-11-09 19:38:18,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4480 states, 4479 states have (on average 1.681848626925653) internal successors, (7533), 4479 states have internal predecessors, (7533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:18,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4480 states to 4480 states and 7533 transitions. [2024-11-09 19:38:18,481 INFO L78 Accepts]: Start accepts. Automaton has 4480 states and 7533 transitions. Word has length 946 [2024-11-09 19:38:18,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:38:18,482 INFO L471 AbstractCegarLoop]: Abstraction has 4480 states and 7533 transitions. [2024-11-09 19:38:18,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 48.714285714285715) internal successors, (341), 6 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:18,482 INFO L276 IsEmpty]: Start isEmpty. Operand 4480 states and 7533 transitions. [2024-11-09 19:38:18,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1019 [2024-11-09 19:38:18,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:38:18,488 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:38:18,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-09 19:38:18,488 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:38:18,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:38:18,489 INFO L85 PathProgramCache]: Analyzing trace with hash 406956308, now seen corresponding path program 1 times [2024-11-09 19:38:18,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:38:18,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208341089] [2024-11-09 19:38:18,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:18,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:38:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:19,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 926 proven. 0 refuted. 0 times theorem prover too weak. 2497 trivial. 0 not checked. [2024-11-09 19:38:19,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:38:19,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208341089] [2024-11-09 19:38:19,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208341089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:38:19,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:38:19,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:38:19,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410863560] [2024-11-09 19:38:19,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:38:19,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:38:19,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:38:19,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:38:19,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:38:19,059 INFO L87 Difference]: Start difference. First operand 4480 states and 7533 transitions. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:19,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:38:19,570 INFO L93 Difference]: Finished difference Result 8779 states and 14771 transitions. [2024-11-09 19:38:19,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:38:19,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 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 1018 [2024-11-09 19:38:19,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:38:19,574 INFO L225 Difference]: With dead ends: 8779 [2024-11-09 19:38:19,575 INFO L226 Difference]: Without dead ends: 4480 [2024-11-09 19:38:19,577 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:38:19,577 INFO L432 NwaCegarLoop]: 340 mSDtfsCounter, 224 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:38:19,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 347 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 19:38:19,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4480 states. [2024-11-09 19:38:19,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4480 to 4480. [2024-11-09 19:38:19,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4480 states, 4479 states have (on average 1.677606608617995) internal successors, (7514), 4479 states have internal predecessors, (7514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:19,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4480 states to 4480 states and 7514 transitions. [2024-11-09 19:38:19,607 INFO L78 Accepts]: Start accepts. Automaton has 4480 states and 7514 transitions. Word has length 1018 [2024-11-09 19:38:19,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:38:19,608 INFO L471 AbstractCegarLoop]: Abstraction has 4480 states and 7514 transitions. [2024-11-09 19:38:19,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:19,608 INFO L276 IsEmpty]: Start isEmpty. Operand 4480 states and 7514 transitions. [2024-11-09 19:38:19,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1067 [2024-11-09 19:38:19,640 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:38:19,640 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:38:19,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-09 19:38:19,640 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:38:19,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:38:19,641 INFO L85 PathProgramCache]: Analyzing trace with hash -944067964, now seen corresponding path program 1 times [2024-11-09 19:38:19,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:38:19,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503439702] [2024-11-09 19:38:19,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:19,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:38:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:20,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3620 backedges. 2553 proven. 73 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2024-11-09 19:38:20,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:38:20,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503439702] [2024-11-09 19:38:20,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503439702] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:38:20,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385871619] [2024-11-09 19:38:20,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:20,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:38:20,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:38:20,624 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:38:20,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 19:38:20,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:20,835 INFO L255 TraceCheckSpWp]: Trace formula consists of 1311 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 19:38:20,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:38:21,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3620 backedges. 2262 proven. 