./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label11.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/eca-rers2012/Problem03_label11.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 698befc2b2b3848a03ec5b9664ba6dadb47a33cbe123de396a3ce9bbb5d1873c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 15:17:25,309 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 15:17:25,378 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 15:17:25,381 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 15:17:25,385 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 15:17:25,402 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 15:17:25,403 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 15:17:25,403 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 15:17:25,404 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 15:17:25,404 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 15:17:25,404 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 15:17:25,404 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 15:17:25,406 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 15:17:25,406 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 15:17:25,406 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 15:17:25,406 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 15:17:25,407 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 15:17:25,407 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 15:17:25,407 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 15:17:25,407 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 15:17:25,407 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 15:17:25,411 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 15:17:25,411 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 15:17:25,411 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 15:17:25,411 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 15:17:25,412 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 15:17:25,412 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 15:17:25,412 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 15:17:25,412 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 15:17:25,412 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 15:17:25,412 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 15:17:25,413 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 15:17:25,413 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 15:17:25,413 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 15:17:25,413 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 15:17:25,413 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 15:17:25,413 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 15:17:25,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 15:17:25,414 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 15:17:25,414 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 15:17:25,415 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 15:17:25,416 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 15:17:25,416 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 698befc2b2b3848a03ec5b9664ba6dadb47a33cbe123de396a3ce9bbb5d1873c [2024-10-12 15:17:25,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 15:17:25,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 15:17:25,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 15:17:25,632 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 15:17:25,633 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 15:17:25,634 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label11.c [2024-10-12 15:17:26,887 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 15:17:27,155 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 15:17:27,156 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label11.c [2024-10-12 15:17:27,174 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bca90f9f/85cd1ca9e4464a8bbfe8ab1fd2745ffa/FLAG63aaba1db [2024-10-12 15:17:27,190 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bca90f9f/85cd1ca9e4464a8bbfe8ab1fd2745ffa [2024-10-12 15:17:27,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 15:17:27,194 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 15:17:27,197 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 15:17:27,198 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 15:17:27,202 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 15:17:27,203 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:17:27" (1/1) ... [2024-10-12 15:17:27,203 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d5e794f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:17:27, skipping insertion in model container [2024-10-12 15:17:27,204 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:17:27" (1/1) ... [2024-10-12 15:17:27,291 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 15:17:27,682 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/eca-rers2012/Problem03_label11.c[60283,60296] [2024-10-12 15:17:27,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 15:17:27,712 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 15:17:27,864 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/eca-rers2012/Problem03_label11.c[60283,60296] [2024-10-12 15:17:27,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 15:17:27,891 INFO L204 MainTranslator]: Completed translation [2024-10-12 15:17:27,891 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:17:27 WrapperNode [2024-10-12 15:17:27,891 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 15:17:27,892 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 15:17:27,892 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 15:17:27,892 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 15:17:27,900 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:17:27" (1/1) ... [2024-10-12 15:17:27,930 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:17:27" (1/1) ... [2024-10-12 15:17:27,996 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2024-10-12 15:17:27,996 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 15:17:27,997 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 15:17:27,997 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 15:17:27,997 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 15:17:28,008 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:17:27" (1/1) ... [2024-10-12 15:17:28,009 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:17:27" (1/1) ... [2024-10-12 15:17:28,046 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:17:27" (1/1) ... [2024-10-12 15:17:28,088 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 15:17:28,088 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:17:27" (1/1) ... [2024-10-12 15:17:28,088 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:17:27" (1/1) ... [2024-10-12 15:17:28,147 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:17:27" (1/1) ... [2024-10-12 15:17:28,155 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:17:27" (1/1) ... [2024-10-12 15:17:28,161 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:17:27" (1/1) ... [2024-10-12 15:17:28,168 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:17:27" (1/1) ... [2024-10-12 15:17:28,178 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 15:17:28,179 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 15:17:28,179 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 15:17:28,179 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 15:17:28,180 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:17:27" (1/1) ... [2024-10-12 15:17:28,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 15:17:28,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:17:28,208 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 15:17:28,210 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 15:17:28,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 15:17:28,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 15:17:28,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 15:17:28,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 15:17:28,333 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 15:17:28,335 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 15:17:29,710 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-10-12 15:17:29,712 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 15:17:29,769 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 15:17:29,773 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 15:17:29,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:17:29 BoogieIcfgContainer [2024-10-12 15:17:29,774 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 15:17:29,775 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 15:17:29,775 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 15:17:29,778 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 15:17:29,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:17:27" (1/3) ... [2024-10-12 15:17:29,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e6cd68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:17:29, skipping insertion in model container [2024-10-12 15:17:29,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:17:27" (2/3) ... [2024-10-12 15:17:29,780 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e6cd68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:17:29, skipping insertion in model container [2024-10-12 15:17:29,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:17:29" (3/3) ... [2024-10-12 15:17:29,781 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label11.c [2024-10-12 15:17:29,795 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 15:17:29,796 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 15:17:29,856 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 15:17:29,863 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;@1f52a5d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 15:17:29,863 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 15:17:29,868 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 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 15:17:29,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-10-12 15:17:29,881 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:29,882 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:29,882 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:29,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:29,890 INFO L85 PathProgramCache]: Analyzing trace with hash 315161196, now seen corresponding path program 1 times [2024-10-12 15:17:29,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:29,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737090987] [2024-10-12 15:17:29,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:29,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:30,409 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 15:17:30,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:30,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737090987] [2024-10-12 15:17:30,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737090987] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:30,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:17:30,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:17:30,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756131425] [2024-10-12 15:17:30,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:30,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 15:17:30,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:30,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 15:17:30,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 15:17:30,445 INFO L87 Difference]: Start difference. First operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 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) Second operand has 2 states, 2 states have (on average 96.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 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 15:17:30,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:30,491 INFO L93 Difference]: Finished difference Result 479 states and 913 transitions. [2024-10-12 15:17:30,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 15:17:30,498 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 96.