./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-lopstr16/flag_loopdep_simple.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-lopstr16/flag_loopdep_simple.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 2e1c46549da470f14361a9b2a5fb79d079bbffb4006138f4fef05b9b152f9be7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 09:22:18,393 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 09:22:18,486 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 09:22:18,491 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 09:22:18,492 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 09:22:18,527 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 09:22:18,528 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 09:22:18,529 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 09:22:18,529 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 09:22:18,530 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 09:22:18,530 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 09:22:18,531 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 09:22:18,531 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 09:22:18,535 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 09:22:18,535 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 09:22:18,535 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 09:22:18,536 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 09:22:18,536 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 09:22:18,536 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 09:22:18,536 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 09:22:18,536 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 09:22:18,538 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 09:22:18,538 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 09:22:18,538 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 09:22:18,539 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 09:22:18,539 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 09:22:18,539 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 09:22:18,539 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 09:22:18,539 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 09:22:18,540 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 09:22:18,540 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 09:22:18,540 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 09:22:18,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:22:18,541 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 09:22:18,541 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 09:22:18,541 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 09:22:18,543 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 09:22:18,544 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 09:22:18,544 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 09:22:18,544 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 09:22:18,544 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 09:22:18,545 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 09:22:18,545 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e1c46549da470f14361a9b2a5fb79d079bbffb4006138f4fef05b9b152f9be7 [2024-11-18 09:22:18,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 09:22:18,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 09:22:18,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 09:22:18,847 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 09:22:18,847 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 09:22:18,849 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-lopstr16/flag_loopdep_simple.i [2024-11-18 09:22:20,300 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 09:22:20,498 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 09:22:20,499 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-lopstr16/flag_loopdep_simple.i [2024-11-18 09:22:20,509 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb8bb850a/91a12fe6d3b74217b316874095629672/FLAG277c0f816 [2024-11-18 09:22:20,527 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb8bb850a/91a12fe6d3b74217b316874095629672 [2024-11-18 09:22:20,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 09:22:20,532 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 09:22:20,536 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 09:22:20,536 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 09:22:20,542 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 09:22:20,542 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:22:20" (1/1) ... [2024-11-18 09:22:20,543 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44dafe82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:22:20, skipping insertion in model container [2024-11-18 09:22:20,543 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:22:20" (1/1) ... [2024-11-18 09:22:20,567 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 09:22:20,764 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-lopstr16/flag_loopdep_simple.i[812,825] [2024-11-18 09:22:20,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:22:20,799 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 09:22:20,811 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-lopstr16/flag_loopdep_simple.i[812,825] [2024-11-18 09:22:20,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:22:20,840 INFO L204 MainTranslator]: Completed translation [2024-11-18 09:22:20,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:22:20 WrapperNode [2024-11-18 09:22:20,841 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 09:22:20,842 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 09:22:20,842 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 09:22:20,843 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 09:22:20,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:22:20" (1/1) ... [2024-11-18 09:22:20,858 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:22:20" (1/1) ... [2024-11-18 09:22:20,876 INFO L138 Inliner]: procedures = 17, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2024-11-18 09:22:20,876 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 09:22:20,877 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 09:22:20,877 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 09:22:20,877 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 09:22:20,887 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:22:20" (1/1) ... [2024-11-18 09:22:20,888 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:22:20" (1/1) ... [2024-11-18 09:22:20,892 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:22:20" (1/1) ... [2024-11-18 09:22:20,917 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-18 09:22:20,918 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:22:20" (1/1) ... [2024-11-18 09:22:20,918 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:22:20" (1/1) ... [2024-11-18 09:22:20,928 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:22:20" (1/1) ... [2024-11-18 09:22:20,932 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:22:20" (1/1) ... [2024-11-18 09:22:20,934 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:22:20" (1/1) ... [2024-11-18 09:22:20,937 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:22:20" (1/1) ... [2024-11-18 09:22:20,938 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 09:22:20,940 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 09:22:20,940 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 09:22:20,940 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 09:22:20,941 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:22:20" (1/1) ... [2024-11-18 09:22:20,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:22:20,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:22:20,972 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 09:22:20,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 09:22:21,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 09:22:21,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 09:22:21,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 09:22:21,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 09:22:21,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 09:22:21,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 09:22:21,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 09:22:21,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 09:22:21,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 09:22:21,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 09:22:21,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 09:22:21,110 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 09:22:21,112 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 09:22:21,281 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-11-18 09:22:21,282 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 09:22:21,294 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 09:22:21,294 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-18 09:22:21,294 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:22:21 BoogieIcfgContainer [2024-11-18 09:22:21,295 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 09:22:21,297 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 09:22:21,297 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 09:22:21,301 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 09:22:21,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:22:20" (1/3) ... [2024-11-18 09:22:21,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f9624ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:22:21, skipping insertion in model container [2024-11-18 09:22:21,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:22:20" (2/3) ... [2024-11-18 09:22:21,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f9624ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:22:21, skipping insertion in model container [2024-11-18 09:22:21,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:22:21" (3/3) ... [2024-11-18 09:22:21,305 INFO L112 eAbstractionObserver]: Analyzing ICFG flag_loopdep_simple.i [2024-11-18 09:22:21,323 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 09:22:21,324 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 09:22:21,385 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 09:22:21,391 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;@7b12f55d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 09:22:21,392 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 09:22:21,396 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:21,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-18 