./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-multidimensional/copy-partial-3-u.c --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-multidimensional/copy-partial-3-u.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52a248b2b2cf395cf0c12ea6447af889ed3691d7fa3d2de2504a7728d19c705b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 09:14:38,169 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 09:14:38,268 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 09:14:38,275 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 09:14:38,276 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 09:14:38,311 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 09:14:38,312 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 09:14:38,312 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 09:14:38,313 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 09:14:38,314 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 09:14:38,315 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 09:14:38,315 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 09:14:38,316 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 09:14:38,318 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 09:14:38,318 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 09:14:38,318 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 09:14:38,319 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 09:14:38,319 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 09:14:38,319 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 09:14:38,319 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 09:14:38,320 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 09:14:38,322 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 09:14:38,323 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 09:14:38,323 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 09:14:38,323 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 09:14:38,323 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 09:14:38,324 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 09:14:38,324 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 09:14:38,324 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 09:14:38,325 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 09:14:38,325 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 09:14:38,325 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 09:14:38,325 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:14:38,325 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 09:14:38,326 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 09:14:38,326 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 09:14:38,326 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 09:14:38,327 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 09:14:38,328 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 09:14:38,328 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 09:14:38,328 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 09:14:38,329 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 09:14:38,329 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52a248b2b2cf395cf0c12ea6447af889ed3691d7fa3d2de2504a7728d19c705b [2024-11-18 09:14:38,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 09:14:38,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 09:14:38,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 09:14:38,608 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 09:14:38,609 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 09:14:38,610 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-multidimensional/copy-partial-3-u.c [2024-11-18 09:14:40,117 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 09:14:40,305 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 09:14:40,305 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/copy-partial-3-u.c [2024-11-18 09:14:40,312 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f13d743d/d86cf520d3e341bab42e60fd77f3453b/FLAG445b45b3f [2024-11-18 09:14:40,326 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f13d743d/d86cf520d3e341bab42e60fd77f3453b [2024-11-18 09:14:40,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 09:14:40,329 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 09:14:40,330 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 09:14:40,330 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 09:14:40,335 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 09:14:40,337 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:14:40" (1/1) ... [2024-11-18 09:14:40,338 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@380fb382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:40, skipping insertion in model container [2024-11-18 09:14:40,338 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:14:40" (1/1) ... [2024-11-18 09:14:40,355 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 09:14:40,527 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-multidimensional/copy-partial-3-u.c[414,427] [2024-11-18 09:14:40,559 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:14:40,568 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 09:14:40,580 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-multidimensional/copy-partial-3-u.c[414,427] [2024-11-18 09:14:40,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:14:40,617 INFO L204 MainTranslator]: Completed translation [2024-11-18 09:14:40,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:40 WrapperNode [2024-11-18 09:14:40,617 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 09:14:40,619 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 09:14:40,619 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 09:14:40,619 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 09:14:40,626 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:40" (1/1) ... [2024-11-18 09:14:40,631 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:40" (1/1) ... [2024-11-18 09:14:40,658 INFO L138 Inliner]: procedures = 15, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 132 [2024-11-18 09:14:40,661 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 09:14:40,662 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 09:14:40,662 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 09:14:40,662 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 09:14:40,672 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:40" (1/1) ... [2024-11-18 09:14:40,673 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:40" (1/1) ... [2024-11-18 09:14:40,675 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:40" (1/1) ... [2024-11-18 09:14:40,696 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 3, 4]. 44 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 3 writes are split as follows [0, 2, 1]. [2024-11-18 09:14:40,697 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:40" (1/1) ... [2024-11-18 09:14:40,697 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:40" (1/1) ... [2024-11-18 09:14:40,702 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:40" (1/1) ... [2024-11-18 09:14:40,706 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:40" (1/1) ... [2024-11-18 09:14:40,707 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:40" (1/1) ... [2024-11-18 09:14:40,708 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:40" (1/1) ... [2024-11-18 09:14:40,710 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 09:14:40,711 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 09:14:40,712 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 09:14:40,712 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 09:14:40,713 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:40" (1/1) ... [2024-11-18 09:14:40,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:14:40,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:14:40,751 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 09:14:40,757 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 09:14:40,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 09:14:40,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 09:14:40,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 09:14:40,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 09:14:40,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 09:14:40,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 09:14:40,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 09:14:40,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-18 09:14:40,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 09:14:40,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 09:14:40,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 09:14:40,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 09:14:40,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-18 09:14:40,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 09:14:40,870 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 09:14:40,872 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 09:14:41,077 INFO L? ?]: Removed 31 outVars from TransFormulas that were not future-live. [2024-11-18 09:14:41,077 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 09:14:41,094 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 09:14:41,094 INFO L316 CfgBuilder]: Removed 12 assume(true) statements. [2024-11-18 09:14:41,095 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:14:41 BoogieIcfgContainer [2024-11-18 09:14:41,095 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 09:14:41,098 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 09:14:41,098 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 09:14:41,103 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 09:14:41,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:14:40" (1/3) ... [2024-11-18 09:14:41,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26c31bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:14:41, skipping insertion in model container [2024-11-18 09:14:41,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:14:40" (2/3) ... [2024-11-18 09:14:41,106 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26c31bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:14:41, skipping insertion in model container [2024-11-18 09:14:41,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:14:41" (3/3) ... [2024-11-18 09:14:41,108 INFO L112 eAbstractionObserver]: Analyzing ICFG copy-partial-3-u.c [2024-11-18 09:14:41,124 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 09:14:41,125 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 09:14:41,185 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 09:14:41,192 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;@1f68f408, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 09:14:41,192 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 09:14:41,197 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 34 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:14:41,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-18 09:14:41,205 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:14:41,206 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:14:41,206 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:14:41,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:14:41,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1247519481, now seen corresponding path program 1 times [2024-11-18 09:14:41,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:14:41,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251160680] [2024-11-18 09:14:41,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:14:41,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:14:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:14:41,481 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 09:14:41,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:14:41,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251160680] [2024-11-18 09:14:41,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251160680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:14:41,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:14:41,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:14:41,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82177657] [2024-11-18 09:14:41,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:14:41,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 