./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_allDiff2_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc 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/array-examples/standard_allDiff2_ground.i -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 45c2395b28f523380bfcff26ce2efb02406d69c6cc122ac9297e3f35ef9c7306 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 08:49:29,992 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 08:49:30,060 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 08:49:30,063 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 08:49:30,064 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 08:49:30,079 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 08:49:30,079 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 08:49:30,080 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 08:49:30,080 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 08:49:30,080 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 08:49:30,080 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 08:49:30,081 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 08:49:30,081 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 08:49:30,081 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 08:49:30,082 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 08:49:30,082 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 08:49:30,082 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 08:49:30,082 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 08:49:30,083 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 08:49:30,083 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 08:49:30,083 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 08:49:30,083 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 08:49:30,084 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 08:49:30,084 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 08:49:30,084 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 08:49:30,084 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 08:49:30,084 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 08:49:30,085 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 08:49:30,085 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 08:49:30,085 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 08:49:30,085 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 08:49:30,086 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 08:49:30,086 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 08:49:30,086 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 08:49:30,086 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 08:49:30,086 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 08:49:30,087 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 08:49:30,087 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 08:49:30,087 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 08:49:30,087 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 08:49:30,087 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 08:49:30,088 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 08:49:30,088 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45c2395b28f523380bfcff26ce2efb02406d69c6cc122ac9297e3f35ef9c7306 [2024-11-18 08:49:30,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 08:49:30,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 08:49:30,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 08:49:30,338 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 08:49:30,338 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 08:49:30,339 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_allDiff2_ground.i [2024-11-18 08:49:31,662 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 08:49:31,841 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 08:49:31,842 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_allDiff2_ground.i [2024-11-18 08:49:31,851 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c71bc6b5/05c2b3bc1ebe4923bb3f8277a7f072ad/FLAGf1b0d9093 [2024-11-18 08:49:32,233 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c71bc6b5/05c2b3bc1ebe4923bb3f8277a7f072ad [2024-11-18 08:49:32,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 08:49:32,238 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 08:49:32,240 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 08:49:32,240 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 08:49:32,245 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 08:49:32,246 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:49:32" (1/1) ... [2024-11-18 08:49:32,248 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fa65034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32, skipping insertion in model container [2024-11-18 08:49:32,248 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:49:32" (1/1) ... [2024-11-18 08:49:32,273 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 08:49:32,458 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/array-examples/standard_allDiff2_ground.i[817,830] [2024-11-18 08:49:32,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 08:49:32,538 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 08:49:32,557 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/array-examples/standard_allDiff2_ground.i[817,830] [2024-11-18 08:49:32,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 08:49:32,581 INFO L204 MainTranslator]: Completed translation [2024-11-18 08:49:32,582 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32 WrapperNode [2024-11-18 08:49:32,582 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 08:49:32,583 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 08:49:32,583 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 08:49:32,584 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 08:49:32,590 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (1/1) ... [2024-11-18 08:49:32,597 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (1/1) ... [2024-11-18 08:49:32,614 INFO L138 Inliner]: procedures = 16, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 85 [2024-11-18 08:49:32,615 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 08:49:32,616 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 08:49:32,616 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 08:49:32,616 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 08:49:32,624 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (1/1) ... [2024-11-18 08:49:32,625 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (1/1) ... [2024-11-18 08:49:32,626 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (1/1) ... [2024-11-18 08:49:32,642 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-18 08:49:32,642 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (1/1) ... [2024-11-18 08:49:32,643 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (1/1) ... [2024-11-18 08:49:32,646 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (1/1) ... [2024-11-18 08:49:32,649 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (1/1) ... [2024-11-18 08:49:32,650 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (1/1) ... [2024-11-18 08:49:32,651 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (1/1) ... [2024-11-18 08:49:32,652 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 08:49:32,653 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 08:49:32,653 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 08:49:32,653 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 08:49:32,654 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (1/1) ... [2024-11-18 08:49:32,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 08:49:32,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:49:32,691 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) [2024-11-18 08:49:32,694 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 [2024-11-18 08:49:32,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 08:49:32,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 08:49:32,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 08:49:32,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 08:49:32,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 08:49:32,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 08:49:32,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 08:49:32,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 08:49:32,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 08:49:32,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 08:49:32,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 08:49:32,806 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 08:49:32,810 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 08:49:32,952 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-18 08:49:32,954 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 08:49:32,965 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 08:49:32,967 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-18 08:49:32,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:49:32 BoogieIcfgContainer [2024-11-18 08:49:32,968 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 08:49:32,969 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 08:49:32,970 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 08:49:32,973 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 08:49:32,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:49:32" (1/3) ... [2024-11-18 08:49:32,974 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3654ddd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:49:32, skipping insertion in model container [2024-11-18 08:49:32,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (2/3) ... [2024-11-18 08:49:32,975 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3654ddd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:49:32, skipping insertion in model container [2024-11-18 08:49:32,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:49:32" (3/3) ... [2024-11-18 08:49:32,976 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_allDiff2_ground.i [2024-11-18 08:49:32,991 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 08:49:32,992 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 08:49:33,043 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 08:49:33,048 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;@3d48ad75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 08:49:33,048 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 08:49:33,052 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.608695652173913) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:49:33,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-18 08:49:33,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:49:33,058 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:49:33,059 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:49:33,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:49:33,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1934610002, now seen corresponding path program 1 times [2024-11-18 08:49:33,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:49:33,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600282959] [2024-11-18 08:49:33,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:49:33,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:49:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:49:33,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 08:49:33,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:49:33,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600282959] [2024-11-18 08:49:33,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600282959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 08:49:33,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 08:49:33,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 08:49:33,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245261131] [2024-11-18 08:49:33,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 08:49:33,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 08:49:33,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:49:33,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 08:49:33,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 08:49:33,263 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.608695652173913) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 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 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:49:33,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:49:33,289 INFO L93 Difference]: Finished difference Result 48 states and 72 transitions. [2024-11-18 08:49:33,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 08:49:33,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2024-11-18 08:49:33,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:49:33,296 INFO L225 Difference]: With dead ends: 48 [2024-11-18 08:49:33,297 INFO L226 Difference]: Without dead ends: 22 [2024-11-18 08:49:33,300 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 08:49:33,304 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 1 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 08:49:33,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 50 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 08:49:33,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-18 08:49:33,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2024-11-18 08:49:33,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:49:33,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2024-11-18 08:49:33,329 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 10 [2024-11-18 08:49:33,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:49:33,329 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2024-11-18 08:49:33,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:49:33,329 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2024-11-18 08:49:33,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-18 08:49:33,330 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:49:33,330 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:49:33,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 08:49:33,330 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:49:33,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:49:33,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1279412436, now seen corresponding path program 1 times [2024-11-18 08:49:33,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:49:33,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519207865] [2024-11-18 08:49:33,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:49:33,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:49:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:49:33,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 08:49:33,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:49:33,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519207865] [2024-11-18 08:49:33,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519207865] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:49:33,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094528706] [2024-11-18 08:49:33,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:49:33,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:33,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:49:33,417 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) [2024-11-18 08:49:33,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 08:49:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:49:33,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 08:49:33,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:49:33,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 08:49:33,522 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 08:49:33,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094528706] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 08:49:33,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 08:49:33,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-11-18 08:49:33,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537770248] [2024-11-18 08:49:33,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 08:49:33,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 08:49:33,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:49:33,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 08:49:33,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 08:49:33,525 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:49:33,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:49:33,562 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2024-11-18 08:49:33,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 08:49:33,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2024-11-18 08:49:33,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:49:33,563 INFO L225 Difference]: With dead ends: 37 [2024-11-18 08:49:33,563 INFO L226 Difference]: Without dead ends: 28 [2024-11-18 08:49:33,564 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 08:49:33,565 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 08:49:33,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 50 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 08:49:33,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-18 08:49:33,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2024-11-18 08:49:33,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:49:33,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-11-18 08:49:33,573 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 12 [2024-11-18 08:49:33,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:49:33,573 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-11-18 08:49:33,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:49:33,574 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-11-18 08:49:33,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-18 08:49:33,574 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:49:33,574 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:49:33,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 08:49:33,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:33,779 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:49:33,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:49:33,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1079055556, now seen corresponding path program 1 times [2024-11-18 08:49:33,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:49:33,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325809009] [2024-11-18 08:49:33,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:49:33,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:49:33,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:49:33,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 08:49:33,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:49:33,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325809009] [2024-11-18 08:49:33,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325809009] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:49:33,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699535771] [2024-11-18 08:49:33,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:49:33,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:33,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:49:33,899 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) [2024-11-18 08:49:33,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 08:49:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:49:33,960 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 08:49:33,961 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:49:33,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 08:49:33,982 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:49:34,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 08:49:34,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699535771] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:49:34,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:49:34,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-18 08:49:34,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553997342] [2024-11-18 08:49:34,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:49:34,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 08:49:34,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:49:34,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 08:49:34,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 08:49:34,007 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:49:34,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:49:34,061 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2024-11-18 08:49:34,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 08:49:34,061 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 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 16 [2024-11-18 08:49:34,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:49:34,062 INFO L225 Difference]: With dead ends: 57 [2024-11-18 08:49:34,062 INFO L226 Difference]: Without dead ends: 40 [2024-11-18 08:49:34,062 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 08:49:34,063 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 30 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 08:49:34,063 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 56 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 08:49:34,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-18 08:49:34,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 28. [2024-11-18 08:49:34,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:49:34,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2024-11-18 08:49:34,068 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 16 [2024-11-18 08:49:34,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:49:34,068 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2024-11-18 08:49:34,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:49:34,068 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2024-11-18 08:49:34,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-18 08:49:34,069 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:49:34,069 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:49:34,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 08:49:34,273 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,SelfDestructingSolverStorable2 [2024-11-18 08:49:34,274 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:49:34,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:49:34,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1252365506, now seen corresponding path program 2 times [2024-11-18 08:49:34,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:49:34,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808083269] [2024-11-18 08:49:34,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 08:49:34,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:49:34,297 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 08:49:34,297 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:49:34,379 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 08:49:34,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:49:34,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808083269] [2024-11-18 08:49:34,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808083269] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:49:34,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87372405] [2024-11-18 08:49:34,380 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 08:49:34,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:34,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:49:34,384 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:49:34,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 08:49:34,437 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 08:49:34,438 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:49:34,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 08:49:34,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:49:34,489 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 08:49:34,489 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:49:34,559 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 08:49:34,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87372405] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:49:34,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:49:34,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-11-18 08:49:34,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413741939] [2024-11-18 08:49:34,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:49:34,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 08:49:34,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:49:34,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 08:49:34,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=129, Unknown=0, NotChecked=0, Total=210 [2024-11-18 08:49:34,562 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:49:34,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:49:34,719 INFO L93 Difference]: Finished difference Result 112 states and 154 transitions. [2024-11-18 08:49:34,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 08:49:34,720 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-18 08:49:34,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:49:34,721 INFO L225 Difference]: With dead ends: 112 [2024-11-18 08:49:34,721 INFO L226 Difference]: Without dead ends: 91 [2024-11-18 08:49:34,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=119, Invalid=187, Unknown=0, NotChecked=0, Total=306 [2024-11-18 08:49:34,722 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 176 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 08:49:34,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 122 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 08:49:34,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-18 08:49:34,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2024-11-18 08:49:34,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.25) internal successors, (110), 88 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:49:34,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 110 transitions. [2024-11-18 08:49:34,730 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 110 transitions. Word has length 22 [2024-11-18 08:49:34,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:49:34,730 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 110 transitions. [2024-11-18 08:49:34,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:49:34,730 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 110 transitions. [2024-11-18 08:49:34,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 08:49:34,731 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:49:34,731 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:49:34,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 08:49:34,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:34,936 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:49:34,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:49:34,937 INFO L85 PathProgramCache]: Analyzing trace with hash -44265316, now seen corresponding path program 1 times [2024-11-18 08:49:34,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:49:34,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311785235] [2024-11-18 08:49:34,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:49:34,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:49:34,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:49:35,281 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-18 08:49:35,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:49:35,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311785235] [2024-11-18 08:49:35,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311785235] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:49:35,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811169468] [2024-11-18 08:49:35,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 08:49:35,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:35,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:49:35,284 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:49:35,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 08:49:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:49:35,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 08:49:35,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:49:35,416 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-18 08:49:35,418 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:49:35,637 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-18 08:49:35,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811169468] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:49:35,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:49:35,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-18 08:49:35,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441933361] [2024-11-18 08:49:35,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:49:35,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-18 08:49:35,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:49:35,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-18 08:49:35,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-18 08:49:35,640 INFO L87 Difference]: Start difference. First operand 89 states and 110 transitions. Second operand has 25 states, 25 states have (on average 2.48) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:49:35,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:49:35,851 INFO L93 Difference]: Finished difference Result 251 states and 340 transitions. [2024-11-18 08:49:35,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-18 08:49:35,852 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 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 69 [2024-11-18 08:49:35,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:49:35,854 INFO L225 Difference]: With dead ends: 251 [2024-11-18 08:49:35,854 INFO L226 Difference]: Without dead ends: 185 [2024-11-18 08:49:35,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-18 08:49:35,855 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 380 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 08:49:35,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 168 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 08:49:35,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-18 08:49:35,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 113. [2024-11-18 08:49:35,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.1964285714285714) internal successors, (134), 112 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:49:35,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 134 transitions. [2024-11-18 08:49:35,865 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 134 transitions. Word has length 69 [2024-11-18 08:49:35,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:49:35,866 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 134 transitions. [2024-11-18 08:49:35,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:49:35,866 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 134 transitions. [2024-11-18 08:49:35,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-18 08:49:35,868 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:49:35,868 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:49:35,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 08:49:36,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:36,073 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:49:36,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:49:36,073 INFO L85 PathProgramCache]: Analyzing trace with hash 2113770628, now seen corresponding path program 2 times [2024-11-18 08:49:36,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:49:36,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919516638] [2024-11-18 08:49:36,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 08:49:36,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:49:36,121 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 08:49:36,121 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:49:36,687 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-18 08:49:36,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:49:36,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919516638] [2024-11-18 08:49:36,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919516638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:49:36,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739902095] [2024-11-18 08:49:36,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 08:49:36,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:36,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:49:36,691 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:49:36,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 08:49:36,785 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 08:49:36,785 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:49:36,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-18 08:49:36,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:49:36,884 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-18 08:49:36,884 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:49:37,622 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-18 08:49:37,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739902095] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:49:37,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:49:37,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-18 08:49:37,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443602802] [2024-11-18 08:49:37,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:49:37,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-18 08:49:37,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:49:37,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-18 08:49:37,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-18 08:49:37,627 INFO L87 Difference]: Start difference. First operand 113 states and 134 transitions. Second operand has 49 states, 49 states have (on average 2.2448979591836733) internal successors, (110), 49 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:49:38,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:49:38,140 INFO L93 Difference]: Finished difference Result 443 states and 616 transitions. [2024-11-18 08:49:38,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-18 08:49:38,141 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.2448979591836733) internal successors, (110), 49 states have internal predecessors, (110), 0 states have call successors, (0), 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 93 [2024-11-18 08:49:38,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:49:38,143 INFO L225 Difference]: With dead ends: 443 [2024-11-18 08:49:38,143 INFO L226 Difference]: Without dead ends: 377 [2024-11-18 08:49:38,143 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-18 08:49:38,144 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 954 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 08:49:38,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [954 Valid, 299 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 08:49:38,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-11-18 08:49:38,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 161. [2024-11-18 08:49:38,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.1375) internal successors, (182), 160 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:49:38,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 182 transitions. [2024-11-18 08:49:38,156 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 182 transitions. Word has length 93 [2024-11-18 08:49:38,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:49:38,156 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 182 transitions. [2024-11-18 08:49:38,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.2448979591836733) internal successors, (110), 49 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:49:38,157 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 182 transitions. [2024-11-18 08:49:38,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-18 08:49:38,158 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:49:38,158 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:49:38,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 08:49:38,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:38,363 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:49:38,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:49:38,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1416492116, now seen corresponding path program 3 times [2024-11-18 08:49:38,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:49:38,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342848192] [2024-11-18 08:49:38,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 08:49:38,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:49:38,389 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 08:49:38,389 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:49:38,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 08:49:38,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:49:38,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342848192] [2024-11-18 08:49:38,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342848192] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 08:49:38,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 08:49:38,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 08:49:38,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542540637] [2024-11-18 08:49:38,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 08:49:38,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 08:49:38,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:49:38,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 08:49:38,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 08:49:38,428 INFO L87 Difference]: Start difference. First operand 161 states and 182 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:49:38,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:49:38,476 INFO L93 Difference]: Finished difference Result 266 states and 328 transitions. [2024-11-18 08:49:38,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 08:49:38,477 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 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 141 [2024-11-18 08:49:38,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:49:38,478 INFO L225 Difference]: With dead ends: 266 [2024-11-18 08:49:38,478 INFO L226 Difference]: Without dead ends: 257 [2024-11-18 08:49:38,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-18 08:49:38,479 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 16 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 08:49:38,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 50 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 08:49:38,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-11-18 08:49:38,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 162. [2024-11-18 08:49:38,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.1428571428571428) internal successors, (184), 161 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:49:38,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 184 transitions. [2024-11-18 08:49:38,501 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 184 transitions. Word has length 141 [2024-11-18 08:49:38,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:49:38,502 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 184 transitions. [2024-11-18 08:49:38,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:49:38,502 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 184 transitions. [2024-11-18 08:49:38,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 08:49:38,503 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:49:38,503 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 9, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:49:38,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 08:49:38,503 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:49:38,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:49:38,504 INFO L85 PathProgramCache]: Analyzing trace with hash 112256406, now seen corresponding path program 4 times [2024-11-18 08:49:38,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:49:38,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425127565] [2024-11-18 08:49:38,504 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 08:49:38,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:49:38,550 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 08:49:38,550 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:49:38,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2290 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 2118 trivial. 0 not checked. [2024-11-18 08:49:38,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:49:38,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425127565] [2024-11-18 08:49:38,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425127565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:49:38,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684406887] [2024-11-18 08:49:38,822 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 08:49:38,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:38,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:49:38,826 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:49:38,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 08:49:38,956 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 08:49:38,957 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:49:38,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 08:49:38,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:49:39,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2290 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 2118 trivial. 0 not checked. [2024-11-18 08:49:39,017 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:49:39,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2290 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 2118 trivial. 0 not checked. [2024-11-18 08:49:39,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684406887] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:49:39,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:49:39,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2024-11-18 08:49:39,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784663125] [2024-11-18 08:49:39,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:49:39,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-18 08:49:39,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:49:39,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-18 08:49:39,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2024-11-18 08:49:39,190 INFO L87 Difference]: Start difference. First operand 162 states and 184 transitions. Second operand has 23 states, 23 states have (on average 4.260869565217392) internal successors, (98), 23 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:49:39,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:49:39,357 INFO L93 Difference]: Finished difference Result 284 states and 351 transitions. [2024-11-18 08:49:39,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-18 08:49:39,357 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.260869565217392) internal successors, (98), 23 states have internal predecessors, (98), 0 states have call successors, (0), 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 144 [2024-11-18 08:49:39,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:49:39,359 INFO L225 Difference]: With dead ends: 284 [2024-11-18 08:49:39,359 INFO L226 Difference]: Without dead ends: 275 [2024-11-18 08:49:39,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2024-11-18 08:49:39,360 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 176 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 08:49:39,360 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 173 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 08:49:39,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-11-18 08:49:39,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 228. [2024-11-18 08:49:39,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.198237885462555) internal successors, (272), 227 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:49:39,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 272 transitions. [2024-11-18 08:49:39,379 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 272 transitions. Word has length 144 [2024-11-18 08:49:39,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:49:39,379 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 272 transitions. [2024-11-18 08:49:39,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.260869565217392) internal successors, (98), 23 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:49:39,379 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 272 transitions. [2024-11-18 08:49:39,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-18 08:49:39,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:49:39,381 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 20, 20, 20, 20, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:49:39,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 08:49:39,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:39,586 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:49:39,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:49:39,586 INFO L85 PathProgramCache]: Analyzing trace with hash 996992030, now seen corresponding path program 5 times [2024-11-18 08:49:39,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:49:39,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693193136] [2024-11-18 08:49:39,586 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 08:49:39,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:49:39,879 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2024-11-18 08:49:39,879 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:49:40,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2939 backedges. 782 proven. 37 refuted. 0 times theorem prover too weak. 2120 trivial. 0 not checked. [2024-11-18 08:49:40,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:49:40,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693193136] [2024-11-18 08:49:40,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693193136] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:49:40,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811819630] [2024-11-18 08:49:40,454 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 08:49:40,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:49:40,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:49:40,456 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:49:40,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 08:50:11,390 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2024-11-18 08:50:11,390 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:50:11,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 08:50:11,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:50:11,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2939 backedges. 392 proven. 11 refuted. 0 times theorem prover too weak. 2536 trivial. 0 not checked. [2024-11-18 08:50:11,470 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:50:11,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2939 backedges. 397 proven. 6 refuted. 0 times theorem prover too weak. 2536 trivial. 0 not checked. [2024-11-18 08:50:11,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811819630] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:50:11,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:50:11,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 10, 10] total 32 [2024-11-18 08:50:11,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939253566] [2024-11-18 08:50:11,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:50:11,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-18 08:50:11,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:50:11,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-18 08:50:11,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=602, Unknown=0, NotChecked=0, Total=992 [2024-11-18 08:50:11,568 INFO L87 Difference]: Start difference. First operand 228 states and 272 transitions. Second operand has 32 states, 32 states have (on average 3.84375) internal successors, (123), 32 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:50:12,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:50:12,587 INFO L93 Difference]: Finished difference Result 418 states and 553 transitions. [2024-11-18 08:50:12,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-11-18 08:50:12,587 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.84375) internal successors, (123), 32 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2024-11-18 08:50:12,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:50:12,588 INFO L225 Difference]: With dead ends: 418 [2024-11-18 08:50:12,588 INFO L226 Difference]: Without dead ends: 297 [2024-11-18 08:50:12,590 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 367 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1567 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2559, Invalid=4581, Unknown=0, NotChecked=0, Total=7140 [2024-11-18 08:50:12,591 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 152 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 08:50:12,591 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 287 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 08:50:12,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2024-11-18 08:50:12,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2024-11-18 08:50:12,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.2060810810810811) internal successors, (357), 296 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:50:12,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 357 transitions. [2024-11-18 08:50:12,618 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 357 transitions. Word has length 188 [2024-11-18 08:50:12,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:50:12,618 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 357 transitions. [2024-11-18 08:50:12,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.84375) internal successors, (123), 32 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:50:12,619 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 357 transitions. [2024-11-18 08:50:12,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-11-18 08:50:12,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:50:12,621 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 37, 37, 37, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:50:12,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-18 08:50:12,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:50:12,821 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:50:12,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:50:12,822 INFO L85 PathProgramCache]: Analyzing trace with hash -459512356, now seen corresponding path program 6 times [2024-11-18 08:50:12,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:50:12,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105332209] [2024-11-18 08:50:12,822 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 08:50:12,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:50:12,863 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-18 08:50:12,864 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:50:12,939 INFO L134 CoverageAnalysis]: Checked inductivity of 5634 backedges. 474 proven. 12 refuted. 0 times theorem prover too weak. 5148 trivial. 0 not checked. [2024-11-18 08:50:12,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:50:12,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105332209] [2024-11-18 08:50:12,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105332209] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:50:12,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58311885] [2024-11-18 08:50:12,939 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 08:50:12,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:50:12,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:50:12,941 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:50:12,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 08:50:13,100 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-18 08:50:13,100 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:50:13,102 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 08:50:13,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:50:13,159 INFO L134 CoverageAnalysis]: Checked inductivity of 5634 backedges. 474 proven. 12 refuted. 0 times theorem prover too weak. 5148 trivial. 0 not checked. [2024-11-18 08:50:13,160 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:50:13,269 INFO L134 CoverageAnalysis]: Checked inductivity of 5634 backedges. 474 proven. 12 refuted. 0 times theorem prover too weak. 5148 trivial. 0 not checked. [2024-11-18 08:50:13,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58311885] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:50:13,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:50:13,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-18 08:50:13,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127866087] [2024-11-18 08:50:13,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:50:13,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 08:50:13,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:50:13,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 08:50:13,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-11-18 08:50:13,271 INFO L87 Difference]: Start difference. First operand 297 states and 357 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:50:13,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:50:13,812 INFO L93 Difference]: Finished difference Result 1870 states and 2751 transitions. [2024-11-18 08:50:13,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-18 08:50:13,812 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 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 293 [2024-11-18 08:50:13,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:50:13,820 INFO L225 Difference]: With dead ends: 1870 [2024-11-18 08:50:13,820 INFO L226 Difference]: Without dead ends: 1861 [2024-11-18 08:50:13,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=508, Invalid=974, Unknown=0, NotChecked=0, Total=1482 [2024-11-18 08:50:13,822 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 116 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 08:50:13,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 103 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 08:50:13,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2024-11-18 08:50:13,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 370. [2024-11-18 08:50:13,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 369 states have (on average 1.2601626016260163) internal successors, (465), 369 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:50:13,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 465 transitions. [2024-11-18 08:50:13,890 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 465 transitions. Word has length 293 [2024-11-18 08:50:13,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:50:13,891 INFO L471 AbstractCegarLoop]: Abstraction has 370 states and 465 transitions. [2024-11-18 08:50:13,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:50:13,891 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 465 transitions. [2024-11-18 08:50:13,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-11-18 08:50:13,893 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:50:13,893 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 42, 42, 42, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:50:13,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 08:50:14,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-18 08:50:14,098 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:50:14,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:50:14,099 INFO L85 PathProgramCache]: Analyzing trace with hash -271347314, now seen corresponding path program 7 times [2024-11-18 08:50:14,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:50:14,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960343872] [2024-11-18 08:50:14,099 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 08:50:14,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:50:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:50:15,822 INFO L134 CoverageAnalysis]: Checked inductivity of 6319 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 4203 trivial. 0 not checked. [2024-11-18 08:50:15,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:50:15,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960343872] [2024-11-18 08:50:15,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960343872] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:50:15,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29452365] [2024-11-18 08:50:15,824 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 08:50:15,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:50:15,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:50:15,825 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:50:15,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 08:50:16,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 08:50:16,059 INFO L255 TraceCheckSpWp]: Trace formula consists of 1133 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-18 08:50:16,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:50:16,182 INFO L134 CoverageAnalysis]: Checked inductivity of 6319 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 4203 trivial. 0 not checked. [2024-11-18 08:50:16,182 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:50:18,197 INFO L134 CoverageAnalysis]: Checked inductivity of 6319 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 4203 trivial. 0 not checked. [2024-11-18 08:50:18,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29452365] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:50:18,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:50:18,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2024-11-18 08:50:18,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761218811] [2024-11-18 08:50:18,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:50:18,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-18 08:50:18,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:50:18,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-18 08:50:18,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-18 08:50:18,202 INFO L87 Difference]: Start difference. First operand 370 states and 465 transitions. Second operand has 97 states, 97 states have (on average 2.1237113402061856) internal successors, (206), 97 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:50:21,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:50:21,354 INFO L93 Difference]: Finished difference Result 5422 states and 7703 transitions. [2024-11-18 08:50:21,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-18 08:50:21,355 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.1237113402061856) internal successors, (206), 97 states have internal predecessors, (206), 0 states have call successors, (0), 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 308 [2024-11-18 08:50:21,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:50:21,369 INFO L225 Difference]: With dead ends: 5422 [2024-11-18 08:50:21,370 INFO L226 Difference]: Without dead ends: 5147 [2024-11-18 08:50:21,373 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 568 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-18 08:50:21,373 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 2564 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2564 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 08:50:21,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2564 Valid, 539 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 08:50:21,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5147 states. [2024-11-18 08:50:21,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5147 to 466. [2024-11-18 08:50:21,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 465 states have (on average 1.206451612903226) internal successors, (561), 465 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:50:21,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 561 transitions. [2024-11-18 08:50:21,460 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 561 transitions. Word has length 308 [2024-11-18 08:50:21,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:50:21,461 INFO L471 AbstractCegarLoop]: Abstraction has 466 states and 561 transitions. [2024-11-18 08:50:21,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.1237113402061856) internal successors, (206), 97 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:50:21,461 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 561 transitions. [2024-11-18 08:50:21,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2024-11-18 08:50:21,464 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:50:21,464 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 42, 42, 42, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:50:21,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-18 08:50:21,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:50:21,669 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:50:21,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:50:21,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1034609170, now seen corresponding path program 8 times [2024-11-18 08:50:21,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:50:21,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98367115] [2024-11-18 08:50:21,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 08:50:21,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:50:21,766 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 08:50:21,766 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:50:26,614 INFO L134 CoverageAnalysis]: Checked inductivity of 13039 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 4203 trivial. 0 not checked. [2024-11-18 08:50:26,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:50:26,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98367115] [2024-11-18 08:50:26,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98367115] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:50:26,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400977556] [2024-11-18 08:50:26,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 08:50:26,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:50:26,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:50:26,616 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:50:26,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 08:50:26,886 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 08:50:26,886 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:50:26,893 INFO L255 TraceCheckSpWp]: Trace formula consists of 1565 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-18 08:50:26,898 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:50:27,091 INFO L134 CoverageAnalysis]: Checked inductivity of 13039 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 4203 trivial. 0 not checked. [2024-11-18 08:50:27,091 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:50:33,943 INFO L134 CoverageAnalysis]: Checked inductivity of 13039 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 4203 trivial. 0 not checked. [2024-11-18 08:50:33,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400977556] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:50:33,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:50:33,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2024-11-18 08:50:33,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25289806] [2024-11-18 08:50:33,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:50:33,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2024-11-18 08:50:33,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:50:33,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2024-11-18 08:50:33,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-18 08:50:33,956 INFO L87 Difference]: Start difference. First operand 466 states and 561 transitions. Second operand has 193 states, 193 states have (on average 2.062176165803109) internal successors, (398), 193 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:05,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:51:05,163 INFO L93 Difference]: Finished difference Result 11758 states and 16775 transitions. [2024-11-18 08:51:05,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2024-11-18 08:51:05,164 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 2.062176165803109) internal successors, (398), 193 states have internal predecessors, (398), 0 states have call successors, (0), 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 404 [2024-11-18 08:51:05,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:51:05,199 INFO L225 Difference]: With dead ends: 11758 [2024-11-18 08:51:05,199 INFO L226 Difference]: Without dead ends: 11483 [2024-11-18 08:51:05,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 903 GetRequests, 712 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-18 08:51:05,205 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 5252 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 753 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5252 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 1729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 753 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 08:51:05,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5252 Valid, 1068 Invalid, 1729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [753 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 08:51:05,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11483 states. [2024-11-18 08:51:05,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11483 to 658. [2024-11-18 08:51:05,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 657 states have (on average 1.1461187214611872) internal successors, (753), 657 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:05,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 753 transitions. [2024-11-18 08:51:05,386 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 753 transitions. Word has length 404 [2024-11-18 08:51:05,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 08:51:05,386 INFO L471 AbstractCegarLoop]: Abstraction has 658 states and 753 transitions. [2024-11-18 08:51:05,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 2.062176165803109) internal successors, (398), 193 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:05,387 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 753 transitions. [2024-11-18 08:51:05,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2024-11-18 08:51:05,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 08:51:05,394 INFO L215 NwaCegarLoop]: trace histogram [190, 190, 42, 42, 42, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 08:51:05,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-18 08:51:05,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-18 08:51:05,595 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 08:51:05,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 08:51:05,595 INFO L85 PathProgramCache]: Analyzing trace with hash -121456978, now seen corresponding path program 9 times [2024-11-18 08:51:05,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 08:51:05,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510188339] [2024-11-18 08:51:05,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 08:51:05,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 08:51:05,689 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-18 08:51:05,690 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:51:05,795 INFO L134 CoverageAnalysis]: Checked inductivity of 40303 backedges. 1429 proven. 99 refuted. 0 times theorem prover too weak. 38775 trivial. 0 not checked. [2024-11-18 08:51:05,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 08:51:05,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510188339] [2024-11-18 08:51:05,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510188339] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 08:51:05,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092008845] [2024-11-18 08:51:05,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 08:51:05,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 08:51:05,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 08:51:05,800 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 08:51:05,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 08:51:06,098 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-18 08:51:06,098 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 08:51:06,102 INFO L255 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 08:51:06,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 08:51:06,158 INFO L134 CoverageAnalysis]: Checked inductivity of 40303 backedges. 1429 proven. 99 refuted. 0 times theorem prover too weak. 38775 trivial. 0 not checked. [2024-11-18 08:51:06,158 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 08:51:06,279 INFO L134 CoverageAnalysis]: Checked inductivity of 40303 backedges. 1429 proven. 99 refuted. 0 times theorem prover too weak. 38775 trivial. 0 not checked. [2024-11-18 08:51:06,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092008845] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 08:51:06,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 08:51:06,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 19 [2024-11-18 08:51:06,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717512786] [2024-11-18 08:51:06,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 08:51:06,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-18 08:51:06,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 08:51:06,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-18 08:51:06,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2024-11-18 08:51:06,282 INFO L87 Difference]: Start difference. First operand 658 states and 753 transitions. Second operand has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 08:51:07,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 08:51:07,290 INFO L93 Difference]: Finished difference Result 2737 states and 3782 transitions. [2024-11-18 08:51:07,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-18 08:51:07,290 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 596 [2024-11-18 08:51:07,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 08:51:07,297 INFO L225 Difference]: With dead ends: 2737