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 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 192 [2024-10-12 15:17:30,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:30,509 INFO L225 Difference]: With dead ends: 479 [2024-10-12 15:17:30,509 INFO L226 Difference]: Without dead ends: 238 [2024-10-12 15:17:30,513 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 15:17:30,524 INFO L432 NwaCegarLoop]: 392 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:30,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 392 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 15:17:30,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-10-12 15:17:30,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2024-10-12 15:17:30,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.6540084388185654) internal successors, (392), 237 states have internal predecessors, (392), 0 states have call successors, (0), 0 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 15:17:30,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 392 transitions. [2024-10-12 15:17:30,571 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 392 transitions. Word has length 192 [2024-10-12 15:17:30,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:30,572 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 392 transitions. [2024-10-12 15:17:30,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 96.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 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 15:17:30,572 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 392 transitions. [2024-10-12 15:17:30,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-10-12 15:17:30,574 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:30,575 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:30,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 15:17:30,575 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:30,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:30,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1347855294, now seen corresponding path program 1 times [2024-10-12 15:17:30,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:30,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258145085] [2024-10-12 15:17:30,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:30,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:30,968 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 15:17:30,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:30,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258145085] [2024-10-12 15:17:30,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258145085] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:30,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:17:30,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:17:30,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129079148] [2024-10-12 15:17:30,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:30,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:17:30,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:30,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:17:30,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:17:30,973 INFO L87 Difference]: Start difference. First operand 238 states and 392 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 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 15:17:31,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:31,800 INFO L93 Difference]: Finished difference Result 686 states and 1135 transitions. [2024-10-12 15:17:31,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:17:31,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 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 192 [2024-10-12 15:17:31,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:31,805 INFO L225 Difference]: With dead ends: 686 [2024-10-12 15:17:31,805 INFO L226 Difference]: Without dead ends: 449 [2024-10-12 15:17:31,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 15:17:31,808 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 85 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:31,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 90 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 15:17:31,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2024-10-12 15:17:31,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 447. [2024-10-12 15:17:31,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 1.6233183856502242) internal successors, (724), 446 states have internal predecessors, (724), 0 states have call successors, (0), 0 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 15:17:31,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 724 transitions. [2024-10-12 15:17:31,830 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 724 transitions. Word has length 192 [2024-10-12 15:17:31,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:31,831 INFO L471 AbstractCegarLoop]: Abstraction has 447 states and 724 transitions. [2024-10-12 15:17:31,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 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 15:17:31,831 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 724 transitions. [2024-10-12 15:17:31,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-10-12 15:17:31,834 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:31,835 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:31,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 15:17:31,835 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:31,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:31,836 INFO L85 PathProgramCache]: Analyzing trace with hash 948459848, now seen corresponding path program 1 times [2024-10-12 15:17:31,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:31,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043566291] [2024-10-12 15:17:31,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:31,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:32,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:17:32,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:32,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043566291] [2024-10-12 15:17:32,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043566291] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:32,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:17:32,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:17:32,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156824276] [2024-10-12 15:17:32,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:32,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:17:32,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:32,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:17:32,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:17:32,027 INFO L87 Difference]: Start difference. First operand 447 states and 724 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 0 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 15:17:32,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:32,710 INFO L93 Difference]: Finished difference Result 1317 states and 2138 transitions. [2024-10-12 15:17:32,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:17:32,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 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 197 [2024-10-12 15:17:32,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:32,713 INFO L225 Difference]: With dead ends: 1317 [2024-10-12 15:17:32,713 INFO L226 Difference]: Without dead ends: 871 [2024-10-12 15:17:32,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 15:17:32,715 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 251 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:32,716 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 156 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 15:17:32,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2024-10-12 15:17:32,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 867. [2024-10-12 15:17:32,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 866 states have (on average 1.5277136258660509) internal successors, (1323), 866 states have internal predecessors, (1323), 0 states have call successors, (0), 0 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 15:17:32,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1323 transitions. [2024-10-12 15:17:32,745 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1323 transitions. Word has length 197 [2024-10-12 15:17:32,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:32,746 INFO L471 AbstractCegarLoop]: Abstraction has 867 states and 1323 transitions. [2024-10-12 15:17:32,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 0 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 15:17:32,749 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1323 transitions. [2024-10-12 15:17:32,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-10-12 15:17:32,757 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:32,757 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:32,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 15:17:32,757 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:32,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:32,759 INFO L85 PathProgramCache]: Analyzing trace with hash 726042367, now seen corresponding path program 1 times [2024-10-12 15:17:32,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:32,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961238416] [2024-10-12 15:17:32,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:32,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:32,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:32,893 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:17:32,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:32,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961238416] [2024-10-12 15:17:32,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961238416] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:32,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:17:32,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:17:32,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499429979] [2024-10-12 15:17:32,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:32,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:17:32,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:32,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:17:32,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:17:32,895 INFO L87 Difference]: Start difference. First operand 867 states and 1323 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 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 15:17:33,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:33,635 INFO L93 Difference]: Finished difference Result 2565 states and 3930 transitions. [2024-10-12 15:17:33,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:17:33,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 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 200 [2024-10-12 15:17:33,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:33,640 INFO L225 Difference]: With dead ends: 2565 [2024-10-12 15:17:33,641 INFO L226 Difference]: Without dead ends: 1699 [2024-10-12 15:17:33,642 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 15:17:33,643 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:33,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 88 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 15:17:33,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2024-10-12 15:17:33,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1683. [2024-10-12 15:17:33,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1682 states have (on average 1.4982164090368608) internal successors, (2520), 1682 states have internal predecessors, (2520), 0 states have call successors, (0), 0 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 15:17:33,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2520 