09:14:41,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:14:41,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 09:14:41,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 09:14:41,521 INFO L87 Difference]: Start difference. First operand has 35 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 34 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 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 09:14:41,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:14:41,541 INFO L93 Difference]: Finished difference Result 67 states and 116 transitions. [2024-11-18 09:14:41,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 09:14:41,544 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 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 09:14:41,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:14:41,550 INFO L225 Difference]: With dead ends: 67 [2024-11-18 09:14:41,551 INFO L226 Difference]: Without dead ends: 31 [2024-11-18 09:14:41,554 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 09:14:41,559 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:14:41,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:14:41,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-18 09:14:41,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-18 09:14:41,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 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 09:14:41,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2024-11-18 09:14:41,597 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 15 [2024-11-18 09:14:41,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:14:41,598 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2024-11-18 09:14:41,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 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 09:14:41,598 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2024-11-18 09:14:41,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-18 09:14:41,600 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:14:41,600 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:14:41,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 09:14:41,601 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:14:41,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:14:41,602 INFO L85 PathProgramCache]: Analyzing trace with hash -5605811, now seen corresponding path program 1 times [2024-11-18 09:14:41,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:14:41,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055150206] [2024-11-18 09:14:41,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:14:41,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:14:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:14:41,784 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 09:14:41,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:14:41,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055150206] [2024-11-18 09:14:41,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055150206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:14:41,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:14:41,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:14:41,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842020393] [2024-11-18 09:14:41,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:14:41,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:14:41,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:14:41,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:14:41,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:14:41,789 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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 09:14:41,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:14:41,900 INFO L93 Difference]: Finished difference Result 72 states and 99 transitions. [2024-11-18 09:14:41,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:14:41,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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 09:14:41,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:14:41,903 INFO L225 Difference]: With dead ends: 72 [2024-11-18 09:14:41,903 INFO L226 Difference]: Without dead ends: 50 [2024-11-18 09:14:41,904 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:14:41,906 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 62 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:14:41,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 33 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:14:41,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-18 09:14:41,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 32. [2024-11-18 09:14:41,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 31 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:14:41,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2024-11-18 09:14:41,921 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 15 [2024-11-18 09:14:41,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:14:41,921 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions. [2024-11-18 09:14:41,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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 09:14:41,922 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2024-11-18 09:14:41,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-18 09:14:41,923 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:14:41,923 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:14:41,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 09:14:41,924 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:14:41,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:14:41,924 INFO L85 PathProgramCache]: Analyzing trace with hash -785961326, now seen corresponding path program 1 times [2024-11-18 09:14:41,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:14:41,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500534929] [2024-11-18 09:14:41,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:14:41,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:14:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:14:42,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:14:42,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:14:42,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500534929] [2024-11-18 09:14:42,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500534929] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:14:42,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:14:42,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:14:42,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835191168] [2024-11-18 09:14:42,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:14:42,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:14:42,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:14:42,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:14:42,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:14:42,084 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 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 09:14:42,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:14:42,183 INFO L93 Difference]: Finished difference Result 72 states and 100 transitions. [2024-11-18 09:14:42,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:14:42,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 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 18 [2024-11-18 09:14:42,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:14:42,186 INFO L225 Difference]: With dead ends: 72 [2024-11-18 09:14:42,186 INFO L226 Difference]: Without dead ends: 45 [2024-11-18 09:14:42,186 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:14:42,187 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 67 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:14:42,188 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 35 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:14:42,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-18 09:14:42,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 34. [2024-11-18 09:14:42,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 33 states have internal predecessors, (45), 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 09:14:42,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2024-11-18 09:14:42,201 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 18 [2024-11-18 09:14:42,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:14:42,201 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2024-11-18 09:14:42,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 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 09:14:42,201 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2024-11-18 09:14:42,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-18 09:14:42,203 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:14:42,203 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:14:42,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 09:14:42,203 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:14:42,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:14:42,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1148207861, now seen corresponding path program 1 times [2024-11-18 09:14:42,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:14:42,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979941744] [2024-11-18 09:14:42,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:14:42,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:14:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:14:42,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:14:42,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:14:42,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979941744] [2024-11-18 09:14:42,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979941744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:14:42,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:14:42,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:14:42,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624715276] [2024-11-18 09:14:42,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:14:42,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:14:42,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:14:42,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:14:42,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:14:42,306 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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 09:14:42,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:14:42,371 INFO L93 Difference]: Finished difference Result 70 states and 95 transitions. [2024-11-18 09:14:42,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:14:42,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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) Word has length 21 [2024-11-18 09:14:42,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:14:42,373 INFO L225 Difference]: With dead ends: 70 [2024-11-18 09:14:42,373 INFO L226 Difference]: Without dead ends: 41 [2024-11-18 09:14:42,374 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:14:42,375 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 42 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:14:42,375 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 43 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:14:42,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-18 09:14:42,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2024-11-18 09:14:42,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 35 states have internal predecessors, (47), 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 09:14:42,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2024-11-18 09:14:42,391 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 21 [2024-11-18 09:14:42,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:14:42,391 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2024-11-18 09:14:42,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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 09:14:42,392 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2024-11-18 09:14:42,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-18 09:14:42,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:14:42,392 