09:22:21,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:22:21,402 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:22:21,403 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:22:21,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:22:21,408 INFO L85 PathProgramCache]: Analyzing trace with hash -2060710478, now seen corresponding path program 1 times [2024-11-18 09:22:21,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:22:21,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923643948] [2024-11-18 09:22:21,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:22:21,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:22:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:22:21,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:22:21,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:22:21,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923643948] [2024-11-18 09:22:21,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923643948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:22:21,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:22:21,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:22:21,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693559427] [2024-11-18 09:22:21,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:22:21,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:22:21,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:22:21,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:22:21,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:22:21,756 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:21,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:22:21,785 INFO L93 Difference]: Finished difference Result 38 states and 54 transitions. [2024-11-18 09:22:21,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:22:21,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-18 09:22:21,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:22:21,796 INFO L225 Difference]: With dead ends: 38 [2024-11-18 09:22:21,796 INFO L226 Difference]: Without dead ends: 18 [2024-11-18 09:22:21,798 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:22:21,801 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 1 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 41 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 [2024-11-18 09:22:21,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 41 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:22:21,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-18 09:22:21,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2024-11-18 09:22:21,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:21,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2024-11-18 09:22:21,827 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2024-11-18 09:22:21,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:22:21,828 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2024-11-18 09:22:21,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:21,828 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2024-11-18 09:22:21,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-18 09:22:21,829 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:22:21,829 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:22:21,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 09:22:21,830 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:22:21,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:22:21,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1264138591, now seen corresponding path program 1 times [2024-11-18 09:22:21,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:22:21,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35273613] [2024-11-18 09:22:21,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:22:21,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:22:21,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:22:21,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 09:22:21,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:22:21,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35273613] [2024-11-18 09:22:21,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35273613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:22:21,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:22:21,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:22:21,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176630818] [2024-11-18 09:22:21,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:22:21,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:22:21,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:22:21,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:22:21,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:22:21,930 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:21,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:22:21,966 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2024-11-18 09:22:21,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:22:21,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-18 09:22:21,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:22:21,969 INFO L225 Difference]: With dead ends: 35 [2024-11-18 09:22:21,969 INFO L226 Difference]: Without dead ends: 27 [2024-11-18 09:22:21,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:22:21,970 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 10 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:22:21,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 26 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:22:21,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-18 09:22:21,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 18. [2024-11-18 09:22:21,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:21,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-11-18 09:22:21,982 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 12 [2024-11-18 09:22:21,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:22:21,983 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-11-18 09:22:21,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:21,983 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-11-18 09:22:21,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-18 09:22:21,984 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:22:21,984 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:22:21,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 09:22:21,985 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:22:21,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:22:21,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1458340319, now seen corresponding path program 1 times [2024-11-18 09:22:21,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:22:21,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552569632] [2024-11-18 09:22:21,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:22:21,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:22:22,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:22:22,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 09:22:22,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:22:22,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552569632] [2024-11-18 09:22:22,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552569632] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:22:22,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905637032] [2024-11-18 09:22:22,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:22:22,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:22:22,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:22:22,111 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:22:22,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 09:22:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:22:22,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:22:22,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:22:22,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 09:22:22,227 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:22:22,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905637032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:22:22,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:22:22,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:22:22,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968947430] [2024-11-18 09:22:22,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:22:22,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:22:22,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:22:22,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:22:22,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:22:22,234 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:22,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:22:22,255 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2024-11-18 09:22:22,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:22:22,255 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-18 09:22:22,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:22:22,256 INFO L225 Difference]: With dead ends: 32 [2024-11-18 09:22:22,256 INFO L226 Difference]: Without dead ends: 18 [2024-11-18 09:22:22,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:22:22,258 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:22:22,259 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 38 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:22:22,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-18 09:22:22,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-18 09:22:22,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:22,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2024-11-18 09:22:22,267 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 15 [2024-11-18 09:22:22,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:22:22,268 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2024-11-18 09:22:22,268 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:22,268 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2024-11-18 09:22:22,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-18 09:22:22,270 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:22:22,270 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:22:22,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 09:22:22,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:22:22,471 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:22:22,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:22:22,472 INFO L85 