./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label04.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/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label04.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 6bd5a1b43baf28037f1364b515dd3aa33d97d8b4eac9039e625792f2e3fbcc41 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 16:01:15,543 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 16:01:15,596 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 16:01:15,602 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 16:01:15,602 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 16:01:15,627 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 16:01:15,628 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 16:01:15,629 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 16:01:15,630 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 16:01:15,633 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 16:01:15,633 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 16:01:15,633 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 16:01:15,633 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 16:01:15,634 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 16:01:15,634 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 16:01:15,634 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 16:01:15,634 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 16:01:15,634 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 16:01:15,634 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 16:01:15,635 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 16:01:15,635 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 16:01:15,636 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 16:01:15,637 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 16:01:15,637 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 16:01:15,637 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 16:01:15,637 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 16:01:15,637 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 16:01:15,637 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 16:01:15,638 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 16:01:15,638 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 16:01:15,639 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 16:01:15,639 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 16:01:15,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 16:01:15,639 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 16:01:15,640 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 16:01:15,640 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 16:01:15,640 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 16:01:15,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 16:01:15,641 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 16:01:15,641 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 16:01:15,641 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 16:01:15,642 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 16:01:15,642 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6bd5a1b43baf28037f1364b515dd3aa33d97d8b4eac9039e625792f2e3fbcc41 [2024-11-18 16:01:15,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 16:01:15,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 16:01:15,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 16:01:15,877 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 16:01:15,878 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 16:01:15,879 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label04.c [2024-11-18 16:01:17,240 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 16:01:17,609 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 16:01:17,610 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label04.c [2024-11-18 16:01:17,640 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9a1aec96/e0695b8aefac493a8112db0e1ebfb4ec/FLAG534044c74 [2024-11-18 16:01:17,821 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9a1aec96/e0695b8aefac493a8112db0e1ebfb4ec [2024-11-18 16:01:17,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 16:01:17,824 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 16:01:17,827 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 16:01:17,827 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 16:01:17,832 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 16:01:17,832 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:01:17" (1/1) ... [2024-11-18 16:01:17,835 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13265e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:01:17, skipping insertion in model container [2024-11-18 16:01:17,835 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:01:17" (1/1) ... [2024-11-18 16:01:17,987 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 16:01:18,278 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/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label04.c[8616,8629] [2024-11-18 16:01:18,319 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/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label04.c[15677,15690] [2024-11-18 16:01:19,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 16:01:19,324 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 16:01:19,352 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/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label04.c[8616,8629] [2024-11-18 16:01:19,363 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/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label04.c[15677,15690] [2024-11-18 16:01:19,727 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 16:01:19,751 INFO L204 MainTranslator]: Completed translation [2024-11-18 16:01:19,751 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:01:19 WrapperNode [2024-11-18 16:01:19,751 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 16:01:19,752 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 16:01:19,752 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 16:01:19,752 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 16:01:19,758 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:01:19" (1/1) ... [2024-11-18 16:01:19,800 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:01:19" (1/1) ... [2024-11-18 16:01:19,951 INFO L138 Inliner]: procedures = 34, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 5039 [2024-11-18 16:01:19,952 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 16:01:19,953 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 16:01:19,953 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 16:01:19,953 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 16:01:19,963 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:01:19" (1/1) ... [2024-11-18 16:01:19,963 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:01:19" (1/1) ... [2024-11-18 16:01:20,128 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:01:19" (1/1) ... [2024-11-18 16:01:20,257 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 16:01:20,259 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:01:19" (1/1) ... [2024-11-18 16:01:20,259 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:01:19" (1/1) ... [2024-11-18 16:01:20,365 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:01:19" (1/1) ... [2024-11-18 16:01:20,399 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:01:19" (1/1) ... [2024-11-18 16:01:20,419 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:01:19" (1/1) ... [2024-11-18 16:01:20,436 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:01:19" (1/1) ... [2024-11-18 16:01:20,494 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 16:01:20,495 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 16:01:20,496 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 16:01:20,496 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 16:01:20,497 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:01:19" (1/1) ... [2024-11-18 16:01:20,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 16:01:20,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:01:20,528 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 16:01:20,535 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 16:01:20,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 16:01:20,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 16:01:20,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 16:01:20,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 16:01:20,654 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 16:01:20,658 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 16:01:24,028 INFO L? ?]: Removed 737 outVars from TransFormulas that were not future-live. [2024-11-18 16:01:24,028 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 16:01:24,065 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 16:01:24,066 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-18 16:01:24,067 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:01:24 BoogieIcfgContainer [2024-11-18 16:01:24,067 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 16:01:24,068 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 16:01:24,068 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 16:01:24,071 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 16:01:24,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:01:17" (1/3) ... [2024-11-18 16:01:24,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e1bb92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:01:24, skipping insertion in model container [2024-11-18 16:01:24,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:01:19" (2/3) ... [2024-11-18 16:01:24,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e1bb92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:01:24, skipping insertion in model container [2024-11-18 16:01:24,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:01:24" (3/3) ... [2024-11-18 16:01:24,074 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label04.c [2024-11-18 16:01:24,089 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 16:01:24,089 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-18 16:01:24,160 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 16:01:24,166 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;@3c60ea2c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 16:01:24,166 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-18 16:01:24,172 INFO L276 IsEmpty]: Start isEmpty. Operand has 885 states, 882 states have (on average 1.9058956916099774) internal successors, (1681), 884 states have internal predecessors, (1681), 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 16:01:24,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-18 16:01:24,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:01:24,178 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 16:01:24,179 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:01:24,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:01:24,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1141430702, now seen corresponding path program 1 times [2024-11-18 16:01:24,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:01:24,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951540923] [2024-11-18 16:01:24,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:24,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:01:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:24,388 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 16:01:24,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:01:24,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951540923] [2024-11-18 16:01:24,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951540923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:01:24,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:01:24,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 16:01:24,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736161446] [2024-11-18 16:01:24,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:01:24,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 16:01:24,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:01:24,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 16:01:24,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 16:01:24,420 INFO L87 Difference]: Start difference. First operand has 885 states, 882 states have (on average 1.9058956916099774) internal successors, (1681), 884 states have internal predecessors, (1681), 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 11.0) internal successors, (22), 2 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 16:01:24,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:01:24,482 INFO L93 Difference]: Finished difference Result 1741 states and 3308 transitions. [2024-11-18 16:01:24,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 16:01:24,484 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 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 16:01:24,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:01:24,504 INFO L225 Difference]: With dead ends: 1741 [2024-11-18 16:01:24,508 INFO L226 Difference]: Without dead ends: 819 [2024-11-18 16:01:24,517 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 16:01:24,519 INFO L432 NwaCegarLoop]: 1615 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, 1615 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 16:01:24,521 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:01:24,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2024-11-18 16:01:24,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 819. [2024-11-18 16:01:24,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 817 states have (on average 1.894736842105263) internal successors, (1548), 818 states have internal predecessors, (1548), 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 16:01:24,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1548 transitions. [2024-11-18 16:01:24,590 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1548 transitions. Word has length 22 [2024-11-18 16:01:24,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:01:24,591 INFO L471 AbstractCegarLoop]: Abstraction has 819 states and 1548 transitions. [2024-11-18 16:01:24,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 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 16:01:24,591 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1548 transitions. [2024-11-18 16:01:24,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-18 16:01:24,592 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:01:24,592 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 16:01:24,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 16:01:24,593 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:01:24,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:01:24,593 INFO L85 PathProgramCache]: Analyzing trace with hash 120362348, now seen corresponding path program 1 times [2024-11-18 16:01:24,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:01:24,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863479274] [2024-11-18 16:01:24,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:24,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:01:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:24,757 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 16:01:24,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:01:24,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863479274] [2024-11-18 16:01:24,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863479274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:01:24,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:01:24,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:01:24,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583191096] [2024-11-18 16:01:24,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:01:24,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:01:24,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:01:24,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:01:24,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:01:24,761 INFO L87 Difference]: Start difference. First operand 819 states and 1548 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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 16:01:24,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:01:24,871 INFO L93 Difference]: Finished difference Result 895 states and 1666 transitions. [2024-11-18 16:01:24,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 16:01:24,872 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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 16:01:24,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:01:24,875 INFO L225 Difference]: With dead ends: 895 [2024-11-18 16:01:24,875 INFO L226 Difference]: Without dead ends: 855 [2024-11-18 16:01:24,876 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:01:24,877 INFO L432 NwaCegarLoop]: 1544 mSDtfsCounter, 56 mSDsluCounter, 4603 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 6147 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 16:01:24,877 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 6147 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 16:01:24,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2024-11-18 16:01:24,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 819. [2024-11-18 16:01:24,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 817 states have (on average 1.8665850673194615) internal successors, (1525), 818 states have internal predecessors, (1525), 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 16:01:24,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1525 transitions. [2024-11-18 16:01:24,902 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1525 transitions. Word has length 22 [2024-11-18 16:01:24,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:01:24,902 INFO L471 AbstractCegarLoop]: Abstraction has 819 states and 1525 transitions. [2024-11-18 16:01:24,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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 16:01:24,903 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1525 transitions. [2024-11-18 16:01:24,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-18 16:01:24,904 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:01:24,904 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:01:24,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 16:01:24,904 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:01:24,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:01:24,905 INFO L85 PathProgramCache]: Analyzing trace with hash 550762215, now seen corresponding path program 1 times [2024-11-18 16:01:24,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:01:24,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000765215] [2024-11-18 16:01:24,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:24,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:01:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:25,082 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 16:01:25,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:01:25,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000765215] [2024-11-18 16:01:25,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000765215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:01:25,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:01:25,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:01:25,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919264805] [2024-11-18 16:01:25,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:01:25,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:01:25,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:01:25,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:01:25,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:01:25,084 INFO L87 Difference]: Start difference. First operand 819 states and 1525 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 16:01:25,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:01:25,233 INFO L93 Difference]: Finished difference Result 1107 states and 1981 transitions. [2024-11-18 16:01:25,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:01:25,234 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 44 [2024-11-18 16:01:25,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:01:25,237 INFO L225 Difference]: With dead ends: 1107 [2024-11-18 16:01:25,238 INFO L226 Difference]: Without dead ends: 1071 [2024-11-18 16:01:25,238 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-18 16:01:25,239 INFO L432 NwaCegarLoop]: 1521 mSDtfsCounter, 6262 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6262 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 16:01:25,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6262 Valid, 2187 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 16:01:25,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2024-11-18 16:01:25,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 853. [2024-11-18 16:01:25,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 851 states have (on average 1.8554641598119859) internal successors, (1579), 852 states have internal predecessors, (1579), 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 16:01:25,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1579 transitions. [2024-11-18 16:01:25,253 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1579 transitions. Word has length 44 [2024-11-18 16:01:25,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:01:25,254 INFO L471 AbstractCegarLoop]: Abstraction has 853 states and 1579 transitions. [2024-11-18 16:01:25,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 16:01:25,254 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1579 transitions. [2024-11-18 16:01:25,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-18 16:01:25,255 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:01:25,255 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:01:25,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 16:01:25,255 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:01:25,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:01:25,256 INFO L85 PathProgramCache]: Analyzing trace with hash -414187945, now seen corresponding path program 1 times [2024-11-18 16:01:25,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:01:25,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870266128] [2024-11-18 16:01:25,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:25,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:01:25,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:25,339 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 16:01:25,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:01:25,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870266128] [2024-11-18 16:01:25,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870266128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:01:25,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:01:25,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:01:25,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255730377] [2024-11-18 16:01:25,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:01:25,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:01:25,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:01:25,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:01:25,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:01:25,342 INFO L87 Difference]: Start difference. First operand 853 states and 1579 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 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 16:01:25,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:01:25,366 INFO L93 Difference]: Finished difference Result 982 states and 1782 transitions. [2024-11-18 16:01:25,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:01:25,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 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 46 [2024-11-18 16:01:25,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:01:25,369 INFO L225 Difference]: With dead ends: 982 [2024-11-18 16:01:25,370 INFO L226 Difference]: Without dead ends: 912 [2024-11-18 16:01:25,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:01:25,373 INFO L432 NwaCegarLoop]: 1523 mSDtfsCounter, 1474 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:01:25,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1575 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:01:25,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2024-11-18 16:01:25,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 910. [2024-11-18 16:01:25,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 908 states have (on average 1.8359030837004404) internal successors, (1667), 909 states have internal predecessors, (1667), 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 16:01:25,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1667 transitions. [2024-11-18 16:01:25,389 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1667 transitions. Word has length 46 [2024-11-18 16:01:25,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:01:25,390 INFO L471 AbstractCegarLoop]: Abstraction has 910 states and 1667 transitions. [2024-11-18 16:01:25,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 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 16:01:25,390 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1667 transitions. [2024-11-18 16:01:25,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-18 16:01:25,394 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:01:25,395 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:01:25,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 16:01:25,395 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:01:25,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:01:25,396 INFO L85 PathProgramCache]: Analyzing trace with hash -347694433, now seen corresponding path program 1 times [2024-11-18 16:01:25,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:01:25,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269325234] [2024-11-18 16:01:25,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:25,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:01:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:25,607 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 16:01:25,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:01:25,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269325234] [2024-11-18 16:01:25,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269325234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:01:25,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:01:25,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:01:25,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931617233] [2024-11-18 16:01:25,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:01:25,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:01:25,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:01:25,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:01:25,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:01:25,609 INFO L87 Difference]: Start difference. First operand 910 states and 1667 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 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 16:01:25,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:01:25,705 INFO L93 Difference]: Finished difference Result 1039 states and 1867 transitions. [2024-11-18 16:01:25,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:01:25,706 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 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 46 [2024-11-18 16:01:25,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:01:25,709 INFO L225 Difference]: With dead ends: 1039 [2024-11-18 16:01:25,709 INFO L226 Difference]: Without dead ends: 912 [2024-11-18 16:01:25,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-18 16:01:25,710 INFO L432 NwaCegarLoop]: 1519 mSDtfsCounter, 4446 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4446 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:01:25,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4446 Valid, 1678 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:01:25,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2024-11-18 16:01:25,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 910. [2024-11-18 16:01:25,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 908 states have (on average 1.8337004405286343) internal successors, (1665), 909 states have internal predecessors, (1665), 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 16:01:25,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1665 transitions. [2024-11-18 16:01:25,723 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1665 transitions. Word has length 46 [2024-11-18 16:01:25,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:01:25,724 INFO L471 AbstractCegarLoop]: Abstraction has 910 states and 1665 transitions. [2024-11-18 16:01:25,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 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 16:01:25,724 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1665 transitions. [2024-11-18 16:01:25,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-18 16:01:25,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:01:25,725 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:01:25,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 16:01:25,725 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:01:25,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:01:25,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1691651312, now seen corresponding path program 1 times [2024-11-18 16:01:25,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:01:25,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041896382] [2024-11-18 16:01:25,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:25,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:01:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:25,871 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 16:01:25,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:01:25,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041896382] [2024-11-18 16:01:25,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041896382] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:01:25,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:01:25,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:01:25,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411838654] [2024-11-18 16:01:25,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:01:25,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:01:25,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:01:25,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:01:25,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:01:25,873 INFO L87 Difference]: Start difference. First operand 910 states and 1665 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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 16:01:25,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:01:25,905 INFO L93 Difference]: Finished difference Result 918 states and 1674 transitions. [2024-11-18 16:01:25,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 16:01:25,906 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) Word has length 47 [2024-11-18 16:01:25,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:01:25,909 INFO L225 Difference]: With dead ends: 918 [2024-11-18 16:01:25,909 INFO L226 Difference]: Without dead ends: 916 [2024-11-18 16:01:25,909 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:01:25,910 INFO L432 NwaCegarLoop]: 1522 mSDtfsCounter, 0 mSDsluCounter, 4557 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6079 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:01:25,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6079 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:01:25,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2024-11-18 16:01:25,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 916. [2024-11-18 16:01:25,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 914 states have (on average 1.8271334792122538) internal successors, (1670), 915 states have internal predecessors, (1670), 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 16:01:25,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1670 transitions. [2024-11-18 16:01:25,922 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1670 transitions. Word has length 47 [2024-11-18 16:01:25,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:01:25,923 INFO L471 AbstractCegarLoop]: Abstraction has 916 states and 1670 transitions. [2024-11-18 16:01:25,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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 16:01:25,923 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1670 transitions. [2024-11-18 16:01:25,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-18 16:01:25,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:01:25,924 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:01:25,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 16:01:25,924 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:01:25,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:01:25,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1538886047, now seen corresponding path program 1 times [2024-11-18 16:01:25,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:01:25,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73525224] [2024-11-18 16:01:25,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:25,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:01:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:25,962 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 16:01:25,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:01:25,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73525224] [2024-11-18 16:01:25,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73525224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:01:25,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:01:25,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:01:25,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640833120] [2024-11-18 16:01:25,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:01:25,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:01:25,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:01:25,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:01:25,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:01:25,963 INFO L87 Difference]: Start difference. First operand 916 states and 1670 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 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 16:01:25,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:01:25,982 INFO L93 Difference]: Finished difference Result 1062 states and 1891 transitions. [2024-11-18 16:01:25,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:01:25,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 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) Word has length 48 [2024-11-18 16:01:25,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:01:25,985 INFO L225 Difference]: With dead ends: 1062 [2024-11-18 16:01:25,985 INFO L226 Difference]: Without dead ends: 986 [2024-11-18 16:01:25,985 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:01:25,986 INFO L432 NwaCegarLoop]: 1567 mSDtfsCounter, 1486 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:01:25,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1625 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:01:25,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2024-11-18 16:01:25,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 984. [2024-11-18 16:01:25,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 982 states have (on average 1.8034623217922607) internal successors, (1771), 983 states have internal predecessors, (1771), 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 16:01:26,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1771 transitions. [2024-11-18 16:01:26,000 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1771 transitions. Word has length 48 [2024-11-18 16:01:26,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:01:26,001 INFO L471 AbstractCegarLoop]: Abstraction has 984 states and 1771 transitions. [2024-11-18 16:01:26,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 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 16:01:26,001 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1771 transitions. [2024-11-18 16:01:26,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-18 16:01:26,001 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:01:26,001 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:01:26,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 16:01:26,002 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:01:26,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:01:26,002 INFO L85 PathProgramCache]: Analyzing trace with hash 561679263, now seen corresponding path program 1 times [2024-11-18 16:01:26,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:01:26,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713759832] [2024-11-18 16:01:26,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:26,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:01:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:26,038 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 16:01:26,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:01:26,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713759832] [2024-11-18 16:01:26,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713759832] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:01:26,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:01:26,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:01:26,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58017766] [2024-11-18 16:01:26,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:01:26,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:01:26,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:01:26,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:01:26,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:01:26,040 INFO L87 Difference]: Start difference. First operand 984 states and 1771 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 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 16:01:26,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:01:26,060 INFO L93 Difference]: Finished difference Result 1358 states and 2331 transitions. [2024-11-18 16:01:26,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:01:26,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 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) Word has length 48 [2024-11-18 16:01:26,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:01:26,063 INFO L225 Difference]: With dead ends: 1358 [2024-11-18 16:01:26,063 INFO L226 Difference]: Without dead ends: 1159 [2024-11-18 16:01:26,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:01:26,064 INFO L432 NwaCegarLoop]: 1559 mSDtfsCounter, 1482 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:01:26,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1625 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:01:26,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2024-11-18 16:01:26,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1157. [2024-11-18 16:01:26,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 1155 states have (on average 1.7515151515151515) internal successors, (2023), 1156 states have internal predecessors, (2023), 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 16:01:26,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 2023 transitions. [2024-11-18 16:01:26,080 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 2023 transitions. Word has length 48 [2024-11-18 16:01:26,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:01:26,081 INFO L471 AbstractCegarLoop]: Abstraction has 1157 states and 2023 transitions. [2024-11-18 16:01:26,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 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 16:01:26,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 2023 transitions. [2024-11-18 16:01:26,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-18 16:01:26,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:01:26,081 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:01:26,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 16:01:26,082 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:01:26,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:01:26,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1952355169, now seen corresponding path program 1 times [2024-11-18 16:01:26,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:01:26,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047026297] [2024-11-18 16:01:26,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:26,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:01:26,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:26,114 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 16:01:26,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:01:26,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047026297] [2024-11-18 16:01:26,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047026297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:01:26,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:01:26,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:01:26,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589000438] [2024-11-18 16:01:26,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:01:26,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:01:26,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:01:26,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:01:26,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:01:26,116 INFO L87 Difference]: Start difference. First operand 1157 states and 2023 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 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 16:01:26,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:01:26,181 INFO L93 Difference]: Finished difference Result 1853 states and 3045 transitions. [2024-11-18 16:01:26,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:01:26,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 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) Word has length 48 [2024-11-18 16:01:26,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:01:26,186 INFO L225 Difference]: With dead ends: 1853 [2024-11-18 16:01:26,186 INFO L226 Difference]: Without dead ends: 1481 [2024-11-18 16:01:26,186 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:01:26,187 INFO L432 NwaCegarLoop]: 1557 mSDtfsCounter, 1480 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:01:26,187 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1627 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:01:26,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2024-11-18 16:01:26,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1479. [2024-11-18 16:01:26,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 1477 states have (on average 1.6784021665538253) internal successors, (2479), 1478 states have internal predecessors, (2479), 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 16:01:26,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2479 transitions. [2024-11-18 16:01:26,209 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2479 transitions. Word has length 48 [2024-11-18 16:01:26,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:01:26,209 INFO L471 AbstractCegarLoop]: Abstraction has 1479 states and 2479 transitions. [2024-11-18 16:01:26,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 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 16:01:26,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2479 transitions. [2024-11-18 16:01:26,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-18 16:01:26,210 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:01:26,210 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:01:26,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 16:01:26,210 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:01:26,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:01:26,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1517819233, now seen corresponding path program 1 times [2024-11-18 16:01:26,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:01:26,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222622782] [2024-11-18 16:01:26,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:26,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:01:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:26,246 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 16:01:26,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:01:26,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222622782] [2024-11-18 16:01:26,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222622782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:01:26,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:01:26,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:01:26,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016303115] [2024-11-18 16:01:26,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:01:26,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:01:26,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:01:26,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:01:26,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:01:26,248 INFO L87 Difference]: Start difference. First operand 1479 states and 2479 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 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 16:01:26,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:01:26,274 INFO L93 Difference]: Finished difference Result 2771 states and 4329 transitions. [2024-11-18 16:01:26,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:01:26,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 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) Word has length 48 [2024-11-18 16:01:26,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:01:26,280 INFO L225 Difference]: With dead ends: 2771 [2024-11-18 16:01:26,280 INFO L226 Difference]: Without dead ends: 2077 [2024-11-18 16:01:26,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:01:26,281 INFO L432 NwaCegarLoop]: 1569 mSDtfsCounter, 1484 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:01:26,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1631 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:01:26,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2077 states. [2024-11-18 16:01:26,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2077 to 2075. [2024-11-18 16:01:26,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2075 states, 2073 states have (on average 1.5894838398456343) internal successors, (3295), 2074 states have internal predecessors, (3295), 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 16:01:26,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2075 states to 2075 states and 3295 transitions. [2024-11-18 16:01:26,314 INFO L78 Accepts]: Start accepts. Automaton has 2075 states and 3295 transitions. Word has length 48 [2024-11-18 16:01:26,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:01:26,315 INFO L471 AbstractCegarLoop]: Abstraction has 2075 states and 3295 transitions. [2024-11-18 16:01:26,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 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 16:01:26,315 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 3295 transitions. [2024-11-18 16:01:26,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-18 16:01:26,316 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:01:26,316 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:01:26,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 16:01:26,316 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:01:26,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:01:26,316 INFO L85 PathProgramCache]: Analyzing trace with hash 841795096, now seen corresponding path program 1 times [2024-11-18 16:01:26,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:01:26,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365216993] [2024-11-18 16:01:26,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:26,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:01:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:26,428 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 16:01:26,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:01:26,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365216993] [2024-11-18 16:01:26,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365216993] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:01:26,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:01:26,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:01:26,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281062266] [2024-11-18 16:01:26,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:01:26,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 16:01:26,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:01:26,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 16:01:26,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 16:01:26,430 INFO L87 Difference]: Start difference. First operand 2075 states and 3295 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 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 16:01:33,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:01:33,008 INFO L93 Difference]: Finished difference Result 4330 states and 7604 transitions. [2024-11-18 16:01:33,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:01:33,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 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 16:01:33,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:01:33,035 INFO L225 Difference]: With dead ends: 4330 [2024-11-18 16:01:33,035 INFO L226 Difference]: Without dead ends: 3577 [2024-11-18 16:01:33,037 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 16:01:33,037 INFO L432 NwaCegarLoop]: 779 mSDtfsCounter, 2369 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5154 mSolverCounterSat, 1245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2369 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 6399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1245 IncrementalHoareTripleChecker+Valid, 5154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:01:33,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2369 Valid, 797 Invalid, 6399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1245 Valid, 5154 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2024-11-18 16:01:33,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3577 states. [2024-11-18 16:01:33,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3577 to 3577. [2024-11-18 16:01:33,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3577 states, 3575 states have (on average 1.4744055944055945) internal successors, (5271), 3576 states have internal predecessors, (5271), 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 16:01:33,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3577 states to 3577 states and 5271 transitions. [2024-11-18 16:01:33,194 INFO L78 Accepts]: Start accepts. Automaton has 3577 states and 5271 transitions. Word has length 61 [2024-11-18 16:01:33,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:01:33,194 INFO L471 AbstractCegarLoop]: Abstraction has 3577 states and 5271 transitions. [2024-11-18 16:01:33,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 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 16:01:33,198 INFO L276 IsEmpty]: Start isEmpty. Operand 3577 states and 5271 transitions. [2024-11-18 16:01:33,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:01:33,199 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:01:33,199 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:01:33,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 16:01:33,200 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:01:33,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:01:33,200 INFO L85 PathProgramCache]: Analyzing trace with hash 879514788, now seen corresponding path program 1 times [2024-11-18 16:01:33,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:01:33,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316929161] [2024-11-18 16:01:33,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:33,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:01:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:33,407 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 16:01:33,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:01:33,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316929161] [2024-11-18 16:01:33,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316929161] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:01:33,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:01:33,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:01:33,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194180434] [2024-11-18 16:01:33,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:01:33,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:01:33,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:01:33,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:01:33,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:01:33,413 INFO L87 Difference]: Start difference. First operand 3577 states and 5271 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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 16:01:33,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:01:33,798 INFO L93 Difference]: Finished difference Result 8667 states and 12460 transitions. [2024-11-18 16:01:33,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:01:33,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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 65 [2024-11-18 16:01:33,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:01:33,835 INFO L225 Difference]: With dead ends: 8667 [2024-11-18 16:01:33,839 INFO L226 Difference]: Without dead ends: 7737 [2024-11-18 16:01:33,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:01:33,845 INFO L432 NwaCegarLoop]: 1574 mSDtfsCounter, 4647 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4647 SdHoareTripleChecker+Valid, 3305 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 16:01:33,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4647 Valid, 3305 Invalid, 60 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 16:01:33,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7737 states. [2024-11-18 16:01:34,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7737 to 4689. [2024-11-18 16:01:34,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4689 states, 4687 states have (on average 1.4557286110518455) internal successors, (6823), 4688 states have internal predecessors, (6823), 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 16:01:34,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4689 states to 4689 states and 6823 transitions. [2024-11-18 16:01:34,046 INFO L78 Accepts]: Start accepts. Automaton has 4689 states and 6823 transitions. Word has length 65 [2024-11-18 16:01:34,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:01:34,047 INFO L471 AbstractCegarLoop]: Abstraction has 4689 states and 6823 transitions. [2024-11-18 16:01:34,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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 16:01:34,047 INFO L276 IsEmpty]: Start isEmpty. Operand 4689 states and 6823 transitions. [2024-11-18 16:01:34,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:01:34,048 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:01:34,048 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:01:34,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 16:01:34,049 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:01:34,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:01:34,049 INFO L85 PathProgramCache]: Analyzing trace with hash -97691996, now seen corresponding path program 1 times [2024-11-18 16:01:34,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:01:34,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400812555] [2024-11-18 16:01:34,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:34,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:01:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:34,230 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 16:01:34,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:01:34,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400812555] [2024-11-18 16:01:34,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400812555] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:01:34,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:01:34,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:01:34,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350109308] [2024-11-18 16:01:34,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:01:34,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:01:34,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:01:34,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:01:34,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:01:34,235 INFO L87 Difference]: Start difference. First operand 4689 states and 6823 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 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 16:01:34,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:01:34,576 INFO L93 Difference]: Finished difference Result 9955 states and 14268 transitions. [2024-11-18 16:01:34,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:01:34,577 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-18 16:01:34,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:01:34,603 INFO L225 Difference]: With dead ends: 9955 [2024-11-18 16:01:34,604 INFO L226 Difference]: Without dead ends: 8665 [2024-11-18 16:01:34,606 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:01:34,607 INFO L432 NwaCegarLoop]: 1574 mSDtfsCounter, 4683 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4683 SdHoareTripleChecker+Valid, 3323 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 16:01:34,608 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4683 Valid, 3323 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 16:01:34,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8665 states. [2024-11-18 16:01:34,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8665 to 6441. [2024-11-18 16:01:34,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6441 states, 6439 states have (on average 1.4385774188538594) internal successors, (9263), 6440 states have internal predecessors, (9263), 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 16:01:34,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6441 states to 6441 states and 9263 transitions. [2024-11-18 16:01:34,754 INFO L78 Accepts]: Start accepts. Automaton has 6441 states and 9263 transitions. Word has length 65 [2024-11-18 16:01:34,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:01:34,754 INFO L471 AbstractCegarLoop]: Abstraction has 6441 states and 9263 transitions. [2024-11-18 16:01:34,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 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 16:01:34,754 INFO L276 IsEmpty]: Start isEmpty. Operand 6441 states and 9263 transitions. [2024-11-18 16:01:34,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:01:34,757 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:01:34,757 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:01:34,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 16:01:34,758 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:01:34,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:01:34,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1683240868, now seen corresponding path program 1 times [2024-11-18 16:01:34,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:01:34,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847682794] [2024-11-18 16:01:34,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:34,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:01:34,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:34,844 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 16:01:34,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:01:34,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847682794] [2024-11-18 16:01:34,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847682794] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:01:34,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:01:34,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:01:34,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431180572] [2024-11-18 16:01:34,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:01:34,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:01:34,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:01:34,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:01:34,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:01:34,846 INFO L87 Difference]: Start difference. First operand 6441 states and 9263 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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 16:01:35,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:01:35,083 INFO L93 Difference]: Finished difference Result 11243 states and 16068 transitions. [2024-11-18 16:01:35,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:01:35,084 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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 65 [2024-11-18 16:01:35,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:01:35,100 INFO L225 Difference]: With dead ends: 11243 [2024-11-18 16:01:35,100 INFO L226 Difference]: Without dead ends: 9953 [2024-11-18 16:01:35,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:01:35,104 INFO L432 NwaCegarLoop]: 1574 mSDtfsCounter, 4679 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4679 SdHoareTripleChecker+Valid, 3329 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:01:35,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4679 Valid, 3329 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:01:35,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9953 states. [2024-11-18 16:01:35,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9953 to 7729. [2024-11-18 16:01:35,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7729 states, 7727 states have (on average 1.431732884690048) internal successors, (11063), 7728 states have internal predecessors, (11063), 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 16:01:35,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7729 states to 7729 states and 11063 transitions. [2024-11-18 16:01:35,323 INFO L78 Accepts]: Start accepts. Automaton has 7729 states and 11063 transitions. Word has length 65 [2024-11-18 16:01:35,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:01:35,323 INFO L471 AbstractCegarLoop]: Abstraction has 7729 states and 11063 transitions. [2024-11-18 16:01:35,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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 16:01:35,324 INFO L276 IsEmpty]: Start isEmpty. Operand 7729 states and 11063 transitions. [2024-11-18 16:01:35,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:01:35,325 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:01:35,326 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:01:35,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 16:01:35,326 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:01:35,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:01:35,327 INFO L85 PathProgramCache]: Analyzing trace with hash 2117776804, now seen corresponding path program 1 times [2024-11-18 16:01:35,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:01:35,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925570534] [2024-11-18 16:01:35,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:35,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:01:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:35,438 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 16:01:35,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:01:35,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925570534] [2024-11-18 16:01:35,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925570534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:01:35,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:01:35,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:01:35,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214679259] [2024-11-18 16:01:35,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:01:35,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:01:35,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:01:35,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:01:35,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:01:35,440 INFO L87 Difference]: Start difference. First operand 7729 states and 11063 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:01:35,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:01:35,758 INFO L93 Difference]: Finished difference Result 12531 states and 17868 transitions. [2024-11-18 16:01:35,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:01:35,759 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-18 16:01:35,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:01:35,775 INFO L225 Difference]: With dead ends: 12531 [2024-11-18 16:01:35,775 INFO L226 Difference]: Without dead ends: 11241 [2024-11-18 16:01:35,779 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:01:35,780 INFO L432 NwaCegarLoop]: 1573 mSDtfsCounter, 4649 mSDsluCounter, 1791 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4649 SdHoareTripleChecker+Valid, 3364 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:01:35,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4649 Valid, 3364 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:01:35,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11241 states. [2024-11-18 16:01:35,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11241 to 9017. [2024-11-18 16:01:35,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9017 states, 9015 states have (on average 1.4268441486411536) internal successors, (12863), 9016 states have internal predecessors, (12863), 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 16:01:35,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9017 states to 9017 states and 12863 transitions. [2024-11-18 16:01:35,952 INFO L78 Accepts]: Start accepts. Automaton has 9017 states and 12863 transitions. Word has length 65 [2024-11-18 16:01:35,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:01:35,952 INFO L471 AbstractCegarLoop]: Abstraction has 9017 states and 12863 transitions. [2024-11-18 16:01:35,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:01:35,953 INFO L276 IsEmpty]: Start isEmpty. Operand 9017 states and 12863 transitions. [2024-11-18 16:01:35,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-18 16:01:35,954 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:01:35,954 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:01:35,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 16:01:35,954 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:01:35,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:01:35,955 INFO L85 PathProgramCache]: Analyzing trace with hash -999421060, now seen corresponding path program 1 times [2024-11-18 16:01:35,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:01:35,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053943683] [2024-11-18 16:01:35,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:35,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:01:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:36,021 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:01:36,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:01:36,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053943683] [2024-11-18 16:01:36,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053943683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:01:36,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:01:36,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:01:36,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540180654] [2024-11-18 16:01:36,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:01:36,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:01:36,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:01:36,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:01:36,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:01:36,025 INFO L87 Difference]: Start difference. First operand 9017 states and 12863 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 16:01:36,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:01:36,134 INFO L93 Difference]: Finished difference Result 15749 states and 22281 transitions. [2024-11-18 16:01:36,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:01:36,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2024-11-18 16:01:36,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:01:36,147 INFO L225 Difference]: With dead ends: 15749 [2024-11-18 16:01:36,147 INFO L226 Difference]: Without dead ends: 9019 [2024-11-18 16:01:36,155 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:01:36,155 INFO L432 NwaCegarLoop]: 1551 mSDtfsCounter, 37 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3064 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:01:36,156 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3064 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:01:36,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9019 states. [2024-11-18 16:01:36,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9019 to 9017. [2024-11-18 16:01:36,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9017 states, 9015 states have (on average 1.4130892956184138) internal successors, (12739), 9016 states have internal predecessors, (12739), 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 16:01:36,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9017 states to 9017 states and 12739 transitions. [2024-11-18 16:01:36,437 INFO L78 Accepts]: Start accepts. Automaton has 9017 states and 12739 transitions. Word has length 66 [2024-11-18 16:01:36,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:01:36,437 INFO L471 AbstractCegarLoop]: Abstraction has 9017 states and 12739 transitions. [2024-11-18 16:01:36,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 16:01:36,437 INFO L276 IsEmpty]: Start isEmpty. Operand 9017 states and 12739 transitions. [2024-11-18 16:01:36,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-18 16:01:36,438 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:01:36,438 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:01:36,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 16:01:36,439 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:01:36,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:01:36,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1980195300, now seen corresponding path program 1 times [2024-11-18 16:01:36,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:01:36,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080286946] [2024-11-18 16:01:36,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:36,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:01:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:36,510 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:01:36,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:01:36,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080286946] [2024-11-18 16:01:36,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080286946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:01:36,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:01:36,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:01:36,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395244555] [2024-11-18 16:01:36,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:01:36,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:01:36,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:01:36,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:01:36,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:01:36,514 INFO L87 Difference]: Start difference. First operand 9017 states and 12739 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 16:01:36,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:01:36,569 INFO L93 Difference]: Finished difference Result 11590 states and 16323 transitions. [2024-11-18 16:01:36,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:01:36,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2024-11-18 16:01:36,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:01:36,577 INFO L225 Difference]: With dead ends: 11590 [2024-11-18 16:01:36,577 INFO L226 Difference]: Without dead ends: 4860 [2024-11-18 16:01:36,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:01:36,584 INFO L432 NwaCegarLoop]: 1549 mSDtfsCounter, 31 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3061 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:01:36,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3061 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:01:36,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4860 states. [2024-11-18 16:01:36,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4860 to 4852. [2024-11-18 16:01:36,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4852 states, 4850 states have (on average 1.438762886597938) internal successors, (6978), 4851 states have internal predecessors, (6978), 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 16:01:36,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4852 states to 4852 states and 6978 transitions. [2024-11-18 16:01:36,651 INFO L78 Accepts]: Start accepts. Automaton has 4852 states and 6978 transitions. Word has length 67 [2024-11-18 16:01:36,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:01:36,651 INFO L471 AbstractCegarLoop]: Abstraction has 4852 states and 6978 transitions. [2024-11-18 16:01:36,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 16:01:36,651 INFO L276 IsEmpty]: Start isEmpty. Operand 4852 states and 6978 transitions. [2024-11-18 16:01:36,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-18 16:01:36,652 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:01:36,652 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:01:36,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 16:01:36,653 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:01:36,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:01:36,653 INFO L85 PathProgramCache]: Analyzing trace with hash 823701102, now seen corresponding path program 1 times [2024-11-18 16:01:36,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:01:36,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319459704] [2024-11-18 16:01:36,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:36,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:01:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:36,723 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:01:36,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:01:36,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319459704] [2024-11-18 16:01:36,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319459704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:01:36,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:01:36,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:01:36,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751924022] [2024-11-18 16:01:36,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:01:36,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:01:36,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:01:36,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:01:36,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:01:36,725 INFO L87 Difference]: Start difference. First operand 4852 states and 6978 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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 16:01:36,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:01:36,758 INFO L93 Difference]: Finished difference Result 6132 states and 8740 transitions. [2024-11-18 16:01:36,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:01:36,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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) Word has length 68 [2024-11-18 16:01:36,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:01:36,763 INFO L225 Difference]: With dead ends: 6132 [2024-11-18 16:01:36,763 INFO L226 Difference]: Without dead ends: 3578 [2024-11-18 16:01:36,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:01:36,766 INFO L432 NwaCegarLoop]: 1543 mSDtfsCounter, 33 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3040 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:01:36,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3040 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:01:36,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3578 states. [2024-11-18 16:01:36,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3578 to 3576. [2024-11-18 16:01:36,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3576 states, 3574 states have (on average 1.4538332400671516) internal successors, (5196), 3575 states have internal predecessors, (5196), 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 16:01:36,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3576 states to 3576 states and 5196 transitions. [2024-11-18 16:01:36,806 INFO L78 Accepts]: Start accepts. Automaton has 3576 states and 5196 transitions. Word has length 68 [2024-11-18 16:01:36,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:01:36,806 INFO L471 AbstractCegarLoop]: Abstraction has 3576 states and 5196 transitions. [2024-11-18 16:01:36,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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 16:01:36,806 INFO L276 IsEmpty]: Start isEmpty. Operand 3576 states and 5196 transitions. [2024-11-18 16:01:36,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-18 16:01:36,807 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:01:36,807 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:01:36,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 16:01:36,807 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:01:36,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:01:36,808 INFO L85 PathProgramCache]: Analyzing trace with hash -447735840, now seen corresponding path program 1 times [2024-11-18 16:01:36,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:01:36,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103114715] [2024-11-18 16:01:36,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:36,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:01:36,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:36,862 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:01:36,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:01:36,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103114715] [2024-11-18 16:01:36,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103114715] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:01:36,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:01:36,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:01:36,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386371123] [2024-11-18 16:01:36,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:01:36,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:01:36,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:01:36,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:01:36,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:01:36,864 INFO L87 Difference]: Start difference. First operand 3576 states and 5196 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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 16:01:36,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:01:36,890 INFO L93 Difference]: Finished difference Result 4218 states and 6067 transitions. [2024-11-18 16:01:36,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:01:36,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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 70 [2024-11-18 16:01:36,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:01:36,894 INFO L225 Difference]: With dead ends: 4218 [2024-11-18 16:01:36,894 INFO L226 Difference]: Without dead ends: 2940 [2024-11-18 16:01:36,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:01:36,896 INFO L432 NwaCegarLoop]: 1536 mSDtfsCounter, 30 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:01:36,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3025 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:01:36,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2024-11-18 16:01:36,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 2938. [2024-11-18 16:01:36,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 2936 states have (on average 1.4700272479564032) internal successors, (4316), 2937 states have internal predecessors, (4316), 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 16:01:36,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 4316 transitions. [2024-11-18 16:01:36,925 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 4316 transitions. Word has length 70 [2024-11-18 16:01:36,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:01:36,925 INFO L471 AbstractCegarLoop]: Abstraction has 2938 states and 4316 transitions. [2024-11-18 16:01:36,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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 16:01:36,925 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 4316 transitions. [2024-11-18 16:01:36,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-18 16:01:36,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:01:36,926 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:01:36,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 16:01:36,926 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:01:36,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:01:36,928 INFO L85 PathProgramCache]: Analyzing trace with hash -164665390, now seen corresponding path program 1 times [2024-11-18 16:01:36,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:01:36,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426864949] [2024-11-18 16:01:36,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:36,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:01:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:37,060 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 16:01:37,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:01:37,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426864949] [2024-11-18 16:01:37,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426864949] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:01:37,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129681850] [2024-11-18 16:01:37,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:37,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:01:37,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:01:37,066 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 16:01:37,069 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 16:01:37,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:37,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-18 16:01:37,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:01:37,381 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:01:37,381 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 16:01:37,806 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:01:37,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129681850] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 16:01:37,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 16:01:37,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 6] total 13 [2024-11-18 16:01:37,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566465956] [2024-11-18 16:01:37,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 16:01:37,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 16:01:37,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:01:37,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 16:01:37,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2024-11-18 16:01:37,807 INFO L87 Difference]: Start difference. First operand 2938 states and 4316 transitions. Second operand has 13 states, 13 states have (on average 15.307692307692308) internal successors, (199), 13 states have internal predecessors, (199), 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 16:01:38,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:01:38,297 INFO L93 Difference]: Finished difference Result 5747 states and 7968 transitions. [2024-11-18 16:01:38,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 16:01:38,298 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 15.307692307692308) internal successors, (199), 13 states have internal predecessors, (199), 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 72 [2024-11-18 16:01:38,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:01:38,313 INFO L225 Difference]: With dead ends: 5747 [2024-11-18 16:01:38,313 INFO L226 Difference]: Without dead ends: 5070 [2024-11-18 16:01:38,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=149, Unknown=0, NotChecked=0, Total=240 [2024-11-18 16:01:38,316 INFO L432 NwaCegarLoop]: 1599 mSDtfsCounter, 1759 mSDsluCounter, 6508 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1759 SdHoareTripleChecker+Valid, 8107 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 16:01:38,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1759 Valid, 8107 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 16:01:38,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5070 states. [2024-11-18 16:01:38,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5070 to 4712. [2024-11-18 16:01:38,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4712 states, 4710 states have (on average 1.394267515923567) internal successors, (6567), 4711 states have internal predecessors, (6567), 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 16:01:38,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4712 states to 4712 states and 6567 transitions. [2024-11-18 16:01:38,408 INFO L78 Accepts]: Start accepts. Automaton has 4712 states and 6567 transitions. Word has length 72 [2024-11-18 16:01:38,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:01:38,409 INFO L471 AbstractCegarLoop]: Abstraction has 4712 states and 6567 transitions. [2024-11-18 16:01:38,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.307692307692308) internal successors, (199), 13 states have internal predecessors, (199), 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 16:01:38,409 INFO L276 IsEmpty]: Start isEmpty. Operand 4712 states and 6567 transitions. [2024-11-18 16:01:38,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-18 16:01:38,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:01:38,410 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:01:38,434 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 16:01:38,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:01:38,612 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:01:38,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:01:38,612 INFO L85 PathProgramCache]: Analyzing trace with hash -790906490, now seen corresponding path program 1 times [2024-11-18 16:01:38,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:01:38,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159981145] [2024-11-18 16:01:38,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:38,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:01:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:40,281 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:01:40,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:01:40,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159981145] [2024-11-18 16:01:40,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159981145] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:01:40,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690226431] [2024-11-18 16:01:40,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:40,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:01:40,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:01:40,286 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 16:01:40,288 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 16:01:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:40,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-18 16:01:40,390 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:01:40,981 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:01:40,985 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 16:01:42,012 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:01:42,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690226431] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 16:01:42,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 16:01:42,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 34 [2024-11-18 16:01:42,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820278156] [2024-11-18 16:01:42,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 16:01:42,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-18 16:01:42,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:01:42,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-18 16:01:42,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=987, Unknown=0, NotChecked=0, Total=1122 [2024-11-18 16:01:42,018 INFO L87 Difference]: Start difference. First operand 4712 states and 6567 transitions. Second operand has 34 states, 34 states have (on average 5.735294117647059) internal successors, (195), 34 states have internal predecessors, (195), 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 16:01:46,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:01:46,626 INFO L93 Difference]: Finished difference Result 13293 states and 17835 transitions. [2024-11-18 16:01:46,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-18 16:01:46,627 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.735294117647059) internal successors, (195), 34 states have internal predecessors, (195), 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 73 [2024-11-18 16:01:46,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:01:46,664 INFO L225 Difference]: With dead ends: 13293 [2024-11-18 16:01:46,664 INFO L226 Difference]: Without dead ends: 10930 [2024-11-18 16:01:46,675 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1675 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1260, Invalid=5546, Unknown=0, NotChecked=0, Total=6806 [2024-11-18 16:01:46,676 INFO L432 NwaCegarLoop]: 1495 mSDtfsCounter, 26205 mSDsluCounter, 6400 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26205 SdHoareTripleChecker+Valid, 7895 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 16:01:46,676 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26205 Valid, 7895 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 16:01:46,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10930 states. [2024-11-18 16:01:47,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10930 to 10683. [2024-11-18 16:01:47,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10683 states, 10681 states have (on average 1.3316168898043255) internal successors, (14223), 10682 states have internal predecessors, (14223), 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 16:01:47,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10683 states to 10683 states and 14223 transitions. [2024-11-18 16:01:47,130 INFO L78 Accepts]: Start accepts. Automaton has 10683 states and 14223 transitions. Word has length 73 [2024-11-18 16:01:47,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:01:47,130 INFO L471 AbstractCegarLoop]: Abstraction has 10683 states and 14223 transitions. [2024-11-18 16:01:47,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.735294117647059) internal successors, (195), 34 states have internal predecessors, (195), 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 16:01:47,131 INFO L276 IsEmpty]: Start isEmpty. Operand 10683 states and 14223 transitions. [2024-11-18 16:01:47,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-18 16:01:47,135 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:01:47,135 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:01:47,159 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 16:01:47,336 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,SelfDestructingSolverStorable20 [2024-11-18 16:01:47,340 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:01:47,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:01:47,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1110377720, now seen corresponding path program 1 times [2024-11-18 16:01:47,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:01:47,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239503101] [2024-11-18 16:01:47,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:47,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:01:47,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:49,094 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:01:49,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:01:49,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239503101] [2024-11-18 16:01:49,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239503101] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:01:49,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840652688] [2024-11-18 16:01:49,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:49,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:01:49,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:01:49,097 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 16:01:49,098 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 16:01:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:49,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 16:01:49,198 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:01:49,708 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:01:49,709 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 16:01:50,405 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:01:50,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840652688] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 16:01:50,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 16:01:50,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2024-11-18 16:01:50,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585164273] [2024-11-18 16:01:50,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 16:01:50,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-18 16:01:50,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:01:50,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-18 16:01:50,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2024-11-18 16:01:50,408 INFO L87 Difference]: Start difference. First operand 10683 states and 14223 transitions. Second operand has 26 states, 26 states have (on average 6.730769230769231) internal successors, (175), 25 states have internal predecessors, (175), 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 16:01:51,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:01:51,657 INFO L93 Difference]: Finished difference Result 27291 states and 35718 transitions. [2024-11-18 16:01:51,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 16:01:51,658 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.730769230769231) internal successors, (175), 25 states have internal predecessors, (175), 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 73 [2024-11-18 16:01:51,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:01:51,717 INFO L225 Difference]: With dead ends: 27291 [2024-11-18 16:01:51,718 INFO L226 Difference]: Without dead ends: 19493 [2024-11-18 16:01:51,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=287, Invalid=1045, Unknown=0, NotChecked=0, Total=1332 [2024-11-18 16:01:51,745 INFO L432 NwaCegarLoop]: 1498 mSDtfsCounter, 16688 mSDsluCounter, 3301 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16688 SdHoareTripleChecker+Valid, 4799 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:01:51,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16688 Valid, 4799 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:01:51,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19493 states. [2024-11-18 16:01:52,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19493 to 19291. [2024-11-18 16:01:52,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19291 states, 19289 states have (on average 1.29638654155218) internal successors, (25006), 19290 states have internal predecessors, (25006), 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 16:01:52,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19291 states to 19291 states and 25006 transitions. [2024-11-18 16:01:52,507 INFO L78 Accepts]: Start accepts. Automaton has 19291 states and 25006 transitions. Word has length 73 [2024-11-18 16:01:52,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:01:52,507 INFO L471 AbstractCegarLoop]: Abstraction has 19291 states and 25006 transitions. [2024-11-18 16:01:52,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.730769230769231) internal successors, (175), 25 states have internal predecessors, (175), 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 16:01:52,508 INFO L276 IsEmpty]: Start isEmpty. Operand 19291 states and 25006 transitions. [2024-11-18 16:01:52,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-18 16:01:52,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:01:52,510 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:01:52,528 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 16:01:52,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:01:52,712 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:01:52,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:01:52,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1917258732, now seen corresponding path program 1 times [2024-11-18 16:01:52,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:01:52,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568189646] [2024-11-18 16:01:52,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:52,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:01:52,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:53,265 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:01:53,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:01:53,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568189646] [2024-11-18 16:01:53,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568189646] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:01:53,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359549087] [2024-11-18 16:01:53,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:53,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:01:53,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:01:53,268 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 16:01:53,269 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 16:01:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:53,431 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-18 16:01:53,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:01:53,969 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:01:53,970 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 16:01:54,679 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:01:54,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359549087] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 16:01:54,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 16:01:54,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2024-11-18 16:01:54,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719927435] [2024-11-18 16:01:54,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 16:01:54,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-18 16:01:54,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:01:54,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-18 16:01:54,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2024-11-18 16:01:54,681 INFO L87 Difference]: Start difference. First operand 19291 states and 25006 transitions. Second operand has 22 states, 22 states have (on average 7.0) internal successors, (154), 21 states have internal predecessors, (154), 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 16:01:55,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:01:55,677 INFO L93 Difference]: Finished difference Result 49082 states and 62870 transitions. [2024-11-18 16:01:55,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 16:01:55,678 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.0) internal successors, (154), 21 states have internal predecessors, (154), 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 74 [2024-11-18 16:01:55,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:01:55,775 INFO L225 Difference]: With dead ends: 49082 [2024-11-18 16:01:55,775 INFO L226 Difference]: Without dead ends: 32971 [2024-11-18 16:01:55,820 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=243, Invalid=687, Unknown=0, NotChecked=0, Total=930 [2024-11-18 16:01:55,823 INFO L432 NwaCegarLoop]: 1498 mSDtfsCounter, 15115 mSDsluCounter, 3119 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15115 SdHoareTripleChecker+Valid, 4617 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 16:01:55,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15115 Valid, 4617 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 16:01:55,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32971 states. [2024-11-18 16:01:57,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32971 to 32967. [2024-11-18 16:01:57,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32967 states, 32965 states have (on average 1.2795995753071439) internal successors, (42182), 32966 states have internal predecessors, (42182), 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 16:01:57,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32967 states to 32967 states and 42182 transitions. [2024-11-18 16:01:57,468 INFO L78 Accepts]: Start accepts. Automaton has 32967 states and 42182 transitions. Word has length 74 [2024-11-18 16:01:57,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:01:57,468 INFO L471 AbstractCegarLoop]: Abstraction has 32967 states and 42182 transitions. [2024-11-18 16:01:57,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.0) internal successors, (154), 21 states have internal predecessors, (154), 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 16:01:57,469 INFO L276 IsEmpty]: Start isEmpty. Operand 32967 states and 42182 transitions. [2024-11-18 16:01:57,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-18 16:01:57,470 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:01:57,470 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:01:57,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 16:01:57,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:01:57,675 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:01:57,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:01:57,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1897348188, now seen corresponding path program 1 times [2024-11-18 16:01:57,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:01:57,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631622602] [2024-11-18 16:01:57,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:57,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:01:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:58,580 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:01:58,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:01:58,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631622602] [2024-11-18 16:01:58,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631622602] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:01:58,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961081435] [2024-11-18 16:01:58,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:58,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:01:58,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:01:58,587 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 16:01:58,589 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 16:01:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:58,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-18 16:01:58,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:01:59,484 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:01:59,484 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 16:02:00,356 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:02:00,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961081435] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 16:02:00,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 16:02:00,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 32 [2024-11-18 16:02:00,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369246785] [2024-11-18 16:02:00,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 16:02:00,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-18 16:02:00,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:02:00,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-18 16:02:00,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=865, Unknown=0, NotChecked=0, Total=992 [2024-11-18 16:02:00,360 INFO L87 Difference]: Start difference. First operand 32967 states and 42182 transitions. Second operand has 32 states, 32 states have (on average 5.625) internal successors, (180), 32 states have internal predecessors, (180), 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 16:02:02,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:02:02,379 INFO L93 Difference]: Finished difference Result 62691 states and 80401 transitions. [2024-11-18 16:02:02,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-18 16:02:02,380 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.625) internal successors, (180), 32 states have internal predecessors, (180), 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 74 [2024-11-18 16:02:02,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:02:02,525 INFO L225 Difference]: With dead ends: 62691 [2024-11-18 16:02:02,525 INFO L226 Difference]: Without dead ends: 51563 [2024-11-18 16:02:02,569 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=516, Invalid=1934, Unknown=0, NotChecked=0, Total=2450 [2024-11-18 16:02:02,573 INFO L432 NwaCegarLoop]: 1516 mSDtfsCounter, 12961 mSDsluCounter, 13606 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12961 SdHoareTripleChecker+Valid, 15122 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:02:02,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12961 Valid, 15122 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:02:02,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51563 states. [2024-11-18 16:02:04,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51563 to 30235. [2024-11-18 16:02:04,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30235 states, 30233 states have (on average 1.2778420930771013) internal successors, (38633), 30234 states have internal predecessors, (38633), 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 16:02:04,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30235 states to 30235 states and 38633 transitions. [2024-11-18 16:02:04,282 INFO L78 Accepts]: Start accepts. Automaton has 30235 states and 38633 transitions. Word has length 74 [2024-11-18 16:02:04,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:02:04,282 INFO L471 AbstractCegarLoop]: Abstraction has 30235 states and 38633 transitions. [2024-11-18 16:02:04,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.625) internal successors, (180), 32 states have internal predecessors, (180), 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 16:02:04,282 INFO L276 IsEmpty]: Start isEmpty. Operand 30235 states and 38633 transitions. [2024-11-18 16:02:04,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-18 16:02:04,286 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:02:04,286 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:02:04,320 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 16:02:04,492 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,SelfDestructingSolverStorable23 [2024-11-18 16:02:04,493 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:02:04,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:02:04,493 INFO L85 PathProgramCache]: Analyzing trace with hash 655774848, now seen corresponding path program 1 times [2024-11-18 16:02:04,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:02:04,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963851033] [2024-11-18 16:02:04,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:02:04,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:02:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:02:04,875 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:02:04,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:02:04,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963851033] [2024-11-18 16:02:04,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963851033] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:02:04,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572639412] [2024-11-18 16:02:04,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:02:04,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:02:04,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:02:04,880 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 16:02:04,882 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 16:02:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:02:05,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-18 16:02:05,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:02:17,171 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:02:17,171 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 16:02:23,969 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:02:23,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572639412] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 16:02:23,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 16:02:23,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 30, 29] total 64 [2024-11-18 16:02:23,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685569960] [2024-11-18 16:02:23,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 16:02:23,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-18 16:02:23,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:02:23,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-18 16:02:23,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=751, Invalid=3281, Unknown=0, NotChecked=0, Total=4032 [2024-11-18 16:02:23,974 INFO L87 Difference]: Start difference. First operand 30235 states and 38633 transitions. Second operand has 64 states, 64 states have (on average 3.1875) internal successors, (204), 64 states have internal predecessors, (204), 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)