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:14:42,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 09:14:42,393 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:14:42,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:14:42,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1730545667, now seen corresponding path program 1 times [2024-11-18 09:14:42,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:14:42,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259380993] [2024-11-18 09:14:42,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:14:42,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:14:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:14:42,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 09:14:42,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:14:42,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259380993] [2024-11-18 09:14:42,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259380993] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:14:42,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:14:42,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:14:42,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045203116] [2024-11-18 09:14:42,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:14:42,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:14:42,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:14:42,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:14:42,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:14:42,510 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 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 09:14:42,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:14:42,576 INFO L93 Difference]: Finished difference Result 76 states and 99 transitions. [2024-11-18 09:14:42,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:14:42,577 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 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) Word has length 22 [2024-11-18 09:14:42,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:14:42,578 INFO L225 Difference]: With dead ends: 76 [2024-11-18 09:14:42,578 INFO L226 Difference]: Without dead ends: 58 [2024-11-18 09:14:42,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:14:42,579 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 52 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:14:42,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 45 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:14:42,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-18 09:14:42,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 37. [2024-11-18 09:14:42,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 36 states have internal predecessors, (48), 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 09:14:42,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2024-11-18 09:14:42,592 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 22 [2024-11-18 09:14:42,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:14:42,593 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2024-11-18 09:14:42,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 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 09:14:42,594 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2024-11-18 09:14:42,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-18 09:14:42,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:14:42,595 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:14:42,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 09:14:42,595 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:14:42,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:14:42,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1794892619, now seen corresponding path program 1 times [2024-11-18 09:14:42,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:14:42,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114346473] [2024-11-18 09:14:42,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:14:42,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:14:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:14:42,676 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 09:14:42,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:14:42,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114346473] [2024-11-18 09:14:42,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114346473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:14:42,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:14:42,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:14:42,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151286612] [2024-11-18 09:14:42,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:14:42,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:14:42,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:14:42,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:14:42,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:14:42,681 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 09:14:42,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:14:42,740 INFO L93 Difference]: Finished difference Result 73 states and 96 transitions. [2024-11-18 09:14:42,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:14:42,741 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 25 [2024-11-18 09:14:42,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:14:42,742 INFO L225 Difference]: With dead ends: 73 [2024-11-18 09:14:42,742 INFO L226 Difference]: Without dead ends: 50 [2024-11-18 09:14:42,742 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:14:42,743 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 42 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:14:42,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 45 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:14:42,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-18 09:14:42,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2024-11-18 09:14:42,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 37 states have internal predecessors, (49), 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 09:14:42,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2024-11-18 09:14:42,751 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 49 transitions. Word has length 25 [2024-11-18 09:14:42,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:14:42,752 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 49 transitions. [2024-11-18 09:14:42,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 09:14:42,752 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 49 transitions. [2024-11-18 09:14:42,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-18 09:14:42,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:14:42,753 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:14:42,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 09:14:42,754 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:14:42,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:14:42,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1471150881, now seen corresponding path program 1 times [2024-11-18 09:14:42,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:14:42,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134560948] [2024-11-18 09:14:42,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:14:42,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:14:42,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:14:42,828 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 09:14:42,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:14:42,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134560948] [2024-11-18 09:14:42,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134560948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:14:42,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:14:42,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:14:42,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171637501] [2024-11-18 09:14:42,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:14:42,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:14:42,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:14:42,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:14:42,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:14:42,830 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 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 09:14:42,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:14:42,871 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2024-11-18 09:14:42,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:14:42,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 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 28 [2024-11-18 09:14:42,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:14:42,873 INFO L225 Difference]: With dead ends: 67 [2024-11-18 09:14:42,873 INFO L226 Difference]: Without dead ends: 43 [2024-11-18 09:14:42,873 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:14:42,874 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 32 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:14:42,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 54 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:14:42,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-18 09:14:42,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2024-11-18 09:14:42,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 38 states have internal predecessors, (50), 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 09:14:42,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2024-11-18 09:14:42,884 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 28 [2024-11-18 09:14:42,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:14:42,884 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2024-11-18 09:14:42,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 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 09:14:42,885 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2024-11-18 09:14:42,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-18 09:14:42,885 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:14:42,886 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:14:42,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 09:14:42,886 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:14:42,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:14:42,886 INFO L85 PathProgramCache]: Analyzing trace with hash -585856218, now seen corresponding path program 1 times [2024-11-18 09:14:42,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:14:42,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777214990] [2024-11-18 09:14:42,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:14:42,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:14:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:14:42,963 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:14:42,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:14:42,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777214990] [2024-11-18 09:14:42,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777214990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:14:42,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:14:42,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:14:42,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146878604] [2024-11-18 09:14:42,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:14:42,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:14:42,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:14:42,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:14:42,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:14:42,966 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 09:14:43,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:14:43,120 INFO L93 Difference]: Finished difference Result 56 states and 72 transitions. [2024-11-18 09:14:43,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:14:43,123 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 29 [2024-11-18 09:14:43,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:14:43,124 INFO L225 Difference]: With dead ends: 56 [2024-11-18 09:14:43,124 INFO L226 Difference]: Without dead ends: 44 [2024-11-18 09:14:43,124 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:14:43,125 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 