./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label09.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 1d5f7b2f1816dd8d73aabb707e1456dfc72cb3843c81f782dda241fa9bcec7fd --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 21:20:57,296 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 21:20:57,376 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 21:20:57,381 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 21:20:57,384 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 21:20:57,415 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 21:20:57,416 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 21:20:57,416 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 21:20:57,416 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 21:20:57,417 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 21:20:57,417 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 21:20:57,418 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 21:20:57,418 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 21:20:57,419 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 21:20:57,421 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 21:20:57,421 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 21:20:57,422 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 21:20:57,422 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 21:20:57,422 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 21:20:57,422 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 21:20:57,423 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 21:20:57,423 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 21:20:57,423 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 21:20:57,424 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 21:20:57,424 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 21:20:57,424 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 21:20:57,424 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 21:20:57,425 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 21:20:57,425 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 21:20:57,425 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 21:20:57,425 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 21:20:57,426 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 21:20:57,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 21:20:57,430 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 21:20:57,431 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 21:20:57,431 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 21:20:57,431 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 21:20:57,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 21:20:57,431 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 21:20:57,432 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 21:20:57,432 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 21:20:57,434 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 21:20:57,434 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d5f7b2f1816dd8d73aabb707e1456dfc72cb3843c81f782dda241fa9bcec7fd [2024-10-12 21:20:57,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 21:20:57,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 21:20:57,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 21:20:57,725 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 21:20:57,725 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 21:20:57,727 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label09.c [2024-10-12 21:20:59,066 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 21:20:59,571 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 21:20:59,572 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label09.c [2024-10-12 21:20:59,601 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94399e6c8/58df247a437d402383ce75e89b7cc763/FLAGd8f19eb81 [2024-10-12 21:20:59,653 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94399e6c8/58df247a437d402383ce75e89b7cc763 [2024-10-12 21:20:59,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 21:20:59,657 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 21:20:59,658 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 21:20:59,658 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 21:20:59,667 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 21:20:59,672 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:20:59" (1/1) ... [2024-10-12 21:20:59,673 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@358ee22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:20:59, skipping insertion in model container [2024-10-12 21:20:59,673 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:20:59" (1/1) ... [2024-10-12 21:20:59,766 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 21:21:00,071 WARN L248 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.3.1.ufo.BOUNDED-6.pals+Problem12_label09.c[6391,6404] [2024-10-12 21:21:00,128 WARN L248 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.3.1.ufo.BOUNDED-6.pals+Problem12_label09.c[14139,14152] [2024-10-12 21:21:00,754 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 21:21:00,764 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 21:21:00,798 WARN L248 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.3.1.ufo.BOUNDED-6.pals+Problem12_label09.c[6391,6404] [2024-10-12 21:21:00,815 WARN L248 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.3.1.ufo.BOUNDED-6.pals+Problem12_label09.c[14139,14152] [2024-10-12 21:21:01,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 21:21:01,211 INFO L204 MainTranslator]: Completed translation [2024-10-12 21:21:01,212 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:21:01 WrapperNode [2024-10-12 21:21:01,212 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 21:21:01,213 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 21:21:01,213 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 21:21:01,213 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 21:21:01,220 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:21:01" (1/1) ... [2024-10-12 21:21:01,278 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:21:01" (1/1) ... [2024-10-12 21:21:01,571 INFO L138 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4984 [2024-10-12 21:21:01,571 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 21:21:01,573 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 21:21:01,573 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 21:21:01,573 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 21:21:01,584 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:21:01" (1/1) ... [2024-10-12 21:21:01,585 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:21:01" (1/1) ... [2024-10-12 21:21:01,633 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:21:01" (1/1) ... [2024-10-12 21:21:01,808 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]. [2024-10-12 21:21:01,809 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:21:01" (1/1) ... [2024-10-12 21:21:01,809 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:21:01" (1/1) ... [2024-10-12 21:21:01,971 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:21:01" (1/1) ... [2024-10-12 21:21:01,999 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:21:01" (1/1) ... [2024-10-12 21:21:02,043 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:21:01" (1/1) ... [2024-10-12 21:21:02,067 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:21:01" (1/1) ... [2024-10-12 21:21:02,122 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 21:21:02,123 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 21:21:02,123 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 21:21:02,123 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 21:21:02,124 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:21:01" (1/1) ... [2024-10-12 21:21:02,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 21:21:02,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:21:02,158 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) [2024-10-12 21:21:02,161 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 [2024-10-12 21:21:02,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 21:21:02,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 21:21:02,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 21:21:02,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 21:21:02,284 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 21:21:02,286 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 21:21:06,417 INFO L? ?]: Removed 732 outVars from TransFormulas that were not future-live. [2024-10-12 21:21:06,417 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 21:21:06,490 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 21:21:06,494 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-12 21:21:06,494 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:21:06 BoogieIcfgContainer [2024-10-12 21:21:06,494 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 21:21:06,496 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 21:21:06,497 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 21:21:06,500 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 21:21:06,501 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:20:59" (1/3) ... [2024-10-12 21:21:06,502 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd9f3f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:21:06, skipping insertion in model container [2024-10-12 21:21:06,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:21:01" (2/3) ... [2024-10-12 21:21:06,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd9f3f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:21:06, skipping insertion in model container [2024-10-12 21:21:06,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:21:06" (3/3) ... [2024-10-12 21:21:06,505 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label09.c [2024-10-12 21:21:06,522 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 21:21:06,522 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-12 21:21:06,611 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 21:21:06,621 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;@3165bf08, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 21:21:06,621 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-12 21:21:06,629 INFO L276 IsEmpty]: Start isEmpty. Operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:06,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-12 21:21:06,640 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:06,641 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:21:06,641 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:06,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:06,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1947968790, now seen corresponding path program 1 times [2024-10-12 21:21:06,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:06,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594544269] [2024-10-12 21:21:06,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:06,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:06,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:06,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:06,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594544269] [2024-10-12 21:21:06,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594544269] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:21:06,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:21:06,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 21:21:06,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70753443] [2024-10-12 21:21:06,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:21:06,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 21:21:06,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:06,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 21:21:06,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 21:21:07,000 INFO L87 Difference]: Start difference. First operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 0 states have call successors, (0), 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 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:07,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:07,102 INFO L93 Difference]: Finished difference Result 1594 states and 3146 transitions. [2024-10-12 21:21:07,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 21:21:07,106 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2024-10-12 21:21:07,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:07,124 INFO L225 Difference]: With dead ends: 1594 [2024-10-12 21:21:07,124 INFO L226 Difference]: Without dead ends: 803 [2024-10-12 21:21:07,131 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 [2024-10-12 21:21:07,134 INFO L432 NwaCegarLoop]: 1521 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1521 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 [2024-10-12 21:21:07,136 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1521 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:21:07,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2024-10-12 21:21:07,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2024-10-12 21:21:07,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.898876404494382) internal successors, (1521), 802 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:07,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1521 transitions. [2024-10-12 21:21:07,229 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1521 transitions. Word has length 17 [2024-10-12 21:21:07,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:07,229 INFO L471 AbstractCegarLoop]: Abstraction has 803 states and 1521 transitions. [2024-10-12 21:21:07,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:07,230 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1521 transitions. [2024-10-12 21:21:07,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-12 21:21:07,231 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:07,231 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:21:07,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 21:21:07,231 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:07,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:07,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1760192492, now seen corresponding path program 1 times [2024-10-12 21:21:07,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:07,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020368656] [2024-10-12 21:21:07,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:07,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:07,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:07,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:07,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:07,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020368656] [2024-10-12 21:21:07,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020368656] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:21:07,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:21:07,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 21:21:07,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801769442] [2024-10-12 21:21:07,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:21:07,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 21:21:07,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:07,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 21:21:07,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 21:21:07,414 INFO L87 Difference]: Start difference. First operand 803 states and 1521 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:07,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:07,497 INFO L93 Difference]: Finished difference Result 864 states and 1616 transitions. [2024-10-12 21:21:07,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 21:21:07,498 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2024-10-12 21:21:07,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:07,503 INFO L225 Difference]: With dead ends: 864 [2024-10-12 21:21:07,504 INFO L226 Difference]: Without dead ends: 832 [2024-10-12 21:21:07,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 21:21:07,506 INFO L432 NwaCegarLoop]: 1516 mSDtfsCounter, 45 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 4527 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:07,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 4527 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:21:07,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2024-10-12 21:21:07,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 803. [2024-10-12 21:21:07,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.8789013732833957) internal successors, (1505), 802 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:07,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1505 transitions. [2024-10-12 21:21:07,536 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1505 transitions. Word has length 17 [2024-10-12 21:21:07,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:07,537 INFO L471 AbstractCegarLoop]: Abstraction has 803 states and 1505 transitions. [2024-10-12 21:21:07,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:07,538 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1505 transitions. [2024-10-12 21:21:07,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-12 21:21:07,539 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:07,540 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:21:07,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 21:21:07,540 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:07,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:07,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1166183952, now seen corresponding path program 1 times [2024-10-12 21:21:07,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:07,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100074071] [2024-10-12 21:21:07,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:07,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:07,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:07,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:07,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100074071] [2024-10-12 21:21:07,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100074071] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:21:07,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:21:07,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 21:21:07,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436715439] [2024-10-12 21:21:07,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:21:07,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 21:21:07,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:07,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 21:21:07,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:21:07,741 INFO L87 Difference]: Start difference. First operand 803 states and 1505 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:07,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:07,884 INFO L93 Difference]: Finished difference Result 977 states and 1781 transitions. [2024-10-12 21:21:07,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:21:07,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-10-12 21:21:07,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:07,889 INFO L225 Difference]: With dead ends: 977 [2024-10-12 21:21:07,890 INFO L226 Difference]: Without dead ends: 948 [2024-10-12 21:21:07,890 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-12 21:21:07,891 INFO L432 NwaCegarLoop]: 1498 mSDtfsCounter, 4578 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4578 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:07,892 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4578 Valid, 1841 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 21:21:07,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2024-10-12 21:21:07,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 830. [2024-10-12 21:21:07,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8695652173913044) internal successors, (1548), 829 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) [2024-10-12 21:21:07,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1548 transitions. [2024-10-12 21:21:07,914 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1548 transitions. Word has length 32 [2024-10-12 21:21:07,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:07,918 INFO L471 AbstractCegarLoop]: Abstraction has 830 states and 1548 transitions. [2024-10-12 21:21:07,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:07,918 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1548 transitions. [2024-10-12 21:21:07,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-12 21:21:07,919 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:07,919 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] [2024-10-12 21:21:07,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 21:21:07,920 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:07,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:07,920 INFO L85 PathProgramCache]: Analyzing trace with hash 160996032, now seen corresponding path program 1 times [2024-10-12 21:21:07,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:07,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137662723] [2024-10-12 21:21:07,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:07,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:07,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:07,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:07,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137662723] [2024-10-12 21:21:07,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137662723] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:21:07,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:21:07,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:21:07,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842681699] [2024-10-12 21:21:08,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:21:08,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:21:08,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:08,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:21:08,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:21:08,001 INFO L87 Difference]: Start difference. First operand 830 states and 1548 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:08,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:08,033 INFO L93 Difference]: Finished difference Result 931 states and 1707 transitions. [2024-10-12 21:21:08,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:21:08,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2024-10-12 21:21:08,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:08,037 INFO L225 Difference]: With dead ends: 931 [2024-10-12 21:21:08,038 INFO L226 Difference]: Without dead ends: 875 [2024-10-12 21:21:08,038 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 [2024-10-12 21:21:08,039 INFO L432 NwaCegarLoop]: 1500 mSDtfsCounter, 1464 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:08,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 1540 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:21:08,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2024-10-12 21:21:08,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 873. [2024-10-12 21:21:08,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8530424799081515) internal successors, (1614), 872 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:08,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1614 transitions. [2024-10-12 21:21:08,059 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1614 transitions. Word has length 34 [2024-10-12 21:21:08,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:08,060 INFO L471 AbstractCegarLoop]: Abstraction has 873 states and 1614 transitions. [2024-10-12 21:21:08,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:08,061 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1614 transitions. [2024-10-12 21:21:08,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-12 21:21:08,064 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:08,064 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] [2024-10-12 21:21:08,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 21:21:08,064 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:08,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:08,065 INFO L85 PathProgramCache]: Analyzing trace with hash 163140984, now seen corresponding path program 1 times [2024-10-12 21:21:08,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:08,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630468278] [2024-10-12 21:21:08,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:08,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:08,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:08,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:08,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:08,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630468278] [2024-10-12 21:21:08,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630468278] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:21:08,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:21:08,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 21:21:08,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104851653] [2024-10-12 21:21:08,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:21:08,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 21:21:08,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:08,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 21:21:08,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:21:08,249 INFO L87 Difference]: Start difference. First operand 873 states and 1614 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:08,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:08,336 INFO L93 Difference]: Finished difference Result 974 states and 1770 transitions. [2024-10-12 21:21:08,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 21:21:08,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2024-10-12 21:21:08,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:08,341 INFO L225 Difference]: With dead ends: 974 [2024-10-12 21:21:08,341 INFO L226 Difference]: Without dead ends: 875 [2024-10-12 21:21:08,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:21:08,343 INFO L432 NwaCegarLoop]: 1497 mSDtfsCounter, 1473 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 1620 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:08,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 1620 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:21:08,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2024-10-12 21:21:08,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 873. [2024-10-12 21:21:08,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8507462686567164) internal successors, (1612), 872 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:08,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1612 transitions. [2024-10-12 21:21:08,365 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1612 transitions. Word has length 34 [2024-10-12 21:21:08,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:08,366 INFO L471 AbstractCegarLoop]: Abstraction has 873 states and 1612 transitions. [2024-10-12 21:21:08,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:08,367 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1612 transitions. [2024-10-12 21:21:08,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-12 21:21:08,371 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:08,371 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:21:08,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 21:21:08,371 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:08,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:08,372 INFO L85 PathProgramCache]: Analyzing trace with hash 634048377, now seen corresponding path program 1 times [2024-10-12 21:21:08,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:08,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578719449] [2024-10-12 21:21:08,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:08,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:08,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:08,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:08,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578719449] [2024-10-12 21:21:08,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578719449] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:21:08,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:21:08,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 21:21:08,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703201876] [2024-10-12 21:21:08,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:21:08,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 21:21:08,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:08,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 21:21:08,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 21:21:08,519 INFO L87 Difference]: Start difference. First operand 873 states and 1612 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:08,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:08,556 INFO L93 Difference]: Finished difference Result 879 states and 1619 transitions. [2024-10-12 21:21:08,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 21:21:08,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-10-12 21:21:08,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:08,563 INFO L225 Difference]: With dead ends: 879 [2024-10-12 21:21:08,563 INFO L226 Difference]: Without dead ends: 877 [2024-10-12 21:21:08,564 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 21:21:08,565 INFO L432 NwaCegarLoop]: 1501 mSDtfsCounter, 0 mSDsluCounter, 2994 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4495 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:08,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4495 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:21:08,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2024-10-12 21:21:08,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 877. [2024-10-12 21:21:08,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 875 states have (on average 1.8457142857142856) internal successors, (1615), 876 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:08,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1615 transitions. [2024-10-12 21:21:08,586 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1615 transitions. Word has length 35 [2024-10-12 21:21:08,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:08,588 INFO L471 AbstractCegarLoop]: Abstraction has 877 states and 1615 transitions. [2024-10-12 21:21:08,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:08,588 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1615 transitions. [2024-10-12 21:21:08,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-12 21:21:08,590 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:08,591 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:21:08,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 21:21:08,591 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:08,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:08,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1174229944, now seen corresponding path program 1 times [2024-10-12 21:21:08,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:08,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100476454] [2024-10-12 21:21:08,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:08,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:08,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:08,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:08,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:08,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100476454] [2024-10-12 21:21:08,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100476454] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:21:08,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:21:08,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:21:08,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079292323] [2024-10-12 21:21:08,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:21:08,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:21:08,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:08,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:21:08,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:21:08,647 INFO L87 Difference]: Start difference. First operand 877 states and 1615 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:08,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:08,741 INFO L93 Difference]: Finished difference Result 991 states and 1788 transitions. [2024-10-12 21:21:08,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:21:08,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-10-12 21:21:08,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:08,745 INFO L225 Difference]: With dead ends: 991 [2024-10-12 21:21:08,745 INFO L226 Difference]: Without dead ends: 931 [2024-10-12 21:21:08,746 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 [2024-10-12 21:21:08,749 INFO L432 NwaCegarLoop]: 1532 mSDtfsCounter, 1474 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1578 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 [2024-10-12 21:21:08,749 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1578 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:21:08,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2024-10-12 21:21:08,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 929. [2024-10-12 21:21:08,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 927 states have (on average 1.825242718446602) internal successors, (1692), 928 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:08,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1692 transitions. [2024-10-12 21:21:08,775 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1692 transitions. Word has length 36 [2024-10-12 21:21:08,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:08,775 INFO L471 AbstractCegarLoop]: Abstraction has 929 states and 1692 transitions. [2024-10-12 21:21:08,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:08,775 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1692 transitions. [2024-10-12 21:21:08,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-12 21:21:08,776 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:08,776 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:21:08,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 21:21:08,777 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:08,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:08,777 INFO L85 PathProgramCache]: Analyzing trace with hash 548573880, now seen corresponding path program 1 times [2024-10-12 21:21:08,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:08,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406726590] [2024-10-12 21:21:08,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:08,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:08,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:08,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:08,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406726590] [2024-10-12 21:21:08,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406726590] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:21:08,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:21:08,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:21:08,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058118729] [2024-10-12 21:21:08,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:21:08,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:21:08,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:08,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:21:08,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:21:08,836 INFO L87 Difference]: Start difference. First operand 929 states and 1692 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:08,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:08,873 INFO L93 Difference]: Finished difference Result 1211 states and 2112 transitions. [2024-10-12 21:21:08,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:21:08,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-10-12 21:21:08,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:08,880 INFO L225 Difference]: With dead ends: 1211 [2024-10-12 21:21:08,880 INFO L226 Difference]: Without dead ends: 1058 [2024-10-12 21:21:08,881 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 [2024-10-12 21:21:08,882 INFO L432 NwaCegarLoop]: 1534 mSDtfsCounter, 1472 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1584 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 [2024-10-12 21:21:08,883 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1584 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:21:08,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2024-10-12 21:21:08,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 1056. [2024-10-12 21:21:08,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 1054 states have (on average 1.777988614800759) internal successors, (1874), 1055 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:08,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1874 transitions. [2024-10-12 21:21:08,914 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1874 transitions. Word has length 36 [2024-10-12 21:21:08,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:08,915 INFO L471 AbstractCegarLoop]: Abstraction has 1056 states and 1874 transitions. [2024-10-12 21:21:08,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:08,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1874 transitions. [2024-10-12 21:21:08,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-12 21:21:08,917 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:08,917 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:21:08,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 21:21:08,917 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:08,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:08,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1437307320, now seen corresponding path program 1 times [2024-10-12 21:21:08,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:08,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522645375] [2024-10-12 21:21:08,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:08,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:08,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:08,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:08,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:08,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522645375] [2024-10-12 21:21:08,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522645375] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:21:08,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:21:08,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:21:08,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127963846] [2024-10-12 21:21:08,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:21:08,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:21:08,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:08,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:21:08,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:21:08,978 INFO L87 Difference]: Start difference. First operand 1056 states and 1874 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:09,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:09,024 INFO L93 Difference]: Finished difference Result 1568 states and 2616 transitions. [2024-10-12 21:21:09,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:21:09,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-10-12 21:21:09,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:09,031 INFO L225 Difference]: With dead ends: 1568 [2024-10-12 21:21:09,032 INFO L226 Difference]: Without dead ends: 1288 [2024-10-12 21:21:09,034 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 [2024-10-12 21:21:09,035 INFO L432 NwaCegarLoop]: 1532 mSDtfsCounter, 1470 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 1586 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 [2024-10-12 21:21:09,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 1586 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:21:09,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2024-10-12 21:21:09,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1286. [2024-10-12 21:21:09,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1284 states have (on average 1.705607476635514) internal successors, (2190), 1285 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:09,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 2190 transitions. [2024-10-12 21:21:09,075 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 2190 transitions. Word has length 36 [2024-10-12 21:21:09,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:09,076 INFO L471 AbstractCegarLoop]: Abstraction has 1286 states and 2190 transitions. [2024-10-12 21:21:09,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:09,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 2190 transitions. [2024-10-12 21:21:09,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-12 21:21:09,077 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:09,077 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] [2024-10-12 21:21:09,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 21:21:09,078 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:09,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:09,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1394266792, now seen corresponding path program 1 times [2024-10-12 21:21:09,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:09,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510345831] [2024-10-12 21:21:09,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:09,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:09,209 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 21:21:09,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:09,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510345831] [2024-10-12 21:21:09,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510345831] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:21:09,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:21:09,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 21:21:09,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893996866] [2024-10-12 21:21:09,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:21:09,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 21:21:09,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:09,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 21:21:09,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:21:09,212 INFO L87 Difference]: Start difference. First operand 1286 states and 2190 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:09,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:09,340 INFO L93 Difference]: Finished difference Result 2794 states and 4342 transitions. [2024-10-12 21:21:09,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 21:21:09,341 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-10-12 21:21:09,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:09,350 INFO L225 Difference]: With dead ends: 2794 [2024-10-12 21:21:09,350 INFO L226 Difference]: Without dead ends: 2424 [2024-10-12 21:21:09,351 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:21:09,352 INFO L432 NwaCegarLoop]: 1540 mSDtfsCounter, 3031 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3031 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:09,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3031 Valid, 3153 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 21:21:09,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2024-10-12 21:21:09,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 1726. [2024-10-12 21:21:09,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1724 states have (on average 1.6299303944315546) internal successors, (2810), 1725 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:09,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2810 transitions. [2024-10-12 21:21:09,411 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2810 transitions. Word has length 50 [2024-10-12 21:21:09,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:09,411 INFO L471 AbstractCegarLoop]: Abstraction has 1726 states and 2810 transitions. [2024-10-12 21:21:09,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:09,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2810 transitions. [2024-10-12 21:21:09,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-12 21:21:09,413 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:09,413 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] [2024-10-12 21:21:09,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 21:21:09,414 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:09,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:09,414 INFO L85 PathProgramCache]: Analyzing trace with hash 768610728, now seen corresponding path program 1 times [2024-10-12 21:21:09,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:09,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977737476] [2024-10-12 21:21:09,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:09,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:09,533 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 21:21:09,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:09,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977737476] [2024-10-12 21:21:09,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977737476] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:21:09,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:21:09,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 21:21:09,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821019389] [2024-10-12 21:21:09,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:21:09,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 21:21:09,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:09,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 21:21:09,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:21:09,536 INFO L87 Difference]: Start difference. First operand 1726 states and 2810 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) [2024-10-12 21:21:09,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:09,661 INFO L93 Difference]: Finished difference Result 3302 states and 5062 transitions. [2024-10-12 21:21:09,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 21:21:09,662 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 50 [2024-10-12 21:21:09,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:09,672 INFO L225 Difference]: With dead ends: 3302 [2024-10-12 21:21:09,672 INFO L226 Difference]: Without dead ends: 2792 [2024-10-12 21:21:09,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:21:09,675 INFO L432 NwaCegarLoop]: 1539 mSDtfsCounter, 3035 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3035 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:09,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3035 Valid, 3130 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:21:09,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2024-10-12 21:21:09,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2418. [2024-10-12 21:21:09,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 2416 states have (on average 1.5653973509933774) internal successors, (3782), 2417 states have internal predecessors, (3782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:09,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 3782 transitions. [2024-10-12 21:21:09,754 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 3782 transitions. Word has length 50 [2024-10-12 21:21:09,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:09,755 INFO L471 AbstractCegarLoop]: Abstraction has 2418 states and 3782 transitions. [2024-10-12 21:21:09,755 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) [2024-10-12 21:21:09,755 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 3782 transitions. [2024-10-12 21:21:09,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-12 21:21:09,756 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:09,756 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] [2024-10-12 21:21:09,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 21:21:09,757 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:09,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:09,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1657344168, now seen corresponding path program 1 times [2024-10-12 21:21:09,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:09,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119784238] [2024-10-12 21:21:09,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:09,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:09,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:09,860 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 21:21:09,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:09,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119784238] [2024-10-12 21:21:09,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119784238] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:21:09,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:21:09,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 21:21:09,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857510952] [2024-10-12 21:21:09,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:21:09,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 21:21:09,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:09,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 21:21:09,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:21:09,863 INFO L87 Difference]: Start difference. First operand 2418 states and 3782 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:09,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:09,979 INFO L93 Difference]: Finished difference Result 3810 states and 5778 transitions. [2024-10-12 21:21:09,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 21:21:09,980 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-10-12 21:21:09,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:09,991 INFO L225 Difference]: With dead ends: 3810 [2024-10-12 21:21:09,992 INFO L226 Difference]: Without dead ends: 3300 [2024-10-12 21:21:09,993 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:21:09,994 INFO L432 NwaCegarLoop]: 1538 mSDtfsCounter, 3041 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 3134 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:09,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 3134 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 21:21:09,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3300 states. [2024-10-12 21:21:10,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3300 to 2926. [2024-10-12 21:21:10,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2926 states, 2924 states have (on average 1.5383036935704515) internal successors, (4498), 2925 states have internal predecessors, (4498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:10,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2926 states to 2926 states and 4498 transitions. [2024-10-12 21:21:10,077 INFO L78 Accepts]: Start accepts. Automaton has 2926 states and 4498 transitions. Word has length 50 [2024-10-12 21:21:10,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:10,078 INFO L471 AbstractCegarLoop]: Abstraction has 2926 states and 4498 transitions. [2024-10-12 21:21:10,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:10,078 INFO L276 IsEmpty]: Start isEmpty. Operand 2926 states and 4498 transitions. [2024-10-12 21:21:10,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-12 21:21:10,079 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:10,079 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] [2024-10-12 21:21:10,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 21:21:10,079 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:10,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:10,080 INFO L85 PathProgramCache]: Analyzing trace with hash 711524920, now seen corresponding path program 1 times [2024-10-12 21:21:10,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:10,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342115310] [2024-10-12 21:21:10,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:10,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:10,152 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:10,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:10,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342115310] [2024-10-12 21:21:10,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342115310] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:21:10,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:21:10,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:21:10,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101881381] [2024-10-12 21:21:10,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:21:10,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:21:10,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:10,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:21:10,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:21:10,154 INFO L87 Difference]: Start difference. First operand 2926 states and 4498 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:10,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:10,211 INFO L93 Difference]: Finished difference Result 5078 states and 7536 transitions. [2024-10-12 21:21:10,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:21:10,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-10-12 21:21:10,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:10,222 INFO L225 Difference]: With dead ends: 5078 [2024-10-12 21:21:10,222 INFO L226 Difference]: Without dead ends: 2928 [2024-10-12 21:21:10,225 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 [2024-10-12 21:21:10,226 INFO L432 NwaCegarLoop]: 1520 mSDtfsCounter, 29 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3011 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:10,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3011 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:21:10,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2024-10-12 21:21:10,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 2926. [2024-10-12 21:21:10,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2926 states, 2924 states have (on average 1.5212038303693571) internal successors, (4448), 2925 states have internal predecessors, (4448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:10,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2926 states to 2926 states and 4448 transitions. [2024-10-12 21:21:10,377 INFO L78 Accepts]: Start accepts. Automaton has 2926 states and 4448 transitions. Word has length 51 [2024-10-12 21:21:10,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:10,377 INFO L471 AbstractCegarLoop]: Abstraction has 2926 states and 4448 transitions. [2024-10-12 21:21:10,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:10,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2926 states and 4448 transitions. [2024-10-12 21:21:10,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-12 21:21:10,379 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:10,379 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] [2024-10-12 21:21:10,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 21:21:10,379 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:10,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:10,379 INFO L85 PathProgramCache]: Analyzing trace with hash -220010704, now seen corresponding path program 1 times [2024-10-12 21:21:10,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:10,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474631067] [2024-10-12 21:21:10,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:10,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:10,466 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:10,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:10,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474631067] [2024-10-12 21:21:10,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474631067] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:21:10,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:21:10,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:21:10,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981726054] [2024-10-12 21:21:10,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:21:10,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:21:10,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:10,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:21:10,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:21:10,469 INFO L87 Difference]: Start difference. First operand 2926 states and 4448 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:10,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:10,507 INFO L93 Difference]: Finished difference Result 3772 states and 5635 transitions. [2024-10-12 21:21:10,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:21:10,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-10-12 21:21:10,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:10,513 INFO L225 Difference]: With dead ends: 3772 [2024-10-12 21:21:10,514 INFO L226 Difference]: Without dead ends: 1622 [2024-10-12 21:21:10,516 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 [2024-10-12 21:21:10,517 INFO L432 NwaCegarLoop]: 1518 mSDtfsCounter, 23 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3008 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:10,517 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3008 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:21:10,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2024-10-12 21:21:10,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1615. [2024-10-12 21:21:10,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1613 states have (on average 1.6261624302541848) internal successors, (2623), 1614 states have internal predecessors, (2623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:10,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 2623 transitions. [2024-10-12 21:21:10,550 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 2623 transitions. Word has length 52 [2024-10-12 21:21:10,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:10,550 INFO L471 AbstractCegarLoop]: Abstraction has 1615 states and 2623 transitions. [2024-10-12 21:21:10,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:10,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 2623 transitions. [2024-10-12 21:21:10,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-12 21:21:10,551 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:10,551 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] [2024-10-12 21:21:10,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 21:21:10,552 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:10,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:10,552 INFO L85 PathProgramCache]: Analyzing trace with hash 2127630598, now seen corresponding path program 1 times [2024-10-12 21:21:10,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:10,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581616240] [2024-10-12 21:21:10,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:10,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:10,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:10,618 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:10,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:10,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581616240] [2024-10-12 21:21:10,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581616240] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:21:10,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:21:10,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:21:10,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89036510] [2024-10-12 21:21:10,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:21:10,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:21:10,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:10,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:21:10,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:21:10,621 INFO L87 Difference]: Start difference. First operand 1615 states and 2623 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:10,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:10,650 INFO L93 Difference]: Finished difference Result 2033 states and 3201 transitions. [2024-10-12 21:21:10,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:21:10,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-10-12 21:21:10,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:10,655 INFO L225 Difference]: With dead ends: 2033 [2024-10-12 21:21:10,655 INFO L226 Difference]: Without dead ends: 1203 [2024-10-12 21:21:10,656 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 [2024-10-12 21:21:10,657 INFO L432 NwaCegarLoop]: 1512 mSDtfsCounter, 25 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2987 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:10,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2987 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:21:10,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2024-10-12 21:21:10,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1201. [2024-10-12 21:21:10,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1199 states have (on average 1.6997497914929107) internal successors, (2038), 1200 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:10,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 2038 transitions. [2024-10-12 21:21:10,681 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 2038 transitions. Word has length 53 [2024-10-12 21:21:10,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:10,681 INFO L471 AbstractCegarLoop]: Abstraction has 1201 states and 2038 transitions. [2024-10-12 21:21:10,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:10,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 2038 transitions. [2024-10-12 21:21:10,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-12 21:21:10,682 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:10,682 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 21:21:10,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 21:21:10,683 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:10,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:10,683 INFO L85 PathProgramCache]: Analyzing trace with hash -778516140, now seen corresponding path program 1 times [2024-10-12 21:21:10,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:10,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824919025] [2024-10-12 21:21:10,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:10,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:10,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:12,010 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:12,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:12,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824919025] [2024-10-12 21:21:12,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824919025] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:21:12,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016176433] [2024-10-12 21:21:12,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:12,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:21:12,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:21:12,014 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) [2024-10-12 21:21:12,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 21:21:12,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:12,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-12 21:21:12,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:21:12,579 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:12,580 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:21:13,327 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:13,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016176433] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:21:13,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:21:13,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-10-12 21:21:13,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347985532] [2024-10-12 21:21:13,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:21:13,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-12 21:21:13,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:13,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-12 21:21:13,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2024-10-12 21:21:13,330 INFO L87 Difference]: Start difference. First operand 1201 states and 2038 transitions. Second operand has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 27 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:15,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:15,881 INFO L93 Difference]: Finished difference Result 2689 states and 4060 transitions. [2024-10-12 21:21:15,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-10-12 21:21:15,882 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 27 states have internal predecessors, (142), 0 states have call successors, (0), 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 55 [2024-10-12 21:21:15,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:15,891 INFO L225 Difference]: With dead ends: 2689 [2024-10-12 21:21:15,895 INFO L226 Difference]: Without dead ends: 2273 [2024-10-12 21:21:15,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=813, Invalid=3093, Unknown=0, NotChecked=0, Total=3906 [2024-10-12 21:21:15,899 INFO L432 NwaCegarLoop]: 1477 mSDtfsCounter, 24395 mSDsluCounter, 6190 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24395 SdHoareTripleChecker+Valid, 7667 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:15,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24395 Valid, 7667 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 21:21:15,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2273 states. [2024-10-12 21:21:15,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2273 to 2220. [2024-10-12 21:21:15,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2220 states, 2218 states have (on average 1.5270513976555455) internal successors, (3387), 2219 states have internal predecessors, (3387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:15,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 3387 transitions. [2024-10-12 21:21:15,963 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 3387 transitions. Word has length 55 [2024-10-12 21:21:15,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:15,963 INFO L471 AbstractCegarLoop]: Abstraction has 2220 states and 3387 transitions. [2024-10-12 21:21:15,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.071428571428571) internal successors, (142), 27 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:15,963 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 3387 transitions. [2024-10-12 21:21:15,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-12 21:21:15,964 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:15,964 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 21:21:15,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 21:21:16,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-12 21:21:16,166 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:16,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:16,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1880919838, now seen corresponding path program 1 times [2024-10-12 21:21:16,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:16,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551318108] [2024-10-12 21:21:16,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:16,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:16,553 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:16,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:16,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551318108] [2024-10-12 21:21:16,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551318108] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:21:16,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077052325] [2024-10-12 21:21:16,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:16,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:21:16,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:21:16,556 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) [2024-10-12 21:21:16,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 21:21:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:16,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-12 21:21:16,665 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:21:17,001 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:17,001 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:21:17,856 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:17,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077052325] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:21:17,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:21:17,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-10-12 21:21:17,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602032531] [2024-10-12 21:21:17,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:21:17,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-12 21:21:17,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:17,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-12 21:21:17,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2024-10-12 21:21:17,860 INFO L87 Difference]: Start difference. First operand 2220 states and 3387 transitions. Second operand has 23 states, 23 states have (on average 5.260869565217392) internal successors, (121), 22 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:18,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:18,264 INFO L93 Difference]: Finished difference Result 4415 states and 6352 transitions. [2024-10-12 21:21:18,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 21:21:18,265 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.260869565217392) internal successors, (121), 22 states have internal predecessors, (121), 0 states have call successors, (0), 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 56 [2024-10-12 21:21:18,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:18,271 INFO L225 Difference]: With dead ends: 4415 [2024-10-12 21:21:18,271 INFO L226 Difference]: Without dead ends: 2980 [2024-10-12 21:21:18,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=238, Invalid=692, Unknown=0, NotChecked=0, Total=930 [2024-10-12 21:21:18,275 INFO L432 NwaCegarLoop]: 1481 mSDtfsCounter, 10443 mSDsluCounter, 4535 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10443 SdHoareTripleChecker+Valid, 6016 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:18,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10443 Valid, 6016 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 21:21:18,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2980 states. [2024-10-12 21:21:18,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2980 to 2976. [2024-10-12 21:21:18,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2976 states, 2974 states have (on average 1.4828513786146604) internal successors, (4410), 2975 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:18,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2976 states to 2976 states and 4410 transitions. [2024-10-12 21:21:18,350 INFO L78 Accepts]: Start accepts. Automaton has 2976 states and 4410 transitions. Word has length 56 [2024-10-12 21:21:18,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:18,351 INFO L471 AbstractCegarLoop]: Abstraction has 2976 states and 4410 transitions. [2024-10-12 21:21:18,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.260869565217392) internal successors, (121), 22 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:18,351 INFO L276 IsEmpty]: Start isEmpty. Operand 2976 states and 4410 transitions. [2024-10-12 21:21:18,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-12 21:21:18,352 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:18,352 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 21:21:18,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 21:21:18,552 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,SelfDestructingSolverStorable16 [2024-10-12 21:21:18,553 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:18,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:18,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1673533154, now seen corresponding path program 1 times [2024-10-12 21:21:18,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:18,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346608559] [2024-10-12 21:21:18,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:18,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:18,928 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:18,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:18,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346608559] [2024-10-12 21:21:18,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346608559] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:21:18,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782342658] [2024-10-12 21:21:18,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:18,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:21:18,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:21:18,931 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) [2024-10-12 21:21:18,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 21:21:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:19,031 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-12 21:21:19,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:21:19,386 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:19,386 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:21:19,847 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:19,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782342658] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:21:19,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:21:19,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2024-10-12 21:21:19,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494121569] [2024-10-12 21:21:19,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:21:19,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-12 21:21:19,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:19,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-12 21:21:19,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2024-10-12 21:21:19,849 INFO L87 Difference]: Start difference. First operand 2976 states and 4410 transitions. Second operand has 22 states, 22 states have (on average 5.7727272727272725) internal successors, (127), 21 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:20,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:20,305 INFO L93 Difference]: Finished difference Result 6712 states and 9437 transitions. [2024-10-12 21:21:20,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-12 21:21:20,306 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.7727272727272725) internal successors, (127), 21 states have internal predecessors, (127), 0 states have call successors, (0), 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 56 [2024-10-12 21:21:20,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:20,314 INFO L225 Difference]: With dead ends: 6712 [2024-10-12 21:21:20,315 INFO L226 Difference]: Without dead ends: 4534 [2024-10-12 21:21:20,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=268, Invalid=788, Unknown=0, NotChecked=0, Total=1056 [2024-10-12 21:21:20,319 INFO L432 NwaCegarLoop]: 1488 mSDtfsCounter, 19390 mSDsluCounter, 3099 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19390 SdHoareTripleChecker+Valid, 4587 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:20,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19390 Valid, 4587 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 21:21:20,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4534 states. [2024-10-12 21:21:20,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4534 to 4242. [2024-10-12 21:21:20,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4242 states, 4240 states have (on average 1.432311320754717) internal successors, (6073), 4241 states have internal predecessors, (6073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:20,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4242 states to 4242 states and 6073 transitions. [2024-10-12 21:21:20,433 INFO L78 Accepts]: Start accepts. Automaton has 4242 states and 6073 transitions. Word has length 56 [2024-10-12 21:21:20,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:20,433 INFO L471 AbstractCegarLoop]: Abstraction has 4242 states and 6073 transitions. [2024-10-12 21:21:20,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.7727272727272725) internal successors, (127), 21 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:20,434 INFO L276 IsEmpty]: Start isEmpty. Operand 4242 states and 6073 transitions. [2024-10-12 21:21:20,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-12 21:21:20,435 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:20,435 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 21:21:20,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 21:21:20,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-12 21:21:20,636 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:20,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:20,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1226562386, now seen corresponding path program 1 times [2024-10-12 21:21:20,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:20,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251863013] [2024-10-12 21:21:20,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:20,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:21,323 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:21,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:21,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251863013] [2024-10-12 21:21:21,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251863013] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:21:21,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838664976] [2024-10-12 21:21:21,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:21,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:21:21,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:21:21,326 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) [2024-10-12 21:21:21,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 21:21:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:21,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-12 21:21:21,423 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:21:22,136 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:22,136 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:21:22,809 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:22,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838664976] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:21:22,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:21:22,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 30 [2024-10-12 21:21:22,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109986716] [2024-10-12 21:21:22,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:21:22,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-12 21:21:22,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:22,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-12 21:21:22,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2024-10-12 21:21:22,811 INFO L87 Difference]: Start difference. First operand 4242 states and 6073 transitions. Second operand has 30 states, 30 states have (on average 4.133333333333334) internal successors, (124), 30 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:23,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:23,809 INFO L93 Difference]: Finished difference Result 7033 states and 9776 transitions. [2024-10-12 21:21:23,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-12 21:21:23,810 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.133333333333334) internal successors, (124), 30 states have internal predecessors, (124), 0 states have call successors, (0), 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 57 [2024-10-12 21:21:23,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:23,820 INFO L225 Difference]: With dead ends: 7033 [2024-10-12 21:21:23,820 INFO L226 Difference]: Without dead ends: 5663 [2024-10-12 21:21:23,823 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=457, Invalid=1705, Unknown=0, NotChecked=0, Total=2162 [2024-10-12 21:21:23,824 INFO L432 NwaCegarLoop]: 1491 mSDtfsCounter, 12537 mSDsluCounter, 16375 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12537 SdHoareTripleChecker+Valid, 17866 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:23,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12537 Valid, 17866 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 21:21:23,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5663 states. [2024-10-12 21:21:23,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5663 to 4259. [2024-10-12 21:21:23,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4259 states, 4257 states have (on average 1.4272962179938924) internal successors, (6076), 4258 states have internal predecessors, (6076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:23,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4259 states to 4259 states and 6076 transitions. [2024-10-12 21:21:23,946 INFO L78 Accepts]: Start accepts. Automaton has 4259 states and 6076 transitions. Word has length 57 [2024-10-12 21:21:23,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:23,946 INFO L471 AbstractCegarLoop]: Abstraction has 4259 states and 6076 transitions. [2024-10-12 21:21:23,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.133333333333334) internal successors, (124), 30 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:23,947 INFO L276 IsEmpty]: Start isEmpty. Operand 4259 states and 6076 transitions. [2024-10-12 21:21:23,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-12 21:21:23,947 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:23,947 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 21:21:23,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 21:21:24,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:21:24,188 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:24,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:24,190 INFO L85 PathProgramCache]: Analyzing trace with hash 754331894, now seen corresponding path program 1 times [2024-10-12 21:21:24,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:24,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986858738] [2024-10-12 21:21:24,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:24,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:24,908 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:24,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:24,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986858738] [2024-10-12 21:21:24,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986858738] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:21:24,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324973772] [2024-10-12 21:21:24,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:24,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:21:24,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:21:24,911 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) [2024-10-12 21:21:24,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 21:21:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:25,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-10-12 21:21:25,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:21:26,374 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:26,374 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:21:28,465 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:28,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324973772] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:21:28,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:21:28,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17, 16] total 38 [2024-10-12 21:21:28,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733540627] [2024-10-12 21:21:28,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:21:28,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-10-12 21:21:28,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:28,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-10-12 21:21:28,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1236, Unknown=0, NotChecked=0, Total=1406 [2024-10-12 21:21:28,467 INFO L87 Difference]: Start difference. First operand 4259 states and 6076 transitions. Second operand has 38 states, 38 states have (on average 4.0) internal successors, (152), 38 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:30,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:30,968 INFO L93 Difference]: Finished difference Result 6201 states and 8656 transitions. [2024-10-12 21:21:30,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-12 21:21:30,968 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.0) internal successors, (152), 38 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-10-12 21:21:30,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:30,975 INFO L225 Difference]: With dead ends: 6201 [2024-10-12 21:21:30,975 INFO L226 Difference]: Without dead ends: 3627 [2024-10-12 21:21:30,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1017 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=985, Invalid=3845, Unknown=0, NotChecked=0, Total=4830 [2024-10-12 21:21:30,980 INFO L432 NwaCegarLoop]: 1475 mSDtfsCounter, 22285 mSDsluCounter, 20792 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22285 SdHoareTripleChecker+Valid, 22267 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:30,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22285 Valid, 22267 Invalid, 1041 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [40 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 21:21:30,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3627 states. [2024-10-12 21:21:31,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3627 to 3317. [2024-10-12 21:21:31,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3317 states, 3315 states have (on average 1.4606334841628958) internal successors, (4842), 3316 states have internal predecessors, (4842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:31,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3317 states to 3317 states and 4842 transitions. [2024-10-12 21:21:31,073 INFO L78 Accepts]: Start accepts. Automaton has 3317 states and 4842 transitions. Word has length 57 [2024-10-12 21:21:31,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:31,073 INFO L471 AbstractCegarLoop]: Abstraction has 3317 states and 4842 transitions. [2024-10-12 21:21:31,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.0) internal successors, (152), 38 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:31,074 INFO L276 IsEmpty]: Start isEmpty. Operand 3317 states and 4842 transitions. [2024-10-12 21:21:31,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 21:21:31,074 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:31,074 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 21:21:31,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 21:21:31,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:21:31,279 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:31,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:31,279 INFO L85 PathProgramCache]: Analyzing trace with hash 35128148, now seen corresponding path program 1 times [2024-10-12 21:21:31,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:31,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048297482] [2024-10-12 21:21:31,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:31,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:31,408 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 21:21:31,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:31,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048297482] [2024-10-12 21:21:31,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048297482] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:21:31,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423349388] [2024-10-12 21:21:31,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:31,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:21:31,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:21:31,411 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) [2024-10-12 21:21:31,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 21:21:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:31,508 INFO L255 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 21:21:31,510 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:21:31,588 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 21:21:31,588 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:21:31,766 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 21:21:31,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423349388] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:21:31,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:21:31,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2024-10-12 21:21:31,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182750516] [2024-10-12 21:21:31,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:21:31,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 21:21:31,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:31,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 21:21:31,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-10-12 21:21:31,768 INFO L87 Difference]: Start difference. First operand 3317 states and 4842 transitions. Second operand has 9 states, 9 states have (on average 17.444444444444443) internal successors, (157), 9 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:31,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:31,950 INFO L93 Difference]: Finished difference Result 7145 states and 9796 transitions. [2024-10-12 21:21:31,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 21:21:31,950 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.444444444444443) internal successors, (157), 9 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-10-12 21:21:31,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:31,957 INFO L225 Difference]: With dead ends: 7145 [2024-10-12 21:21:31,957 INFO L226 Difference]: Without dead ends: 4633 [2024-10-12 21:21:31,960 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-10-12 21:21:31,961 INFO L432 NwaCegarLoop]: 1510 mSDtfsCounter, 1496 mSDsluCounter, 3154 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 4664 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:31,962 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 4664 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:21:31,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4633 states. [2024-10-12 21:21:32,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4633 to 4393. [2024-10-12 21:21:32,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4393 states, 4391 states have (on average 1.3750854019585517) internal successors, (6038), 4392 states have internal predecessors, (6038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:32,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4393 states to 4393 states and 6038 transitions. [2024-10-12 21:21:32,100 INFO L78 Accepts]: Start accepts. Automaton has 4393 states and 6038 transitions. Word has length 58 [2024-10-12 21:21:32,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:32,100 INFO L471 AbstractCegarLoop]: Abstraction has 4393 states and 6038 transitions. [2024-10-12 21:21:32,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.444444444444443) internal successors, (157), 9 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:32,101 INFO L276 IsEmpty]: Start isEmpty. Operand 4393 states and 6038 transitions. [2024-10-12 21:21:32,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-12 21:21:32,101 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:32,102 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, 1, 1, 1, 1, 1] [2024-10-12 21:21:32,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-12 21:21:32,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:21:32,303 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:32,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:32,304 INFO L85 PathProgramCache]: Analyzing trace with hash -2096123822, now seen corresponding path program 1 times [2024-10-12 21:21:32,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:32,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226514851] [2024-10-12 21:21:32,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:32,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:32,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:32,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:32,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:32,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226514851] [2024-10-12 21:21:32,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226514851] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:21:32,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:21:32,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:21:32,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842891428] [2024-10-12 21:21:32,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:21:32,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 21:21:32,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:32,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 21:21:32,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 21:21:32,409 INFO L87 Difference]: Start difference. First operand 4393 states and 6038 transitions. Second operand has 4 states, 4 states have (on average 16.5) 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) [2024-10-12 21:21:37,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:21:37,346 INFO L93 Difference]: Finished difference Result 6648 states and 10347 transitions. [2024-10-12 21:21:37,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 21:21:37,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) 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 [2024-10-12 21:21:37,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:21:37,356 INFO L225 Difference]: With dead ends: 6648 [2024-10-12 21:21:37,356 INFO L226 Difference]: Without dead ends: 5895 [2024-10-12 21:21:37,359 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 [2024-10-12 21:21:37,359 INFO L432 NwaCegarLoop]: 738 mSDtfsCounter, 2312 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5357 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2312 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 6510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-10-12 21:21:37,360 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2312 Valid, 756 Invalid, 6510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5357 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-10-12 21:21:37,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5895 states. [2024-10-12 21:21:37,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5895 to 5895. [2024-10-12 21:21:37,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5895 states, 5893 states have (on average 1.3833361615475988) internal successors, (8152), 5894 states have internal predecessors, (8152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:21:37,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5895 states to 5895 states and 8152 transitions. [2024-10-12 21:21:37,594 INFO L78 Accepts]: Start accepts. Automaton has 5895 states and 8152 transitions. Word has length 66 [2024-10-12 21:21:37,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:21:37,594 INFO L471 AbstractCegarLoop]: Abstraction has 5895 states and 8152 transitions. [2024-10-12 21:21:37,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) 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) [2024-10-12 21:21:37,595 INFO L276 IsEmpty]: Start isEmpty. Operand 5895 states and 8152 transitions. [2024-10-12 21:21:37,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-12 21:21:37,597 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:21:37,597 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-10-12 21:21:37,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-12 21:21:37,597 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:21:37,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:21:37,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1595721674, now seen corresponding path program 1 times [2024-10-12 21:21:37,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:21:37,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221223910] [2024-10-12 21:21:37,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:37,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:21:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:38,297 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:38,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:21:38,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221223910] [2024-10-12 21:21:38,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221223910] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:21:38,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839468257] [2024-10-12 21:21:38,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:21:38,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:21:38,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:21:38,299 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:21:38,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 21:21:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:21:38,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-10-12 21:21:38,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:21:40,882 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 52 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-12 21:21:40,883 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:21:44,200 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 19 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:21:44,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839468257] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:21:44,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:21:44,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 22, 24] total 57 [2024-10-12 21:21:44,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988660752] [2024-10-12 21:21:44,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:21:44,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-10-12 21:21:44,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:21:44,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-10-12 21:21:44,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=400, Invalid=2792, Unknown=0, NotChecked=0, Total=3192 [2024-10-12 21:21:44,204 INFO L87 Difference]: Start difference. First operand 5895 states and 8152 transitions. Second operand has 57 states, 57 states have (on average 4.157894736842105) internal successors, (237), 57 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)