transitions. [2024-10-12 15:17:33,678 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2520 transitions. Word has length 200 [2024-10-12 15:17:33,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:33,678 INFO L471 AbstractCegarLoop]: Abstraction has 1683 states and 2520 transitions. [2024-10-12 15:17:33,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 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 15:17:33,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2520 transitions. [2024-10-12 15:17:33,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-10-12 15:17:33,683 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:33,683 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:33,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 15:17:33,684 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:33,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:33,685 INFO L85 PathProgramCache]: Analyzing trace with hash -746198684, now seen corresponding path program 1 times [2024-10-12 15:17:33,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:33,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781743945] [2024-10-12 15:17:33,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:33,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:33,958 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:17:33,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:33,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781743945] [2024-10-12 15:17:33,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781743945] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:33,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:17:33,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:17:33,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029931518] [2024-10-12 15:17:33,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:33,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:17:33,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:33,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:17:33,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:17:33,960 INFO L87 Difference]: Start difference. First operand 1683 states and 2520 transitions. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 0 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 15:17:34,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:34,667 INFO L93 Difference]: Finished difference Result 4187 states and 6246 transitions. [2024-10-12 15:17:34,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:17:34,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 202 [2024-10-12 15:17:34,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:34,675 INFO L225 Difference]: With dead ends: 4187 [2024-10-12 15:17:34,675 INFO L226 Difference]: Without dead ends: 2505 [2024-10-12 15:17:34,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 15:17:34,678 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 236 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:34,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 111 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 15:17:34,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2505 states. [2024-10-12 15:17:34,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2505 to 2504. [2024-10-12 15:17:34,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2504 states, 2503 states have (on average 1.4702357171394327) internal successors, (3680), 2503 states have internal predecessors, (3680), 0 states have call successors, (0), 0 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 15:17:34,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2504 states to 2504 states and 3680 transitions. [2024-10-12 15:17:34,717 INFO L78 Accepts]: Start accepts. Automaton has 2504 states and 3680 transitions. Word has length 202 [2024-10-12 15:17:34,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:34,717 INFO L471 AbstractCegarLoop]: Abstraction has 2504 states and 3680 transitions. [2024-10-12 15:17:34,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 0 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 15:17:34,718 INFO L276 IsEmpty]: Start isEmpty. Operand 2504 states and 3680 transitions. [2024-10-12 15:17:34,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-10-12 15:17:34,722 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:34,722 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:34,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 15:17:34,722 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:34,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:34,723 INFO L85 PathProgramCache]: Analyzing trace with hash -616042546, now seen corresponding path program 1 times [2024-10-12 15:17:34,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:34,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702350868] [2024-10-12 15:17:34,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:34,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:35,217 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 15:17:35,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:35,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702350868] [2024-10-12 15:17:35,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702350868] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:35,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:17:35,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:17:35,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818595291] [2024-10-12 15:17:35,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:35,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 15:17:35,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:35,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 15:17:35,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:17:35,220 INFO L87 Difference]: Start difference. First operand 2504 states and 3680 transitions. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 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 15:17:35,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:35,996 INFO L93 Difference]: Finished difference Result 5324 states and 7889 transitions. [2024-10-12 15:17:35,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 15:17:35,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2024-10-12 15:17:35,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:36,005 INFO L225 Difference]: With dead ends: 5324 [2024-10-12 15:17:36,006 INFO L226 Difference]: Without dead ends: 2473 [2024-10-12 15:17:36,008 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:17:36,009 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 330 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:36,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 44 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 15:17:36,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2024-10-12 15:17:36,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 2473. [2024-10-12 15:17:36,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 2472 states have (on average 1.3491100323624596) internal successors, (3335), 2472 states have internal predecessors, (3335), 0 states have call successors, (0), 0 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 15:17:36,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 3335 transitions. [2024-10-12 15:17:36,043 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 3335 transitions. Word has length 207 [2024-10-12 15:17:36,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:36,043 INFO L471 AbstractCegarLoop]: Abstraction has 2473 states and 3335 transitions. [2024-10-12 15:17:36,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 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 15:17:36,043 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 3335 transitions. [2024-10-12 15:17:36,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-10-12 15:17:36,048 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:36,048 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:36,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 15:17:36,049 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:36,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:36,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1999611277, now seen corresponding path program 1 times [2024-10-12 15:17:36,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:36,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729363839] [2024-10-12 15:17:36,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:36,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:36,285 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 15:17:36,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:36,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729363839] [2024-10-12 15:17:36,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729363839] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:36,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:17:36,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:17:36,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608697385] [2024-10-12 15:17:36,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:36,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:17:36,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:36,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:17:36,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:17:36,288 INFO L87 Difference]: Start difference. First operand 2473 states and 3335 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:36,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:36,950 INFO L93 Difference]: Finished difference Result 7382 states and 9959 transitions. [2024-10-12 15:17:36,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:17:36,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2024-10-12 15:17:36,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:36,965 INFO L225 Difference]: With dead ends: 7382 [2024-10-12 15:17:36,965 INFO L226 Difference]: Without dead ends: 4910 [2024-10-12 15:17:36,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 15:17:36,971 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 208 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:36,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 117 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 15:17:36,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4910 states. [2024-10-12 15:17:37,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4910 to 4097. [2024-10-12 15:17:37,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4097 states, 4096 states have (on average 1.247314453125) internal successors, (5109), 4096 states have internal predecessors, (5109), 0 states have call successors, (0), 0 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 15:17:37,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4097 states to 4097 states and 5109 transitions. [2024-10-12 15:17:37,044 INFO L78 Accepts]: Start accepts. Automaton has 4097 states and 5109 transitions. Word has length 209 [2024-10-12 15:17:37,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:37,044 INFO L471 AbstractCegarLoop]: Abstraction has 4097 states and 5109 transitions. [2024-10-12 15:17:37,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:37,045 INFO L276 IsEmpty]: Start isEmpty. Operand 4097 states and 5109 transitions. [2024-10-12 15:17:37,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-10-12 15:17:37,049 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:37,050 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:37,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 15:17:37,050 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:37,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:37,050 INFO L85 PathProgramCache]: Analyzing trace with hash 468335256, now seen corresponding path program 1 times [2024-10-12 15:17:37,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:37,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186340478] [2024-10-12 15:17:37,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:37,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:37,214 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:17:37,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:37,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186340478] [2024-10-12 15:17:37,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186340478] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:37,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:17:37,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:17:37,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284958665] [2024-10-12 15:17:37,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:37,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:17:37,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:37,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:17:37,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:17:37,216 INFO L87 Difference]: Start difference. First operand 4097 states and 5109 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 0 states have call successors, (0), 0 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 15:17:37,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:37,797 INFO L93 Difference]: Finished difference Result 10652 states and 13296 transitions. [2024-10-12 15:17:37,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:17:37,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 0 states have call successors, (0), 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 220 [2024-10-12 15:17:37,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:37,814 INFO L225 Difference]: With dead ends: 10652 [2024-10-12 15:17:37,815 INFO L226 Difference]: Without dead ends: 6556 [2024-10-12 15:17:37,819 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 15:17:37,821 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 203 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:37,821 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 66 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 15:17:37,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6556 states. [2024-10-12 15:17:37,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6556 to 6553. [2024-10-12 15:17:37,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6553 states, 6552 states have (on average 1.2455738705738706) internal successors, (8161), 6552 states have internal predecessors, (8161), 0 states have call successors, (0), 0 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 15:17:37,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6553 states to 6553 states and 8161 transitions. [2024-10-12 15:17:37,913 INFO L78 Accepts]: Start accepts. Automaton has 6553 states and 8161 transitions. Word has length 220 [2024-10-12 15:17:37,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:37,913 INFO L471 AbstractCegarLoop]: Abstraction has 6553 states and 8161 transitions. [2024-10-12 15:17:37,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 0 states have call successors, (0), 0 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 15:17:37,913 INFO L276 IsEmpty]: Start isEmpty. Operand 6553 states and 8161 transitions. [2024-10-12 15:17:37,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-10-12 15:17:37,921 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:37,921 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:37,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 15:17:37,921 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:37,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:37,922 INFO L85 PathProgramCache]: Analyzing trace with hash -394343191, now seen corresponding path program 1 times [2024-10-12 15:17:37,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:37,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797308423] [2024-10-12 15:17:37,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:37,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:38,447 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:17:38,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:38,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797308423] [2024-10-12 15:17:38,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797308423] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:38,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:17:38,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:17:38,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48352641] [2024-10-12 15:17:38,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:38,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 15:17:38,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:38,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 15:17:38,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:17:38,449 INFO L87 Difference]: Start difference. First operand 6553 states and 8161 transitions. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 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 15:17:39,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:39,433 INFO L93 Difference]: Finished difference Result 17066 states and 21122 transitions. [2024-10-12 15:17:39,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 15:17:39,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 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 223 [2024-10-12 15:17:39,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:39,463 INFO L225 Difference]: With dead ends: 17066 [2024-10-12 15:17:39,463 INFO L226 Difference]: Without dead ends: 9818 [2024-10-12 15:17:39,473 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:17:39,474 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 198 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:39,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 78 Invalid, 1183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 15:17:39,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9818 states. [2024-10-12 15:17:39,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9818 to 9817. [2024-10-12 15:17:39,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9817 states, 9816 states have (on average 1.2276894865525672) internal successors, (12051), 9816 states have internal predecessors, (12051), 0 states have call successors, (0), 0 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 15:17:39,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9817 states to 9817 states and 12051 transitions. [2024-10-12 15:17:39,608 INFO L78 Accepts]: Start accepts. Automaton has 9817 states and 12051 transitions. Word has length 223 [2024-10-12 15:17:39,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:39,609 INFO L471 AbstractCegarLoop]: Abstraction has 9817 states and 12051 transitions. [2024-10-12 15:17:39,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 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 15:17:39,609 INFO L276 IsEmpty]: Start isEmpty. Operand 9817 states and 12051 transitions. [2024-10-12 15:17:39,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-10-12 15:17:39,618 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:39,618 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:39,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 15:17:39,619 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:39,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:39,619 INFO L85 PathProgramCache]: Analyzing trace with hash 349578727, now seen corresponding path program 1 times [2024-10-12 15:17:39,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:39,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108767939] [2024-10-12 15:17:39,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:39,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:39,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:39,985 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:17:39,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:39,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108767939] [2024-10-12 15:17:39,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108767939] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:17:39,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071132615] [2024-10-12 15:17:39,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:39,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:17:39,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:17:39,989 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 15:17:39,992 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 15:17:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:40,141 INFO L255 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 15:17:40,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:17:40,383 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-12 15:17:40,383 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:17:40,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071132615] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:40,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:17:40,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-10-12 15:17:40,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400292567] [2024-10-12 15:17:40,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:40,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:17:40,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:40,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:17:40,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:17:40,385 INFO L87 Difference]: Start difference. First operand 9817 states and 12051 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:40,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:40,960 INFO L93 Difference]: Finished difference Result 29409 states and 36109 transitions. [2024-10-12 15:17:40,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:17:40,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 227 [2024-10-12 15:17:40,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:40,998 INFO L225 Difference]: With dead ends: 29409 [2024-10-12 15:17:40,998 INFO L226 Difference]: Without dead ends: 19593 [2024-10-12 15:17:41,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:17:41,011 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 56 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:41,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 128 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 15:17:41,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19593 states. [2024-10-12 15:17:41,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19593 to 19591. [2024-10-12 15:17:41,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19591 states, 19590 states have (on average 1.2013782542113323) internal successors, (23535), 19590 states have internal predecessors, (23535), 0 states have call successors, (0), 0 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 15:17:41,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19591 states to 19591 states and 23535 transitions. [2024-10-12 15:17:41,272 INFO L78 Accepts]: Start accepts. Automaton has 19591 states and 23535 transitions. Word has length 227 [2024-10-12 15:17:41,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:41,272 INFO L471 AbstractCegarLoop]: Abstraction has 19591 states and 23535 transitions. [2024-10-12 15:17:41,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:41,273 INFO L276 IsEmpty]: Start isEmpty. Operand 19591 states and 23535 transitions. [2024-10-12 15:17:41,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-10-12 15:17:41,287 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:41,287 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:41,301 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 15:17:41,488 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,SelfDestructingSolverStorable9 [2024-10-12 15:17:41,488 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:41,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:41,489 INFO L85 PathProgramCache]: Analyzing trace with hash 782953274, now seen corresponding path program 1 times [2024-10-12 15:17:41,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:41,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412626975] [2024-10-12 15:17:41,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:41,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:41,773 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:17:41,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:41,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412626975] [2024-10-12 15:17:41,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412626975] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:17:41,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275211045] [2024-10-12 15:17:41,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:41,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:17:41,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:17:41,776 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 15:17:41,777 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 15:17:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:41,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 15:17:41,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:17:42,136 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-12 15:17:42,137 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:17:42,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275211045] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:42,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:17:42,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-12 15:17:42,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952754016] [2024-10-12 15:17:42,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:42,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:17:42,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:42,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:17:42,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:17:42,138 INFO L87 Difference]: Start difference. First operand 19591 states and 23535 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 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 15:17:42,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:42,725 INFO L93 Difference]: Finished difference Result 39190 states and 47085 transitions. [2024-10-12 15:17:42,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:17:42,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 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 230 [2024-10-12 15:17:42,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:42,755 INFO L225 Difference]: With dead ends: 39190 [2024-10-12 15:17:42,755 INFO L226 Difference]: Without dead ends: 19600 [2024-10-12 15:17:42,773 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:17:42,774 INFO L432 NwaCegarLoop]: 307 mSDtfsCounter, 31 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:42,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 321 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 15:17:42,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19600 states. [2024-10-12 15:17:42,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19600 to 19591. [2024-10-12 15:17:42,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19591 states, 19590 states have (on average 1.1948443083205718) internal successors, (23407), 19590 states have internal predecessors, (23407), 0 states have call successors, (0), 0 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 15:17:43,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19591 states to 19591 states and 23407 transitions. [2024-10-12 15:17:43,111 INFO L78 Accepts]: Start accepts. Automaton has 19591 states and 23407 transitions. Word has length 230 [2024-10-12 15:17:43,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:43,112 INFO L471 AbstractCegarLoop]: Abstraction has 19591 states and 23407 transitions. [2024-10-12 15:17:43,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 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 15:17:43,113 INFO L276 IsEmpty]: Start isEmpty. Operand 19591 states and 23407 transitions. [2024-10-12 15:17:43,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-10-12 15:17:43,132 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:43,133 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:43,147 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 15:17:43,333 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,SelfDestructingSolverStorable10 [2024-10-12 15:17:43,334 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:43,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:43,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1538701920, now seen corresponding path program 1 times [2024-10-12 15:17:43,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:43,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132500416] [2024-10-12 15:17:43,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:43,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:43,711 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 68 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-12 15:17:43,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:43,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132500416] [2024-10-12 15:17:43,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132500416] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:17:43,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85265238] [2024-10-12 15:17:43,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:43,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:17:43,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:17:43,715 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 15:17:43,716 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 15:17:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:43,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 15:17:43,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:17:43,917 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 15:17:43,917 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:17:43,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85265238] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:43,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:17:43,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-12 15:17:43,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593650709] [2024-10-12 15:17:43,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:43,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:17:43,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:43,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:17:43,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:17:43,921 INFO L87 Difference]: Start difference. First operand 19591 states and 23407 transitions. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 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 15:17:44,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:44,605 INFO L93 Difference]: Finished difference Result 39187 states and 46823 transitions. [2024-10-12 15:17:44,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:17:44,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 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 258 [2024-10-12 15:17:44,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:44,640 INFO L225 Difference]: With dead ends: 39187 [2024-10-12 15:17:44,640 INFO L226 Difference]: Without dead ends: 19597 [2024-10-12 15:17:44,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:17:44,658 INFO L432 NwaCegarLoop]: 320 mSDtfsCounter, 188 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:44,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 339 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 15:17:44,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19597 states. [2024-10-12 15:17:44,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19597 to 19591. [2024-10-12 15:17:45,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19591 states, 19590 states have (on average 1.1253700867789689) internal successors, (22046), 19590 states have internal predecessors, (22046), 0 states have call successors, (0), 0 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 15:17:45,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19591 states to 19591 states and 22046 transitions. [2024-10-12 15:17:45,021 INFO L78 Accepts]: Start accepts. Automaton has 19591 states and 22046 transitions. Word has length 258 [2024-10-12 15:17:45,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:45,021 INFO L471 AbstractCegarLoop]: Abstraction has 19591 states and 22046 transitions. [2024-10-12 15:17:45,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 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 15:17:45,022 INFO L276 IsEmpty]: Start isEmpty. Operand 19591 states and 22046 transitions. [2024-10-12 15:17:45,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-10-12 15:17:45,035 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:45,036 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:45,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-12 15:17:45,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:17:45,237 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:45,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:45,237 INFO L85 PathProgramCache]: Analyzing trace with hash 525381652, now seen corresponding path program 2 times [2024-10-12 15:17:45,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:45,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559524922] [2024-10-12 15:17:45,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:45,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:45,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:45,521 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 71 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-12 15:17:45,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:45,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559524922] [2024-10-12 15:17:45,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559524922] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:17:45,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064699140] [2024-10-12 15:17:45,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 15:17:45,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:17:45,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:17:45,523 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 15:17:45,524 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 15:17:45,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 15:17:45,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 15:17:45,644 INFO L255 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 15:17:45,647 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:17:45,677 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 15:17:45,678 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:17:45,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064699140] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:45,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:17:45,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-12 15:17:45,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446980315] [2024-10-12 15:17:45,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:45,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:17:45,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:45,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:17:45,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:17:45,681 INFO L87 Difference]: Start difference. First operand 19591 states and 22046 transitions. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 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 15:17:46,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:46,170 INFO L93 Difference]: Finished difference Result 38973 states and 43805 transitions. [2024-10-12 15:17:46,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:17:46,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 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 258 [2024-10-12 15:17:46,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:46,269 INFO L225 Difference]: With dead ends: 38973 [2024-10-12 15:17:46,269 INFO L226 Difference]: Without dead ends: 19383 [2024-10-12 15:17:46,275 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:17:46,276 INFO L432 NwaCegarLoop]: 285 mSDtfsCounter, 211 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:46,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 299 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 15:17:46,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19383 states. [2024-10-12 15:17:46,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19383 to 19377. [2024-10-12 15:17:46,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19377 states, 19376 states have (on average 1.094498348472337) internal successors, (21207), 19376 states have internal predecessors, (21207), 0 states have call successors, (0), 0 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 15:17:46,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19377 states to 19377 states and 21207 transitions. [2024-10-12 15:17:46,460 INFO L78 Accepts]: Start accepts. Automaton has 19377 states and 21207 transitions. Word has length 258 [2024-10-12 15:17:46,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:46,460 INFO L471 AbstractCegarLoop]: Abstraction has 19377 states and 21207 transitions. [2024-10-12 15:17:46,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 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 15:17:46,460 INFO L276 IsEmpty]: Start isEmpty. Operand 19377 states and 21207 transitions. [2024-10-12 15:17:46,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-10-12 15:17:46,473 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:46,473 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:46,487 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 15:17:46,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:17:46,674 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:46,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:46,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1632467037, now seen corresponding path program 1 times [2024-10-12 15:17:46,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:46,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790528577] [2024-10-12 15:17:46,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:46,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:46,934 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-12 15:17:46,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:46,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790528577] [2024-10-12 15:17:46,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790528577] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:17:46,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318160853] [2024-10-12 15:17:46,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:46,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:17:46,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:17:46,936 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 15:17:46,937 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 15:17:47,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:47,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 15:17:47,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:17:47,286 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-10-12 15:17:47,286 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:17:47,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318160853] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:47,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:17:47,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-12 15:17:47,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131719430] [2024-10-12 15:17:47,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:47,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:17:47,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:47,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:17:47,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:17:47,288 INFO L87 Difference]: Start difference. First operand 19377 states and 21207 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 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 15:17:47,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:47,819 INFO L93 Difference]: Finished difference Result 54016 states and 59130 transitions. [2024-10-12 15:17:47,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:17:47,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 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 264 [2024-10-12 15:17:47,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:47,856 INFO L225 Difference]: With dead ends: 54016 [2024-10-12 15:17:47,857 INFO L226 Difference]: Without dead ends: 34640 [2024-10-12 15:17:47,876 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:17:47,876 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 37 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:47,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 121 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 15:17:47,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34640 states. [2024-10-12 15:17:48,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34640 to 26080. [2024-10-12 15:17:48,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26080 states, 26079 states have (on average 1.098700103531577) internal successors, (28653), 26079 states have internal predecessors, (28653), 0 states have call successors, (0), 0 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 15:17:48,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26080 states to 26080 states and 28653 transitions. [2024-10-12 15:17:48,230 INFO L78 Accepts]: Start accepts. Automaton has 26080 states and 28653 transitions. Word has length 264 [2024-10-12 15:17:48,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:48,231 INFO L471 AbstractCegarLoop]: Abstraction has 26080 states and 28653 transitions. [2024-10-12 15:17:48,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 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 15:17:48,232 INFO L276 IsEmpty]: Start isEmpty. Operand 26080 states and 28653 transitions. [2024-10-12 15:17:48,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2024-10-12 15:17:48,248 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:48,249 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:48,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 15:17:48,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-12 15:17:48,450 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:48,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:48,450 INFO L85 PathProgramCache]: Analyzing trace with hash -166199581, now seen corresponding path program 1 times [2024-10-12 15:17:48,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:48,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651967668] [2024-10-12 15:17:48,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:48,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:48,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:48,678 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:17:48,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:48,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651967668] [2024-10-12 15:17:48,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651967668] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:48,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:17:48,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:17:48,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179320780] [2024-10-12 15:17:48,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:48,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:17:48,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:48,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:17:48,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:17:48,680 INFO L87 Difference]: Start difference. First operand 26080 states and 28653 transitions. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 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 15:17:49,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:49,277 INFO L93 Difference]: Finished difference Result 50310 states and 55283 transitions. [2024-10-12 15:17:49,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:17:49,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 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 321 [2024-10-12 15:17:49,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:49,305 INFO L225 Difference]: With dead ends: 50310 [2024-10-12 15:17:49,305 INFO L226 Difference]: Without dead ends: 24231 [2024-10-12 15:17:49,324 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 15:17:49,325 INFO L432 NwaCegarLoop]: 298 mSDtfsCounter, 210 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:49,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 312 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 15:17:49,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24231 states. [2024-10-12 15:17:49,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24231 to 23619. [2024-10-12 15:17:49,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23619 states, 23618 states have (on average 1.079557964264544) internal successors, (25497), 23618 states have internal predecessors, (25497), 0 states have call successors, (0), 0 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 15:17:49,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23619 states to 23619 states and 25497 transitions. [2024-10-12 15:17:49,667 INFO L78 Accepts]: Start accepts. Automaton has 23619 states and 25497 transitions. Word has length 321 [2024-10-12 15:17:49,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:49,667 INFO L471 AbstractCegarLoop]: Abstraction has 23619 states and 25497 transitions. [2024-10-12 15:17:49,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 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 15:17:49,668 INFO L276 IsEmpty]: Start isEmpty. Operand 23619 states and 25497 transitions. [2024-10-12 15:17:49,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2024-10-12 15:17:49,687 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:49,688 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:49,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 15:17:49,688 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:49,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:49,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1772255890, now seen corresponding path program 1 times [2024-10-12 15:17:49,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:49,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622593601] [2024-10-12 15:17:49,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:49,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:50,056 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-10-12 15:17:50,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:50,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622593601] [2024-10-12 15:17:50,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622593601] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:50,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:17:50,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:17:50,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167205629] [2024-10-12 15:17:50,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:50,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 15:17:50,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:50,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 15:17:50,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:17:50,058 INFO L87 Difference]: Start difference. First operand 23619 states and 25497 transitions. Second operand has 4 states, 4 states have (on average 74.0) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:50,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:50,917 INFO L93 Difference]: Finished difference Result 58426 states and 63067 transitions. [2024-10-12 15:17:50,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 15:17:50,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.0) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 333 [2024-10-12 15:17:50,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:50,956 INFO L225 Difference]: With dead ends: 58426 [2024-10-12 15:17:50,956 INFO L226 Difference]: Without dead ends: 34808 [2024-10-12 15:17:50,975 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:17:50,975 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 341 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:50,976 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 120 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 15:17:50,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34808 states. [2024-10-12 15:17:51,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34808 to 34193. [2024-10-12 15:17:51,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34193 states, 34192 states have (on average 1.0688465138043988) internal successors, (36546), 34192 states have internal predecessors, (36546), 0 states have call successors, (0), 0 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 15:17:51,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34193 states to 34193 states and 36546 transitions. [2024-10-12 15:17:51,403 INFO L78 Accepts]: Start accepts. Automaton has 34193 states and 36546 transitions. Word has length 333 [2024-10-12 15:17:51,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:51,404 INFO L471 AbstractCegarLoop]: Abstraction has 34193 states and 36546 transitions. [2024-10-12 15:17:51,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.0) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:17:51,404 INFO L276 IsEmpty]: Start isEmpty. Operand 34193 states and 36546 transitions. [2024-10-12 15:17:51,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2024-10-12 15:17:51,421 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:51,422 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:51,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-12 15:17:51,422 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:51,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:51,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1755304509, now seen corresponding path program 1 times [2024-10-12 15:17:51,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:51,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496368234] [2024-10-12 15:17:51,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:51,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:51,730 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-10-12 15:17:51,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:51,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496368234] [2024-10-12 15:17:51,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496368234] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:17:51,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465894637] [2024-10-12 15:17:51,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:51,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:17:51,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:17:51,732 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:17:51,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 15:17:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:51,870 INFO L255 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 15:17:51,875 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:17:52,004 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 145 proven. 37 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 15:17:52,004 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 15:17:52,135 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 145 proven. 37 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 15:17:52,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465894637] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 15:17:52,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 15:17:52,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-10-12 15:17:52,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209404764] [2024-10-12 15:17:52,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 15:17:52,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 15:17:52,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:52,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 15:17:52,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 15:17:52,137 INFO L87 Difference]: Start difference. First operand 34193 states and 36546 transitions. Second operand has 6 states, 6 states have (on average 62.0) internal successors, (372), 5 states have internal predecessors, (372), 0 states have call successors, (0), 0 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 15:17:53,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:53,887 INFO L93 Difference]: Finished difference Result 106846 states and 114555 transitions. [2024-10-12 15:17:53,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 15:17:53,888 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 62.0) internal successors, (372), 5 states have internal predecessors, (372), 0 states have call successors, (0), 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 338 [2024-10-12 15:17:53,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:53,985 INFO L225 Difference]: With dead ends: 106846 [2024-10-12 15:17:53,985 INFO L226 Difference]: Without dead ends: 72654 [2024-10-12 15:17:54,020 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 673 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-12 15:17:54,021 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 1857 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 2040 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1857 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 2429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 2040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:54,021 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1857 Valid, 155 Invalid, 2429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 2040 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-12 15:17:54,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72654 states. [2024-10-12 15:17:54,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72654 to 72228. [2024-10-12 15:17:54,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72228 states, 72227 states have (on average 1.0705830229692497) internal successors, (77325), 72227 states have internal predecessors, (77325), 0 states have call successors, (0), 0 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 15:17:55,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72228 states to 72228 states and 77325 transitions. [2024-10-12 15:17:55,002 INFO L78 Accepts]: Start accepts. Automaton has 72228 states and 77325 transitions. Word has length 338 [2024-10-12 15:17:55,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:55,002 INFO L471 AbstractCegarLoop]: Abstraction has 72228 states and 77325 transitions. [2024-10-12 15:17:55,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 62.0) internal successors, (372), 5 states have internal predecessors, (372), 0 states have call successors, (0), 0 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 15:17:55,002 INFO L276 IsEmpty]: Start isEmpty. Operand 72228 states and 77325 transitions. [2024-10-12 15:17:55,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2024-10-12 15:17:55,040 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:55,040 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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 15:17:55,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-12 15:17:55,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-12 15:17:55,241 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:55,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:55,241 INFO L85 PathProgramCache]: Analyzing trace with hash 8217942, now seen corresponding path program 1 times [2024-10-12 15:17:55,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:55,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123113378] [2024-10-12 15:17:55,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:55,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:55,492 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2024-10-12 15:17:55,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:55,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123113378] [2024-10-12 15:17:55,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123113378] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:55,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:17:55,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:17:55,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420348388] [2024-10-12 15:17:55,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:55,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:17:55,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:55,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:17:55,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:17:55,495 INFO L87 Difference]: Start difference. First operand 72228 states and 77325 transitions. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 2 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 15:17:56,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:17:56,316 INFO L93 Difference]: Finished difference Result 215052 states and 230283 transitions. [2024-10-12 15:17:56,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:17:56,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 2 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) Word has length 423 [2024-10-12 15:17:56,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:17:56,478 INFO L225 Difference]: With dead ends: 215052 [2024-10-12 15:17:56,478 INFO L226 Difference]: Without dead ends: 142825 [2024-10-12 15:17:56,536 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 15:17:56,537 INFO L432 NwaCegarLoop]: 249 mSDtfsCounter, 185 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 15:17:56,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 485 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 15:17:56,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142825 states. [2024-10-12 15:17:58,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142825 to 142819. [2024-10-12 15:17:58,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142819 states, 142818 states have (on average 1.070698371353751) internal successors, (152915), 142818 states have internal predecessors, (152915), 0 states have call successors, (0), 0 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 15:17:59,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142819 states to 142819 states and 152915 transitions. [2024-10-12 15:17:59,159 INFO L78 Accepts]: Start accepts. Automaton has 142819 states and 152915 transitions. Word has length 423 [2024-10-12 15:17:59,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:17:59,159 INFO L471 AbstractCegarLoop]: Abstraction has 142819 states and 152915 transitions. [2024-10-12 15:17:59,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 2 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 15:17:59,159 INFO L276 IsEmpty]: Start isEmpty. Operand 142819 states and 152915 transitions. [2024-10-12 15:17:59,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2024-10-12 15:17:59,198 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:17:59,198 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 15:17:59,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-12 15:17:59,199 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:17:59,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:17:59,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1134183281, now seen corresponding path program 1 times [2024-10-12 15:17:59,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:17:59,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534588631] [2024-10-12 15:17:59,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:17:59,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:17:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:17:59,913 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 281 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-10-12 15:17:59,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:17:59,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534588631] [2024-10-12 15:17:59,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534588631] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:17:59,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:17:59,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:17:59,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671771365] [2024-10-12 15:17:59,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:17:59,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 15:17:59,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:17:59,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 15:17:59,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:17:59,915 INFO L87 Difference]: Start difference. First operand 142819 states and 152915 transitions. Second operand has 4 states, 4 states have (on average 87.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 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 15:18:01,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:18:01,576 INFO L93 Difference]: Finished difference Result 419099 states and 448935 transitions. [2024-10-12 15:18:01,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 15:18:01,577 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 87.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 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 425 [2024-10-12 15:18:01,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:18:01,964 INFO L225 Difference]: With dead ends: 419099 [2024-10-12 15:18:01,964 INFO L226 Difference]: Without dead ends: 276281 [2024-10-12 15:18:02,058 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:18:02,059 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 428 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 15:18:02,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 43 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 15:18:02,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276281 states. [2024-10-12 15:18:05,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276281 to 276275. [2024-10-12 15:18:06,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276275 states, 276274 states have (on average 1.0707956593816284) internal successors, (295833), 276274 states have internal predecessors, (295833), 0 states have call successors, (0), 0 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 15:18:06,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276275 states to 276275 states and 295833 transitions. [2024-10-12 15:18:06,871 INFO L78 Accepts]: Start accepts. Automaton has 276275 states and 295833 transitions. Word has length 425 [2024-10-12 15:18:06,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:18:06,871 INFO L471 AbstractCegarLoop]: Abstraction has 276275 states and 295833 transitions. [2024-10-12 15:18:06,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 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 15:18:06,871 INFO L276 IsEmpty]: Start isEmpty. Operand 276275 states and 295833 transitions. [2024-10-12 15:18:06,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2024-10-12 15:18:06,907 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:18:06,907 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:18:06,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-12 15:18:06,907 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:18:06,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:18:06,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1913697779, now seen corresponding path program 1 times [2024-10-12 15:18:06,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:18:06,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159712813] [2024-10-12 15:18:06,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:06,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:18:06,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:07,585 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 136 proven. 6 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2024-10-12 15:18:07,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:18:07,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159712813] [2024-10-12 15:18:07,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159712813] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:18:07,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193884839] [2024-10-12 15:18:07,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:07,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:18:07,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:18:07,587 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:18:07,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 15:18:07,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:07,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 15:18:07,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:18:07,989 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2024-10-12 15:18:07,989 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:18:07,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193884839] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:18:07,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:18:07,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-10-12 15:18:07,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765679580] [2024-10-12 15:18:07,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:18:07,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:18:07,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:18:07,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:18:07,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:18:07,991 INFO L87 Difference]: Start difference. First operand 276275 states and 295833 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 2 states have internal predecessors, (305), 0 states have call successors, (0), 0 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 15:18:10,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:18:10,602 INFO L93 Difference]: Finished difference Result 708636 states and 762149 transitions. [2024-10-12 15:18:10,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:18:10,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 2 states have internal predecessors, (305), 0 states have call successors, (0), 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 443 [2024-10-12 15:18:10,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:18:11,321 INFO L225 Difference]: With dead ends: 708636 [2024-10-12 15:18:11,321 INFO L226 Difference]: Without dead ends: 432362 [2024-10-12 15:18:11,541 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:18:11,542 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 145 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 15:18:11,542 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 92 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 15:18:12,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432362 states. [2024-10-12 15:18:18,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432362 to 426419. [2024-10-12 15:18:18,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426419 states, 426418 states have (on average 1.0695983753031064) internal successors, (456096), 426418 states have internal predecessors, (456096), 0 states have call successors, (0), 0 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 15:18:19,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426419 states to 426419 states and 456096 transitions. [2024-10-12 15:18:19,537 INFO L78 Accepts]: Start accepts. Automaton has 426419 states and 456096 transitions. Word has length 443 [2024-10-12 15:18:19,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:18:19,538 INFO L471 AbstractCegarLoop]: Abstraction has 426419 states and 456096 transitions. [2024-10-12 15:18:19,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 2 states have internal predecessors, (305), 0 states have call successors, (0), 0 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 15:18:19,538 INFO L276 IsEmpty]: Start isEmpty. Operand 426419 states and 456096 transitions. [2024-10-12 15:18:19,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2024-10-12 15:18:19,592 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:18:19,592 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2024-10-12 15:18:19,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-12 15:18:19,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:18:19,793 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:18:19,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:18:19,793 INFO L85 PathProgramCache]: Analyzing trace with hash -476345776, now seen corresponding path program 1 times [2024-10-12 15:18:19,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:18:19,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950038813] [2024-10-12 15:18:19,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:19,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:18:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:20,660 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 275 proven. 9 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-10-12 15:18:20,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:18:20,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950038813] [2024-10-12 15:18:20,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950038813] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:18:20,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7432901] [2024-10-12 15:18:20,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:18:20,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:18:20,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:18:20,662 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:18:20,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 15:18:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:18:20,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 15:18:20,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:18:20,923 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2024-10-12 15:18:20,923 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:18:20,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7432901] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:18:20,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:18:20,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-12 15:18:20,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088526612] [2024-10-12 15:18:20,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:18:20,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:18:20,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:18:20,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:18:20,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 15:18:20,925 INFO L87 Difference]: Start difference. First operand 426419 states and 456096 transitions. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 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 15:18:24,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:18:24,259 INFO L93 Difference]: Finished difference Result 861602 states and 921543 transitions. [2024-10-12 15:18:24,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:18:24,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 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 446 [2024-10-12 15:18:24,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:18:24,920 INFO L225 Difference]: With dead ends: 861602 [2024-10-12 15:18:24,920 INFO L226 Difference]: Without dead ends: 435184 [2024-10-12 15:18:25,118 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 15:18:25,119 INFO L432 NwaCegarLoop]: 330 mSDtfsCounter, 210 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 15:18:25,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 345 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 15:18:25,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435184 states.