39 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:14:43,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 26 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:14:43,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-18 09:14:43,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2024-11-18 09:14:43,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 39 states have internal predecessors, (51), 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 09:14:43,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2024-11-18 09:14:43,136 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 29 [2024-11-18 09:14:43,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:14:43,136 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2024-11-18 09:14:43,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 09:14:43,137 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2024-11-18 09:14:43,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-18 09:14:43,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:14:43,139 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:14:43,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 09:14:43,139 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:14:43,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:14:43,140 INFO L85 PathProgramCache]: Analyzing trace with hash 628365451, now seen corresponding path program 1 times [2024-11-18 09:14:43,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:14:43,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036398573] [2024-11-18 09:14:43,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:14:43,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:14:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:14:43,213 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:14:43,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:14:43,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036398573] [2024-11-18 09:14:43,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036398573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:14:43,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:14:43,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:14:43,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836199043] [2024-11-18 09:14:43,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:14:43,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:14:43,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:14:43,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:14:43,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:14:43,219 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 09:14:43,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:14:43,297 INFO L93 Difference]: Finished difference Result 60 states and 78 transitions. [2024-11-18 09:14:43,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:14:43,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 32 [2024-11-18 09:14:43,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:14:43,299 INFO L225 Difference]: With dead ends: 60 [2024-11-18 09:14:43,299 INFO L226 Difference]: Without dead ends: 43 [2024-11-18 09:14:43,299 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:14:43,300 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 29 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:14:43,301 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 30 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:14:43,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-18 09:14:43,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2024-11-18 09:14:43,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.3) internal successors, (52), 40 states have internal predecessors, (52), 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 09:14:43,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2024-11-18 09:14:43,315 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 32 [2024-11-18 09:14:43,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:14:43,316 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2024-11-18 09:14:43,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 09:14:43,316 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2024-11-18 09:14:43,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-18 09:14:43,316 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:14:43,317 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:14:43,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 09:14:43,317 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:14:43,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:14:43,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1983947548, now seen corresponding path program 1 times [2024-11-18 09:14:43,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:14:43,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662361948] [2024-11-18 09:14:43,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:14:43,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:14:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:14:43,409 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:14:43,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:14:43,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662361948] [2024-11-18 09:14:43,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662361948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:14:43,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:14:43,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:14:43,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014285918] [2024-11-18 09:14:43,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:14:43,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:14:43,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:14:43,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:14:43,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:14:43,412 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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 09:14:43,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:14:43,480 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2024-11-18 09:14:43,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:14:43,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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 35 [2024-11-18 09:14:43,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:14:43,481 INFO L225 Difference]: With dead ends: 60 [2024-11-18 09:14:43,481 INFO L226 Difference]: Without dead ends: 42 [2024-11-18 09:14:43,482 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:14:43,483 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 20 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:14:43,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 35 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:14:43,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-18 09:14:43,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-18 09:14:43,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 41 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 09:14:43,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2024-11-18 09:14:43,496 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 35 [2024-11-18 09:14:43,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:14:43,498 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2024-11-18 09:14:43,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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 09:14:43,498 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2024-11-18 09:14:43,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-18 09:14:43,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:14:43,500 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:14:43,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 09:14:43,501 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:14:43,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:14:43,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1063758460, now seen corresponding path program 1 times [2024-11-18 09:14:43,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:14:43,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505463239] [2024-11-18 09:14:43,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:14:43,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:14:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:14:43,590 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:14:43,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:14:43,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505463239] [2024-11-18 09:14:43,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505463239] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:14:43,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893110652] [2024-11-18 09:14:43,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:14:43,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:14:43,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:14:43,595 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 09:14:43,596 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 09:14:43,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:14:43,694 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 09:14:43,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:14:43,781 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:14:43,784 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:14:43,825 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:14:43,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893110652] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:14:43,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:14:43,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-18 09:14:43,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227144033] [2024-11-18 09:14:43,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:14:43,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 09:14:43,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:14:43,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 09:14:43,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-18 09:14:43,831 INFO L87 Difference]: Start difference. First operand 42 states and 53 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:14:43,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:14:43,959 INFO L93 Difference]: Finished difference Result 100 states and 131 transitions. [2024-11-18 09:14:43,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 09:14:43,960 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-18 09:14:43,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:14:43,965 INFO L225 Difference]: With dead ends: 100 [2024-11-18 09:14:43,965 INFO L226 Difference]: Without dead ends: 63 [2024-11-18 09:14:43,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-18 09:14:43,966 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 86 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:14:43,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 73 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:14:43,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-18 09:14:43,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 54. [2024-11-18 09:14:43,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.2830188679245282) internal successors, (68), 53 states have internal predecessors, (68), 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 09:14:43,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2024-11-18 09:14:43,986 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 36 [2024-11-18 09:14:43,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:14:43,986 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2024-11-18 09:14:43,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:14:43,986 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2024-11-18 09:14:43,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-18 09:14:43,987 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:14:43,987 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:14:44,006 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 09:14:44,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-18 09:14:44,188 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:14:44,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:14:44,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1364299900, now seen corresponding path program 2 times [2024-11-18 09:14:44,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:14:44,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860340819] [2024-11-18 09:14:44,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:14:44,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:14:44,218 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:14:44,219 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:14:44,281 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 09:14:44,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:14:44,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860340819] [2024-11-18 09:14:44,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860340819] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:14:44,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878392244] [2024-11-18 09:14:44,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:14:44,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:14:44,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:14:44,284 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 09:14:44,285 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 09:14:44,386 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:14:44,386 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:14:44,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 09:14:44,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:14:44,475 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:14:44,475 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:14:44,559 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:14:44,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878392244] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:14:44,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:14:44,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 16 [2024-11-18 09:14:44,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756705125] [2024-11-18 09:14:44,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:14:44,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 09:14:44,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:14:44,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 09:14:44,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2024-11-18 09:14:44,562 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 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 09:14:45,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:14:45,331 INFO L93 Difference]: Finished difference Result 328 states and 430 transitions. [2024-11-18 09:14:45,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-18 09:14:45,332 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 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) Word has length 39 [2024-11-18 09:14:45,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:14:45,333 INFO L225 Difference]: With dead ends: 328 [2024-11-18 09:14:45,333 INFO L226 Difference]: Without dead ends: 279 [2024-11-18 09:14:45,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=629, Invalid=1093, Unknown=0, NotChecked=0, Total=1722 [2024-11-18 09:14:45,335 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 957 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 09:14:45,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 111 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 09:14:45,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-18 09:14:45,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 94. [2024-11-18 09:14:45,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.2473118279569892) internal successors, (116), 93 states have internal predecessors, (116), 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 09:14:45,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 116 transitions. [2024-11-18 09:14:45,361 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 116 transitions. Word has length 39 [2024-11-18 09:14:45,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:14:45,361 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 116 transitions. [2024-11-18 09:14:45,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 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 09:14:45,361 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 116 transitions. [2024-11-18 09:14:45,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-18 09:14:45,362 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:14:45,362 INFO L215 NwaCegarLoop]: trace histogram [20, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:14:45,379 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 09:14:45,566 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,SelfDestructingSolverStorable11 [2024-11-18 09:14:45,567 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:14:45,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:14:45,568 INFO L85 PathProgramCache]: Analyzing trace with hash -543322686, now seen corresponding path program 3 times [2024-11-18 09:14:45,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:14:45,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209810207] [2024-11-18 09:14:45,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:14:45,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:14:45,602 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-18 09:14:45,602 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:14:45,672 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2024-11-18 09:14:45,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:14:45,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209810207] [2024-11-18 09:14:45,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209810207] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:14:45,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369042754] [2024-11-18 09:14:45,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:14:45,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:14:45,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:14:45,675 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 09:14:45,676 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 09:14:45,782 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-18 09:14:45,782 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:14:45,783 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 09:14:45,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:14:46,002 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2024-11-18 09:14:46,003 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:14:46,109 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2024-11-18 09:14:46,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369042754] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:14:46,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:14:46,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-18 09:14:46,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602097328] [2024-11-18 09:14:46,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:14:46,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 09:14:46,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:14:46,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 09:14:46,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-18 09:14:46,112 INFO L87 Difference]: Start difference. First operand 94 states and 116 transitions. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 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 09:14:46,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:14:46,329 INFO L93 Difference]: Finished difference Result 319 states and 406 transitions. [2024-11-18 09:14:46,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 09:14:46,329 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 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 61 [2024-11-18 09:14:46,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:14:46,331 INFO L225 Difference]: With dead ends: 319 [2024-11-18 09:14:46,331 INFO L226 Difference]: Without dead ends: 262 [2024-11-18 09:14:46,332 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2024-11-18 09:14:46,332 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 413 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:14:46,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 45 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:14:46,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-11-18 09:14:46,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 147. [2024-11-18 09:14:46,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.226027397260274) internal successors, (179), 146 states have internal predecessors, (179), 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 09:14:46,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 179 transitions. [2024-11-18 09:14:46,368 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 179 transitions. Word has length 61 [2024-11-18 09:14:46,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:14:46,369 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 179 transitions. [2024-11-18 09:14:46,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 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 09:14:46,369 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 179 transitions. [2024-11-18 09:14:46,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-18 09:14:46,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:14:46,373 INFO L215 NwaCegarLoop]: trace histogram [40, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:14:46,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 09:14:46,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:14:46,574 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:14:46,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:14:46,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1527243484, now seen corresponding path program 4 times [2024-11-18 09:14:46,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:14:46,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915212325] [2024-11-18 09:14:46,575 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:14:46,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:14:46,629 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:14:46,629 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:14:46,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1077 backedges. 8 proven. 380 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2024-11-18 09:14:46,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:14:46,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915212325] [2024-11-18 09:14:46,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915212325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:14:46,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548064652] [2024-11-18 09:14:46,764 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:14:46,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:14:46,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:14:46,766 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 09:14:46,767 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 09:14:46,903 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:14:46,904 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:14:46,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 09:14:46,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:14:47,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1077 backedges. 388 proven. 1 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2024-11-18 09:14:47,019 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:14:47,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1077 backedges. 387 proven. 