0 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2024-11-09 19:38:21,189 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:38:21,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385871619] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:38:21,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:38:21,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-09 19:38:21,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245940113] [2024-11-09 19:38:21,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:38:21,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:38:21,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:38:21,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:38:21,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:38:21,191 INFO L87 Difference]: Start difference. First operand 4480 states and 7514 transitions. Second operand has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:22,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:38:22,147 INFO L93 Difference]: Finished difference Result 9316 states and 15631 transitions. [2024-11-09 19:38:22,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:38:22,151 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 0 states have call successors, (0), 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 1066 [2024-11-09 19:38:22,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:38:22,160 INFO L225 Difference]: With dead ends: 9316 [2024-11-09 19:38:22,160 INFO L226 Difference]: Without dead ends: 5017 [2024-11-09 19:38:22,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1070 GetRequests, 1065 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:38:22,167 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 295 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:38:22,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 56 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 19:38:22,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5017 states. [2024-11-09 19:38:22,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5017 to 4838. [2024-11-09 19:38:22,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4838 states, 4837 states have (on average 1.675418647922266) internal successors, (8104), 4837 states have internal predecessors, (8104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:22,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4838 states to 4838 states and 8104 transitions. [2024-11-09 19:38:22,256 INFO L78 Accepts]: Start accepts. Automaton has 4838 states and 8104 transitions. Word has length 1066 [2024-11-09 19:38:22,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:38:22,257 INFO L471 AbstractCegarLoop]: Abstraction has 4838 states and 8104 transitions. [2024-11-09 19:38:22,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:22,257 INFO L276 IsEmpty]: Start isEmpty. Operand 4838 states and 8104 transitions. [2024-11-09 19:38:22,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1068 [2024-11-09 19:38:22,271 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:38:22,272 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2024-11-09 19:38:22,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 19:38:22,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:38:22,473 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:38:22,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:38:22,473 INFO L85 PathProgramCache]: Analyzing trace with hash -52112809, now seen corresponding path program 1 times [2024-11-09 19:38:22,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:38:22,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322947950] [2024-11-09 19:38:22,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:22,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:38:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:23,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3290 backedges. 2007 proven. 7 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2024-11-09 19:38:23,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:38:23,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322947950] [2024-11-09 19:38:23,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322947950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:38:23,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483649931] [2024-11-09 19:38:23,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:23,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:38:23,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:38:23,223 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:38:23,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 19:38:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:23,445 INFO L255 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:38:23,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:38:23,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3290 backedges. 2014 proven. 0 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2024-11-09 19:38:23,614 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:38:23,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483649931] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:38:23,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:38:23,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 19:38:23,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034410263] [2024-11-09 19:38:23,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:38:23,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:38:23,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:38:23,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:38:23,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:38:23,616 INFO L87 Difference]: Start difference. First operand 4838 states and 8104 transitions. Second operand has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:24,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:38:24,140 INFO L93 Difference]: Finished difference Result 10211 states and 17157 transitions. [2024-11-09 19:38:24,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:38:24,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 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 1067 [2024-11-09 19:38:24,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:38:24,145 INFO L225 Difference]: With dead ends: 10211 [2024-11-09 19:38:24,145 INFO L226 Difference]: Without dead ends: 5554 [2024-11-09 19:38:24,148 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1070 GetRequests, 1066 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:38:24,149 INFO L432 NwaCegarLoop]: 336 mSDtfsCounter, 120 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:38:24,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 341 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 19:38:24,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5554 states. [2024-11-09 19:38:24,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5554 to 5196. [2024-11-09 19:38:24,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5196 states, 5195 states have (on average 1.673339749759384) internal successors, (8693), 5195 states have internal predecessors, (8693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:24,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5196 states to 5196 states and 8693 transitions. [2024-11-09 19:38:24,188 INFO L78 Accepts]: Start accepts. Automaton has 5196 states and 8693 transitions. Word has length 1067 [2024-11-09 19:38:24,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:38:24,188 INFO L471 AbstractCegarLoop]: Abstraction has 5196 states and 8693 transitions. [2024-11-09 19:38:24,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:24,189 INFO L276 IsEmpty]: Start isEmpty. Operand 5196 states and 8693 transitions. [2024-11-09 19:38:24,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1198 [2024-11-09 19:38:24,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:38:24,197 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2024-11-09 19:38:24,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 19:38:24,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-09 19:38:24,399 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:38:24,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:38:24,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1528954416, now seen corresponding path program 1 times [2024-11-09 19:38:24,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:38:24,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422024948] [2024-11-09 19:38:24,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:24,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:38:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:25,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4241 backedges. 2338 proven. 392 refuted. 0 times theorem prover too weak. 1511 trivial. 0 not checked. [2024-11-09 19:38:25,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:38:25,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422024948] [2024-11-09 19:38:25,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422024948] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:38:25,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124168] [2024-11-09 19:38:25,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:25,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:38:25,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:38:25,312 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:38:25,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 19:38:25,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:25,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 1443 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 19:38:25,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:38:26,694 INFO L134 CoverageAnalysis]: Checked inductivity of 4241 backedges. 2730 proven. 0 refuted. 0 times theorem prover too weak. 1511 trivial. 0 not checked. [2024-11-09 19:38:26,695 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:38:26,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:38:26,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:38:26,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 19:38:26,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742781175] [2024-11-09 19:38:26,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:38:26,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:38:26,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:38:26,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:38:26,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:38:26,697 INFO L87 Difference]: Start difference. First operand 5196 states and 8693 transitions. Second operand has 4 states, 4 states have (on average 121.75) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:27,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:38:27,511 INFO L93 Difference]: Finished difference Result 10390 states and 17388 transitions. [2024-11-09 19:38:27,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:38:27,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 121.75) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 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 1197 [2024-11-09 19:38:27,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:38:27,516 INFO L225 Difference]: With dead ends: 10390 [2024-11-09 19:38:27,516 INFO L226 Difference]: Without dead ends: 5196 [2024-11-09 19:38:27,520 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1200 GetRequests, 1195 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:38:27,520 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 297 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 1219 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:38:27,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 49 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1219 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 19:38:27,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5196 states. [2024-11-09 19:38:27,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5196 to 5017. [2024-11-09 19:38:27,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5017 states, 5016 states have (on average 1.6728468899521531) internal successors, (8391), 5016 states have internal predecessors, (8391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:27,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5017 states to 5017 states and 8391 transitions. [2024-11-09 19:38:27,558 INFO L78 Accepts]: Start accepts. Automaton has 5017 states and 8391 transitions. Word has length 1197 [2024-11-09 19:38:27,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:38:27,559 INFO L471 AbstractCegarLoop]: Abstraction has 5017 states and 8391 transitions. [2024-11-09 19:38:27,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.75) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:27,559 INFO L276 IsEmpty]: Start isEmpty. Operand 5017 states and 8391 transitions. [2024-11-09 19:38:27,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1227 [2024-11-09 19:38:27,568 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:38:27,569 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 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, 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] [2024-11-09 19:38:27,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 19:38:27,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-09 19:38:27,770 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:38:27,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:38:27,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1345363936, now seen corresponding path program 1 times [2024-11-09 19:38:27,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:38:27,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546824139] [2024-11-09 19:38:27,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:27,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:38:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:28,515 INFO L134 CoverageAnalysis]: Checked inductivity of 4325 backedges. 2313 proven. 95 refuted. 0 times theorem prover too weak. 1917 trivial. 0 not checked. [2024-11-09 19:38:28,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:38:28,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546824139] [2024-11-09 19:38:28,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546824139] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:38:28,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198873193] [2024-11-09 19:38:28,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:28,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:38:28,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:38:28,517 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:38:28,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 19:38:28,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:28,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 1472 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:38:28,769 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:38:28,925 INFO L134 CoverageAnalysis]: Checked inductivity of 4325 backedges. 2408 proven. 0 refuted. 0 times theorem prover too weak. 1917 trivial. 0 not checked. [2024-11-09 19:38:28,925 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:38:28,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198873193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:38:28,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:38:28,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 19:38:28,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737657971] [2024-11-09 19:38:28,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:38:28,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:38:28,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:38:28,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:38:28,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:38:28,928 INFO L87 Difference]: Start difference. First operand 5017 states and 8391 transitions. Second operand has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:29,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:38:29,454 INFO L93 Difference]: Finished difference Result 10211 states and 17077 transitions. [2024-11-09 19:38:29,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:38:29,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 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 1226 [2024-11-09 19:38:29,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:38:29,459 INFO L225 Difference]: With dead ends: 10211 [2024-11-09 19:38:29,460 INFO L226 Difference]: Without dead ends: 5375 [2024-11-09 19:38:29,463 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1229 GetRequests, 1225 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:38:29,464 INFO L432 NwaCegarLoop]: 335 mSDtfsCounter, 117 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:38:29,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 342 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 19:38:29,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5375 states. [2024-11-09 19:38:29,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5375 to 5017. [2024-11-09 19:38:29,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5017 states, 5016 states have (on average 1.6654704944178629) internal successors, (8354), 5016 states have internal predecessors, (8354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:29,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5017 states to 5017 states and 8354 transitions. [2024-11-09 19:38:29,507 INFO L78 Accepts]: Start accepts. Automaton has 5017 states and 8354 transitions. Word has length 1226 [2024-11-09 19:38:29,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:38:29,508 INFO L471 AbstractCegarLoop]: Abstraction has 5017 states and 8354 transitions. [2024-11-09 19:38:29,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:29,508 INFO L276 IsEmpty]: Start isEmpty. Operand 5017 states and 8354 transitions. [2024-11-09 19:38:29,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1478 [2024-11-09 19:38:29,537 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:38:29,537 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:38:29,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 19:38:29,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-09 19:38:29,738 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:38:29,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:38:29,739 INFO L85 PathProgramCache]: Analyzing trace with hash 607347272, now seen corresponding path program 1 times [2024-11-09 19:38:29,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:38:29,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129214495] [2024-11-09 19:38:29,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:29,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:38:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:31,402 INFO L134 CoverageAnalysis]: Checked inductivity of 6313 backedges. 2691 proven. 80 refuted. 0 times theorem prover too weak. 3542 trivial. 0 not checked. [2024-11-09 19:38:31,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:38:31,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129214495] [2024-11-09 19:38:31,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129214495] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:38:31,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385733604] [2024-11-09 19:38:31,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:31,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:38:31,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:38:31,405 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:38:31,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 19:38:31,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:31,804 INFO L255 TraceCheckSpWp]: Trace formula consists of 1762 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 19:38:31,818 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:38:32,555 INFO L134 CoverageAnalysis]: Checked inductivity of 6313 backedges. 1652 proven. 40 refuted. 0 times theorem prover too weak. 4621 trivial. 0 not checked. [2024-11-09 19:38:32,555 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:38:33,082 INFO L134 CoverageAnalysis]: Checked inductivity of 6313 backedges. 1652 proven. 40 refuted. 0 times theorem prover too weak. 4621 trivial. 0 not checked. [2024-11-09 19:38:33,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385733604] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 19:38:33,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 19:38:33,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2024-11-09 19:38:33,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175320126] [2024-11-09 19:38:33,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 19:38:33,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 19:38:33,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:38:33,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 19:38:33,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 19:38:33,086 INFO L87 Difference]: Start difference. First operand 5017 states and 8354 transitions. Second operand has 8 states, 8 states have (on average 122.25) internal successors, (978), 8 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:35,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:38:35,546 INFO L93 Difference]: Finished difference Result 12893 states and 21511 transitions. [2024-11-09 19:38:35,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 19:38:35,547 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 122.25) internal successors, (978), 8 states have internal predecessors, (978), 0 states have call successors, (0), 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 1477 [2024-11-09 19:38:35,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:38:35,548 INFO L225 Difference]: With dead ends: 12893 [2024-11-09 19:38:35,548 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 19:38:35,554 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2961 GetRequests, 2952 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-09 19:38:35,556 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 1883 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 4543 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1883 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 4710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 4543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:38:35,556 