PathProgramCache]: Analyzing trace with hash 2027280351, now seen corresponding path program 1 times [2024-11-18 09:22:22,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:22:22,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614177545] [2024-11-18 09:22:22,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:22:22,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:22:22,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:22:22,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 09:22:22,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:22:22,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614177545] [2024-11-18 09:22:22,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614177545] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:22:22,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23588703] [2024-11-18 09:22:22,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:22:22,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:22:22,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:22:22,552 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:22:22,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 09:22:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:22:22,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 09:22:22,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:22:22,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 09:22:22,703 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:22:22,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 09:22:22,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23588703] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:22:22,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:22:22,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-18 09:22:22,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882428508] [2024-11-18 09:22:22,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:22:22,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 09:22:22,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:22:22,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 09:22:22,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-18 09:22:22,754 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:22,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:22:22,826 INFO L93 Difference]: Finished difference Result 56 states and 67 transitions. [2024-11-18 09:22:22,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 09:22:22,828 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-18 09:22:22,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:22:22,829 INFO L225 Difference]: With dead ends: 56 [2024-11-18 09:22:22,830 INFO L226 Difference]: Without dead ends: 43 [2024-11-18 09:22:22,831 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-18 09:22:22,832 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 25 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:22:22,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 53 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:22:22,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-18 09:22:22,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27. [2024-11-18 09:22:22,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:22,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2024-11-18 09:22:22,838 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 15 [2024-11-18 09:22:22,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:22:22,840 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2024-11-18 09:22:22,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:22,841 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-11-18 09:22:22,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-18 09:22:22,842 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:22:22,842 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:22:22,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 09:22:23,046 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,SelfDestructingSolverStorable3 [2024-11-18 09:22:23,047 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:22:23,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:22:23,048 INFO L85 PathProgramCache]: Analyzing trace with hash 2044266853, now seen corresponding path program 2 times [2024-11-18 09:22:23,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:22:23,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83801380] [2024-11-18 09:22:23,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:22:23,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:22:23,077 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:22:23,078 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:22:23,225 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 09:22:23,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:22:23,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83801380] [2024-11-18 09:22:23,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83801380] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:22:23,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781790053] [2024-11-18 09:22:23,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:22:23,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:22:23,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:22:23,228 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:22:23,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 09:22:23,296 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:22:23,299 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:22:23,301 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 09:22:23,302 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:22:23,420 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 09:22:23,420 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:22:23,550 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 09:22:23,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781790053] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:22:23,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:22:23,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-11-18 09:22:23,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801608135] [2024-11-18 09:22:23,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:22:23,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 09:22:23,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:22:23,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 09:22:23,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=146, Unknown=0, NotChecked=0, Total=272 [2024-11-18 09:22:23,557 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:23,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:22:23,674 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2024-11-18 09:22:23,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 09:22:23,677 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-18 09:22:23,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:22:23,678 INFO L225 Difference]: With dead ends: 55 [2024-11-18 09:22:23,678 INFO L226 Difference]: Without dead ends: 39 [2024-11-18 09:22:23,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=146, Unknown=0, NotChecked=0, Total=272 [2024-11-18 09:22:23,679 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:22:23,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 45 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:22:23,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-18 09:22:23,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-18 09:22:23,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.105263157894737) internal successors, (42), 38 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:23,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2024-11-18 09:22:23,688 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 24 [2024-11-18 09:22:23,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:22:23,688 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2024-11-18 09:22:23,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:23,688 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2024-11-18 09:22:23,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-18 09:22:23,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:22:23,689 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:22:23,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 09:22:23,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:22:23,891 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:22:23,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:22:23,891 INFO L85 PathProgramCache]: Analyzing trace with hash 2120045553, now seen corresponding path program 3 times [2024-11-18 09:22:23,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:22:23,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22033372] [2024-11-18 09:22:23,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:22:23,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:22:23,915 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 09:22:23,915 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:22:24,119 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-11-18 09:22:24,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:22:24,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22033372] [2024-11-18 09:22:24,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22033372] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:22:24,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176250587] [2024-11-18 09:22:24,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:22:24,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:22:24,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:22:24,122 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:22:24,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 09:22:24,186 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 09:22:24,187 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:22:24,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 09:22:24,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:22:24,219 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-18 09:22:24,220 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:22:24,257 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-18 09:22:24,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176250587] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:22:24,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:22:24,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 14 [2024-11-18 09:22:24,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043138213] [2024-11-18 09:22:24,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:22:24,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 09:22:24,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:22:24,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 09:22:24,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2024-11-18 09:22:24,260 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:24,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:22:24,440 INFO L93 Difference]: Finished difference Result 93 states and 107 transitions. [2024-11-18 09:22:24,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 09:22:24,441 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-18 09:22:24,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:22:24,442 INFO L225 Difference]: With dead ends: 93 [2024-11-18 09:22:24,443 INFO L226 Difference]: Without dead ends: 85 [2024-11-18 09:22:24,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=247, Unknown=0, NotChecked=0, Total=380 [2024-11-18 09:22:24,445 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 99 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:22:24,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 86 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:22:24,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-18 09:22:24,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 54. [2024-11-18 09:22:24,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 53 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:24,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2024-11-18 09:22:24,461 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 36 [2024-11-18 09:22:24,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:22:24,461 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2024-11-18 09:22:24,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:24,463 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2024-11-18 09:22:24,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-18 09:22:24,464 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:22:24,464 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:22:24,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 09:22:24,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:22:24,665 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:22:24,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:22:24,666 INFO L85 PathProgramCache]: Analyzing trace with hash -2110791866, now seen corresponding path program 1 times [2024-11-18 09:22:24,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:22:24,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845759290] [2024-11-18 09:22:24,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:22:24,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:22:24,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:22:24,745 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-11-18 09:22:24,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:22:24,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845759290] [2024-11-18 09:22:24,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845759290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:22:24,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:22:24,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:22:24,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952374460] [2024-11-18 09:22:24,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:22:24,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:22:24,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:22:24,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:22:24,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:22:24,749 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:24,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:22:24,755 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2024-11-18 09:22:24,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:22:24,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-18 09:22:24,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:22:24,758 INFO L225 Difference]: With dead ends: 61 [2024-11-18 09:22:24,758 INFO L226 Difference]: Without dead ends: 54 [2024-11-18 09:22:24,758 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:22:24,759 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:22:24,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 18 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:22:24,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-18 09:22:24,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-18 09:22:24,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 53 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:24,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2024-11-18 09:22:24,773 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 51 [2024-11-18 09:22:24,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:22:24,774 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2024-11-18 09:22:24,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:24,775 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2024-11-18 09:22:24,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-18 09:22:24,778 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:22:24,778 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:22:24,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 09:22:24,778 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:22:24,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:22:24,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1330435568, now seen corresponding path program 1 times [2024-11-18 09:22:24,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:22:24,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471586509] [2024-11-18 09:22:24,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:22:24,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:22:24,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:22:25,147 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-18 09:22:25,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:22:25,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471586509] [2024-11-18 09:22:25,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471586509] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:22:25,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827251167] [2024-11-18 09:22:25,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:22:25,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:22:25,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:22:25,150 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:22:25,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 09:22:25,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:22:25,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 09:22:25,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:22:25,554 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-18 09:22:25,555 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:22:25,934 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-18 09:22:25,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827251167] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:22:25,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:22:25,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 35 [2024-11-18 09:22:25,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002478111] [2024-11-18 09:22:25,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:22:25,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-18 09:22:25,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:22:25,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-18 09:22:25,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=540, Invalid=650, Unknown=0, NotChecked=0, Total=1190 [2024-11-18 09:22:25,940 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 35 states, 35 states have (on average 2.2857142857142856) internal successors, (80), 35 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:26,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:22:26,018 INFO L93 Difference]: Finished difference Result 109 states and 124 transitions. [2024-11-18 09:22:26,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-18 09:22:26,019 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.2857142857142856) internal successors, (80), 35 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-18 09:22:26,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:22:26,020 INFO L225 Difference]: With dead ends: 109 [2024-11-18 09:22:26,020 INFO L226 Difference]: Without dead ends: 78 [2024-11-18 09:22:26,021 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=540, Invalid=650, Unknown=0, NotChecked=0, Total=1190 [2024-11-18 09:22:26,021 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 3 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:22:26,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 81 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:22:26,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-18 09:22:26,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-18 09:22:26,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 77 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:26,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2024-11-18 09:22:26,037 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 53 [2024-11-18 09:22:26,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:22:26,038 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2024-11-18 09:22:26,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.2857142857142856) internal successors, (80), 35 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:26,038 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2024-11-18 09:22:26,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-18 09:22:26,039 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:22:26,039 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:22:26,057 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 09:22:26,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:22:26,240 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:22:26,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:22:26,241 INFO L85 PathProgramCache]: Analyzing trace with hash 526974456, now seen corresponding path program 2 times [2024-11-18 09:22:26,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:22:26,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084657835] [2024-11-18 09:22:26,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:22:26,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:22:26,290 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:22:26,291 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:22:26,960 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-18 09:22:26,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:22:26,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084657835] [2024-11-18 09:22:26,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084657835] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:22:26,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794513790] [2024-11-18 09:22:26,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:22:26,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:22:26,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:22:26,964 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:22:26,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 09:22:27,076 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:22:27,077 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:22:27,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-18 09:22:27,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:22:27,604 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-18 09:22:27,605 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:22:28,435 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-18 09:22:28,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794513790] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:22:28,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:22:28,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 71 [2024-11-18 09:22:28,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525261695] [2024-11-18 09:22:28,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:22:28,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-18 09:22:28,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:22:28,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-18 09:22:28,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2254, Invalid=2716, Unknown=0, NotChecked=0, Total=4970 [2024-11-18 09:22:28,442 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand has 71 states, 71 states have (on average 2.140845070422535) internal successors, (152), 71 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:28,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:22:28,611 INFO L93 Difference]: Finished difference Result 157 states and 184 transitions. [2024-11-18 09:22:28,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-18 09:22:28,613 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.140845070422535) internal successors, (152), 71 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-18 09:22:28,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:22:28,615 INFO L225 Difference]: With dead ends: 157 [2024-11-18 09:22:28,615 INFO L226 Difference]: Without dead ends: 126 [2024-11-18 09:22:28,616 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2045 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2254, Invalid=2716, Unknown=0, NotChecked=0, Total=4970 [2024-11-18 09:22:28,617 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:22:28,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 68 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:22:28,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-18 09:22:28,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2024-11-18 09:22:28,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.024) internal successors, (128), 125 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:28,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 128 transitions. [2024-11-18 09:22:28,630 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 128 transitions. Word has length 77 [2024-11-18 09:22:28,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:22:28,630 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 128 transitions. [2024-11-18 09:22:28,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.140845070422535) internal successors, (152), 71 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:28,631 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 128 transitions. [2024-11-18 09:22:28,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-18 09:22:28,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:22:28,632 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:22:28,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 09:22:28,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:22:28,837 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:22:28,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:22:28,837 INFO L85 PathProgramCache]: Analyzing trace with hash -374145592, now seen corresponding path program 3 times [2024-11-18 09:22:28,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:22:28,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875188238] [2024-11-18 09:22:28,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:22:28,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:22:28,895 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-18 09:22:28,895 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:22:29,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2170 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2142 trivial. 0 not checked. [2024-11-18 09:22:29,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:22:29,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875188238] [2024-11-18 09:22:29,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875188238] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:22:29,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288643933] [2024-11-18 09:22:29,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:22:29,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:22:29,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:22:29,130 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:22:29,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 09:22:29,245 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-18 09:22:29,245 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:22:29,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-18 09:22:29,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:22:29,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2170 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2142 trivial. 0 not checked. [2024-11-18 09:22:29,564 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:22:29,670 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-18 09:22:29,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 11 [2024-11-18 09:22:29,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2170 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 2142 trivial. 0 not checked. [2024-11-18 09:22:29,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288643933] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:22:29,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:22:29,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 19 [2024-11-18 09:22:29,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92632621] [2024-11-18 09:22:29,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:22:29,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-18 09:22:29,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:22:29,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-18 09:22:29,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-11-18 09:22:29,683 INFO L87 Difference]: Start difference. First operand 126 states and 128 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:29,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:22:29,808 INFO L93 Difference]: Finished difference Result 135 states and 137 transitions. [2024-11-18 09:22:29,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 09:22:29,809 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2024-11-18 09:22:29,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:22:29,810 INFO L225 Difference]: With dead ends: 135 [2024-11-18 09:22:29,810 INFO L226 Difference]: Without dead ends: 133 [2024-11-18 09:22:29,810 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2024-11-18 09:22:29,811 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 22 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:22:29,811 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 118 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:22:29,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-18 09:22:29,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2024-11-18 09:22:29,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.023076923076923) internal successors, (133), 130 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:29,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2024-11-18 09:22:29,822 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 125 [2024-11-18 09:22:29,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:22:29,823 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2024-11-18 09:22:29,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:29,823 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2024-11-18 09:22:29,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-18 09:22:29,824 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:22:29,825 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 6, 6, 6, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:22:29,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 09:22:30,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:22:30,026 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:22:30,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:22:30,026 INFO L85 PathProgramCache]: Analyzing trace with hash 2035647385, now seen corresponding path program 4 times [2024-11-18 09:22:30,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:22:30,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211128724] [2024-11-18 09:22:30,026 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:22:30,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:22:30,089 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:22:30,089 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:22:30,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2178 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 2127 trivial. 