2 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2024-11-18 09:14:47,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548064652] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:14:47,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:14:47,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2024-11-18 09:14:47,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600516454] [2024-11-18 09:14:47,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:14:47,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 09:14:47,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:14:47,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 09:14:47,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-18 09:14:47,092 INFO L87 Difference]: Start difference. First operand 147 states and 179 transitions. Second operand has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 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 09:14:47,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:14:47,475 INFO L93 Difference]: Finished difference Result 494 states and 606 transitions. [2024-11-18 09:14:47,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 09:14:47,475 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2024-11-18 09:14:47,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:14:47,477 INFO L225 Difference]: With dead ends: 494 [2024-11-18 09:14:47,477 INFO L226 Difference]: Without dead ends: 323 [2024-11-18 09:14:47,479 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 219 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2024-11-18 09:14:47,479 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 248 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:14:47,480 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 100 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:14:47,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-11-18 09:14:47,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 232. [2024-11-18 09:14:47,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.2077922077922079) internal successors, (279), 231 states have internal predecessors, (279), 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 09:14:47,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 279 transitions. [2024-11-18 09:14:47,566 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 279 transitions. Word has length 114 [2024-11-18 09:14:47,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:14:47,566 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 279 transitions. [2024-11-18 09:14:47,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 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 09:14:47,567 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 279 transitions. [2024-11-18 09:14:47,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-18 09:14:47,571 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:14:47,571 INFO L215 NwaCegarLoop]: trace histogram [80, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:14:47,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 09:14:47,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:14:47,773 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:14:47,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:14:47,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1675809500, now seen corresponding path program 5 times [2024-11-18 09:14:47,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:14:47,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230425272] [2024-11-18 09:14:47,774 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:14:47,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:14:47,958 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-18 09:14:47,958 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:14:48,252 INFO L134 CoverageAnalysis]: Checked inductivity of 4019 backedges. 2539 proven. 135 refuted. 0 times theorem prover too weak. 1345 trivial. 0 not checked. [2024-11-18 09:14:48,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:14:48,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230425272] [2024-11-18 09:14:48,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230425272] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:14:48,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840019887] [2024-11-18 09:14:48,253 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:14:48,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:14:48,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:14:48,255 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 09:14:48,257 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 09:14:50,200 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-18 09:14:50,200 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:14:50,207 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-18 09:14:50,211 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:14:50,550 INFO L134 CoverageAnalysis]: Checked inductivity of 4019 backedges. 2539 proven. 135 refuted. 0 times theorem prover too weak. 1345 trivial. 0 not checked. [2024-11-18 09:14:50,551 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:14:50,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4019 backedges. 2539 proven. 135 refuted. 0 times theorem prover too weak. 1345 trivial. 0 not checked. [2024-11-18 09:14:50,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840019887] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:14:50,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:14:50,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 41 [2024-11-18 09:14:50,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011142135] [2024-11-18 09:14:50,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:14:50,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-18 09:14:50,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:14:50,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-18 09:14:50,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1179, Unknown=0, NotChecked=0, Total=1640 [2024-11-18 09:14:50,774 INFO L87 Difference]: Start difference. First operand 232 states and 279 transitions. Second operand has 41 states, 41 states have (on average 2.3902439024390243) internal successors, (98), 41 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:14:56,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:14:56,563 INFO L93 Difference]: Finished difference Result 2174 states and 2652 transitions. [2024-11-18 09:14:56,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2024-11-18 09:14:56,563 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.3902439024390243) internal successors, (98), 41 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2024-11-18 09:14:56,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:14:56,571 INFO L225 Difference]: With dead ends: 2174 [2024-11-18 09:14:56,571 INFO L226 Difference]: Without dead ends: 1974 [2024-11-18 09:14:56,590 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 737 GetRequests, 476 SyntacticMatches, 2 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32902 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=16608, Invalid=51252, Unknown=0, NotChecked=0, Total=67860 [2024-11-18 09:14:56,591 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 672 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 1300 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 1300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:14:56,591 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [672 Valid, 790 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 1300 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 09:14:56,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2024-11-18 09:14:56,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1313. [2024-11-18 09:14:56,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1313 states, 1312 states have (on average 1.3018292682926829) internal successors, (1708), 1312 states have internal predecessors, (1708), 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 09:14:56,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 1708 transitions. [2024-11-18 09:14:56,829 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 1708 transitions. Word has length 166 [2024-11-18 09:14:56,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:14:56,829 INFO L471 AbstractCegarLoop]: Abstraction has 1313 states and 1708 transitions. [2024-11-18 09:14:56,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.3902439024390243) internal successors, (98), 41 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:14:56,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 1708 transitions. [2024-11-18 09:14:56,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2024-11-18 09:14:56,834 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:14:56,835 INFO L215 NwaCegarLoop]: trace histogram [240, 24, 24, 24, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:14:56,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 09:14:57,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-18 09:14:57,036 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:14:57,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:14:57,036 INFO L85 PathProgramCache]: Analyzing trace with hash 309514716, now seen corresponding path program 6 times [2024-11-18 09:14:57,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:14:57,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279110751] [2024-11-18 09:14:57,037 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:14:57,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:14:57,187 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-18 09:14:57,188 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:14:57,252 INFO L134 CoverageAnalysis]: Checked inductivity of 35467 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 35466 trivial. 0 not checked. [2024-11-18 09:14:57,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:14:57,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279110751] [2024-11-18 09:14:57,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279110751] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:14:57,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577423339] [2024-11-18 09:14:57,253 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:14:57,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:14:57,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:14:57,255 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 09:14:57,257 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 09:14:57,581 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-18 09:14:57,581 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:14:57,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 09:14:57,590 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:14:57,939 INFO L134 CoverageAnalysis]: Checked inductivity of 35467 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 35466 trivial. 0 not checked. [2024-11-18 09:14:57,939 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:14:58,266 INFO L134 CoverageAnalysis]: Checked inductivity of 35467 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 35466 trivial. 0 not checked. [2024-11-18 09:14:58,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577423339] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:14:58,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:14:58,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-18 09:14:58,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306533832] [2024-11-18 09:14:58,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:14:58,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 09:14:58,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:14:58,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 09:14:58,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-18 09:14:58,268 INFO L87 Difference]: Start difference. First operand 1313 states and 1708 transitions. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 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 09:14:59,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:14:59,045 INFO L93 Difference]: Finished difference Result 4056 states and 5505 transitions. [2024-11-18 09:14:59,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 09:14:59,046 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 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 374 [2024-11-18 09:14:59,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:14:59,059 INFO L225 Difference]: With dead ends: 4056 [2024-11-18 09:14:59,059 INFO L226 Difference]: Without dead ends: 3525 [2024-11-18 09:14:59,061 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 743 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-18 09:14:59,062 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 158 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:14:59,062 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 112 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:14:59,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3525 states. [2024-11-18 09:14:59,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3525 to 1334. [2024-11-18 09:14:59,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1334 states, 1333 states have (on average 1.3015753938484622) internal successors, (1735), 1333 states have internal predecessors, (1735), 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 09:14:59,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 1735 transitions. [2024-11-18 09:14:59,369 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 1735 transitions. Word has length 374 [2024-11-18 09:14:59,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:14:59,370 INFO L471 AbstractCegarLoop]: Abstraction has 1334 states and 1735 transitions. [2024-11-18 09:14:59,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 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 09:14:59,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 1735 transitions. [2024-11-18 09:14:59,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2024-11-18 09:14:59,376 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:14:59,376 INFO L215 NwaCegarLoop]: trace histogram [240, 24, 24, 24, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:14:59,393 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 09:14:59,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-18 09:14:59,578 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:14:59,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:14:59,578 INFO L85 PathProgramCache]: Analyzing trace with hash 2107825101, now seen corresponding path program 7 times [2024-11-18 09:14:59,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:14:59,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739349423] [2024-11-18 09:14:59,579 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:14:59,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:14:59,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:15:01,455 INFO L134 CoverageAnalysis]: Checked inductivity of 35542 backedges. 2814 proven. 55 refuted. 0 times theorem prover too weak. 32673 trivial. 0 not checked. [2024-11-18 09:15:01,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:15:01,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739349423] [2024-11-18 09:15:01,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739349423] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:15:01,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430944572] [2024-11-18 09:15:01,456 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:15:01,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:15:01,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:15:01,458 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 09:15:01,459 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 09:15:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:15:02,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 2591 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-18 09:15:02,180 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:15:02,342 INFO L134 CoverageAnalysis]: Checked inductivity of 35542 backedges. 2814 proven. 55 refuted. 0 times theorem prover too weak. 32673 trivial. 0 not checked. [2024-11-18 09:15:02,342 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:15:02,580 INFO L134 CoverageAnalysis]: Checked inductivity of 35542 backedges. 2814 proven. 55 refuted. 0 times theorem prover too weak. 32673 trivial. 0 not checked. [2024-11-18 09:15:02,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430944572] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:15:02,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:15:02,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 37 [2024-11-18 09:15:02,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499378255] [2024-11-18 09:15:02,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:15:02,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-18 09:15:02,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:15:02,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-18 09:15:02,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=753, Unknown=0, NotChecked=0, Total=1332 [2024-11-18 09:15:02,584 INFO L87 Difference]: Start difference. First operand 1334 states and 1735 transitions. Second operand has 37 states, 37 states have (on average 2.081081081081081) internal successors, (77), 37 states have internal predecessors, (77), 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 09:15:03,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:15:03,460 INFO L93 Difference]: Finished difference Result 3047 states and 4316 transitions. [2024-11-18 09:15:03,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-18 09:15:03,461 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.081081081081081) internal successors, (77), 37 states have internal predecessors, (77), 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 395 [2024-11-18 09:15:03,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:15:03,468 INFO L225 Difference]: With dead ends: 3047 [2024-11-18 09:15:03,469 INFO L226 Difference]: Without dead ends: 1730 [2024-11-18 09:15:03,471 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 813 GetRequests, 767 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=876, Invalid=1380, Unknown=0, NotChecked=0, Total=2256 [2024-11-18 09:15:03,471 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 477 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:15:03,472 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 156 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:15:03,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2024-11-18 09:15:03,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1604. [2024-11-18 09:15:03,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1604 states, 1603 states have (on average 1.1665626949469745) internal successors, (1870), 1603 states have internal predecessors, (1870), 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 09:15:03,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 1870 transitions. [2024-11-18 09:15:03,780 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 1870 transitions. Word has length 395 [2024-11-18 09:15:03,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:15:03,781 INFO L471 AbstractCegarLoop]: Abstraction has 1604 states and 1870 transitions. [2024-11-18 09:15:03,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.081081081081081) internal successors, (77), 37 states have internal predecessors, (77), 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 09:15:03,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 1870 transitions. [2024-11-18 09:15:03,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 984 [2024-11-18 09:15:03,799 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:15:03,800 INFO L215 NwaCegarLoop]: trace histogram [792, 36, 36, 36, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:15:03,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-18 09:15:04,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:15:04,000 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:15:04,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:15:04,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1104539259, now seen corresponding path program 8 times [2024-11-18 09:15:04,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:15:04,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278799762] [2024-11-18 09:15:04,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:15:04,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:15:04,896 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:15:04,896 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:15:10,618 INFO L134 CoverageAnalysis]: Checked inductivity of 343960 backedges. 18558 proven. 253 refuted. 0 times theorem prover too weak. 325149 trivial. 0 not checked. [2024-11-18 09:15:10,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:15:10,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278799762] [2024-11-18 09:15:10,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278799762] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:15:10,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200392824] [2024-11-18 09:15:10,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:15:10,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:15:10,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:15:10,622 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 09:15:10,623 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 09:15:12,308 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:15:12,308 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:15:12,342 INFO L255 TraceCheckSpWp]: Trace formula consists of 7631 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-18 09:15:12,360 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:15:12,843 INFO L134 CoverageAnalysis]: Checked inductivity of 343960 backedges. 18558 proven. 253 refuted. 0 times theorem prover too weak. 325149 trivial. 0 not checked. [2024-11-18 09:15:12,843 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:15:13,676 INFO L134 CoverageAnalysis]: Checked inductivity of 343960 backedges. 18558 proven. 253 refuted. 0 times theorem prover too weak. 325149 trivial. 0 not checked. [2024-11-18 09:15:13,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200392824] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:15:13,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:15:13,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 73 [2024-11-18 09:15:13,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467851128] [2024-11-18 09:15:13,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:15:13,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-18 09:15:13,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:15:13,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-18 09:15:13,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2307, Invalid=2949, Unknown=0, NotChecked=0, Total=5256 [2024-11-18 09:15:13,682 INFO L87 Difference]: Start difference. First operand 1604 states and 1870 transitions. Second operand has 73 states, 73 states have (on average 1.547945205479452) internal successors, (113), 73 states have internal predecessors, (113), 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 09:15:15,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:15:15,574 INFO L93 Difference]: Finished difference Result 4961 states and 6923 transitions. [2024-11-18 09:15:15,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-18 09:15:15,575 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.547945205479452) internal successors, (113), 73 states have internal predecessors, (113), 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 983 [2024-11-18 09:15:15,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:15:15,590 INFO L225 Difference]: With dead ends: 4961 [2024-11-18 09:15:15,591 INFO L226 Difference]: Without dead ends: 3386 [2024-11-18 09:15:15,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2013 GetRequests, 1919 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3217 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3480, Invalid=5640, Unknown=0, NotChecked=0, Total=9120 [2024-11-18 09:15:15,596 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 1049 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1049 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 09:15:15,596 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1049 Valid, 275 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 09:15:15,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2024-11-18 09:15:16,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 3116. [2024-11-18 09:15:16,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3116 states, 3115 states have (on average 1.155056179775281) internal successors, (3598), 3115 states have internal predecessors, (3598), 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 09:15:16,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3116 states to 3116 states and 3598 transitions. [2024-11-18 09:15:16,218 INFO L78 Accepts]: Start accepts. Automaton has 3116 states and 3598 transitions. Word has length 983 [2024-11-18 09:15:16,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:15:16,218 INFO L471 AbstractCegarLoop]: Abstraction has 3116 states and 3598 transitions. [2024-11-18 09:15:16,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.547945205479452) internal successors, (113), 73 states have internal predecessors, (113), 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 09:15:16,219 INFO L276 IsEmpty]: Start isEmpty. Operand 3116 states and 3598 transitions. [2024-11-18 09:15:16,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1848 [2024-11-18 09:15:16,239 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:15:16,240 INFO L215 NwaCegarLoop]: trace histogram [1656, 36, 36, 36, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:15:16,274 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 09:15:16,440 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,SelfDestructingSolverStorable17 [2024-11-18 09:15:16,441 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:15:16,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:15:16,441 INFO L85 PathProgramCache]: Analyzing trace with hash -256297595, now seen corresponding path program 9 times [2024-11-18 09:15:16,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:15:16,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000245695] [2024-11-18 09:15:16,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:15:16,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:15:17,042 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-18 09:15:17,043 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:15:17,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1432168 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 1432144 trivial. 0 not checked. [2024-11-18 09:15:17,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:15:17,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000245695] [2024-11-18 09:15:17,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000245695] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:15:17,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004803958] [2024-11-18 09:15:17,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:15:17,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:15:17,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:15:17,136 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 09:15:17,137 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 09:15:19,159 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-18 09:15:19,160 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:15:19,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 09:15:19,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:15:21,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1432168 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 1432138 trivial. 0 not checked. [2024-11-18 09:15:21,116 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:15:22,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1432168 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 1432138 trivial. 0 not checked. [2024-11-18 09:15:22,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004803958] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:15:22,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:15:22,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-18 09:15:22,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704771182] [2024-11-18 09:15:22,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:15:22,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 09:15:22,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:15:22,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 09:15:22,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-18 09:15:22,878 INFO L87 Difference]: Start difference. First operand 3116 states and 3598 transitions. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 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 09:15:23,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:15:23,635 INFO L93 Difference]: Finished difference Result 4476 states and 5409 transitions. [2024-11-18 09:15:23,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 09:15:23,635 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 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 1847 [2024-11-18 09:15:23,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:15:23,650 INFO L225 Difference]: With dead ends: 4476 [2024-11-18 09:15:23,651 INFO L226 Difference]: Without dead ends: 3144 [2024-11-18 09:15:23,653 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3704 GetRequests, 3688 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=198, Unknown=0, NotChecked=0, Total=306 [2024-11-18 09:15:23,653 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 173 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:15:23,654 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 76 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:15:23,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3144 states. [2024-11-18 09:15:24,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3144 to 3132. [2024-11-18 09:15:24,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3132 states, 3131 states have (on average 1.154263813478122) internal successors, (3614), 3131 states have internal predecessors, (3614), 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 09:15:24,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 3614 transitions. [2024-11-18 09:15:24,169 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 3614 transitions. Word has length 1847 [2024-11-18 09:15:24,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:15:24,172 INFO L471 AbstractCegarLoop]: Abstraction has 3132 states and 3614 transitions. [2024-11-18 09:15:24,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 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 09:15:24,172 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 3614 transitions. [2024-11-18 09:15:24,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1864 [2024-11-18 09:15:24,192 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:15:24,193 INFO L215 NwaCegarLoop]: trace histogram [1656, 36, 36, 36, 16, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:15:24,213 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 09:15:24,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:15:24,394 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:15:24,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:15:24,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1170557259, now seen corresponding path program 10 times [2024-11-18 09:15:24,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:15:24,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359307206] [2024-11-18 09:15:24,395 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:15:24,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:15:24,937 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:15:24,937 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:15:25,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1432368 backedges. 47 proven. 3 refuted. 0 times theorem prover too weak. 1432318 trivial. 0 not checked. [2024-11-18 09:15:25,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:15:25,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359307206] [2024-11-18 09:15:25,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359307206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:15:25,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216945839] [2024-11-18 09:15:25,077 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:15:25,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:15:25,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:15:25,079 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 09:15:25,081 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 09:15:27,276 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:15:27,276 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:15:27,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 09:15:27,306 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:15:27,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1432368 backedges. 100 proven. 5 refuted. 0 times theorem prover too weak. 1432263 trivial. 0 not checked. [2024-11-18 09:15:27,458 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:15:27,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1432368 backedges. 100 proven. 5 refuted. 0 times theorem prover too weak. 1432263 trivial. 0 not checked. [2024-11-18 09:15:27,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216945839] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:15:27,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:15:27,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 19 [2024-11-18 09:15:27,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802499301] [2024-11-18 09:15:27,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:15:27,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-18 09:15:27,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:15:27,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-18 09:15:27,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2024-11-18 09:15:27,577 INFO L87 Difference]: Start difference. First operand 3132 states and 3614 transitions. Second operand has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 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 09:15:28,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:15:28,531 INFO L93 Difference]: Finished difference Result 4593 states and 5538 transitions. [2024-11-18 09:15:28,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-18 09:15:28,531 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 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 1863 [2024-11-18 09:15:28,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:15:28,548 INFO L225 Difference]: With dead ends: 4593 [2024-11-18 09:15:28,548 INFO L226 Difference]: Without dead ends: 3252 [2024-11-18 09:15:28,552 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3773 GetRequests, 3724 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=482, Invalid=1870, Unknown=0, NotChecked=0, Total=2352 [2024-11-18 09:15:28,553 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 114 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:15:28,553 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 208 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:15:28,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3252 states. [2024-11-18 09:15:29,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3252 to 3236. [2024-11-18 09:15:29,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3236 states, 3235 states have (on average 1.1542503863987634) internal successors, (3734), 3235 states have internal predecessors, (3734), 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 09:15:29,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3236 states to 3236 states and 3734 transitions. [2024-11-18 09:15:29,274 INFO L78 Accepts]: Start accepts. Automaton has 3236 states and 3734 transitions. Word has length 1863 [2024-11-18 09:15:29,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:15:29,276 INFO L471 AbstractCegarLoop]: Abstraction has 3236 states and 3734 transitions. [2024-11-18 09:15:29,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 19 states have internal predecessors, (70), 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 09:15:29,276 INFO L276 IsEmpty]: Start isEmpty. Operand 3236 states and 3734 transitions. [2024-11-18 09:15:29,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1968 [2024-11-18 09:15:29,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:15:29,299 INFO L215 NwaCegarLoop]: trace histogram [1656, 64, 36, 36, 36, 16, 16, 16, 16, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:15:29,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-18 09:15:29,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:15:29,500 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:15:29,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:15:29,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1971071109, now seen corresponding path program 11 times [2024-11-18 09:15:29,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:15:29,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987530772] [2024-11-18 09:15:29,501 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:15:29,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms