./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem01_label46.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/Problem01_label46.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 14408b329878540946fe7764dd35bdde7ddb2280d1dd9f9e09220bf70c4bb1b5 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 18:36:57,535 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 18:36:57,643 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 18:36:57,647 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 18:36:57,647 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 18:36:57,670 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 18:36:57,671 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 18:36:57,671 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 18:36:57,671 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 18:36:57,672 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 18:36:57,672 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 18:36:57,672 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 18:36:57,672 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 18:36:57,673 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 18:36:57,673 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 18:36:57,673 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 18:36:57,673 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 18:36:57,674 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 18:36:57,674 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 18:36:57,674 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 18:36:57,678 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 18:36:57,678 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 18:36:57,678 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 18:36:57,678 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 18:36:57,679 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 18:36:57,679 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 18:36:57,679 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 18:36:57,679 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 18:36:57,679 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 18:36:57,679 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 18:36:57,679 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 18:36:57,680 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 18:36:57,680 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:36:57,680 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 18:36:57,680 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 18:36:57,680 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 18:36:57,680 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 18:36:57,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 18:36:57,681 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 18:36:57,681 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 18:36:57,681 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 18:36:57,682 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 18:36:57,682 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14408b329878540946fe7764dd35bdde7ddb2280d1dd9f9e09220bf70c4bb1b5 [2024-11-09 18:36:57,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 18:36:57,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 18:36:57,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 18:36:57,981 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 18:36:57,981 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 18:36:57,983 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem01_label46.c [2024-11-09 18:36:59,370 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 18:36:59,645 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 18:36:59,646 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label46.c [2024-11-09 18:36:59,666 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9222107cb/5fd3cce0e89c42f393b60fdd109604ea/FLAG3da254155 [2024-11-09 18:36:59,683 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9222107cb/5fd3cce0e89c42f393b60fdd109604ea [2024-11-09 18:36:59,686 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 18:36:59,687 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 18:36:59,691 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 18:36:59,691 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 18:36:59,697 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 18:36:59,699 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:36:59" (1/1) ... [2024-11-09 18:36:59,701 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b18573c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:36:59, skipping insertion in model container [2024-11-09 18:36:59,701 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:36:59" (1/1) ... [2024-11-09 18:36:59,752 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 18:37:00,076 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/Problem01_label46.c[19475,19488] [2024-11-09 18:37:00,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:37:00,136 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 18:37:00,254 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/Problem01_label46.c[19475,19488] [2024-11-09 18:37:00,268 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:37:00,291 INFO L204 MainTranslator]: Completed translation [2024-11-09 18:37:00,294 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:37:00 WrapperNode [2024-11-09 18:37:00,295 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 18:37:00,296 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 18:37:00,296 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 18:37:00,296 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 18:37:00,304 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:37:00" (1/1) ... [2024-11-09 18:37:00,329 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:37:00" (1/1) ... [2024-11-09 18:37:00,392 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 657 [2024-11-09 18:37:00,392 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 18:37:00,393 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 18:37:00,393 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 18:37:00,393 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 18:37:00,405 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:37:00" (1/1) ... [2024-11-09 18:37:00,405 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:37:00" (1/1) ... [2024-11-09 18:37:00,409 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:37:00" (1/1) ... [2024-11-09 18:37:00,430 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 18:37:00,430 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:37:00" (1/1) ... [2024-11-09 18:37:00,430 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:37:00" (1/1) ... [2024-11-09 18:37:00,445 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:37:00" (1/1) ... [2024-11-09 18:37:00,448 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:37:00" (1/1) ... [2024-11-09 18:37:00,452 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:37:00" (1/1) ... [2024-11-09 18:37:00,455 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:37:00" (1/1) ... [2024-11-09 18:37:00,462 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 18:37:00,463 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 18:37:00,463 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 18:37:00,463 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 18:37:00,464 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:37:00" (1/1) ... [2024-11-09 18:37:00,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:37:00,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:37:00,508 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 18:37:00,511 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 18:37:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 18:37:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 18:37:00,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 18:37:00,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 18:37:00,652 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 18:37:00,655 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 18:37:01,723 INFO L? ?]: Removed 75 outVars from TransFormulas that were not future-live. [2024-11-09 18:37:01,723 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 18:37:01,751 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 18:37:01,751 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 18:37:01,752 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:37:01 BoogieIcfgContainer [2024-11-09 18:37:01,752 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 18:37:01,754 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 18:37:01,754 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 18:37:01,758 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 18:37:01,758 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:36:59" (1/3) ... [2024-11-09 18:37:01,759 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28345b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:37:01, skipping insertion in model container [2024-11-09 18:37:01,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:37:00" (2/3) ... [2024-11-09 18:37:01,761 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28345b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:37:01, skipping insertion in model container [2024-11-09 18:37:01,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:37:01" (3/3) ... [2024-11-09 18:37:01,763 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label46.c [2024-11-09 18:37:01,782 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 18:37:01,783 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 18:37:01,891 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 18:37:01,902 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;@57d82512, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 18:37:01,902 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 18:37:01,910 INFO L276 IsEmpty]: Start isEmpty. Operand has 201 states, 199 states have (on average 1.6582914572864322) internal successors, (330), 200 states have internal predecessors, (330), 0 states have call successors, (0), 0 states 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 18:37:01,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-09 18:37:01,923 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:37:01,924 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:37:01,925 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:37:01,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:37:01,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1853140951, now seen corresponding path program 1 times [2024-11-09 18:37:01,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:37:01,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48993977] [2024-11-09 18:37:01,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:37:01,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:37:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:37:02,558 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 18:37:02,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:37:02,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48993977] [2024-11-09 18:37:02,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48993977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:37:02,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:37:02,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:37:02,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308566203] [2024-11-09 18:37:02,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:37:02,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:37:02,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:37:02,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:37:02,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:37:02,608 INFO L87 Difference]: Start difference. First operand has 201 states, 199 states have (on average 1.6582914572864322) internal successors, (330), 200 states have internal predecessors, (330), 0 states have call successors, (0), 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 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:37:03,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:37:03,343 INFO L93 Difference]: Finished difference Result 534 states and 921 transitions. [2024-11-09 18:37:03,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:37:03,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2024-11-09 18:37:03,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:37:03,359 INFO L225 Difference]: With dead ends: 534 [2024-11-09 18:37:03,360 INFO L226 Difference]: Without dead ends: 269 [2024-11-09 18:37:03,365 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 18:37:03,370 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 83 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 18:37:03,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 48 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 18:37:03,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-11-09 18:37:03,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2024-11-09 18:37:03,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.4738805970149254) internal successors, (395), 268 states have internal predecessors, (395), 0 states have call successors, (0), 0 states 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 18:37:03,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 395 transitions. [2024-11-09 18:37:03,438 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 395 transitions. Word has length 114 [2024-11-09 18:37:03,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:37:03,439 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 395 transitions. [2024-11-09 18:37:03,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:37:03,440 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 395 transitions. [2024-11-09 18:37:03,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-09 18:37:03,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:37:03,443 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:37:03,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 18:37:03,443 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:37:03,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:37:03,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1059238801, now seen corresponding path program 1 times [2024-11-09 18:37:03,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:37:03,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498237738] [2024-11-09 18:37:03,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:37:03,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:37:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:37:03,612 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:37:03,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:37:03,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498237738] [2024-11-09 18:37:03,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498237738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:37:03,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:37:03,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:37:03,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096066990] [2024-11-09 18:37:03,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:37:03,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:37:03,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:37:03,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:37:03,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:37:03,618 INFO L87 Difference]: Start difference. First operand 269 states and 395 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 18:37:04,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:37:04,024 INFO L93 Difference]: Finished difference Result 800 states and 1179 transitions. [2024-11-09 18:37:04,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:37:04,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2024-11-09 18:37:04,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:37:04,031 INFO L225 Difference]: With dead ends: 800 [2024-11-09 18:37:04,031 INFO L226 Difference]: Without dead ends: 533 [2024-11-09 18:37:04,033 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 18:37:04,034 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 173 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:37:04,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 32 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 18:37:04,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2024-11-09 18:37:04,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 533. [2024-11-09 18:37:04,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 532 states have (on average 1.4097744360902256) internal successors, (750), 532 states have internal predecessors, (750), 0 states have call successors, (0), 0 states 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 18:37:04,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 750 transitions. [2024-11-09 18:37:04,083 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 750 transitions. Word has length 120 [2024-11-09 18:37:04,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:37:04,083 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 750 transitions. [2024-11-09 18:37:04,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 18:37:04,084 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 750 transitions. [2024-11-09 18:37:04,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-09 18:37:04,087 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:37:04,087 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:37:04,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 18:37:04,088 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:37:04,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:37:04,089 INFO L85 PathProgramCache]: Analyzing trace with hash -847748616, now seen corresponding path program 1 times [2024-11-09 18:37:04,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:37:04,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031727264] [2024-11-09 18:37:04,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:37:04,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:37:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:37:04,373 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:37:04,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:37:04,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031727264] [2024-11-09 18:37:04,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031727264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:37:04,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:37:04,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:37:04,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433792314] [2024-11-09 18:37:04,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:37:04,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:37:04,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:37:04,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:37:04,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:37:04,381 INFO L87 Difference]: Start difference. First operand 533 states and 750 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 18:37:04,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:37:04,853 INFO L93 Difference]: Finished difference Result 1460 states and 2045 transitions. [2024-11-09 18:37:04,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:37:04,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2024-11-09 18:37:04,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:37:04,857 INFO L225 Difference]: With dead ends: 1460 [2024-11-09 18:37:04,858 INFO L226 Difference]: Without dead ends: 929 [2024-11-09 18:37:04,862 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 18:37:04,864 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 122 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:37:04,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 60 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 18:37:04,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2024-11-09 18:37:04,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 797. [2024-11-09 18:37:04,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 796 states have (on average 1.3190954773869348) internal successors, (1050), 796 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states 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 18:37:04,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1050 transitions. [2024-11-09 18:37:04,903 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1050 transitions. Word has length 130 [2024-11-09 18:37:04,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:37:04,903 INFO L471 AbstractCegarLoop]: Abstraction has 797 states and 1050 transitions. [2024-11-09 18:37:04,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 18:37:04,904 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1050 transitions. [2024-11-09 18:37:04,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-09 18:37:04,907 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:37:04,907 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:37:04,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 18:37:04,908 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:37:04,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:37:04,908 INFO L85 PathProgramCache]: Analyzing trace with hash 298417276, now seen corresponding path program 1 times [2024-11-09 18:37:04,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:37:04,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152362385] [2024-11-09 18:37:04,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:37:04,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:37:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:37:05,147 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:37:05,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:37:05,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152362385] [2024-11-09 18:37:05,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152362385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:37:05,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:37:05,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:37:05,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824314513] [2024-11-09 18:37:05,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:37:05,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:37:05,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:37:05,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:37:05,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:37:05,150 INFO L87 Difference]: Start difference. First operand 797 states and 1050 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 18:37:05,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:37:05,532 INFO L93 Difference]: Finished difference Result 1856 states and 2453 transitions. [2024-11-09 18:37:05,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:37:05,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 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 132 [2024-11-09 18:37:05,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:37:05,536 INFO L225 Difference]: With dead ends: 1856 [2024-11-09 18:37:05,537 INFO L226 Difference]: Without dead ends: 1061 [2024-11-09 18:37:05,538 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 18:37:05,539 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 127 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:37:05,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 78 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 18:37:05,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2024-11-09 18:37:05,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 929. [2024-11-09 18:37:05,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 928 states have (on average 1.2866379310344827) internal successors, (1194), 928 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states 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 18:37:05,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1194 transitions. [2024-11-09 18:37:05,570 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1194 transitions. Word has length 132 [2024-11-09 18:37:05,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:37:05,570 INFO L471 AbstractCegarLoop]: Abstraction has 929 states and 1194 transitions. [2024-11-09 18:37:05,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 18:37:05,571 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1194 transitions. [2024-11-09 18:37:05,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-09 18:37:05,574 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:37:05,574 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:37:05,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 18:37:05,575 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:37:05,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:37:05,576 INFO L85 PathProgramCache]: Analyzing trace with hash -737302809, now seen corresponding path program 1 times [2024-11-09 18:37:05,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:37:05,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723630044] [2024-11-09 18:37:05,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:37:05,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:37:05,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:37:05,778 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:37:05,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:37:05,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723630044] [2024-11-09 18:37:05,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723630044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:37:05,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:37:05,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:37:05,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318572341] [2024-11-09 18:37:05,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:37:05,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:37:05,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:37:05,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:37:05,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:37:05,783 INFO L87 Difference]: Start difference. First operand 929 states and 1194 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states 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 18:37:06,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:37:06,395 INFO L93 Difference]: Finished difference Result 2384 states and 3071 transitions. [2024-11-09 18:37:06,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:37:06,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 137 [2024-11-09 18:37:06,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:37:06,400 INFO L225 Difference]: With dead ends: 2384 [2024-11-09 18:37:06,400 INFO L226 Difference]: Without dead ends: 1457 [2024-11-09 18:37:06,402 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 18:37:06,405 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 388 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:37:06,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 58 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 18:37:06,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2024-11-09 18:37:06,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1325. [2024-11-09 18:37:06,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1325 states, 1324 states have (on average 1.2643504531722054) internal successors, (1674), 1324 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states 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 18:37:06,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 1674 transitions. [2024-11-09 18:37:06,434 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 1674 transitions. Word has length 137 [2024-11-09 18:37:06,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:37:06,435 INFO L471 AbstractCegarLoop]: Abstraction has 1325 states and 1674 transitions. [2024-11-09 18:37:06,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states 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 18:37:06,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 1674 transitions. [2024-11-09 18:37:06,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-09 18:37:06,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:37:06,440 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:37:06,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 18:37:06,440 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:37:06,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:37:06,442 INFO L85 PathProgramCache]: Analyzing trace with hash -636647515, now seen corresponding path program 1 times [2024-11-09 18:37:06,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:37:06,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448402983] [2024-11-09 18:37:06,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:37:06,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:37:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:37:06,700 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:37:06,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:37:06,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448402983] [2024-11-09 18:37:06,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448402983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:37:06,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:37:06,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 18:37:06,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007696810] [2024-11-09 18:37:06,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:37:06,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:37:06,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:37:06,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:37:06,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:37:06,704 INFO L87 Difference]: Start difference. First operand 1325 states and 1674 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states 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 18:37:07,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:37:07,334 INFO L93 Difference]: Finished difference Result 3572 states and 4420 transitions. [2024-11-09 18:37:07,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:37:07,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 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 167 [2024-11-09 18:37:07,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:37:07,342 INFO L225 Difference]: With dead ends: 3572 [2024-11-09 18:37:07,344 INFO L226 Difference]: Without dead ends: 2117 [2024-11-09 18:37:07,346 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 18:37:07,347 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 248 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:37:07,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 45 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 18:37:07,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2117 states. [2024-11-09 18:37:07,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2117 to 1721. [2024-11-09 18:37:07,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1721 states, 1720 states have (on average 1.2186046511627906) internal successors, (2096), 1720 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states 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 18:37:07,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1721 states to 1721 states and 2096 transitions. [2024-11-09 18:37:07,420 INFO L78 Accepts]: Start accepts. Automaton has 1721 states and 2096 transitions. Word has length 167 [2024-11-09 18:37:07,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:37:07,420 INFO L471 AbstractCegarLoop]: Abstraction has 1721 states and 2096 transitions. [2024-11-09 18:37:07,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states 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 18:37:07,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1721 states and 2096 transitions. [2024-11-09 18:37:07,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-09 18:37:07,425 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:37:07,425 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:37:07,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 18:37:07,426 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:37:07,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:37:07,426 INFO L85 PathProgramCache]: Analyzing trace with hash -818820269, now seen corresponding path program 1 times [2024-11-09 18:37:07,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:37:07,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486144158] [2024-11-09 18:37:07,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:37:07,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:37:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:37:08,031 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 83 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:37:08,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:37:08,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486144158] [2024-11-09 18:37:08,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486144158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:37:08,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639151814] [2024-11-09 18:37:08,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:37:08,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:37:08,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:37:08,036 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 18:37:08,039 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 18:37:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:37:08,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:37:08,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:37:08,428 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 18:37:08,428 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:37:08,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639151814] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:37:08,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:37:08,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-09 18:37:08,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419961797] [2024-11-09 18:37:08,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:37:08,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:37:08,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:37:08,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:37:08,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:37:08,430 INFO L87 Difference]: Start difference. First operand 1721 states and 2096 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 18:37:08,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:37:08,829 INFO L93 Difference]: Finished difference Result 2384 states and 2853 transitions. [2024-11-09 18:37:08,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:37:08,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 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 184 [2024-11-09 18:37:08,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:37:08,839 INFO L225 Difference]: With dead ends: 2384 [2024-11-09 18:37:08,839 INFO L226 Difference]: Without dead ends: 2381 [2024-11-09 18:37:08,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:37:08,843 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 44 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:37:08,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 34 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 18:37:08,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2024-11-09 18:37:08,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 1721. [2024-11-09 18:37:08,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1721 states, 1720 states have (on average 1.2180232558139534) internal successors, (2095), 1720 states have internal predecessors, (2095), 0 states have call successors, (0), 0 states 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 18:37:08,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1721 states to 1721 states and 2095 transitions. [2024-11-09 18:37:08,889 INFO L78 Accepts]: Start accepts. Automaton has 1721 states and 2095 transitions. Word has length 184 [2024-11-09 18:37:08,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:37:08,890 INFO L471 AbstractCegarLoop]: Abstraction has 1721 states and 2095 transitions. [2024-11-09 18:37:08,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 18:37:08,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1721 states and 2095 transitions. [2024-11-09 18:37:08,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-11-09 18:37:08,896 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:37:08,896 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:37:08,916 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 18:37:09,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:37:09,101 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:37:09,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:37:09,102 INFO L85 PathProgramCache]: Analyzing trace with hash -2020682440, now seen corresponding path program 1 times [2024-11-09 18:37:09,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:37:09,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335506653] [2024-11-09 18:37:09,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:37:09,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:37:09,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:37:09,657 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 145 proven. 16 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-09 18:37:09,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:37:09,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335506653] [2024-11-09 18:37:09,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335506653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:37:09,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367279922] [2024-11-09 18:37:09,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:37:09,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:37:09,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:37:09,662 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 18:37:09,679 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 18:37:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:37:09,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:37:09,814 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:37:10,000 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-09 18:37:10,001 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:37:10,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367279922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:37:10,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:37:10,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-09 18:37:10,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432300360] [2024-11-09 18:37:10,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:37:10,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:37:10,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:37:10,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:37:10,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:37:10,003 INFO L87 Difference]: Start difference. First operand 1721 states and 2095 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states 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 18:37:10,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:37:10,409 INFO L93 Difference]: Finished difference Result 3437 states and 4186 transitions. [2024-11-09 18:37:10,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:37:10,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 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 224 [2024-11-09 18:37:10,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:37:10,410 INFO L225 Difference]: With dead ends: 3437 [2024-11-09 18:37:10,410 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 18:37:10,414 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:37:10,415 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 26 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:37:10,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 192 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 18:37:10,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 18:37:10,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 18:37:10,416 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 18:37:10,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 18:37:10,416 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 224 [2024-11-09 18:37:10,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:37:10,417 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 18:37:10,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states 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 18:37:10,417 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 18:37:10,417 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 18:37:10,420 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 18:37:10,441 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 18:37:10,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-09 18:37:10,626 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:37:10,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 18:37:10,763 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 18:37:10,776 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 06:37:10 BoogieIcfgContainer [2024-11-09 18:37:10,776 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 18:37:10,777 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 18:37:10,777 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 18:37:10,777 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 18:37:10,778 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:37:01" (3/4) ... [2024-11-09 18:37:10,780 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-09 18:37:10,795 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-09 18:37:10,796 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-09 18:37:10,797 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-09 18:37:10,798 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 18:37:10,948 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-09 18:37:10,949 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-09 18:37:10,949 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 18:37:10,949 INFO L158 Benchmark]: Toolchain (without parser) took 11261.86ms. Allocated memory was 190.8MB in the beginning and 360.7MB in the end (delta: 169.9MB). Free memory was 118.8MB in the beginning and 190.5MB in the end (delta: -71.7MB). Peak memory consumption was 100.7MB. Max. memory is 16.1GB. [2024-11-09 18:37:10,949 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 130.0MB. Free memory was 92.3MB in the beginning and 92.0MB in the end (delta: 272.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 18:37:10,950 INFO L158 Benchmark]: CACSL2BoogieTranslator took 604.23ms. Allocated memory is still 190.8MB. Free memory was 118.8MB in the beginning and 88.9MB in the end (delta: 29.8MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-11-09 18:37:10,950 INFO L158 Benchmark]: Boogie Procedure Inliner took 96.81ms. Allocated memory is still 190.8MB. Free memory was 88.9MB in the beginning and 83.1MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-09 18:37:10,950 INFO L158 Benchmark]: Boogie Preprocessor took 69.19ms. Allocated memory is still 190.8MB. Free memory was 83.1MB in the beginning and 78.4MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 18:37:10,950 INFO L158 Benchmark]: IcfgBuilder took 1289.45ms. Allocated memory is still 190.8MB. Free memory was 78.4MB in the beginning and 83.9MB in the end (delta: -5.5MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. [2024-11-09 18:37:10,950 INFO L158 Benchmark]: TraceAbstraction took 9022.28ms. Allocated memory was 190.8MB in the beginning and 360.7MB in the end (delta: 169.9MB). Free memory was 82.8MB in the beginning and 203.1MB in the end (delta: -120.2MB). Peak memory consumption was 51.7MB. Max. memory is 16.1GB. [2024-11-09 18:37:10,951 INFO L158 Benchmark]: Witness Printer took 171.61ms. Allocated memory is still 360.7MB. Free memory was 203.1MB in the beginning and 190.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 18:37:10,952 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 130.0MB. Free memory was 92.3MB in the beginning and 92.0MB in the end (delta: 272.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 604.23ms. Allocated memory is still 190.8MB. Free memory was 118.8MB in the beginning and 88.9MB in the end (delta: 29.8MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 96.81ms. Allocated memory is still 190.8MB. Free memory was 88.9MB in the beginning and 83.1MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.19ms. Allocated memory is still 190.8MB. Free memory was 83.1MB in the beginning and 78.4MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * IcfgBuilder took 1289.45ms. Allocated memory is still 190.8MB. Free memory was 78.4MB in the beginning and 83.9MB in the end (delta: -5.5MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. * TraceAbstraction took 9022.28ms. Allocated memory was 190.8MB in the beginning and 360.7MB in the end (delta: 169.9MB). Free memory was 82.8MB in the beginning and 203.1MB in the end (delta: -120.2MB). Peak memory consumption was 51.7MB. Max. memory is 16.1GB. * Witness Printer took 171.61ms. Allocated memory is still 360.7MB. Free memory was 203.1MB in the beginning and 190.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. 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: 522]: 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, 201 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.8s, OverallIterations: 8, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1211 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1211 mSDsluCounter, 547 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 67 mSDsCounter, 611 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3177 IncrementalHoareTripleChecker+Invalid, 3788 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 611 mSolverCounterUnsat, 480 mSDtfsCounter, 3177 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 431 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1721occurred in iteration=6, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 1452 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 1616 NumberOfCodeBlocks, 1616 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1606 ConstructedInterpolants, 0 QuantifiedInterpolants, 4774 SizeOfPredicates, 0 NumberOfNonLiveVariables, 798 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 798/830 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: 593]: Location Invariant Derived location invariant: null RESULT: Ultimate proved your program to be correct! [2024-11-09 18:37:11,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE