./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.6.1.ufo.BOUNDED-12.pals.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/seq-mthreaded/pals_lcr.6.1.ufo.BOUNDED-12.pals.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 b4e7977192ae56aeb09dc050b873d7b40c1e47d710f31b358c00a46d3bffe743 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 20:05:16,002 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 20:05:16,094 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 20:05:16,099 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 20:05:16,100 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 20:05:16,132 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 20:05:16,133 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 20:05:16,134 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 20:05:16,135 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 20:05:16,136 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 20:05:16,136 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 20:05:16,136 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 20:05:16,137 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 20:05:16,137 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 20:05:16,139 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 20:05:16,139 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 20:05:16,140 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 20:05:16,140 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 20:05:16,140 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 20:05:16,140 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 20:05:16,141 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 20:05:16,141 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 20:05:16,145 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 20:05:16,145 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 20:05:16,145 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 20:05:16,145 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 20:05:16,146 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 20:05:16,146 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 20:05:16,146 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 20:05:16,146 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 20:05:16,146 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 20:05:16,147 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 20:05:16,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 20:05:16,147 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 20:05:16,147 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 20:05:16,147 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 20:05:16,148 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 20:05:16,148 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 20:05:16,148 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 20:05:16,148 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 20:05:16,149 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 20:05:16,149 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 20:05:16,149 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4e7977192ae56aeb09dc050b873d7b40c1e47d710f31b358c00a46d3bffe743 [2024-10-12 20:05:16,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 20:05:16,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 20:05:16,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 20:05:16,412 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 20:05:16,412 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 20:05:16,413 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.6.1.ufo.BOUNDED-12.pals.c [2024-10-12 20:05:17,794 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 20:05:18,012 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 20:05:18,013 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.6.1.ufo.BOUNDED-12.pals.c [2024-10-12 20:05:18,023 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6bbca5de/21d66cc5648c4b47a02bb2c61bf44def/FLAG342f124db [2024-10-12 20:05:18,036 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6bbca5de/21d66cc5648c4b47a02bb2c61bf44def [2024-10-12 20:05:18,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 20:05:18,040 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 20:05:18,041 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 20:05:18,041 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 20:05:18,046 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 20:05:18,047 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:05:18" (1/1) ... [2024-10-12 20:05:18,047 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cfcb87d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:05:18, skipping insertion in model container [2024-10-12 20:05:18,048 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:05:18" (1/1) ... [2024-10-12 20:05:18,079 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 20:05:18,358 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/seq-mthreaded/pals_lcr.6.1.ufo.BOUNDED-12.pals.c[15112,15125] [2024-10-12 20:05:18,363 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 20:05:18,375 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 20:05:18,425 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/seq-mthreaded/pals_lcr.6.1.ufo.BOUNDED-12.pals.c[15112,15125] [2024-10-12 20:05:18,426 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 20:05:18,445 INFO L204 MainTranslator]: Completed translation [2024-10-12 20:05:18,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:05:18 WrapperNode [2024-10-12 20:05:18,446 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 20:05:18,447 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 20:05:18,447 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 20:05:18,447 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 20:05:18,454 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:05:18" (1/1) ... [2024-10-12 20:05:18,465 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:05:18" (1/1) ... [2024-10-12 20:05:18,501 INFO L138 Inliner]: procedures = 25, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 399 [2024-10-12 20:05:18,501 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 20:05:18,502 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 20:05:18,502 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 20:05:18,502 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 20:05:18,518 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:05:18" (1/1) ... [2024-10-12 20:05:18,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:05:18" (1/1) ... [2024-10-12 20:05:18,521 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:05:18" (1/1) ... [2024-10-12 20:05:18,553 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 20:05:18,553 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:05:18" (1/1) ... [2024-10-12 20:05:18,553 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:05:18" (1/1) ... [2024-10-12 20:05:18,561 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:05:18" (1/1) ... [2024-10-12 20:05:18,567 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:05:18" (1/1) ... [2024-10-12 20:05:18,570 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:05:18" (1/1) ... [2024-10-12 20:05:18,572 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:05:18" (1/1) ... [2024-10-12 20:05:18,579 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 20:05:18,580 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 20:05:18,580 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 20:05:18,581 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 20:05:18,581 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:05:18" (1/1) ... [2024-10-12 20:05:18,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 20:05:18,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 20:05:18,614 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 20:05:18,620 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 20:05:18,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 20:05:18,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 20:05:18,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 20:05:18,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 20:05:18,797 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 20:05:18,801 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 20:05:19,325 INFO L? ?]: Removed 45 outVars from TransFormulas that were not future-live. [2024-10-12 20:05:19,325 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 20:05:19,375 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 20:05:19,379 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 20:05:19,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:05:19 BoogieIcfgContainer [2024-10-12 20:05:19,379 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 20:05:19,382 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 20:05:19,382 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 20:05:19,385 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 20:05:19,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:05:18" (1/3) ... [2024-10-12 20:05:19,387 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@738e5573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:05:19, skipping insertion in model container [2024-10-12 20:05:19,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:05:18" (2/3) ... [2024-10-12 20:05:19,388 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@738e5573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:05:19, skipping insertion in model container [2024-10-12 20:05:19,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:05:19" (3/3) ... [2024-10-12 20:05:19,390 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.BOUNDED-12.pals.c [2024-10-12 20:05:19,406 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 20:05:19,406 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 20:05:19,465 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 20:05:19,472 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;@1ad46c46, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 20:05:19,472 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 20:05:19,476 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 91 states have (on average 1.8131868131868132) internal successors, (165), 92 states have internal predecessors, (165), 0 states have call successors, (0), 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 20:05:19,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-12 20:05:19,485 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:05:19,487 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:05:19,488 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:05:19,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:05:19,492 INFO L85 PathProgramCache]: Analyzing trace with hash -644629225, now seen corresponding path program 1 times [2024-10-12 20:05:19,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:05:19,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249724295] [2024-10-12 20:05:19,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:05:19,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:05:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:05:19,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:05:19,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:05:19,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249724295] [2024-10-12 20:05:19,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249724295] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:05:19,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:05:19,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 20:05:19,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248286343] [2024-10-12 20:05:19,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:05:19,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 20:05:19,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:05:19,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 20:05:19,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 20:05:19,794 INFO L87 Difference]: Start difference. First operand has 93 states, 91 states have (on average 1.8131868131868132) internal successors, (165), 92 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:05:19,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:05:19,824 INFO L93 Difference]: Finished difference Result 143 states and 246 transitions. [2024-10-12 20:05:19,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 20:05:19,828 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-10-12 20:05:19,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:05:19,838 INFO L225 Difference]: With dead ends: 143 [2024-10-12 20:05:19,839 INFO L226 Difference]: Without dead ends: 91 [2024-10-12 20:05:19,842 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 20:05:19,846 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:05:19,847 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 158 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:05:19,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-10-12 20:05:19,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-10-12 20:05:19,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.7777777777777777) internal successors, (160), 90 states have internal predecessors, (160), 0 states have call successors, (0), 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 20:05:19,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 160 transitions. [2024-10-12 20:05:19,881 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 160 transitions. Word has length 22 [2024-10-12 20:05:19,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:05:19,882 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 160 transitions. [2024-10-12 20:05:19,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:05:19,882 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 160 transitions. [2024-10-12 20:05:19,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-12 20:05:19,884 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:05:19,884 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:05:19,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 20:05:19,885 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:05:19,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:05:19,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1961394329, now seen corresponding path program 1 times [2024-10-12 20:05:19,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:05:19,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562628155] [2024-10-12 20:05:19,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:05:19,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:05:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:05:20,139 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 20:05:20,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:05:20,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562628155] [2024-10-12 20:05:20,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562628155] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:05:20,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:05:20,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 20:05:20,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251976091] [2024-10-12 20:05:20,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:05:20,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 20:05:20,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:05:20,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 20:05:20,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 20:05:20,144 INFO L87 Difference]: Start difference. First operand 91 states and 160 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:05:20,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:05:20,240 INFO L93 Difference]: Finished difference Result 141 states and 239 transitions. [2024-10-12 20:05:20,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 20:05:20,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-10-12 20:05:20,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:05:20,244 INFO L225 Difference]: With dead ends: 141 [2024-10-12 20:05:20,245 INFO L226 Difference]: Without dead ends: 91 [2024-10-12 20:05:20,245 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 20:05:20,246 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 0 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:05:20,246 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 428 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:05:20,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-10-12 20:05:20,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-10-12 20:05:20,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.3333333333333333) internal successors, (120), 90 states have internal predecessors, (120), 0 states have call successors, (0), 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 20:05:20,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 120 transitions. [2024-10-12 20:05:20,255 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 120 transitions. Word has length 22 [2024-10-12 20:05:20,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:05:20,256 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 120 transitions. [2024-10-12 20:05:20,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:05:20,256 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 120 transitions. [2024-10-12 20:05:20,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-12 20:05:20,257 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:05:20,258 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:05:20,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 20:05:20,258 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:05:20,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:05:20,259 INFO L85 PathProgramCache]: Analyzing trace with hash 551736366, now seen corresponding path program 1 times [2024-10-12 20:05:20,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:05:20,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715882413] [2024-10-12 20:05:20,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:05:20,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:05:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:05:20,587 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 20:05:20,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:05:20,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715882413] [2024-10-12 20:05:20,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715882413] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:05:20,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:05:20,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 20:05:20,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544238450] [2024-10-12 20:05:20,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:05:20,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 20:05:20,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:05:20,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 20:05:20,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-12 20:05:20,593 INFO L87 Difference]: Start difference. First operand 91 states and 120 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:05:21,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:05:21,019 INFO L93 Difference]: Finished difference Result 655 states and 1032 transitions. [2024-10-12 20:05:21,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-12 20:05:21,020 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-10-12 20:05:21,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:05:21,027 INFO L225 Difference]: With dead ends: 655 [2024-10-12 20:05:21,027 INFO L226 Difference]: Without dead ends: 608 [2024-10-12 20:05:21,028 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2024-10-12 20:05:21,029 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 1047 mSDsluCounter, 2072 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 2185 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 20:05:21,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1047 Valid, 2185 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 20:05:21,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2024-10-12 20:05:21,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 136. [2024-10-12 20:05:21,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.4296296296296296) internal successors, (193), 135 states have internal predecessors, (193), 0 states have call successors, (0), 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 20:05:21,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 193 transitions. [2024-10-12 20:05:21,054 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 193 transitions. Word has length 61 [2024-10-12 20:05:21,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:05:21,054 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 193 transitions. [2024-10-12 20:05:21,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:05:21,055 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 193 transitions. [2024-10-12 20:05:21,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-12 20:05:21,057 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:05:21,057 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] [2024-10-12 20:05:21,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 20:05:21,057 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:05:21,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:05:21,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1177047518, now seen corresponding path program 1 times [2024-10-12 20:05:21,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:05:21,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831379676] [2024-10-12 20:05:21,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:05:21,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:05:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:05:21,174 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 20:05:21,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:05:21,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831379676] [2024-10-12 20:05:21,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831379676] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:05:21,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:05:21,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:05:21,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780663006] [2024-10-12 20:05:21,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:05:21,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:05:21,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:05:21,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:05:21,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:05:21,178 INFO L87 Difference]: Start difference. First operand 136 states and 193 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 20:05:21,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:05:21,202 INFO L93 Difference]: Finished difference Result 309 states and 472 transitions. [2024-10-12 20:05:21,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:05:21,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2024-10-12 20:05:21,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:05:21,204 INFO L225 Difference]: With dead ends: 309 [2024-10-12 20:05:21,204 INFO L226 Difference]: Without dead ends: 217 [2024-10-12 20:05:21,205 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 20:05:21,206 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 50 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:05:21,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 185 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:05:21,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-10-12 20:05:21,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2024-10-12 20:05:21,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.4906542056074767) internal successors, (319), 214 states have internal predecessors, (319), 0 states have call successors, (0), 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 20:05:21,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 319 transitions. [2024-10-12 20:05:21,221 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 319 transitions. Word has length 63 [2024-10-12 20:05:21,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:05:21,222 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 319 transitions. [2024-10-12 20:05:21,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 20:05:21,222 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 319 transitions. [2024-10-12 20:05:21,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-12 20:05:21,224 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:05:21,224 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] [2024-10-12 20:05:21,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 20:05:21,225 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:05:21,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:05:21,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1179192470, now seen corresponding path program 1 times [2024-10-12 20:05:21,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:05:21,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442310285] [2024-10-12 20:05:21,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:05:21,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:05:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:05:21,736 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 20:05:21,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:05:21,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442310285] [2024-10-12 20:05:21,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442310285] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:05:21,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:05:21,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 20:05:21,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436645172] [2024-10-12 20:05:21,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:05:21,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 20:05:21,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:05:21,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 20:05:21,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-12 20:05:21,743 INFO L87 Difference]: Start difference. First operand 215 states and 319 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 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 20:05:22,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:05:22,015 INFO L93 Difference]: Finished difference Result 388 states and 595 transitions. [2024-10-12 20:05:22,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 20:05:22,016 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2024-10-12 20:05:22,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:05:22,018 INFO L225 Difference]: With dead ends: 388 [2024-10-12 20:05:22,018 INFO L226 Difference]: Without dead ends: 217 [2024-10-12 20:05:22,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-10-12 20:05:22,021 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 196 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:05:22,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 470 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:05:22,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-10-12 20:05:22,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2024-10-12 20:05:22,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.4813084112149533) internal successors, (317), 214 states have internal predecessors, (317), 0 states have call successors, (0), 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 20:05:22,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 317 transitions. [2024-10-12 20:05:22,042 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 317 transitions. Word has length 63 [2024-10-12 20:05:22,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:05:22,043 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 317 transitions. [2024-10-12 20:05:22,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 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 20:05:22,043 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 317 transitions. [2024-10-12 20:05:22,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-12 20:05:22,045 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:05:22,045 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] [2024-10-12 20:05:22,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 20:05:22,045 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:05:22,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:05:22,046 INFO L85 PathProgramCache]: Analyzing trace with hash -2113811586, now seen corresponding path program 1 times [2024-10-12 20:05:22,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:05:22,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340809399] [2024-10-12 20:05:22,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:05:22,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:05:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:05:22,243 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 20:05:22,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:05:22,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340809399] [2024-10-12 20:05:22,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340809399] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:05:22,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:05:22,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 20:05:22,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102499914] [2024-10-12 20:05:22,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:05:22,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 20:05:22,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:05:22,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 20:05:22,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 20:05:22,245 INFO L87 Difference]: Start difference. First operand 215 states and 317 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:05:22,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:05:22,274 INFO L93 Difference]: Finished difference Result 221 states and 324 transitions. [2024-10-12 20:05:22,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 20:05:22,274 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-10-12 20:05:22,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:05:22,276 INFO L225 Difference]: With dead ends: 221 [2024-10-12 20:05:22,278 INFO L226 Difference]: Without dead ends: 219 [2024-10-12 20:05:22,279 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 20:05:22,280 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 0 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 340 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 20:05:22,280 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 340 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:05:22,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-10-12 20:05:22,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2024-10-12 20:05:22,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.4678899082568808) internal successors, (320), 218 states have internal predecessors, (320), 0 states have call successors, (0), 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 20:05:22,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 320 transitions. [2024-10-12 20:05:22,293 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 320 transitions. Word has length 64 [2024-10-12 20:05:22,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:05:22,293 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 320 transitions. [2024-10-12 20:05:22,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:05:22,293 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 320 transitions. [2024-10-12 20:05:22,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-12 20:05:22,295 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:05:22,295 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] [2024-10-12 20:05:22,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 20:05:22,296 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:05:22,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:05:22,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1651742026, now seen corresponding path program 1 times [2024-10-12 20:05:22,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:05:22,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830824920] [2024-10-12 20:05:22,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:05:22,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:05:22,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:05:22,373 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 20:05:22,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:05:22,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830824920] [2024-10-12 20:05:22,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830824920] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:05:22,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:05:22,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:05:22,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617338986] [2024-10-12 20:05:22,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:05:22,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:05:22,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:05:22,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:05:22,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:05:22,377 INFO L87 Difference]: Start difference. First operand 219 states and 320 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:05:22,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:05:22,396 INFO L93 Difference]: Finished difference Result 405 states and 613 transitions. [2024-10-12 20:05:22,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:05:22,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-10-12 20:05:22,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:05:22,398 INFO L225 Difference]: With dead ends: 405 [2024-10-12 20:05:22,398 INFO L226 Difference]: Without dead ends: 309 [2024-10-12 20:05:22,398 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 20:05:22,399 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 66 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:05:22,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 253 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:05:22,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-10-12 20:05:22,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 307. [2024-10-12 20:05:22,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 1.4934640522875817) internal successors, (457), 306 states have internal predecessors, (457), 0 states have call successors, (0), 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 20:05:22,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 457 transitions. [2024-10-12 20:05:22,413 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 457 transitions. Word has length 65 [2024-10-12 20:05:22,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:05:22,414 INFO L471 AbstractCegarLoop]: Abstraction has 307 states and 457 transitions. [2024-10-12 20:05:22,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:05:22,414 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 457 transitions. [2024-10-12 20:05:22,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-12 20:05:22,416 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:05:22,416 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] [2024-10-12 20:05:22,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 20:05:22,416 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:05:22,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:05:22,417 INFO L85 PathProgramCache]: Analyzing trace with hash -2062128714, now seen corresponding path program 1 times [2024-10-12 20:05:22,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:05:22,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083786086] [2024-10-12 20:05:22,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:05:22,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:05:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:05:22,477 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 20:05:22,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:05:22,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083786086] [2024-10-12 20:05:22,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083786086] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:05:22,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:05:22,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:05:22,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508049836] [2024-10-12 20:05:22,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:05:22,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:05:22,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:05:22,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:05:22,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:05:22,481 INFO L87 Difference]: Start difference. First operand 307 states and 457 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:05:22,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:05:22,505 INFO L93 Difference]: Finished difference Result 805 states and 1237 transitions. [2024-10-12 20:05:22,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:05:22,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-10-12 20:05:22,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:05:22,508 INFO L225 Difference]: With dead ends: 805 [2024-10-12 20:05:22,508 INFO L226 Difference]: Without dead ends: 544 [2024-10-12 20:05:22,509 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 20:05:22,511 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 64 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:05:22,512 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 259 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:05:22,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2024-10-12 20:05:22,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 542. [2024-10-12 20:05:22,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 541 states have (on average 1.5138632162661738) internal successors, (819), 541 states have internal predecessors, (819), 0 states have call successors, (0), 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 20:05:22,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 819 transitions. [2024-10-12 20:05:22,533 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 819 transitions. Word has length 65 [2024-10-12 20:05:22,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:05:22,534 INFO L471 AbstractCegarLoop]: Abstraction has 542 states and 819 transitions. [2024-10-12 20:05:22,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:05:22,534 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 819 transitions. [2024-10-12 20:05:22,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-12 20:05:22,535 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:05:22,535 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] [2024-10-12 20:05:22,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 20:05:22,536 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:05:22,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:05:22,537 INFO L85 PathProgramCache]: Analyzing trace with hash 2004199350, now seen corresponding path program 1 times [2024-10-12 20:05:22,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:05:22,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073828768] [2024-10-12 20:05:22,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:05:22,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:05:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:05:22,630 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 20:05:22,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:05:22,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073828768] [2024-10-12 20:05:22,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073828768] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:05:22,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:05:22,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:05:22,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565384594] [2024-10-12 20:05:22,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:05:22,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:05:22,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:05:22,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:05:22,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:05:22,632 INFO L87 Difference]: Start difference. First operand 542 states and 819 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:05:22,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:05:22,669 INFO L93 Difference]: Finished difference Result 1486 states and 2281 transitions. [2024-10-12 20:05:22,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:05:22,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-10-12 20:05:22,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:05:22,674 INFO L225 Difference]: With dead ends: 1486 [2024-10-12 20:05:22,674 INFO L226 Difference]: Without dead ends: 990 [2024-10-12 20:05:22,674 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 20:05:22,675 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 60 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:05:22,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 255 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:05:22,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2024-10-12 20:05:22,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 988. [2024-10-12 20:05:22,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 987 states have (on average 1.5146909827760893) internal successors, (1495), 987 states have internal predecessors, (1495), 0 states have call successors, (0), 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 20:05:22,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1495 transitions. [2024-10-12 20:05:22,707 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1495 transitions. Word has length 65 [2024-10-12 20:05:22,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:05:22,708 INFO L471 AbstractCegarLoop]: Abstraction has 988 states and 1495 transitions. [2024-10-12 20:05:22,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:05:22,708 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1495 transitions. [2024-10-12 20:05:22,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-12 20:05:22,712 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:05:22,712 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] [2024-10-12 20:05:22,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 20:05:22,713 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:05:22,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:05:22,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1378543286, now seen corresponding path program 1 times [2024-10-12 20:05:22,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:05:22,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086651774] [2024-10-12 20:05:22,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:05:22,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:05:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:05:22,780 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 20:05:22,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:05:22,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086651774] [2024-10-12 20:05:22,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086651774] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:05:22,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:05:22,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:05:22,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006895506] [2024-10-12 20:05:22,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:05:22,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:05:22,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:05:22,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:05:22,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:05:22,783 INFO L87 Difference]: Start difference. First operand 988 states and 1495 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:05:22,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:05:22,830 INFO L93 Difference]: Finished difference Result 2776 states and 4225 transitions. [2024-10-12 20:05:22,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:05:22,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-10-12 20:05:22,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:05:22,838 INFO L225 Difference]: With dead ends: 2776 [2024-10-12 20:05:22,839 INFO L226 Difference]: Without dead ends: 1834 [2024-10-12 20:05:22,840 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 20:05:22,841 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 58 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:05:22,842 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 257 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:05:22,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1834 states. [2024-10-12 20:05:22,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1834 to 1832. [2024-10-12 20:05:22,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1832 states, 1831 states have (on average 1.5024576734025124) internal successors, (2751), 1831 states have internal predecessors, (2751), 0 states have call successors, (0), 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 20:05:22,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1832 states to 1832 states and 2751 transitions. [2024-10-12 20:05:22,896 INFO L78 Accepts]: Start accepts. Automaton has 1832 states and 2751 transitions. Word has length 65 [2024-10-12 20:05:22,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:05:22,896 INFO L471 AbstractCegarLoop]: Abstraction has 1832 states and 2751 transitions. [2024-10-12 20:05:22,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:05:22,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1832 states and 2751 transitions. [2024-10-12 20:05:22,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-12 20:05:22,898 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:05:22,898 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] [2024-10-12 20:05:22,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 20:05:22,898 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:05:22,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:05:22,899 INFO L85 PathProgramCache]: Analyzing trace with hash -2027690570, now seen corresponding path program 1 times [2024-10-12 20:05:22,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:05:22,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83385768] [2024-10-12 20:05:22,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:05:22,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:05:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:05:22,952 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 20:05:22,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:05:22,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83385768] [2024-10-12 20:05:22,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83385768] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:05:22,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:05:22,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:05:22,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340504767] [2024-10-12 20:05:22,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:05:22,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:05:22,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:05:22,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:05:22,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:05:22,954 INFO L87 Difference]: Start difference. First operand 1832 states and 2751 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:05:23,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:05:23,054 INFO L93 Difference]: Finished difference Result 5212 states and 7825 transitions. [2024-10-12 20:05:23,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:05:23,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-10-12 20:05:23,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:05:23,067 INFO L225 Difference]: With dead ends: 5212 [2024-10-12 20:05:23,067 INFO L226 Difference]: Without dead ends: 3426 [2024-10-12 20:05:23,072 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 20:05:23,072 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 56 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:05:23,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 259 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:05:23,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3426 states. [2024-10-12 20:05:23,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3426 to 3424. [2024-10-12 20:05:23,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3424 states, 3423 states have (on average 1.4814490213263218) internal successors, (5071), 3423 states have internal predecessors, (5071), 0 states have call successors, (0), 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 20:05:23,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3424 states to 3424 states and 5071 transitions. [2024-10-12 20:05:23,172 INFO L78 Accepts]: Start accepts. Automaton has 3424 states and 5071 transitions. Word has length 65 [2024-10-12 20:05:23,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:05:23,172 INFO L471 AbstractCegarLoop]: Abstraction has 3424 states and 5071 transitions. [2024-10-12 20:05:23,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:05:23,172 INFO L276 IsEmpty]: Start isEmpty. Operand 3424 states and 5071 transitions. [2024-10-12 20:05:23,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-12 20:05:23,173 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:05:23,173 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] [2024-10-12 20:05:23,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 20:05:23,174 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:05:23,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:05:23,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1964255414, now seen corresponding path program 1 times [2024-10-12 20:05:23,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:05:23,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79125067] [2024-10-12 20:05:23,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:05:23,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:05:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:05:23,227 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 20:05:23,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:05:23,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79125067] [2024-10-12 20:05:23,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79125067] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:05:23,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:05:23,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:05:23,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679020619] [2024-10-12 20:05:23,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:05:23,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:05:23,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:05:23,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:05:23,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:05:23,229 INFO L87 Difference]: Start difference. First operand 3424 states and 5071 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:05:23,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:05:23,376 INFO L93 Difference]: Finished difference Result 9796 states and 14449 transitions. [2024-10-12 20:05:23,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:05:23,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-10-12 20:05:23,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:05:23,397 INFO L225 Difference]: With dead ends: 9796 [2024-10-12 20:05:23,398 INFO L226 Difference]: Without dead ends: 6418 [2024-10-12 20:05:23,402 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 20:05:23,403 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 62 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:05:23,403 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 261 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:05:23,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6418 states. [2024-10-12 20:05:23,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6418 to 6416. [2024-10-12 20:05:23,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6416 states, 6415 states have (on average 1.4539360872954015) internal successors, (9327), 6415 states have internal predecessors, (9327), 0 states have call successors, (0), 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 20:05:23,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6416 states to 6416 states and 9327 transitions. [2024-10-12 20:05:23,606 INFO L78 Accepts]: Start accepts. Automaton has 6416 states and 9327 transitions. Word has length 65 [2024-10-12 20:05:23,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:05:23,606 INFO L471 AbstractCegarLoop]: Abstraction has 6416 states and 9327 transitions. [2024-10-12 20:05:23,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:05:23,606 INFO L276 IsEmpty]: Start isEmpty. Operand 6416 states and 9327 transitions. [2024-10-12 20:05:23,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-12 20:05:23,609 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:05:23,609 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:05:23,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 20:05:23,609 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:05:23,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:05:23,610 INFO L85 PathProgramCache]: Analyzing trace with hash 252495101, now seen corresponding path program 1 times [2024-10-12 20:05:23,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:05:23,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338874310] [2024-10-12 20:05:23,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:05:23,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:05:23,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:05:23,819 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 20:05:23,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:05:23,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338874310] [2024-10-12 20:05:23,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338874310] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:05:23,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:05:23,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 20:05:23,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706314372] [2024-10-12 20:05:23,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:05:23,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 20:05:23,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:05:23,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 20:05:23,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 20:05:23,821 INFO L87 Difference]: Start difference. First operand 6416 states and 9327 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 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 20:05:24,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:05:24,676 INFO L93 Difference]: Finished difference Result 44062 states and 64150 transitions. [2024-10-12 20:05:24,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 20:05:24,676 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 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 85 [2024-10-12 20:05:24,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:05:24,776 INFO L225 Difference]: With dead ends: 44062 [2024-10-12 20:05:24,776 INFO L226 Difference]: Without dead ends: 39580 [2024-10-12 20:05:24,790 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-12 20:05:24,790 INFO L432 NwaCegarLoop]: 189 mSDtfsCounter, 869 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:05:24,791 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 1112 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:05:24,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39580 states. [2024-10-12 20:05:25,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39580 to 11856. [2024-10-12 20:05:25,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11856 states, 11855 states have (on average 1.4480809784900885) internal successors, (17167), 11855 states have internal predecessors, (17167), 0 states have call successors, (0), 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 20:05:25,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11856 states to 11856 states and 17167 transitions. [2024-10-12 20:05:25,545 INFO L78 Accepts]: Start accepts. Automaton has 11856 states and 17167 transitions. Word has length 85 [2024-10-12 20:05:25,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:05:25,545 INFO L471 AbstractCegarLoop]: Abstraction has 11856 states and 17167 transitions. [2024-10-12 20:05:25,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 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 20:05:25,545 INFO L276 IsEmpty]: Start isEmpty. Operand 11856 states and 17167 transitions. [2024-10-12 20:05:25,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-12 20:05:25,548 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:05:25,549 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:05:25,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 20:05:25,549 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:05:25,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:05:25,550 INFO L85 PathProgramCache]: Analyzing trace with hash -157891587, now seen corresponding path program 1 times [2024-10-12 20:05:25,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:05:25,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664293099] [2024-10-12 20:05:25,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:05:25,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:05:25,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:05:25,725 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 20:05:25,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:05:25,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664293099] [2024-10-12 20:05:25,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664293099] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:05:25,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:05:25,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 20:05:25,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460688787] [2024-10-12 20:05:25,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:05:25,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 20:05:25,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:05:25,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 20:05:25,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 20:05:25,728 INFO L87 Difference]: Start difference. First operand 11856 states and 17167 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 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 20:05:26,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:05:26,799 INFO L93 Difference]: Finished difference Result 50430 states and 73366 transitions. [2024-10-12 20:05:26,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 20:05:26,800 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 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 85 [2024-10-12 20:05:26,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:05:26,889 INFO L225 Difference]: With dead ends: 50430 [2024-10-12 20:05:26,890 INFO L226 Difference]: Without dead ends: 44060 [2024-10-12 20:05:26,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-12 20:05:26,909 INFO L432 NwaCegarLoop]: 188 mSDtfsCounter, 871 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 20:05:26,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 1081 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 20:05:26,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44060 states. [2024-10-12 20:05:27,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44060 to 20464. [2024-10-12 20:05:27,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20464 states, 20463 states have (on average 1.4441186531789083) internal successors, (29551), 20463 states have internal predecessors, (29551), 0 states have call successors, (0), 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 20:05:27,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20464 states to 20464 states and 29551 transitions. [2024-10-12 20:05:27,848 INFO L78 Accepts]: Start accepts. Automaton has 20464 states and 29551 transitions. Word has length 85 [2024-10-12 20:05:27,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:05:27,848 INFO L471 AbstractCegarLoop]: Abstraction has 20464 states and 29551 transitions. [2024-10-12 20:05:27,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 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 20:05:27,852 INFO L276 IsEmpty]: Start isEmpty. Operand 20464 states and 29551 transitions. [2024-10-12 20:05:27,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-12 20:05:27,858 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:05:27,858 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:05:27,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 20:05:27,858 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:05:27,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:05:27,859 INFO L85 PathProgramCache]: Analyzing trace with hash -386530819, now seen corresponding path program 1 times [2024-10-12 20:05:27,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:05:27,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844971372] [2024-10-12 20:05:27,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:05:27,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:05:27,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:05:28,038 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-12 20:05:28,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:05:28,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844971372] [2024-10-12 20:05:28,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844971372] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:05:28,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:05:28,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 20:05:28,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305396585] [2024-10-12 20:05:28,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:05:28,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 20:05:28,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:05:28,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 20:05:28,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 20:05:28,041 INFO L87 Difference]: Start difference. First operand 20464 states and 29551 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:05:29,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:05:29,212 INFO L93 Difference]: Finished difference Result 56798 states and 82550 transitions. [2024-10-12 20:05:29,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 20:05:29,213 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-10-12 20:05:29,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:05:29,321 INFO L225 Difference]: With dead ends: 56798 [2024-10-12 20:05:29,322 INFO L226 Difference]: Without dead ends: 50428 [2024-10-12 20:05:29,341 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-12 20:05:29,341 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 911 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:05:29,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 1098 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:05:29,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50428 states. [2024-10-12 20:05:30,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50428 to 26832. [2024-10-12 20:05:30,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26832 states, 26831 states have (on average 1.4436659088367934) internal successors, (38735), 26831 states have internal predecessors, (38735), 0 states have call successors, (0), 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 20:05:30,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26832 states to 26832 states and 38735 transitions. [2024-10-12 20:05:30,424 INFO L78 Accepts]: Start accepts. Automaton has 26832 states and 38735 transitions. Word has length 85 [2024-10-12 20:05:30,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:05:30,425 INFO L471 AbstractCegarLoop]: Abstraction has 26832 states and 38735 transitions. [2024-10-12 20:05:30,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:05:30,425 INFO L276 IsEmpty]: Start isEmpty. Operand 26832 states and 38735 transitions. [2024-10-12 20:05:30,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-12 20:05:30,430 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:05:30,430 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:05:30,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 20:05:30,430 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:05:30,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:05:30,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1012186883, now seen corresponding path program 1 times [2024-10-12 20:05:30,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:05:30,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069579551] [2024-10-12 20:05:30,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:05:30,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:05:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:05:30,754 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-12 20:05:30,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:05:30,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069579551] [2024-10-12 20:05:30,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069579551] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:05:30,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:05:30,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 20:05:30,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613196899] [2024-10-12 20:05:30,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:05:30,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 20:05:30,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:05:30,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 20:05:30,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 20:05:30,758 INFO L87 Difference]: Start difference. First operand 26832 states and 38735 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 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 20:05:31,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:05:31,904 INFO L93 Difference]: Finished difference Result 63166 states and 91734 transitions. [2024-10-12 20:05:31,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 20:05:31,905 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 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 85 [2024-10-12 20:05:31,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:05:32,017 INFO L225 Difference]: With dead ends: 63166 [2024-10-12 20:05:32,017 INFO L226 Difference]: Without dead ends: 56796 [2024-10-12 20:05:32,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-12 20:05:32,054 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 965 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:05:32,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [965 Valid, 1061 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:05:32,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56796 states. [2024-10-12 20:05:33,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56796 to 33200. [2024-10-12 20:05:33,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33200 states, 33199 states have (on average 1.4433868490014758) internal successors, (47919), 33199 states have internal predecessors, (47919), 0 states have call successors, (0), 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 20:05:33,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33200 states to 33200 states and 47919 transitions. [2024-10-12 20:05:33,277 INFO L78 Accepts]: Start accepts. Automaton has 33200 states and 47919 transitions. Word has length 85 [2024-10-12 20:05:33,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:05:33,278 INFO L471 AbstractCegarLoop]: Abstraction has 33200 states and 47919 transitions. [2024-10-12 20:05:33,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 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 20:05:33,278 INFO L276 IsEmpty]: Start isEmpty. Operand 33200 states and 47919 transitions. [2024-10-12 20:05:33,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-12 20:05:33,282 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:05:33,282 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:05:33,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-12 20:05:33,283 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:05:33,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:05:33,283 INFO L85 PathProgramCache]: Analyzing trace with hash -123453443, now seen corresponding path program 1 times [2024-10-12 20:05:33,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:05:33,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051795537] [2024-10-12 20:05:33,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:05:33,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:05:33,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:05:33,450 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 20:05:33,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:05:33,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051795537] [2024-10-12 20:05:33,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051795537] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:05:33,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:05:33,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 20:05:33,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875985591] [2024-10-12 20:05:33,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:05:33,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 20:05:33,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:05:33,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 20:05:33,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 20:05:33,453 INFO L87 Difference]: Start difference. First operand 33200 states and 47919 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:05:35,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:05:35,062 INFO L93 Difference]: Finished difference Result 69534 states and 100918 transitions. [2024-10-12 20:05:35,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 20:05:35,063 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-10-12 20:05:35,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:05:35,132 INFO L225 Difference]: With dead ends: 69534 [2024-10-12 20:05:35,133 INFO L226 Difference]: Without dead ends: 63164 [2024-10-12 20:05:35,148 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-12 20:05:35,149 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 883 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:05:35,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 1098 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:05:35,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63164 states. [2024-10-12 20:05:36,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63164 to 39568. [2024-10-12 20:05:36,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39568 states, 39567 states have (on average 1.4431976141734273) internal successors, (57103), 39567 states have internal predecessors, (57103), 0 states have call successors, (0), 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 20:05:36,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39568 states to 39568 states and 57103 transitions. [2024-10-12 20:05:36,255 INFO L78 Accepts]: Start accepts. Automaton has 39568 states and 57103 transitions. Word has length 85 [2024-10-12 20:05:36,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:05:36,256 INFO L471 AbstractCegarLoop]: Abstraction has 39568 states and 57103 transitions. [2024-10-12 20:05:36,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:05:36,256 INFO L276 IsEmpty]: Start isEmpty. Operand 39568 states and 57103 transitions. [2024-10-12 20:05:36,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-12 20:05:36,260 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:05:36,260 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:05:36,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-12 20:05:36,260 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:05:36,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:05:36,261 INFO L85 PathProgramCache]: Analyzing trace with hash -426474755, now seen corresponding path program 1 times [2024-10-12 20:05:36,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:05:36,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849195692] [2024-10-12 20:05:36,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:05:36,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:05:36,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:05:36,425 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 20:05:36,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:05:36,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849195692] [2024-10-12 20:05:36,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849195692] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:05:36,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:05:36,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 20:05:36,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296645080] [2024-10-12 20:05:36,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:05:36,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 20:05:36,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:05:36,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 20:05:36,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 20:05:36,427 INFO L87 Difference]: Start difference. First operand 39568 states and 57103 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:05:38,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:05:38,033 INFO L93 Difference]: Finished difference Result 75902 states and 110102 transitions. [2024-10-12 20:05:38,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 20:05:38,034 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-10-12 20:05:38,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:05:38,125 INFO L225 Difference]: With dead ends: 75902 [2024-10-12 20:05:38,125 INFO L226 Difference]: Without dead ends: 69532 [2024-10-12 20:05:38,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-12 20:05:38,142 INFO L432 NwaCegarLoop]: 183 mSDtfsCounter, 822 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:05:38,143 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 1217 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:05:38,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69532 states. [2024-10-12 20:05:39,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69532 to 45936. [2024-10-12 20:05:39,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45936 states, 45935 states have (on average 1.4430608468488082) internal successors, (66287), 45935 states have internal predecessors, (66287), 0 states have call successors, (0), 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 20:05:39,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45936 states to 45936 states and 66287 transitions. [2024-10-12 20:05:39,698 INFO L78 Accepts]: Start accepts. Automaton has 45936 states and 66287 transitions. Word has length 85 [2024-10-12 20:05:39,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:05:39,698 INFO L471 AbstractCegarLoop]: Abstraction has 45936 states and 66287 transitions. [2024-10-12 20:05:39,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:05:39,699 INFO L276 IsEmpty]: Start isEmpty. Operand 45936 states and 66287 transitions. [2024-10-12 20:05:39,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-12 20:05:39,703 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:05:39,704 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:05:39,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-12 20:05:39,704 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:05:39,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:05:39,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1951030758, now seen corresponding path program 1 times [2024-10-12 20:05:39,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:05:39,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345430953] [2024-10-12 20:05:39,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:05:39,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:05:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:05:39,811 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:05:39,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:05:39,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345430953] [2024-10-12 20:05:39,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345430953] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:05:39,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:05:39,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:05:39,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618309812] [2024-10-12 20:05:39,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:05:39,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:05:39,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:05:39,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:05:39,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:05:39,813 INFO L87 Difference]: Start difference. First operand 45936 states and 66287 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 20:05:40,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:05:40,742 INFO L93 Difference]: Finished difference Result 91828 states and 132529 transitions. [2024-10-12 20:05:40,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:05:40,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2024-10-12 20:05:40,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:05:40,800 INFO L225 Difference]: With dead ends: 91828 [2024-10-12 20:05:40,800 INFO L226 Difference]: Without dead ends: 45938 [2024-10-12 20:05:40,826 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 20:05:40,827 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 53 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:05:40,827 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 266 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:05:40,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45938 states. [2024-10-12 20:05:42,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45938 to 45936. [2024-10-12 20:05:42,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45936 states, 45935 states have (on average 1.428083160988353) internal successors, (65599), 45935 states have internal predecessors, (65599), 0 states have call successors, (0), 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 20:05:42,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45936 states to 45936 states and 65599 transitions. [2024-10-12 20:05:42,387 INFO L78 Accepts]: Start accepts. Automaton has 45936 states and 65599 transitions. Word has length 86 [2024-10-12 20:05:42,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:05:42,388 INFO L471 AbstractCegarLoop]: Abstraction has 45936 states and 65599 transitions. [2024-10-12 20:05:42,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 20:05:42,388 INFO L276 IsEmpty]: Start isEmpty. Operand 45936 states and 65599 transitions. [2024-10-12 20:05:42,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-10-12 20:05:42,391 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:05:42,391 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:05:42,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-12 20:05:42,392 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:05:42,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:05:42,392 INFO L85 PathProgramCache]: Analyzing trace with hash 2126529701, now seen corresponding path program 1 times [2024-10-12 20:05:42,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:05:42,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341662265] [2024-10-12 20:05:42,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:05:42,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:05:42,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:05:42,477 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:05:42,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:05:42,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341662265] [2024-10-12 20:05:42,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341662265] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:05:42,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:05:42,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:05:42,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233361271] [2024-10-12 20:05:42,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:05:42,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:05:42,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:05:42,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:05:42,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:05:42,479 INFO L87 Difference]: Start difference. First operand 45936 states and 65599 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 20:05:43,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:05:43,109 INFO L93 Difference]: Finished difference Result 62760 states and 89862 transitions. [2024-10-12 20:05:43,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:05:43,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2024-10-12 20:05:43,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:05:43,142 INFO L225 Difference]: With dead ends: 62760 [2024-10-12 20:05:43,143 INFO L226 Difference]: Without dead ends: 16870 [2024-10-12 20:05:43,173 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 20:05:43,175 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 47 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:05:43,175 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 263 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:05:43,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16870 states. [2024-10-12 20:05:43,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16870 to 16863. [2024-10-12 20:05:43,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16863 states, 16862 states have (on average 1.4269956114339937) internal successors, (24062), 16862 states have internal predecessors, (24062), 0 states have call successors, (0), 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 20:05:43,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16863 states to 16863 states and 24062 transitions. [2024-10-12 20:05:43,714 INFO L78 Accepts]: Start accepts. Automaton has 16863 states and 24062 transitions. Word has length 87 [2024-10-12 20:05:43,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:05:43,714 INFO L471 AbstractCegarLoop]: Abstraction has 16863 states and 24062 transitions. [2024-10-12 20:05:43,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 20:05:43,715 INFO L276 IsEmpty]: Start isEmpty. Operand 16863 states and 24062 transitions. [2024-10-12 20:05:43,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-10-12 20:05:43,717 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:05:43,717 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 20:05:43,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-12 20:05:43,717 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:05:43,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:05:43,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1925920404, now seen corresponding path program 1 times [2024-10-12 20:05:43,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:05:43,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828356896] [2024-10-12 20:05:43,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:05:43,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:05:43,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:05:43,812 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:05:43,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:05:43,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828356896] [2024-10-12 20:05:43,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828356896] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:05:43,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:05:43,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:05:43,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603446651] [2024-10-12 20:05:43,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:05:43,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:05:43,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:05:43,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:05:43,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:05:43,817 INFO L87 Difference]: Start difference. First operand 16863 states and 24062 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 20:05:44,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:05:44,072 INFO L93 Difference]: Finished difference Result 25267 states and 36064 transitions. [2024-10-12 20:05:44,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:05:44,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2024-10-12 20:05:44,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:05:44,086 INFO L225 Difference]: With dead ends: 25267 [2024-10-12 20:05:44,087 INFO L226 Difference]: Without dead ends: 8465 [2024-10-12 20:05:44,099 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 20:05:44,099 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 49 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:05:44,100 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 242 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:05:44,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8465 states. [2024-10-12 20:05:44,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8465 to 8463. [2024-10-12 20:05:44,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8463 states, 8462 states have (on average 1.4112502954384307) internal successors, (11942), 8462 states have internal predecessors, (11942), 0 states have call successors, (0), 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 20:05:44,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8463 states to 8463 states and 11942 transitions. [2024-10-12 20:05:44,321 INFO L78 Accepts]: Start accepts. Automaton has 8463 states and 11942 transitions. Word has length 88 [2024-10-12 20:05:44,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:05:44,322 INFO L471 AbstractCegarLoop]: Abstraction has 8463 states and 11942 transitions. [2024-10-12 20:05:44,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 20:05:44,322 INFO L276 IsEmpty]: Start isEmpty. Operand 8463 states and 11942 transitions. [2024-10-12 20:05:44,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-12 20:05:44,323 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:05:44,323 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:44,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-12 20:05:44,323 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:05:44,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:05:44,324 INFO L85 PathProgramCache]: Analyzing trace with hash -718208830, now seen corresponding path program 1 times [2024-10-12 20:05:44,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:05:44,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226323047] [2024-10-12 20:05:44,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:05:44,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:05:44,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:05:44,443 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:05:44,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:05:44,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226323047] [2024-10-12 20:05:44,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226323047] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:05:44,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:05:44,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:05:44,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365288825] [2024-10-12 20:05:44,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:05:44,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:05:44,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:05:44,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:05:44,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:05:44,445 INFO L87 Difference]: Start difference. First operand 8463 states and 11942 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:05:44,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:05:44,557 INFO L93 Difference]: Finished difference Result 12667 states and 17884 transitions. [2024-10-12 20:05:44,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:05:44,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2024-10-12 20:05:44,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:05:44,565 INFO L225 Difference]: With dead ends: 12667 [2024-10-12 20:05:44,565 INFO L226 Difference]: Without dead ends: 4265 [2024-10-12 20:05:44,571 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 20:05:44,571 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 46 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:05:44,572 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 227 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:05:44,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4265 states. [2024-10-12 20:05:44,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4265 to 4263. [2024-10-12 20:05:44,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4263 states, 4262 states have (on average 1.3941811356170812) internal successors, (5942), 4262 states have internal predecessors, (5942), 0 states have call successors, (0), 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 20:05:44,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4263 states to 4263 states and 5942 transitions. [2024-10-12 20:05:44,793 INFO L78 Accepts]: Start accepts. Automaton has 4263 states and 5942 transitions. Word has length 90 [2024-10-12 20:05:44,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:05:44,793 INFO L471 AbstractCegarLoop]: Abstraction has 4263 states and 5942 transitions. [2024-10-12 20:05:44,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:05:44,794 INFO L276 IsEmpty]: Start isEmpty. Operand 4263 states and 5942 transitions. [2024-10-12 20:05:44,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-12 20:05:44,795 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:05:44,795 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:44,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-12 20:05:44,796 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:05:44,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:05:44,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1658494064, now seen corresponding path program 1 times [2024-10-12 20:05:44,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:05:44,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074074135] [2024-10-12 20:05:44,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:05:44,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:05:44,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:05:44,907 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:05:44,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:05:44,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074074135] [2024-10-12 20:05:44,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074074135] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:05:44,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:05:44,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:05:44,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719567049] [2024-10-12 20:05:44,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:05:44,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:05:44,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:05:44,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:05:44,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:05:44,909 INFO L87 Difference]: Start difference. First operand 4263 states and 5942 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 20:05:45,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:05:45,000 INFO L93 Difference]: Finished difference Result 6367 states and 8884 transitions. [2024-10-12 20:05:45,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:05:45,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2024-10-12 20:05:45,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:05:45,006 INFO L225 Difference]: With dead ends: 6367 [2024-10-12 20:05:45,007 INFO L226 Difference]: Without dead ends: 2165 [2024-10-12 20:05:45,010 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 20:05:45,010 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 43 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:05:45,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 212 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:05:45,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2024-10-12 20:05:45,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 2163. [2024-10-12 20:05:45,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 2162 states have (on average 1.3746530989824237) internal successors, (2972), 2162 states have internal predecessors, (2972), 0 states have call successors, (0), 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 20:05:45,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 2972 transitions. [2024-10-12 20:05:45,103 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 2972 transitions. Word has length 92 [2024-10-12 20:05:45,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:05:45,104 INFO L471 AbstractCegarLoop]: Abstraction has 2163 states and 2972 transitions. [2024-10-12 20:05:45,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 20:05:45,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 2972 transitions. [2024-10-12 20:05:45,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-12 20:05:45,105 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:05:45,106 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:45,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-12 20:05:45,106 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:05:45,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:05:45,107 INFO L85 PathProgramCache]: Analyzing trace with hash 993978782, now seen corresponding path program 1 times [2024-10-12 20:05:45,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:05:45,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838509728] [2024-10-12 20:05:45,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:05:45,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:05:45,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:05:45,214 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:05:45,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:05:45,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838509728] [2024-10-12 20:05:45,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838509728] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:05:45,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:05:45,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:05:45,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129065343] [2024-10-12 20:05:45,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:05:45,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:05:45,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:05:45,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:05:45,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:05:45,217 INFO L87 Difference]: Start difference. First operand 2163 states and 2972 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:05:45,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:05:45,269 INFO L93 Difference]: Finished difference Result 3217 states and 4429 transitions. [2024-10-12 20:05:45,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:05:45,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-10-12 20:05:45,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:05:45,274 INFO L225 Difference]: With dead ends: 3217 [2024-10-12 20:05:45,274 INFO L226 Difference]: Without dead ends: 1115 [2024-10-12 20:05:45,276 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 20:05:45,277 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 40 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:05:45,277 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 197 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:05:45,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2024-10-12 20:05:45,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1113. [2024-10-12 20:05:45,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 1112 states have (on average 1.3507194244604317) internal successors, (1502), 1112 states have internal predecessors, (1502), 0 states have call successors, (0), 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 20:05:45,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1502 transitions. [2024-10-12 20:05:45,326 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1502 transitions. Word has length 94 [2024-10-12 20:05:45,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:05:45,326 INFO L471 AbstractCegarLoop]: Abstraction has 1113 states and 1502 transitions. [2024-10-12 20:05:45,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:05:45,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1502 transitions. [2024-10-12 20:05:45,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-10-12 20:05:45,327 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:05:45,327 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:45,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-12 20:05:45,328 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:05:45,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:05:45,328 INFO L85 PathProgramCache]: Analyzing trace with hash 65849420, now seen corresponding path program 1 times [2024-10-12 20:05:45,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:05:45,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788618206] [2024-10-12 20:05:45,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:05:45,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:05:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:05:45,517 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 20:05:45,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:05:45,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788618206] [2024-10-12 20:05:45,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788618206] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 20:05:45,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336724566] [2024-10-12 20:05:45,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:05:45,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 20:05:45,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 20:05:45,521 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 20:05:45,523 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 20:05:45,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:05:45,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 20:05:45,690 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 20:05:45,901 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 20:05:45,901 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 20:05:46,395 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 20:05:46,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336724566] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 20:05:46,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 20:05:46,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2024-10-12 20:05:46,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073295112] [2024-10-12 20:05:46,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 20:05:46,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 20:05:46,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:05:46,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 20:05:46,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-10-12 20:05:46,399 INFO L87 Difference]: Start difference. First operand 1113 states and 1502 transitions. Second operand has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 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 20:05:46,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:05:46,566 INFO L93 Difference]: Finished difference Result 3649 states and 4901 transitions. [2024-10-12 20:05:46,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 20:05:46,567 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 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 96 [2024-10-12 20:05:46,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:05:46,573 INFO L225 Difference]: With dead ends: 3649 [2024-10-12 20:05:46,573 INFO L226 Difference]: Without dead ends: 2597 [2024-10-12 20:05:46,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2024-10-12 20:05:46,575 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 145 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:05:46,577 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 517 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:05:46,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2024-10-12 20:05:46,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 2520. [2024-10-12 20:05:46,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2520 states, 2519 states have (on average 1.3072647876141326) internal successors, (3293), 2519 states have internal predecessors, (3293), 0 states have call successors, (0), 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 20:05:46,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2520 states to 2520 states and 3293 transitions. [2024-10-12 20:05:46,692 INFO L78 Accepts]: Start accepts. Automaton has 2520 states and 3293 transitions. Word has length 96 [2024-10-12 20:05:46,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:05:46,692 INFO L471 AbstractCegarLoop]: Abstraction has 2520 states and 3293 transitions. [2024-10-12 20:05:46,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 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 20:05:46,693 INFO L276 IsEmpty]: Start isEmpty. Operand 2520 states and 3293 transitions. [2024-10-12 20:05:46,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-12 20:05:46,694 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:05:46,694 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:46,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 20:05:46,896 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,SelfDestructingSolverStorable24 [2024-10-12 20:05:46,897 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:05:46,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:05:46,897 INFO L85 PathProgramCache]: Analyzing trace with hash -690570241, now seen corresponding path program 1 times [2024-10-12 20:05:46,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:05:46,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531196857] [2024-10-12 20:05:46,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:05:46,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:05:46,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:05:47,921 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:05:47,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:05:47,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531196857] [2024-10-12 20:05:47,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531196857] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 20:05:47,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947159476] [2024-10-12 20:05:47,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:05:47,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 20:05:47,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 20:05:47,924 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 20:05:47,926 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 20:05:48,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:05:48,070 INFO L255 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-12 20:05:48,074 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 20:05:48,570 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:05:48,571 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 20:05:49,442 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:05:49,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947159476] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 20:05:49,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 20:05:49,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 23 [2024-10-12 20:05:49,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663721333] [2024-10-12 20:05:49,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 20:05:49,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-12 20:05:49,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:05:49,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-12 20:05:49,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2024-10-12 20:05:49,445 INFO L87 Difference]: Start difference. First operand 2520 states and 3293 transitions. Second operand has 24 states, 24 states have (on average 9.791666666666666) internal successors, (235), 23 states have internal predecessors, (235), 0 states have call successors, (0), 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 20:05:50,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:05:50,135 INFO L93 Difference]: Finished difference Result 7386 states and 9720 transitions. [2024-10-12 20:05:50,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 20:05:50,136 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 9.791666666666666) internal successors, (235), 23 states have internal predecessors, (235), 0 states have call successors, (0), 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 97 [2024-10-12 20:05:50,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:05:50,144 INFO L225 Difference]: With dead ends: 7386 [2024-10-12 20:05:50,145 INFO L226 Difference]: Without dead ends: 5050 [2024-10-12 20:05:50,149 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=235, Invalid=955, Unknown=0, NotChecked=0, Total=1190 [2024-10-12 20:05:50,149 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 1151 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 20:05:50,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1151 Valid, 744 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 20:05:50,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5050 states. [2024-10-12 20:05:50,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5050 to 4988. [2024-10-12 20:05:50,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4988 states, 4987 states have (on average 1.2973731702426308) internal successors, (6470), 4987 states have internal predecessors, (6470), 0 states have call successors, (0), 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 20:05:50,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4988 states to 4988 states and 6470 transitions. [2024-10-12 20:05:50,345 INFO L78 Accepts]: Start accepts. Automaton has 4988 states and 6470 transitions. Word has length 97 [2024-10-12 20:05:50,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:05:50,346 INFO L471 AbstractCegarLoop]: Abstraction has 4988 states and 6470 transitions. [2024-10-12 20:05:50,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 9.791666666666666) internal successors, (235), 23 states have internal predecessors, (235), 0 states have call successors, (0), 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 20:05:50,346 INFO L276 IsEmpty]: Start isEmpty. Operand 4988 states and 6470 transitions. [2024-10-12 20:05:50,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-12 20:05:50,347 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:05:50,347 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:50,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-12 20:05:50,551 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,SelfDestructingSolverStorable25 [2024-10-12 20:05:50,552 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:05:50,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:05:50,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1529382911, now seen corresponding path program 1 times [2024-10-12 20:05:50,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:05:50,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825036364] [2024-10-12 20:05:50,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:05:50,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:05:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:05:51,291 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:05:51,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:05:51,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825036364] [2024-10-12 20:05:51,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825036364] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 20:05:51,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25881092] [2024-10-12 20:05:51,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:05:51,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 20:05:51,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 20:05:51,294 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 20:05:51,296 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 20:05:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:05:51,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-12 20:05:51,419 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 20:05:51,926 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:05:51,926 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 20:05:52,778 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:05:52,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25881092] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 20:05:52,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 20:05:52,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 25 [2024-10-12 20:05:52,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41117468] [2024-10-12 20:05:52,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 20:05:52,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-12 20:05:52,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:05:52,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-12 20:05:52,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=584, Unknown=0, NotChecked=0, Total=650 [2024-10-12 20:05:52,780 INFO L87 Difference]: Start difference. First operand 4988 states and 6470 transitions. Second operand has 26 states, 26 states have (on average 10.26923076923077) internal successors, (267), 25 states have internal predecessors, (267), 0 states have call successors, (0), 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 20:05:55,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:05:55,756 INFO L93 Difference]: Finished difference Result 26585 states and 34826 transitions. [2024-10-12 20:05:55,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-10-12 20:05:55,756 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 10.26923076923077) internal successors, (267), 25 states have internal predecessors, (267), 0 states have call successors, (0), 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 97 [2024-10-12 20:05:55,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:05:55,781 INFO L225 Difference]: With dead ends: 26585 [2024-10-12 20:05:55,781 INFO L226 Difference]: Without dead ends: 21867 [2024-10-12 20:05:55,790 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=903, Invalid=4067, Unknown=0, NotChecked=0, Total=4970 [2024-10-12 20:05:55,790 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 1951 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1951 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 1240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 20:05:55,791 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1951 Valid, 1106 Invalid, 1240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 20:05:55,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21867 states. [2024-10-12 20:05:56,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21867 to 21281. [2024-10-12 20:05:56,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21281 states, 21280 states have (on average 1.2816729323308271) internal successors, (27274), 21280 states have internal predecessors, (27274), 0 states have call successors, (0), 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 20:05:56,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21281 states to 21281 states and 27274 transitions. [2024-10-12 20:05:56,419 INFO L78 Accepts]: Start accepts. Automaton has 21281 states and 27274 transitions. Word has length 97 [2024-10-12 20:05:56,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:05:56,420 INFO L471 AbstractCegarLoop]: Abstraction has 21281 states and 27274 transitions. [2024-10-12 20:05:56,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.26923076923077) internal successors, (267), 25 states have internal predecessors, (267), 0 states have call successors, (0), 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 20:05:56,420 INFO L276 IsEmpty]: Start isEmpty. Operand 21281 states and 27274 transitions. [2024-10-12 20:05:56,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-10-12 20:05:56,422 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:05:56,422 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:56,440 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 20:05:56,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 20:05:56,627 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:05:56,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:05:56,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1369969802, now seen corresponding path program 1 times [2024-10-12 20:05:56,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:05:56,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676246181] [2024-10-12 20:05:56,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:05:56,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:05:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:05:57,227 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:05:57,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:05:57,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676246181] [2024-10-12 20:05:57,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676246181] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 20:05:57,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694376671] [2024-10-12 20:05:57,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:05:57,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 20:05:57,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 20:05:57,232 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 20:05:57,234 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 20:05:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:05:57,354 INFO L255 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-12 20:05:57,357 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 20:05:58,086 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:05:58,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 20:05:59,536 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:05:59,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694376671] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 20:05:59,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 20:05:59,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 33 [2024-10-12 20:05:59,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959014043] [2024-10-12 20:05:59,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 20:05:59,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-12 20:05:59,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:05:59,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-12 20:05:59,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1011, Unknown=0, NotChecked=0, Total=1122 [2024-10-12 20:05:59,539 INFO L87 Difference]: Start difference. First operand 21281 states and 27274 transitions. Second operand has 34 states, 34 states have (on average 7.823529411764706) internal successors, (266), 33 states have internal predecessors, (266), 0 states have call successors, (0), 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 20:06:02,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:06:02,760 INFO L93 Difference]: Finished difference Result 51208 states and 66070 transitions. [2024-10-12 20:06:02,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-10-12 20:06:02,761 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 7.823529411764706) internal successors, (266), 33 states have internal predecessors, (266), 0 states have call successors, (0), 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 98 [2024-10-12 20:06:02,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:06:02,805 INFO L225 Difference]: With dead ends: 51208 [2024-10-12 20:06:02,805 INFO L226 Difference]: Without dead ends: 34091 [2024-10-12 20:06:02,828 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1437 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1184, Invalid=4978, Unknown=0, NotChecked=0, Total=6162 [2024-10-12 20:06:02,829 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 3950 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3950 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 20:06:02,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3950 Valid, 1149 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 20:06:02,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34091 states. [2024-10-12 20:06:03,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34091 to 28025. [2024-10-12 20:06:03,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28025 states, 28024 states have (on average 1.2745860690836426) internal successors, (35719), 28024 states have internal predecessors, (35719), 0 states have call successors, (0), 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 20:06:03,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28025 states to 28025 states and 35719 transitions. [2024-10-12 20:06:03,637 INFO L78 Accepts]: Start accepts. Automaton has 28025 states and 35719 transitions. Word has length 98 [2024-10-12 20:06:03,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:06:03,637 INFO L471 AbstractCegarLoop]: Abstraction has 28025 states and 35719 transitions. [2024-10-12 20:06:03,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.823529411764706) internal successors, (266), 33 states have internal predecessors, (266), 0 states have call successors, (0), 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 20:06:03,638 INFO L276 IsEmpty]: Start isEmpty. Operand 28025 states and 35719 transitions. [2024-10-12 20:06:03,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-10-12 20:06:03,639 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:06:03,639 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:03,657 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 20:06:03,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-12 20:06:03,840 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:06:03,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:06:03,840 INFO L85 PathProgramCache]: Analyzing trace with hash -611699246, now seen corresponding path program 1 times [2024-10-12 20:06:03,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:06:03,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019533001] [2024-10-12 20:06:03,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:06:03,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:06:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:06:04,284 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:06:04,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:06:04,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019533001] [2024-10-12 20:06:04,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019533001] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 20:06:04,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225058238] [2024-10-12 20:06:04,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:06:04,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 20:06:04,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 20:06:04,286 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 20:06:04,287 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 20:06:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:06:04,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-12 20:06:04,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 20:06:04,827 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:06:04,827 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 20:06:05,601 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 20:06:05,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225058238] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 20:06:05,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 20:06:05,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2024-10-12 20:06:05,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000949505] [2024-10-12 20:06:05,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 20:06:05,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-12 20:06:05,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:06:05,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-12 20:06:05,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2024-10-12 20:06:05,603 INFO L87 Difference]: Start difference. First operand 28025 states and 35719 transitions. Second operand has 23 states, 23 states have (on average 11.521739130434783) internal successors, (265), 22 states have internal predecessors, (265), 0 states have call successors, (0), 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 20:06:09,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:06:09,896 INFO L93 Difference]: Finished difference Result 128883 states and 164557 transitions. [2024-10-12 20:06:09,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-10-12 20:06:09,897 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 11.521739130434783) internal successors, (265), 22 states have internal predecessors, (265), 0 states have call successors, (0), 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 98 [2024-10-12 20:06:09,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:06:10,037 INFO L225 Difference]: With dead ends: 128883 [2024-10-12 20:06:10,038 INFO L226 Difference]: Without dead ends: 102993 [2024-10-12 20:06:10,082 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=583, Invalid=2279, Unknown=0, NotChecked=0, Total=2862 [2024-10-12 20:06:10,082 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 995 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 1538 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 1385 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 20:06:10,083 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 1385 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1538 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 20:06:10,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102993 states.