0 not checked. [2024-11-18 09:22:30,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:22:30,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211128724] [2024-11-18 09:22:30,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211128724] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:22:30,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241969290] [2024-11-18 09:22:30,314 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:22:30,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:22:30,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:22:30,316 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:22:30,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 09:22:30,495 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:22:30,495 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:22:30,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 09:22:30,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:22:30,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2178 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 2127 trivial. 0 not checked. [2024-11-18 09:22:30,531 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:22:30,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2178 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 2127 trivial. 0 not checked. [2024-11-18 09:22:30,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241969290] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:22:30,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:22:30,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-18 09:22:30,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356579436] [2024-11-18 09:22:30,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:22:30,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 09:22:30,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:22:30,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 09:22:30,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2024-11-18 09:22:30,638 INFO L87 Difference]: Start difference. First operand 131 states and 133 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:30,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:22:30,783 INFO L93 Difference]: Finished difference Result 251 states and 261 transitions. [2024-11-18 09:22:30,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 09:22:30,784 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2024-11-18 09:22:30,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:22:30,785 INFO L225 Difference]: With dead ends: 251 [2024-11-18 09:22:30,786 INFO L226 Difference]: Without dead ends: 235 [2024-11-18 09:22:30,786 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2024-11-18 09:22:30,787 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 198 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:22:30,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 90 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:22:30,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-11-18 09:22:30,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 155. [2024-11-18 09:22:30,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.0194805194805194) internal successors, (157), 154 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:30,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 157 transitions. [2024-11-18 09:22:30,804 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 157 transitions. Word has length 130 [2024-11-18 09:22:30,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:22:30,805 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 157 transitions. [2024-11-18 09:22:30,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:30,805 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 157 transitions. [2024-11-18 09:22:30,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-18 09:22:30,806 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:22:30,807 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 14, 14, 14, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:22:30,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-18 09:22:31,007 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,SelfDestructingSolverStorable10 [2024-11-18 09:22:31,008 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:22:31,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:22:31,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1552001639, now seen corresponding path program 5 times [2024-11-18 09:22:31,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:22:31,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071583051] [2024-11-18 09:22:31,009 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:22:31,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:22:31,333 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-11-18 09:22:31,334 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:22:31,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2414 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 2127 trivial. 0 not checked. [2024-11-18 09:22:31,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:22:31,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071583051] [2024-11-18 09:22:31,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071583051] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:22:31,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977467200] [2024-11-18 09:22:31,805 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:22:31,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:22:31,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:22:31,806 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:22:31,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 09:23:08,712 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-11-18 09:23:08,712 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:23:08,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 09:23:08,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:23:08,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2414 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 2127 trivial. 0 not checked. [2024-11-18 09:23:08,807 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:23:09,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2414 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 2127 trivial. 0 not checked. [2024-11-18 09:23:09,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977467200] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:23:09,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:23:09,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 32 [2024-11-18 09:23:09,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047158834] [2024-11-18 09:23:09,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:23:09,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-18 09:23:09,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:23:09,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-18 09:23:09,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2024-11-18 09:23:09,137 INFO L87 Difference]: Start difference. First operand 155 states and 157 transitions. Second operand has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:09,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:23:09,414 INFO L93 Difference]: Finished difference Result 411 states and 429 transitions. [2024-11-18 09:23:09,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-18 09:23:09,415 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2024-11-18 09:23:09,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:23:09,417 INFO L225 Difference]: With dead ends: 411 [2024-11-18 09:23:09,417 INFO L226 Difference]: Without dead ends: 395 [2024-11-18 09:23:09,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2024-11-18 09:23:09,418 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 442 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:23:09,419 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 184 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:23:09,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2024-11-18 09:23:09,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 203. [2024-11-18 09:23:09,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.0148514851485149) internal successors, (205), 202 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:09,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 205 transitions. [2024-11-18 09:23:09,446 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 205 transitions. Word has length 154 [2024-11-18 09:23:09,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:23:09,447 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 205 transitions. [2024-11-18 09:23:09,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:09,447 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 205 transitions. [2024-11-18 09:23:09,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-18 09:23:09,450 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:23:09,450 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 30, 30, 30, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:23:09,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-18 09:23:09,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:23:09,651 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:23:09,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:23:09,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1890715239, now seen corresponding path program 6 times [2024-11-18 09:23:09,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:23:09,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242279544] [2024-11-18 09:23:09,652 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:23:09,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:23:09,723 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-11-18 09:23:09,723 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:23:10,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3462 backedges. 0 proven. 239 refuted. 0 times theorem prover too weak. 3223 trivial. 0 not checked. [2024-11-18 09:23:10,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:23:10,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242279544] [2024-11-18 09:23:10,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242279544] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:23:10,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241547309] [2024-11-18 09:23:10,058 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:23:10,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:23:10,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:23:10,059 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:23:10,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 09:23:10,553 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-11-18 09:23:10,553 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:23:10,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-18 09:23:10,558 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:23:11,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3462 backedges. 0 proven. 239 refuted. 0 times theorem prover too weak. 3223 trivial. 0 not checked. [2024-11-18 09:23:11,130 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:23:11,343 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-18 09:23:11,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 11 [2024-11-18 09:23:11,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3462 backedges. 27 proven. 212 refuted. 0 times theorem prover too weak. 3223 trivial. 0 not checked. [2024-11-18 09:23:11,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241547309] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:23:11,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:23:11,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 12] total 25 [2024-11-18 09:23:11,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863414957] [2024-11-18 09:23:11,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:23:11,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-18 09:23:11,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:23:11,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-18 09:23:11,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2024-11-18 09:23:11,361 INFO L87 Difference]: Start difference. First operand 203 states and 205 transitions. Second operand has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:11,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:23:11,520 INFO L93 Difference]: Finished difference Result 212 states and 214 transitions. [2024-11-18 09:23:11,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 09:23:11,520 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 202 [2024-11-18 09:23:11,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:23:11,521 INFO L225 Difference]: With dead ends: 212 [2024-11-18 09:23:11,521 INFO L226 Difference]: Without dead ends: 210 [2024-11-18 09:23:11,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2024-11-18 09:23:11,522 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 20 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:23:11,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 155 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:23:11,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-18 09:23:11,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 208. [2024-11-18 09:23:11,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.0144927536231885) internal successors, (210), 207 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:11,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 210 transitions. [2024-11-18 09:23:11,536 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 210 transitions. Word has length 202 [2024-11-18 09:23:11,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:23:11,537 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 210 transitions. [2024-11-18 09:23:11,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:11,537 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 210 transitions. [2024-11-18 09:23:11,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-18 09:23:11,539 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:23:11,539 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 30, 30, 30, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:23:11,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-18 09:23:11,739 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,SelfDestructingSolverStorable12 [2024-11-18 09:23:11,740 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:23:11,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:23:11,740 INFO L85 PathProgramCache]: Analyzing trace with hash -117161368, now seen corresponding path program 7 times [2024-11-18 09:23:11,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:23:11,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991368265] [2024-11-18 09:23:11,740 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:23:11,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:23:11,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:23:14,119 INFO L134 CoverageAnalysis]: Checked inductivity of 3475 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 1359 trivial. 0 not checked. [2024-11-18 09:23:14,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:23:14,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991368265] [2024-11-18 09:23:14,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991368265] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:23:14,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877991375] [2024-11-18 09:23:14,120 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:23:14,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:23:14,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:23:14,121 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:23:14,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 09:23:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:23:14,341 INFO L255 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-18 09:23:14,344 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:23:16,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3475 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 1359 trivial. 0 not checked. [2024-11-18 09:23:16,844 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:23:20,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3475 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 1359 trivial. 0 not checked. [2024-11-18 09:23:20,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877991375] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:23:20,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:23:20,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 143 [2024-11-18 09:23:20,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680268643] [2024-11-18 09:23:20,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:23:20,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 143 states [2024-11-18 09:23:20,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:23:20,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2024-11-18 09:23:20,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9072, Invalid=11234, Unknown=0, NotChecked=0, Total=20306 [2024-11-18 09:23:20,906 INFO L87 Difference]: Start difference. First operand 208 states and 210 transitions. Second operand has 143 states, 143 states have (on average 2.06993006993007) internal successors, (296), 143 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:21,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:23:21,222 INFO L93 Difference]: Finished difference Result 417 states and 468 transitions. [2024-11-18 09:23:21,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-18 09:23:21,222 INFO L78 Accepts]: Start accepts. Automaton has has 143 states, 143 states have (on average 2.06993006993007) internal successors, (296), 143 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2024-11-18 09:23:21,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:23:21,224 INFO L225 Difference]: With dead ends: 417 [2024-11-18 09:23:21,224 INFO L226 Difference]: Without dead ends: 304 [2024-11-18 09:23:21,228 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=9072, Invalid=11234, Unknown=0, NotChecked=0, Total=20306 [2024-11-18 09:23:21,229 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:23:21,229 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 55 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:23:21,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-11-18 09:23:21,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2024-11-18 09:23:21,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 1.00990099009901) internal successors, (306), 303 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:21,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 306 transitions. [2024-11-18 09:23:21,243 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 306 transitions. Word has length 207 [2024-11-18 09:23:21,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:23:21,243 INFO L471 AbstractCegarLoop]: Abstraction has 304 states and 306 transitions. [2024-11-18 09:23:21,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 143 states, 143 states have (on average 2.06993006993007) internal successors, (296), 143 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:21,243 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 306 transitions. [2024-11-18 09:23:21,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-11-18 09:23:21,247 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:23:21,247 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 30, 30, 30, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:23:21,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-18 09:23:21,447 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,SelfDestructingSolverStorable13 [2024-11-18 09:23:21,448 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:23:21,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:23:21,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1754793464, now seen corresponding path program 8 times [2024-11-18 09:23:21,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:23:21,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468549605] [2024-11-18 09:23:21,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:23:21,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:23:21,564 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:23:21,565 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:23:28,065 INFO L134 CoverageAnalysis]: Checked inductivity of 10195 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 1359 trivial. 0 not checked. [2024-11-18 09:23:28,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:23:28,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468549605] [2024-11-18 09:23:28,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468549605] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:23:28,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972631780] [2024-11-18 09:23:28,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:23:28,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:23:28,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:23:28,067 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) [2024-11-18 09:23:28,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 09:23:28,398 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:23:28,399 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:23:28,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-11-18 09:23:28,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:23:32,681 INFO L134 CoverageAnalysis]: Checked inductivity of 10195 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 1359 trivial. 0 not checked. [2024-11-18 09:23:32,681 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:23:42,587 INFO L134 CoverageAnalysis]: Checked inductivity of 10195 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 1359 trivial. 0 not checked. [2024-11-18 09:23:42,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972631780] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:23:42,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:23:42,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 287 [2024-11-18 09:23:42,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074595024] [2024-11-18 09:23:42,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:23:42,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 287 states [2024-11-18 09:23:42,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:23:42,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 287 interpolants. [2024-11-18 09:23:42,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36670, Invalid=45412, Unknown=0, NotChecked=0, Total=82082 [2024-11-18 09:23:42,608 INFO L87 Difference]: Start difference. First operand 304 states and 306 transitions. Second operand has 287 states, 287 states have (on average 2.034843205574913) internal successors, (584), 287 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:43,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:23:43,761 INFO L93 Difference]: Finished difference Result 609 states and 708 transitions. [2024-11-18 09:23:43,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2024-11-18 09:23:43,762 INFO L78 Accepts]: Start accepts. Automaton has has 287 states, 287 states have (on average 2.034843205574913) internal successors, (584), 287 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 303 [2024-11-18 09:23:43,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:23:43,765 INFO L225 Difference]: With dead ends: 609 [2024-11-18 09:23:43,765 INFO L226 Difference]: Without dead ends: 496 [2024-11-18 09:23:43,770 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 701 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35813 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=36670, Invalid=45412, Unknown=0, NotChecked=0, Total=82082 [2024-11-18 09:23:43,771 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 3 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 09:23:43,771 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 107 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 09:23:43,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2024-11-18 09:23:43,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 496. [2024-11-18 09:23:43,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 495 states have (on average 1.006060606060606) internal successors, (498), 495 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:43,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 498 transitions. [2024-11-18 09:23:43,795 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 498 transitions. Word has length 303 [2024-11-18 09:23:43,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:23:43,795 INFO L471 AbstractCegarLoop]: Abstraction has 496 states and 498 transitions. [2024-11-18 09:23:43,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 287 states, 287 states have (on average 2.034843205574913) internal successors, (584), 287 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:43,796 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 498 transitions. [2024-11-18 09:23:43,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2024-11-18 09:23:43,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:23:43,803 INFO L215 NwaCegarLoop]: trace histogram [190, 190, 30, 30, 30, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:23:43,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-18 09:23:44,007 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,SelfDestructingSolverStorable14 [2024-11-18 09:23:44,008 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:23:44,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:23:44,008 INFO L85 PathProgramCache]: Analyzing trace with hash 204794184, now seen corresponding path program 9 times [2024-11-18 09:23:44,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:23:44,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487594164] [2024-11-18 09:23:44,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:23:44,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:23:44,105 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-18 09:23:44,106 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:23:44,437 INFO L134 CoverageAnalysis]: Checked inductivity of 37459 backedges. 0 proven. 332 refuted. 0 times theorem prover too weak. 37127 trivial. 0 not checked. [2024-11-18 09:23:44,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:23:44,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487594164] [2024-11-18 09:23:44,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487594164] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:23:44,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610168093] [2024-11-18 09:23:44,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:23:44,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:23:44,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:23:44,440 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) [2024-11-18 09:23:44,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-18 09:23:44,853 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-18 09:23:44,854 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:23:44,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-18 09:23:44,863 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:23:45,754 INFO L134 CoverageAnalysis]: Checked inductivity of 37459 backedges. 0 proven. 332 refuted. 0 times theorem prover too weak. 37127 trivial. 0 not checked. [2024-11-18 09:23:45,754 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:23:45,953 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-18 09:23:45,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 11 [2024-11-18 09:23:45,968 INFO L134 CoverageAnalysis]: Checked inductivity of 37459 backedges. 26 proven. 306 refuted. 0 times theorem prover too weak. 37127 trivial. 0 not checked. [2024-11-18 09:23:45,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610168093] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:23:45,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:23:45,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 14] total 29 [2024-11-18 09:23:45,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390141743] [2024-11-18 09:23:45,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:23:45,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-18 09:23:45,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:23:45,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-18 09:23:45,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=696, Unknown=0, NotChecked=0, Total=812 [2024-11-18 09:23:45,972 INFO L87 Difference]: Start difference. First operand 496 states and 498 transitions. Second operand has 29 states, 29 states have (on average 3.103448275862069) internal successors, (90), 29 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:46,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:23:46,174 INFO L93 Difference]: Finished difference Result 505 states and 507 transitions. [2024-11-18 09:23:46,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 09:23:46,175 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.103448275862069) internal successors, (90), 29 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 495 [2024-11-18 09:23:46,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:23:46,177 INFO L225 Difference]: With dead ends: 505 [2024-11-18 09:23:46,177 INFO L226 Difference]: Without dead ends: 503 [2024-11-18 09:23:46,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1003 GetRequests, 974 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=794, Unknown=0, NotChecked=0, Total=930 [2024-11-18 09:23:46,179 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 43 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:23:46,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 223 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:23:46,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2024-11-18 09:23:46,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 501. [2024-11-18 09:23:46,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 500 states have (on average 1.006) internal successors, (503), 500 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:46,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 503 transitions. [2024-11-18 09:23:46,205 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 503 transitions. Word has length 495 [2024-11-18 09:23:46,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:23:46,206 INFO L471 AbstractCegarLoop]: Abstraction has 501 states and 503 transitions. [2024-11-18 09:23:46,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.103448275862069) internal successors, (90), 29 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:46,207 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 503 transitions. [2024-11-18 09:23:46,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2024-11-18 09:23:46,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:23:46,210 INFO L215 NwaCegarLoop]: trace histogram [190, 190, 30, 30, 30, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:23:46,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-18 09:23:46,410 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,SelfDestructingSolverStorable15 [2024-11-18 09:23:46,411 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:23:46,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:23:46,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1665480679, now seen corresponding path program 10 times [2024-11-18 09:23:46,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:23:46,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029778415] [2024-11-18 09:23:46,412 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:23:46,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:23:46,640 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:23:46,640 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat