./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/reducercommutativity/rangesum60.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d 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/reducercommutativity/rangesum60.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 6531e15623308e4078ac0600b5852029139b0fe65df20988c6e3b5d5367f33f6 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 09:52:13,462 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 09:52:13,523 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 09:52:13,527 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 09:52:13,528 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 09:52:13,545 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 09:52:13,546 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 09:52:13,546 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 09:52:13,547 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 09:52:13,547 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 09:52:13,547 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 09:52:13,548 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 09:52:13,548 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 09:52:13,548 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 09:52:13,549 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 09:52:13,549 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 09:52:13,549 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 09:52:13,549 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 09:52:13,550 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 09:52:13,550 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 09:52:13,550 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 09:52:13,553 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 09:52:13,553 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 09:52:13,554 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 09:52:13,554 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 09:52:13,554 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 09:52:13,554 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 09:52:13,554 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 09:52:13,555 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 09:52:13,555 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 09:52:13,555 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 09:52:13,555 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 09:52:13,555 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 09:52:13,555 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 09:52:13,556 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 09:52:13,556 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 09:52:13,556 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 09:52:13,559 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 09:52:13,559 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 09:52:13,559 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 09:52:13,559 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 09:52:13,559 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 09:52:13,560 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6531e15623308e4078ac0600b5852029139b0fe65df20988c6e3b5d5367f33f6 [2024-11-08 09:52:13,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 09:52:13,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 09:52:13,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 09:52:13,787 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 09:52:13,787 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 09:52:13,788 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/rangesum60.i [2024-11-08 09:52:15,064 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 09:52:15,251 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 09:52:15,252 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/rangesum60.i [2024-11-08 09:52:15,259 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69c77c42b/1312c99021ef4077ab0866adbdfac6e2/FLAG109510cc3 [2024-11-08 09:52:15,275 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69c77c42b/1312c99021ef4077ab0866adbdfac6e2 [2024-11-08 09:52:15,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 09:52:15,279 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 09:52:15,281 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 09:52:15,281 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 09:52:15,285 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 09:52:15,286 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 09:52:15" (1/1) ... [2024-11-08 09:52:15,287 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@579e6f3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:52:15, skipping insertion in model container [2024-11-08 09:52:15,288 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 09:52:15" (1/1) ... [2024-11-08 09:52:15,306 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 09:52:15,455 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/reducercommutativity/rangesum60.i[1465,1478] [2024-11-08 09:52:15,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 09:52:15,465 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 09:52:15,481 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/reducercommutativity/rangesum60.i[1465,1478] [2024-11-08 09:52:15,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 09:52:15,495 INFO L204 MainTranslator]: Completed translation [2024-11-08 09:52:15,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:52:15 WrapperNode [2024-11-08 09:52:15,495 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 09:52:15,496 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 09:52:15,496 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 09:52:15,496 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 09:52:15,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:52:15" (1/1) ... [2024-11-08 09:52:15,514 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:52:15" (1/1) ... [2024-11-08 09:52:15,536 INFO L138 Inliner]: procedures = 17, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2024-11-08 09:52:15,536 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 09:52:15,537 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 09:52:15,537 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 09:52:15,537 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 09:52:15,546 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:52:15" (1/1) ... [2024-11-08 09:52:15,546 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:52:15" (1/1) ... [2024-11-08 09:52:15,548 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:52:15" (1/1) ... [2024-11-08 09:52:15,559 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2024-11-08 09:52:15,560 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:52:15" (1/1) ... [2024-11-08 09:52:15,560 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:52:15" (1/1) ... [2024-11-08 09:52:15,564 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:52:15" (1/1) ... [2024-11-08 09:52:15,566 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:52:15" (1/1) ... [2024-11-08 09:52:15,567 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:52:15" (1/1) ... [2024-11-08 09:52:15,568 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:52:15" (1/1) ... [2024-11-08 09:52:15,569 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 09:52:15,570 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 09:52:15,570 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 09:52:15,570 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 09:52:15,574 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:52:15" (1/1) ... [2024-11-08 09:52:15,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 09:52:15,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:15,605 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) [2024-11-08 09:52:15,608 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 [2024-11-08 09:52:15,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 09:52:15,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 09:52:15,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 09:52:15,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 09:52:15,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 09:52:15,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 09:52:15,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 09:52:15,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 09:52:15,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 09:52:15,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 09:52:15,648 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2024-11-08 09:52:15,648 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2024-11-08 09:52:15,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 09:52:15,726 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 09:52:15,728 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 09:52:15,866 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-08 09:52:15,868 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 09:52:15,879 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 09:52:15,881 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-08 09:52:15,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 09:52:15 BoogieIcfgContainer [2024-11-08 09:52:15,882 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 09:52:15,884 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 09:52:15,884 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 09:52:15,887 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 09:52:15,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 09:52:15" (1/3) ... [2024-11-08 09:52:15,888 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bacaae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 09:52:15, skipping insertion in model container [2024-11-08 09:52:15,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:52:15" (2/3) ... [2024-11-08 09:52:15,889 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bacaae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 09:52:15, skipping insertion in model container [2024-11-08 09:52:15,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 09:52:15" (3/3) ... [2024-11-08 09:52:15,891 INFO L112 eAbstractionObserver]: Analyzing ICFG rangesum60.i [2024-11-08 09:52:15,905 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 09:52:15,905 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 09:52:15,961 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 09:52:15,967 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;@265c8de8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 09:52:15,968 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 09:52:15,971 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:52:15,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-08 09:52:15,978 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:15,979 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:52:15,979 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:15,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:15,986 INFO L85 PathProgramCache]: Analyzing trace with hash -275565944, now seen corresponding path program 1 times [2024-11-08 09:52:15,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:15,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939901718] [2024-11-08 09:52:15,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:15,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:16,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 09:52:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:16,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 09:52:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:16,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 09:52:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:16,285 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 09:52:16,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:16,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939901718] [2024-11-08 09:52:16,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939901718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:52:16,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 09:52:16,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 09:52:16,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85567912] [2024-11-08 09:52:16,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:52:16,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 09:52:16,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:52:16,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 09:52:16,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 09:52:16,311 INFO L87 Difference]: Start difference. First operand has 28 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-08 09:52:16,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:52:16,392 INFO L93 Difference]: Finished difference Result 54 states and 77 transitions. [2024-11-08 09:52:16,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 09:52:16,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-11-08 09:52:16,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:52:16,399 INFO L225 Difference]: With dead ends: 54 [2024-11-08 09:52:16,399 INFO L226 Difference]: Without dead ends: 26 [2024-11-08 09:52:16,401 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 09:52:16,403 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 1 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:52:16,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 61 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:52:16,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-08 09:52:16,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2024-11-08 09:52:16,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:52:16,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2024-11-08 09:52:16,431 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 29 [2024-11-08 09:52:16,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:52:16,431 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2024-11-08 09:52:16,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-08 09:52:16,431 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2024-11-08 09:52:16,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-08 09:52:16,433 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:16,433 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:52:16,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 09:52:16,433 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:16,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:16,434 INFO L85 PathProgramCache]: Analyzing trace with hash -653100523, now seen corresponding path program 1 times [2024-11-08 09:52:16,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:16,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765039306] [2024-11-08 09:52:16,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:16,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:16,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:16,555 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-08 09:52:16,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:16,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 09:52:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:16,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-08 09:52:16,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:16,606 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 09:52:16,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:16,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765039306] [2024-11-08 09:52:16,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765039306] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:52:16,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896386453] [2024-11-08 09:52:16,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:16,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:16,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:16,613 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) [2024-11-08 09:52:16,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 09:52:16,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:16,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 09:52:16,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:52:16,739 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 09:52:16,740 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 09:52:16,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896386453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:52:16,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 09:52:16,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-08 09:52:16,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719083235] [2024-11-08 09:52:16,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:52:16,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 09:52:16,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:52:16,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 09:52:16,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 09:52:16,743 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 09:52:16,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:52:16,758 INFO L93 Difference]: Finished difference Result 46 states and 61 transitions. [2024-11-08 09:52:16,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 09:52:16,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2024-11-08 09:52:16,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:52:16,760 INFO L225 Difference]: With dead ends: 46 [2024-11-08 09:52:16,760 INFO L226 Difference]: Without dead ends: 28 [2024-11-08 09:52:16,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 09:52:16,761 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:52:16,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 51 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:52:16,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-08 09:52:16,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2024-11-08 09:52:16,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:52:16,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2024-11-08 09:52:16,770 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 31 [2024-11-08 09:52:16,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:52:16,770 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2024-11-08 09:52:16,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 09:52:16,771 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2024-11-08 09:52:16,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-08 09:52:16,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:16,771 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:52:16,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 09:52:16,972 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 [2024-11-08 09:52:16,972 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:16,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:16,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1081404920, now seen corresponding path program 1 times [2024-11-08 09:52:16,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:16,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056720552] [2024-11-08 09:52:16,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:16,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:16,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:17,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-08 09:52:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:17,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-08 09:52:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:17,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-08 09:52:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:17,107 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-08 09:52:17,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:17,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056720552] [2024-11-08 09:52:17,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056720552] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:52:17,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833484717] [2024-11-08 09:52:17,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:17,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:17,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:17,116 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) [2024-11-08 09:52:17,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 09:52:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:17,199 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 09:52:17,200 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:52:17,218 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-08 09:52:17,219 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 09:52:17,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833484717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:52:17,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 09:52:17,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-08 09:52:17,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389796032] [2024-11-08 09:52:17,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:52:17,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 09:52:17,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:52:17,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 09:52:17,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 09:52:17,221 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 09:52:17,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:52:17,238 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2024-11-08 09:52:17,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 09:52:17,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2024-11-08 09:52:17,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:52:17,240 INFO L225 Difference]: With dead ends: 44 [2024-11-08 09:52:17,240 INFO L226 Difference]: Without dead ends: 29 [2024-11-08 09:52:17,240 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 09:52:17,241 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:52:17,242 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 52 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:52:17,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-08 09:52:17,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-11-08 09:52:17,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:52:17,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-11-08 09:52:17,250 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 40 [2024-11-08 09:52:17,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:52:17,251 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-11-08 09:52:17,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 09:52:17,251 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-11-08 09:52:17,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-08 09:52:17,252 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:17,253 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:52:17,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 09:52:17,453 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 [2024-11-08 09:52:17,454 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:17,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:17,454 INFO L85 PathProgramCache]: Analyzing trace with hash -673301430, now seen corresponding path program 1 times [2024-11-08 09:52:17,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:17,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541746652] [2024-11-08 09:52:17,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:17,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:17,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-08 09:52:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:17,559 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-08 09:52:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:17,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-08 09:52:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:17,582 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 09:52:17,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:17,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541746652] [2024-11-08 09:52:17,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541746652] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:52:17,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968934014] [2024-11-08 09:52:17,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:17,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:17,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:17,585 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) [2024-11-08 09:52:17,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 09:52:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:17,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 09:52:17,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:52:17,683 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-08 09:52:17,685 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 09:52:17,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968934014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:52:17,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 09:52:17,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-08 09:52:17,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434128278] [2024-11-08 09:52:17,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:52:17,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 09:52:17,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:52:17,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 09:52:17,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 09:52:17,687 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 09:52:17,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:52:17,700 INFO L93 Difference]: Finished difference Result 53 states and 69 transitions. [2024-11-08 09:52:17,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 09:52:17,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 42 [2024-11-08 09:52:17,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:52:17,702 INFO L225 Difference]: With dead ends: 53 [2024-11-08 09:52:17,704 INFO L226 Difference]: Without dead ends: 32 [2024-11-08 09:52:17,704 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 09:52:17,705 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:52:17,707 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:52:17,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-08 09:52:17,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-08 09:52:17,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:52:17,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2024-11-08 09:52:17,714 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 42 [2024-11-08 09:52:17,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:52:17,714 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2024-11-08 09:52:17,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 09:52:17,715 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2024-11-08 09:52:17,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-08 09:52:17,717 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:17,717 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:52:17,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 09:52:17,917 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 [2024-11-08 09:52:17,918 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:17,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:17,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1042180377, now seen corresponding path program 1 times [2024-11-08 09:52:17,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:17,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002609065] [2024-11-08 09:52:17,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:17,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:17,964 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-08 09:52:17,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:17,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-08 09:52:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:17,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-08 09:52:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:17,998 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 09:52:17,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:17,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002609065] [2024-11-08 09:52:17,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002609065] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:52:17,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931188588] [2024-11-08 09:52:17,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:17,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:17,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:18,002 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) [2024-11-08 09:52:18,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 09:52:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:18,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 09:52:18,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:52:18,106 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-08 09:52:18,107 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:52:18,152 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-08 09:52:18,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931188588] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:52:18,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:52:18,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2024-11-08 09:52:18,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738545490] [2024-11-08 09:52:18,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:52:18,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 09:52:18,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:52:18,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 09:52:18,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-08 09:52:18,153 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 09:52:18,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:52:18,201 INFO L93 Difference]: Finished difference Result 69 states and 92 transitions. [2024-11-08 09:52:18,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 09:52:18,203 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 42 [2024-11-08 09:52:18,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:52:18,204 INFO L225 Difference]: With dead ends: 69 [2024-11-08 09:52:18,204 INFO L226 Difference]: Without dead ends: 42 [2024-11-08 09:52:18,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-08 09:52:18,205 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 4 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:52:18,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 135 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:52:18,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-08 09:52:18,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2024-11-08 09:52:18,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 36 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:52:18,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2024-11-08 09:52:18,209 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 42 [2024-11-08 09:52:18,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:52:18,209 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2024-11-08 09:52:18,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 09:52:18,210 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2024-11-08 09:52:18,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-08 09:52:18,211 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:18,211 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:52:18,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 09:52:18,411 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 [2024-11-08 09:52:18,412 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:18,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:18,412 INFO L85 PathProgramCache]: Analyzing trace with hash -604386836, now seen corresponding path program 2 times [2024-11-08 09:52:18,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:18,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722310110] [2024-11-08 09:52:18,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:18,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:18,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-08 09:52:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:18,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-08 09:52:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:18,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-08 09:52:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:18,486 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-08 09:52:18,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:18,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722310110] [2024-11-08 09:52:18,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722310110] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:52:18,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858838848] [2024-11-08 09:52:18,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 09:52:18,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:18,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:18,490 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) [2024-11-08 09:52:18,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 09:52:18,564 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 09:52:18,564 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:52:18,565 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 09:52:18,566 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:52:18,609 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-08 09:52:18,609 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:52:18,686 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-08 09:52:18,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858838848] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:52:18,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:52:18,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-08 09:52:18,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61941521] [2024-11-08 09:52:18,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:52:18,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 09:52:18,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:52:18,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 09:52:18,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-08 09:52:18,688 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-08 09:52:18,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:52:18,737 INFO L93 Difference]: Finished difference Result 86 states and 112 transitions. [2024-11-08 09:52:18,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 09:52:18,738 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 57 [2024-11-08 09:52:18,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:52:18,741 INFO L225 Difference]: With dead ends: 86 [2024-11-08 09:52:18,741 INFO L226 Difference]: Without dead ends: 56 [2024-11-08 09:52:18,741 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-08 09:52:18,742 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:52:18,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 88 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:52:18,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-08 09:52:18,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2024-11-08 09:52:18,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:52:18,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2024-11-08 09:52:18,750 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 57 [2024-11-08 09:52:18,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:52:18,750 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2024-11-08 09:52:18,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-08 09:52:18,750 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2024-11-08 09:52:18,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-08 09:52:18,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:18,754 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:52:18,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 09:52:18,955 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 [2024-11-08 09:52:18,955 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:18,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:18,956 INFO L85 PathProgramCache]: Analyzing trace with hash 948362870, now seen corresponding path program 1 times [2024-11-08 09:52:18,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:18,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276557989] [2024-11-08 09:52:18,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:18,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:19,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 09:52:19,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:19,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-08 09:52:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:19,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 09:52:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:19,066 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2024-11-08 09:52:19,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:19,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276557989] [2024-11-08 09:52:19,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276557989] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:52:19,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127649182] [2024-11-08 09:52:19,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:19,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:19,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:19,068 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) [2024-11-08 09:52:19,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 09:52:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:19,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 09:52:19,160 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:52:19,287 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-11-08 09:52:19,287 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:52:19,496 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-11-08 09:52:19,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127649182] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:52:19,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:52:19,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 13, 13] total 26 [2024-11-08 09:52:19,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37841029] [2024-11-08 09:52:19,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:52:19,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-08 09:52:19,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:52:19,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-08 09:52:19,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=369, Unknown=0, NotChecked=0, Total=650 [2024-11-08 09:52:19,498 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 26 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 26 states have internal predecessors, (81), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 09:52:19,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:52:19,583 INFO L93 Difference]: Finished difference Result 106 states and 130 transitions. [2024-11-08 09:52:19,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-08 09:52:19,584 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 26 states have internal predecessors, (81), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 78 [2024-11-08 09:52:19,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:52:19,585 INFO L225 Difference]: With dead ends: 106 [2024-11-08 09:52:19,585 INFO L226 Difference]: Without dead ends: 78 [2024-11-08 09:52:19,585 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=281, Invalid=369, Unknown=0, NotChecked=0, Total=650 [2024-11-08 09:52:19,586 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 3 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:52:19,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 162 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:52:19,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-08 09:52:19,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2024-11-08 09:52:19,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 72 states have (on average 1.0694444444444444) internal successors, (77), 72 states have internal predecessors, (77), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:52:19,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2024-11-08 09:52:19,592 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 78 [2024-11-08 09:52:19,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:52:19,592 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2024-11-08 09:52:19,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 26 states have internal predecessors, (81), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 09:52:19,592 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2024-11-08 09:52:19,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-08 09:52:19,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:19,594 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 9, 9, 6, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:52:19,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 09:52:19,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:19,795 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:19,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:19,795 INFO L85 PathProgramCache]: Analyzing trace with hash 869295696, now seen corresponding path program 2 times [2024-11-08 09:52:19,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:19,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825214879] [2024-11-08 09:52:19,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:19,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:19,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:20,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-08 09:52:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:20,381 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-08 09:52:20,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:20,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-11-08 09:52:20,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:20,399 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-08 09:52:20,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:20,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825214879] [2024-11-08 09:52:20,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825214879] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:52:20,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306604387] [2024-11-08 09:52:20,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 09:52:20,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:20,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:20,403 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) [2024-11-08 09:52:20,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 09:52:20,511 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 09:52:20,512 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:52:20,514 INFO L255 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-08 09:52:20,516 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:52:20,600 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-08 09:52:20,601 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:52:21,251 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-08 09:52:21,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306604387] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:52:21,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:52:21,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-08 09:52:21,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155550539] [2024-11-08 09:52:21,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:52:21,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-08 09:52:21,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:52:21,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-08 09:52:21,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-08 09:52:21,255 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand has 49 states, 49 states have (on average 2.489795918367347) internal successors, (122), 49 states have internal predecessors, (122), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 09:52:21,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:52:21,388 INFO L93 Difference]: Finished difference Result 155 states and 190 transitions. [2024-11-08 09:52:21,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-08 09:52:21,388 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.489795918367347) internal successors, (122), 49 states have internal predecessors, (122), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 104 [2024-11-08 09:52:21,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:52:21,389 INFO L225 Difference]: With dead ends: 155 [2024-11-08 09:52:21,389 INFO L226 Difference]: Without dead ends: 125 [2024-11-08 09:52:21,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-08 09:52:21,391 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:52:21,391 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 178 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:52:21,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-08 09:52:21,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2024-11-08 09:52:21,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 120 states have (on average 1.0416666666666667) internal successors, (125), 120 states have internal predecessors, (125), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:52:21,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 131 transitions. [2024-11-08 09:52:21,409 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 131 transitions. Word has length 104 [2024-11-08 09:52:21,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:52:21,409 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 131 transitions. [2024-11-08 09:52:21,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.489795918367347) internal successors, (122), 49 states have internal predecessors, (122), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 09:52:21,410 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 131 transitions. [2024-11-08 09:52:21,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-08 09:52:21,411 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:21,411 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 9, 9, 6, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:52:21,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 09:52:21,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:21,616 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:21,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:21,616 INFO L85 PathProgramCache]: Analyzing trace with hash 605357184, now seen corresponding path program 3 times [2024-11-08 09:52:21,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:21,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720015908] [2024-11-08 09:52:21,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:21,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:21,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:23,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-08 09:52:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:23,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-11-08 09:52:23,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:23,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-11-08 09:52:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:23,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2270 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-08 09:52:23,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:23,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720015908] [2024-11-08 09:52:23,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720015908] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:52:23,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235391733] [2024-11-08 09:52:23,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 09:52:23,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:23,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:23,156 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) [2024-11-08 09:52:23,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 09:52:23,259 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-08 09:52:23,260 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:52:23,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 09:52:23,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:52:23,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2270 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 2220 trivial. 0 not checked. [2024-11-08 09:52:23,351 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:52:23,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2270 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 2220 trivial. 0 not checked. [2024-11-08 09:52:23,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235391733] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:52:23,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:52:23,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 5, 5] total 55 [2024-11-08 09:52:23,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527872907] [2024-11-08 09:52:23,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:52:23,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-08 09:52:23,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:52:23,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-08 09:52:23,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1203, Invalid=1767, Unknown=0, NotChecked=0, Total=2970 [2024-11-08 09:52:23,437 INFO L87 Difference]: Start difference. First operand 125 states and 131 transitions. Second operand has 55 states, 55 states have (on average 2.5090909090909093) internal successors, (138), 55 states have internal predecessors, (138), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 09:52:23,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:52:23,589 INFO L93 Difference]: Finished difference Result 170 states and 193 transitions. [2024-11-08 09:52:23,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-08 09:52:23,590 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.5090909090909093) internal successors, (138), 55 states have internal predecessors, (138), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 152 [2024-11-08 09:52:23,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:52:23,591 INFO L225 Difference]: With dead ends: 170 [2024-11-08 09:52:23,591 INFO L226 Difference]: Without dead ends: 140 [2024-11-08 09:52:23,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1203, Invalid=1767, Unknown=0, NotChecked=0, Total=2970 [2024-11-08 09:52:23,593 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 8 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:52:23,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 217 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:52:23,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-08 09:52:23,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139. [2024-11-08 09:52:23,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 134 states have (on average 1.0671641791044777) internal successors, (143), 134 states have internal predecessors, (143), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:52:23,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 149 transitions. [2024-11-08 09:52:23,601 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 149 transitions. Word has length 152 [2024-11-08 09:52:23,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:52:23,601 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 149 transitions. [2024-11-08 09:52:23,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.5090909090909093) internal successors, (138), 55 states have internal predecessors, (138), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 09:52:23,602 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 149 transitions. [2024-11-08 09:52:23,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-08 09:52:23,603 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:23,603 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 21, 21, 15, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:52:23,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 09:52:23,807 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,SelfDestructingSolverStorable8 [2024-11-08 09:52:23,808 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:23,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:23,808 INFO L85 PathProgramCache]: Analyzing trace with hash 281160770, now seen corresponding path program 4 times [2024-11-08 09:52:23,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:23,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099605304] [2024-11-08 09:52:23,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:23,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:25,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-11-08 09:52:25,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:25,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-11-08 09:52:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:25,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-11-08 09:52:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:25,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2921 backedges. 0 proven. 2209 refuted. 0 times theorem prover too weak. 712 trivial. 0 not checked. [2024-11-08 09:52:25,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:25,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099605304] [2024-11-08 09:52:25,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099605304] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:52:25,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521341666] [2024-11-08 09:52:25,347 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 09:52:25,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:25,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:25,348 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) [2024-11-08 09:52:25,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 09:52:25,511 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 09:52:25,511 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:52:25,514 INFO L255 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 09:52:25,516 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:52:25,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2921 backedges. 428 proven. 7 refuted. 0 times theorem prover too weak. 2486 trivial. 0 not checked. [2024-11-08 09:52:25,579 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:52:25,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2921 backedges. 202 proven. 172 refuted. 0 times theorem prover too weak. 2547 trivial. 0 not checked. [2024-11-08 09:52:25,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521341666] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:52:25,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:52:25,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 5, 5] total 56 [2024-11-08 09:52:25,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493088312] [2024-11-08 09:52:25,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:52:25,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-08 09:52:25,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:52:25,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-08 09:52:25,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1252, Invalid=1828, Unknown=0, NotChecked=0, Total=3080 [2024-11-08 09:52:25,661 INFO L87 Difference]: Start difference. First operand 139 states and 149 transitions. Second operand has 56 states, 56 states have (on average 2.625) internal successors, (147), 56 states have internal predecessors, (147), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 09:52:25,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:52:25,798 INFO L93 Difference]: Finished difference Result 196 states and 223 transitions. [2024-11-08 09:52:25,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-08 09:52:25,798 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.625) internal successors, (147), 56 states have internal predecessors, (147), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 190 [2024-11-08 09:52:25,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:52:25,799 INFO L225 Difference]: With dead ends: 196 [2024-11-08 09:52:25,799 INFO L226 Difference]: Without dead ends: 154 [2024-11-08 09:52:25,800 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1252, Invalid=1828, Unknown=0, NotChecked=0, Total=3080 [2024-11-08 09:52:25,801 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 3 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:52:25,801 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 135 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:52:25,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-08 09:52:25,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2024-11-08 09:52:25,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 148 states have (on average 1.0608108108108107) internal successors, (157), 148 states have internal predecessors, (157), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:52:25,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 163 transitions. [2024-11-08 09:52:25,814 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 163 transitions. Word has length 190 [2024-11-08 09:52:25,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:52:25,814 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 163 transitions. [2024-11-08 09:52:25,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.625) internal successors, (147), 56 states have internal predecessors, (147), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 09:52:25,818 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 163 transitions. [2024-11-08 09:52:25,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-08 09:52:25,819 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:25,819 INFO L215 NwaCegarLoop]: trace histogram [48, 48, 33, 33, 18, 15, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:52:25,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 09:52:26,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 09:52:26,020 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:26,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:26,020 INFO L85 PathProgramCache]: Analyzing trace with hash 75986180, now seen corresponding path program 5 times [2024-11-08 09:52:26,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:26,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063464861] [2024-11-08 09:52:26,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:26,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:27,381 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-11-08 09:52:27,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:27,388 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-11-08 09:52:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:27,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-11-08 09:52:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:27,403 INFO L134 CoverageAnalysis]: Checked inductivity of 4006 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 1702 trivial. 0 not checked. [2024-11-08 09:52:27,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:27,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063464861] [2024-11-08 09:52:27,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063464861] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:52:27,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089524697] [2024-11-08 09:52:27,404 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 09:52:27,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:27,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:27,405 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) [2024-11-08 09:52:27,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 09:52:30,047 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2024-11-08 09:52:30,048 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:52:30,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 09:52:30,059 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:52:30,194 INFO L134 CoverageAnalysis]: Checked inductivity of 4006 backedges. 870 proven. 40 refuted. 0 times theorem prover too weak. 3096 trivial. 0 not checked. [2024-11-08 09:52:30,194 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:52:30,390 INFO L134 CoverageAnalysis]: Checked inductivity of 4006 backedges. 96 proven. 432 refuted. 0 times theorem prover too weak. 3478 trivial. 0 not checked. [2024-11-08 09:52:30,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089524697] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:52:30,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:52:30,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 9, 9] total 65 [2024-11-08 09:52:30,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682014571] [2024-11-08 09:52:30,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:52:30,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-08 09:52:30,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:52:30,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-08 09:52:30,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1394, Invalid=2766, Unknown=0, NotChecked=0, Total=4160 [2024-11-08 09:52:30,393 INFO L87 Difference]: Start difference. First operand 153 states and 163 transitions. Second operand has 65 states, 65 states have (on average 2.5538461538461537) internal successors, (166), 65 states have internal predecessors, (166), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 09:52:30,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:52:30,558 INFO L93 Difference]: Finished difference Result 234 states and 273 transitions. [2024-11-08 09:52:30,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-08 09:52:30,561 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.5538461538461537) internal successors, (166), 65 states have internal predecessors, (166), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 228 [2024-11-08 09:52:30,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:52:30,566 INFO L225 Difference]: With dead ends: 234 [2024-11-08 09:52:30,566 INFO L226 Difference]: Without dead ends: 180 [2024-11-08 09:52:30,567 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1394, Invalid=2766, Unknown=0, NotChecked=0, Total=4160 [2024-11-08 09:52:30,568 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 8 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:52:30,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 196 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:52:30,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-08 09:52:30,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 179. [2024-11-08 09:52:30,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 174 states have (on average 1.0977011494252873) internal successors, (191), 174 states have internal predecessors, (191), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:52:30,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 197 transitions. [2024-11-08 09:52:30,575 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 197 transitions. Word has length 228 [2024-11-08 09:52:30,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:52:30,575 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 197 transitions. [2024-11-08 09:52:30,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.5538461538461537) internal successors, (166), 65 states have internal predecessors, (166), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 09:52:30,575 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 197 transitions. [2024-11-08 09:52:30,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-11-08 09:52:30,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:30,578 INFO L215 NwaCegarLoop]: trace histogram [57, 57, 49, 49, 39, 18, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:52:30,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 09:52:30,781 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,SelfDestructingSolverStorable10 [2024-11-08 09:52:30,782 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:30,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:30,782 INFO L85 PathProgramCache]: Analyzing trace with hash -559829370, now seen corresponding path program 6 times [2024-11-08 09:52:30,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:30,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760786559] [2024-11-08 09:52:30,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:30,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:30,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:32,404 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-11-08 09:52:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:32,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-11-08 09:52:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:32,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-11-08 09:52:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:32,444 INFO L134 CoverageAnalysis]: Checked inductivity of 7379 backedges. 0 proven. 2401 refuted. 0 times theorem prover too weak. 4978 trivial. 0 not checked. [2024-11-08 09:52:32,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:32,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760786559] [2024-11-08 09:52:32,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760786559] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:52:32,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898786421] [2024-11-08 09:52:32,445 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 09:52:32,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:32,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:32,449 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) [2024-11-08 09:52:32,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 09:52:32,623 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-08 09:52:32,623 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:52:32,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 09:52:32,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:52:32,695 INFO L134 CoverageAnalysis]: Checked inductivity of 7379 backedges. 2252 proven. 4 refuted. 0 times theorem prover too weak. 5123 trivial. 0 not checked. [2024-11-08 09:52:32,696 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:52:32,779 INFO L134 CoverageAnalysis]: Checked inductivity of 7379 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7375 trivial. 0 not checked. [2024-11-08 09:52:32,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898786421] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:52:32,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:52:32,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 5, 5] total 58 [2024-11-08 09:52:32,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968257658] [2024-11-08 09:52:32,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:52:32,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-08 09:52:32,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:52:32,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-08 09:52:32,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1353, Invalid=1953, Unknown=0, NotChecked=0, Total=3306 [2024-11-08 09:52:32,783 INFO L87 Difference]: Start difference. First operand 179 states and 197 transitions. Second operand has 58 states, 58 states have (on average 2.5) internal successors, (145), 58 states have internal predecessors, (145), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 09:52:32,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:52:32,912 INFO L93 Difference]: Finished difference Result 268 states and 308 transitions. [2024-11-08 09:52:32,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-08 09:52:32,913 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.5) internal successors, (145), 58 states have internal predecessors, (145), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 302 [2024-11-08 09:52:32,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:52:32,914 INFO L225 Difference]: With dead ends: 268 [2024-11-08 09:52:32,914 INFO L226 Difference]: Without dead ends: 190 [2024-11-08 09:52:32,915 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 604 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1353, Invalid=1953, Unknown=0, NotChecked=0, Total=3306 [2024-11-08 09:52:32,916 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 3 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:52:32,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 184 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:52:32,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-08 09:52:32,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 189. [2024-11-08 09:52:32,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 184 states have (on average 1.0923913043478262) internal successors, (201), 184 states have internal predecessors, (201), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:52:32,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 207 transitions. [2024-11-08 09:52:32,928 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 207 transitions. Word has length 302 [2024-11-08 09:52:32,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:52:32,929 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 207 transitions. [2024-11-08 09:52:32,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.5) internal successors, (145), 58 states have internal predecessors, (145), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 09:52:32,929 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 207 transitions. [2024-11-08 09:52:32,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2024-11-08 09:52:32,932 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:32,933 INFO L215 NwaCegarLoop]: trace histogram [57, 57, 50, 50, 39, 18, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:52:32,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-08 09:52:33,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 09:52:33,137 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:33,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:33,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1171476976, now seen corresponding path program 7 times [2024-11-08 09:52:33,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:33,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305276543] [2024-11-08 09:52:33,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:33,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:33,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:34,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-11-08 09:52:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:34,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-11-08 09:52:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:34,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-11-08 09:52:34,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:34,717 INFO L134 CoverageAnalysis]: Checked inductivity of 7510 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 5010 trivial. 0 not checked. [2024-11-08 09:52:34,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:34,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305276543] [2024-11-08 09:52:34,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305276543] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:52:34,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73095906] [2024-11-08 09:52:34,718 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 09:52:34,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:34,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:34,719 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:52:34,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 09:52:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:34,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-08 09:52:34,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:52:35,060 INFO L134 CoverageAnalysis]: Checked inductivity of 7510 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 5010 trivial. 0 not checked. [2024-11-08 09:52:35,061 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:52:36,160 INFO L134 CoverageAnalysis]: Checked inductivity of 7510 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 5010 trivial. 0 not checked. [2024-11-08 09:52:36,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73095906] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:52:36,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:52:36,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 63 [2024-11-08 09:52:36,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377147692] [2024-11-08 09:52:36,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:52:36,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-08 09:52:36,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:52:36,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-08 09:52:36,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2024-11-08 09:52:36,163 INFO L87 Difference]: Start difference. First operand 189 states and 207 transitions. Second operand has 63 states, 63 states have (on average 2.4126984126984126) internal successors, (152), 63 states have internal predecessors, (152), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 09:52:36,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:52:36,281 INFO L93 Difference]: Finished difference Result 295 states and 340 transitions. [2024-11-08 09:52:36,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-08 09:52:36,283 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.4126984126984126) internal successors, (152), 63 states have internal predecessors, (152), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 312 [2024-11-08 09:52:36,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:52:36,284 INFO L225 Difference]: With dead ends: 295 [2024-11-08 09:52:36,284 INFO L226 Difference]: Without dead ends: 209 [2024-11-08 09:52:36,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 681 GetRequests, 578 SyntacticMatches, 42 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1439 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2024-11-08 09:52:36,285 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:52:36,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 128 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:52:36,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-08 09:52:36,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2024-11-08 09:52:36,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 204 states have (on average 1.0833333333333333) internal successors, (221), 204 states have internal predecessors, (221), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:52:36,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 227 transitions. [2024-11-08 09:52:36,291 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 227 transitions. Word has length 312 [2024-11-08 09:52:36,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:52:36,292 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 227 transitions. [2024-11-08 09:52:36,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.4126984126984126) internal successors, (152), 63 states have internal predecessors, (152), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 09:52:36,292 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 227 transitions. [2024-11-08 09:52:36,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-11-08 09:52:36,294 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:36,294 INFO L215 NwaCegarLoop]: trace histogram [60, 60, 57, 57, 39, 18, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:52:36,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-08 09:52:36,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-08 09:52:36,495 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:36,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:36,495 INFO L85 PathProgramCache]: Analyzing trace with hash 807650724, now seen corresponding path program 8 times [2024-11-08 09:52:36,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:36,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346755] [2024-11-08 09:52:36,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:36,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:36,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-11-08 09:52:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:36,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-11-08 09:52:36,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:36,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-11-08 09:52:36,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:36,763 INFO L134 CoverageAnalysis]: Checked inductivity of 8610 backedges. 253 proven. 2307 refuted. 0 times theorem prover too weak. 6050 trivial. 0 not checked. [2024-11-08 09:52:36,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:36,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346755] [2024-11-08 09:52:36,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346755] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:52:36,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445032575] [2024-11-08 09:52:36,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 09:52:36,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:36,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:36,768 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:52:36,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 09:52:37,001 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 09:52:37,002 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:52:37,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 1107 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 09:52:37,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:52:37,032 INFO L134 CoverageAnalysis]: Checked inductivity of 8610 backedges. 1029 proven. 57 refuted. 0 times theorem prover too weak. 7524 trivial. 0 not checked. [2024-11-08 09:52:37,032 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:52:37,119 INFO L134 CoverageAnalysis]: Checked inductivity of 8610 backedges. 253 proven. 2307 refuted. 0 times theorem prover too weak. 6050 trivial. 0 not checked. [2024-11-08 09:52:37,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445032575] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:52:37,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:52:37,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-08 09:52:37,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102016736] [2024-11-08 09:52:37,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:52:37,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 09:52:37,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:52:37,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 09:52:37,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2024-11-08 09:52:37,121 INFO L87 Difference]: Start difference. First operand 209 states and 227 transitions. Second operand has 16 states, 16 states have (on average 4.5625) internal successors, (73), 16 states have internal predecessors, (73), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 09:52:37,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:52:37,162 INFO L93 Difference]: Finished difference Result 317 states and 362 transitions. [2024-11-08 09:52:37,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 09:52:37,163 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.5625) internal successors, (73), 16 states have internal predecessors, (73), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 332 [2024-11-08 09:52:37,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:52:37,164 INFO L225 Difference]: With dead ends: 317 [2024-11-08 09:52:37,164 INFO L226 Difference]: Without dead ends: 233 [2024-11-08 09:52:37,165 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 677 GetRequests, 663 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2024-11-08 09:52:37,165 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:52:37,165 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 123 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:52:37,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-11-08 09:52:37,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2024-11-08 09:52:37,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 228 states have (on average 1.0745614035087718) internal successors, (245), 228 states have internal predecessors, (245), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:52:37,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 251 transitions. [2024-11-08 09:52:37,171 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 251 transitions. Word has length 332 [2024-11-08 09:52:37,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:52:37,171 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 251 transitions. [2024-11-08 09:52:37,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.5625) internal successors, (73), 16 states have internal predecessors, (73), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 09:52:37,172 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 251 transitions. [2024-11-08 09:52:37,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2024-11-08 09:52:37,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:37,175 INFO L215 NwaCegarLoop]: trace histogram [81, 81, 60, 60, 42, 39, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:52:37,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-08 09:52:37,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-08 09:52:37,375 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:37,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:37,376 INFO L85 PathProgramCache]: Analyzing trace with hash 2042170404, now seen corresponding path program 9 times [2024-11-08 09:52:37,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:37,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537607524] [2024-11-08 09:52:37,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:37,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:37,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-11-08 09:52:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:37,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-11-08 09:52:37,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:37,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-11-08 09:52:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:37,875 INFO L134 CoverageAnalysis]: Checked inductivity of 13614 backedges. 557 proven. 4791 refuted. 0 times theorem prover too weak. 8266 trivial. 0 not checked. [2024-11-08 09:52:37,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:37,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537607524] [2024-11-08 09:52:37,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537607524] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:52:37,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349846942] [2024-11-08 09:52:37,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 09:52:37,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:37,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:37,878 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:52:37,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 09:52:38,145 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-08 09:52:38,146 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:52:38,150 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 09:52:38,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:52:38,245 INFO L134 CoverageAnalysis]: Checked inductivity of 13614 backedges. 4492 proven. 36 refuted. 0 times theorem prover too weak. 9086 trivial. 0 not checked. [2024-11-08 09:52:38,245 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:52:38,363 INFO L134 CoverageAnalysis]: Checked inductivity of 13614 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 13578 trivial. 0 not checked. [2024-11-08 09:52:38,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349846942] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:52:38,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:52:38,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9, 9] total 31 [2024-11-08 09:52:38,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362216975] [2024-11-08 09:52:38,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:52:38,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-08 09:52:38,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:52:38,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-08 09:52:38,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2024-11-08 09:52:38,366 INFO L87 Difference]: Start difference. First operand 233 states and 251 transitions. Second operand has 31 states, 31 states have (on average 3.3870967741935485) internal successors, (105), 31 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 09:52:38,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:52:38,448 INFO L93 Difference]: Finished difference Result 361 states and 407 transitions. [2024-11-08 09:52:38,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-08 09:52:38,449 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.3870967741935485) internal successors, (105), 31 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 404 [2024-11-08 09:52:38,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:52:38,451 INFO L225 Difference]: With dead ends: 361 [2024-11-08 09:52:38,451 INFO L226 Difference]: Without dead ends: 253 [2024-11-08 09:52:38,453 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 829 GetRequests, 800 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2024-11-08 09:52:38,453 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 3 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:52:38,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 220 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:52:38,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-08 09:52:38,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 252. [2024-11-08 09:52:38,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 247 states have (on average 1.0688259109311742) internal successors, (264), 247 states have internal predecessors, (264), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:52:38,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 270 transitions. [2024-11-08 09:52:38,461 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 270 transitions. Word has length 404 [2024-11-08 09:52:38,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:52:38,461 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 270 transitions. [2024-11-08 09:52:38,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.3870967741935485) internal successors, (105), 31 states have internal predecessors, (105), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 09:52:38,461 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 270 transitions. [2024-11-08 09:52:38,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2024-11-08 09:52:38,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:38,463 INFO L215 NwaCegarLoop]: trace histogram [84, 84, 60, 60, 45, 39, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:52:38,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-08 09:52:38,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:38,664 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:38,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:38,665 INFO L85 PathProgramCache]: Analyzing trace with hash 2067191105, now seen corresponding path program 10 times [2024-11-08 09:52:38,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:38,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786510032] [2024-11-08 09:52:38,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:38,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:39,019 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-11-08 09:52:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:39,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-11-08 09:52:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:39,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2024-11-08 09:52:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:39,196 INFO L134 CoverageAnalysis]: Checked inductivity of 14521 backedges. 595 proven. 5169 refuted. 0 times theorem prover too weak. 8757 trivial. 0 not checked. [2024-11-08 09:52:39,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:39,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786510032] [2024-11-08 09:52:39,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786510032] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:52:39,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430063601] [2024-11-08 09:52:39,196 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 09:52:39,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:39,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:39,198 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:52:39,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 09:52:39,472 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 09:52:39,472 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:52:39,477 INFO L255 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 09:52:39,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:52:39,537 INFO L134 CoverageAnalysis]: Checked inductivity of 14521 backedges. 6753 proven. 345 refuted. 0 times theorem prover too weak. 7423 trivial. 0 not checked. [2024-11-08 09:52:39,537 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:52:39,822 INFO L134 CoverageAnalysis]: Checked inductivity of 14521 backedges. 3007 proven. 2757 refuted. 0 times theorem prover too weak. 8757 trivial. 0 not checked. [2024-11-08 09:52:39,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430063601] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:52:39,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:52:39,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 33 [2024-11-08 09:52:39,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446327845] [2024-11-08 09:52:39,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:52:39,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-08 09:52:39,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:52:39,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-08 09:52:39,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 09:52:39,824 INFO L87 Difference]: Start difference. First operand 252 states and 270 transitions. Second operand has 33 states, 33 states have (on average 3.8484848484848486) internal successors, (127), 33 states have internal predecessors, (127), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 09:52:39,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:52:39,909 INFO L93 Difference]: Finished difference Result 427 states and 480 transitions. [2024-11-08 09:52:39,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-08 09:52:39,910 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.8484848484848486) internal successors, (127), 33 states have internal predecessors, (127), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 429 [2024-11-08 09:52:39,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:52:39,911 INFO L225 Difference]: With dead ends: 427 [2024-11-08 09:52:39,911 INFO L226 Difference]: Without dead ends: 300 [2024-11-08 09:52:39,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 880 GetRequests, 848 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 09:52:39,912 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:52:39,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 171 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:52:39,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2024-11-08 09:52:39,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2024-11-08 09:52:39,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 295 states have (on average 1.0576271186440678) internal successors, (312), 295 states have internal predecessors, (312), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:52:39,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 318 transitions. [2024-11-08 09:52:39,920 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 318 transitions. Word has length 429 [2024-11-08 09:52:39,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:52:39,921 INFO L471 AbstractCegarLoop]: Abstraction has 300 states and 318 transitions. [2024-11-08 09:52:39,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.8484848484848486) internal successors, (127), 33 states have internal predecessors, (127), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 09:52:39,921 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 318 transitions. [2024-11-08 09:52:39,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2024-11-08 09:52:39,923 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:39,923 INFO L215 NwaCegarLoop]: trace histogram [132, 132, 93, 60, 60, 39, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:52:39,938 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-08 09:52:40,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 09:52:40,124 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:40,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:40,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1568942015, now seen corresponding path program 11 times [2024-11-08 09:52:40,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:40,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017810459] [2024-11-08 09:52:40,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:40,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:40,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:40,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-11-08 09:52:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:40,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-11-08 09:52:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:40,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2024-11-08 09:52:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:40,664 INFO L134 CoverageAnalysis]: Checked inductivity of 30145 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 29949 trivial. 0 not checked. [2024-11-08 09:52:40,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:40,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017810459] [2024-11-08 09:52:40,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017810459] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:52:40,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715270005] [2024-11-08 09:52:40,665 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 09:52:40,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:40,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:40,667 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:52:40,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 09:52:40,877 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-11-08 09:52:40,878 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:52:40,879 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 09:52:40,883 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:52:41,067 INFO L134 CoverageAnalysis]: Checked inductivity of 30145 backedges. 13101 proven. 301 refuted. 0 times theorem prover too weak. 16743 trivial. 0 not checked. [2024-11-08 09:52:41,067 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:52:41,374 INFO L134 CoverageAnalysis]: Checked inductivity of 30145 backedges. 1305 proven. 4209 refuted. 0 times theorem prover too weak. 24631 trivial. 0 not checked. [2024-11-08 09:52:41,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715270005] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:52:41,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:52:41,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 47 [2024-11-08 09:52:41,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976828243] [2024-11-08 09:52:41,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:52:41,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-08 09:52:41,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:52:41,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-08 09:52:41,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=631, Invalid=1531, Unknown=0, NotChecked=0, Total=2162 [2024-11-08 09:52:41,378 INFO L87 Difference]: Start difference. First operand 300 states and 318 transitions. Second operand has 47 states, 47 states have (on average 3.2127659574468086) internal successors, (151), 47 states have internal predecessors, (151), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-08 09:52:41,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:52:41,548 INFO L93 Difference]: Finished difference Result 526 states and 596 transitions. [2024-11-08 09:52:41,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-08 09:52:41,549 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.2127659574468086) internal successors, (151), 47 states have internal predecessors, (151), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 573 [2024-11-08 09:52:41,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:52:41,551 INFO L225 Difference]: With dead ends: 526 [2024-11-08 09:52:41,551 INFO L226 Difference]: Without dead ends: 351 [2024-11-08 09:52:41,552 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1167 GetRequests, 1120 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=631, Invalid=1531, Unknown=0, NotChecked=0, Total=2162 [2024-11-08 09:52:41,553 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:52:41,553 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 190 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:52:41,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2024-11-08 09:52:41,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 350. [2024-11-08 09:52:41,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 345 states have (on average 1.0956521739130434) internal successors, (378), 345 states have internal predecessors, (378), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:52:41,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 384 transitions. [2024-11-08 09:52:41,561 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 384 transitions. Word has length 573 [2024-11-08 09:52:41,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:52:41,562 INFO L471 AbstractCegarLoop]: Abstraction has 350 states and 384 transitions. [2024-11-08 09:52:41,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.2127659574468086) internal successors, (151), 47 states have internal predecessors, (151), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-08 09:52:41,562 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 384 transitions. [2024-11-08 09:52:41,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 720 [2024-11-08 09:52:41,565 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:41,565 INFO L215 NwaCegarLoop]: trace histogram [180, 180, 93, 87, 60, 60, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:52:41,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-08 09:52:41,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 09:52:41,766 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:41,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:41,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1500400063, now seen corresponding path program 12 times [2024-11-08 09:52:41,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:41,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270122043] [2024-11-08 09:52:41,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:41,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:41,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:42,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-11-08 09:52:42,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:42,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-11-08 09:52:42,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:42,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2024-11-08 09:52:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:42,506 INFO L134 CoverageAnalysis]: Checked inductivity of 52710 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 52485 trivial. 0 not checked. [2024-11-08 09:52:42,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:42,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270122043] [2024-11-08 09:52:42,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270122043] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:52:42,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016717478] [2024-11-08 09:52:42,507 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 09:52:42,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:42,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:42,509 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:52:42,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-08 09:52:44,626 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 33 check-sat command(s) [2024-11-08 09:52:44,627 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:52:44,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-08 09:52:44,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:52:44,691 INFO L134 CoverageAnalysis]: Checked inductivity of 52710 backedges. 21850 proven. 225 refuted. 0 times theorem prover too weak. 30635 trivial. 0 not checked. [2024-11-08 09:52:44,691 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:52:44,970 INFO L134 CoverageAnalysis]: Checked inductivity of 52710 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 52485 trivial. 0 not checked. [2024-11-08 09:52:44,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016717478] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:52:44,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:52:44,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 35 [2024-11-08 09:52:44,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96840887] [2024-11-08 09:52:44,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:52:44,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-08 09:52:44,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:52:44,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-08 09:52:44,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 09:52:44,973 INFO L87 Difference]: Start difference. First operand 350 states and 384 transitions. Second operand has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 35 states have internal predecessors, (94), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 09:52:45,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:52:45,052 INFO L93 Difference]: Finished difference Result 575 states and 656 transitions. [2024-11-08 09:52:45,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-08 09:52:45,053 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 35 states have internal predecessors, (94), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 719 [2024-11-08 09:52:45,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:52:45,055 INFO L225 Difference]: With dead ends: 575 [2024-11-08 09:52:45,055 INFO L226 Difference]: Without dead ends: 384 [2024-11-08 09:52:45,055 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1460 GetRequests, 1427 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 09:52:45,056 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:52:45,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 196 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:52:45,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2024-11-08 09:52:45,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2024-11-08 09:52:45,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 379 states have (on average 1.087071240105541) internal successors, (412), 379 states have internal predecessors, (412), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:52:45,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 418 transitions. [2024-11-08 09:52:45,067 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 418 transitions. Word has length 719 [2024-11-08 09:52:45,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:52:45,067 INFO L471 AbstractCegarLoop]: Abstraction has 384 states and 418 transitions. [2024-11-08 09:52:45,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 35 states have internal predecessors, (94), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 09:52:45,068 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 418 transitions. [2024-11-08 09:52:45,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2024-11-08 09:52:45,071 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:45,071 INFO L215 NwaCegarLoop]: trace histogram [180, 180, 93, 87, 60, 60, 32, 32, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:52:45,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-08 09:52:45,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 09:52:45,272 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:45,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:45,272 INFO L85 PathProgramCache]: Analyzing trace with hash -443113827, now seen corresponding path program 13 times [2024-11-08 09:52:45,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:45,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789193810] [2024-11-08 09:52:45,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:45,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:46,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-11-08 09:52:46,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:46,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-11-08 09:52:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:46,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2024-11-08 09:52:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:46,619 INFO L134 CoverageAnalysis]: Checked inductivity of 53509 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 52485 trivial. 0 not checked. [2024-11-08 09:52:46,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:52:46,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789193810] [2024-11-08 09:52:46,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789193810] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:52:46,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302004852] [2024-11-08 09:52:46,620 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 09:52:46,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:46,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:46,622 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:52:46,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-08 09:52:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:52:47,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 1973 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-08 09:52:47,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:52:47,099 INFO L134 CoverageAnalysis]: Checked inductivity of 53509 backedges. 21850 proven. 1024 refuted. 0 times theorem prover too weak. 30635 trivial. 0 not checked. [2024-11-08 09:52:47,099 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:52:47,944 INFO L134 CoverageAnalysis]: Checked inductivity of 53509 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 52485 trivial. 0 not checked. [2024-11-08 09:52:47,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302004852] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:52:47,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:52:47,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 62 [2024-11-08 09:52:47,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838068581] [2024-11-08 09:52:47,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:52:47,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-08 09:52:47,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:52:47,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-08 09:52:47,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2024-11-08 09:52:47,948 INFO L87 Difference]: Start difference. First operand 384 states and 418 transitions. Second operand has 62 states, 62 states have (on average 2.4193548387096775) internal successors, (150), 62 states have internal predecessors, (150), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 09:52:48,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:52:48,089 INFO L93 Difference]: Finished difference Result 629 states and 720 transitions. [2024-11-08 09:52:48,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-08 09:52:48,090 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.4193548387096775) internal successors, (150), 62 states have internal predecessors, (150), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 753 [2024-11-08 09:52:48,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:52:48,092 INFO L225 Difference]: With dead ends: 629 [2024-11-08 09:52:48,092 INFO L226 Difference]: Without dead ends: 438 [2024-11-08 09:52:48,093 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1545 GetRequests, 1478 SyntacticMatches, 7 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2024-11-08 09:52:48,093 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:52:48,095 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 148 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:52:48,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2024-11-08 09:52:48,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 438. [2024-11-08 09:52:48,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 433 states have (on average 1.0762124711316396) internal successors, (466), 433 states have internal predecessors, (466), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 09:52:48,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 472 transitions. [2024-11-08 09:52:48,104 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 472 transitions. Word has length 753 [2024-11-08 09:52:48,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:52:48,105 INFO L471 AbstractCegarLoop]: Abstraction has 438 states and 472 transitions. [2024-11-08 09:52:48,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.4193548387096775) internal successors, (150), 62 states have internal predecessors, (150), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 09:52:48,105 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 472 transitions. [2024-11-08 09:52:48,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2024-11-08 09:52:48,108 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:52:48,109 INFO L215 NwaCegarLoop]: trace histogram [180, 180, 93, 87, 60, 60, 59, 59, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:52:48,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-08 09:52:48,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:48,309 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:52:48,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:52:48,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1348616601, now seen corresponding path program 14 times [2024-11-08 09:52:48,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:52:48,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418158874] [2024-11-08 09:52:48,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:52:48,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:52:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 09:52:57,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1856459816] [2024-11-08 09:52:57,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 09:52:57,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:52:57,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:52:57,369 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:52:57,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process