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1883 Valid, 69 Invalid, 4710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 4543 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-09 19:38:35,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 19:38:35,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 19:38:35,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:35,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 19:38:35,557 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1477 [2024-11-09 19:38:35,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:38:35,557 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 19:38:35,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 122.25) internal successors, (978), 8 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:38:35,558 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 19:38:35,558 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 19:38:35,560 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 19:38:35,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-09 19:38:35,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-09 19:38:35,765 INFO L407 BasicCegarLoop]: Path program 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] [2024-11-09 19:38:35,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 19:38:40,493 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 19:38:40,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 07:38:40 BoogieIcfgContainer [2024-11-09 19:38:40,510 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 19:38:40,510 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 19:38:40,510 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 19:38:40,510 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 19:38:40,511 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:37:52" (3/4) ... [2024-11-09 19:38:40,513 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-09 19:38:40,537 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-09 19:38:40,538 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-09 19:38:40,539 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-09 19:38:40,544 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 19:38:40,698 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-09 19:38:40,698 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-09 19:38:40,699 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 19:38:40,699 INFO L158 Benchmark]: Toolchain (without parser) took 49966.25ms. Allocated memory was 184.5MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 116.6MB in the beginning and 639.8MB in the end (delta: -523.2MB). Peak memory consumption was 925.2MB. Max. memory is 16.1GB. [2024-11-09 19:38:40,699 INFO L158 Benchmark]: CDTParser took 0.48ms. Allocated memory is still 94.4MB. Free memory is still 48.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 19:38:40,699 INFO L158 Benchmark]: CACSL2BoogieTranslator took 556.80ms. Allocated memory is still 184.5MB. Free memory was 116.1MB in the beginning and 130.8MB in the end (delta: -14.7MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2024-11-09 19:38:40,700 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.60ms. Allocated memory is still 184.5MB. Free memory was 130.8MB in the beginning and 121.1MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-09 19:38:40,700 INFO L158 Benchmark]: Boogie Preprocessor took 76.37ms. Allocated memory is still 184.5MB. Free memory was 121.1MB in the beginning and 109.4MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 19:38:40,700 INFO L158 Benchmark]: IcfgBuilder took 1275.82ms. Allocated memory was 184.5MB in the beginning and 257.9MB in the end (delta: 73.4MB). Free memory was 109.4MB in the beginning and 168.2MB in the end (delta: -58.9MB). Peak memory consumption was 56.7MB. Max. memory is 16.1GB. [2024-11-09 19:38:40,700 INFO L158 Benchmark]: TraceAbstraction took 47790.80ms. Allocated memory was 257.9MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 167.2MB in the beginning and 657.6MB in the end (delta: -490.4MB). Peak memory consumption was 947.7MB. Max. memory is 16.1GB. [2024-11-09 19:38:40,701 INFO L158 Benchmark]: Witness Printer took 188.40ms. Allocated memory is still 1.6GB. Free memory was 657.6MB in the beginning and 639.8MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-09 19:38:40,702 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48ms. Allocated memory is still 94.4MB. Free memory is still 48.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 556.80ms. Allocated memory is still 184.5MB. Free memory was 116.1MB in the beginning and 130.8MB in the end (delta: -14.7MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.60ms. Allocated memory is still 184.5MB. Free memory was 130.8MB in the beginning and 121.1MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.37ms. Allocated memory is still 184.5MB. Free memory was 121.1MB in the beginning and 109.4MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * IcfgBuilder took 1275.82ms. Allocated memory was 184.5MB in the beginning and 257.9MB in the end (delta: 73.4MB). Free memory was 109.4MB in the beginning and 168.2MB in the end (delta: -58.9MB). Peak memory consumption was 56.7MB. Max. memory is 16.1GB. * TraceAbstraction took 47790.80ms. Allocated memory was 257.9MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 167.2MB in the beginning and 657.6MB in the end (delta: -490.4MB). Peak memory consumption was 947.7MB. Max. memory is 16.1GB. * Witness Printer took 188.40ms. Allocated memory is still 1.6GB. Free memory was 657.6MB in the beginning and 639.8MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 137]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 248 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 43.0s, OverallIterations: 25, TraceHistogramMax: 12, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 19.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8333 SdHoareTripleChecker+Valid, 18.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8333 mSDsluCounter, 3580 SdHoareTripleChecker+Invalid, 15.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 249 mSDsCounter, 1408 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 25102 IncrementalHoareTripleChecker+Invalid, 26510 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1408 mSolverCounterUnsat, 3331 mSDtfsCounter, 25102 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11822 GetRequests, 11741 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5196occurred in iteration=22, InterpolantAutomatonStates: 93, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 25 MinimizatonAttempts, 8234 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 15.5s InterpolantComputationTime, 24978 NumberOfCodeBlocks, 24978 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 27188 ConstructedInterpolants, 0 QuantifiedInterpolants, 81875 SizeOfPredicates, 1 NumberOfNonLiveVariables, 11763 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 40 InterpolantComputations, 23 PerfectInterpolantSequences, 75441/77435 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 890]: Location Invariant Derived location invariant: null RESULT: Ultimate proved your program to be correct! [2024-11-09 19:38:40,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE