./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/Problem11_label55.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 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/Problem11_label55.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 3ed93fbea5c4ce7662a30833852408f6a41bed2c847c0002d827dceaca299880 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 21:03:56,929 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 21:03:57,000 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 21:03:57,005 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 21:03:57,006 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 21:03:57,052 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 21:03:57,055 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 21:03:57,055 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 21:03:57,056 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 21:03:57,057 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 21:03:57,058 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 21:03:57,058 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 21:03:57,059 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 21:03:57,060 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 21:03:57,061 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 21:03:57,061 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 21:03:57,061 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 21:03:57,064 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 21:03:57,065 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 21:03:57,065 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 21:03:57,065 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 21:03:57,066 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 21:03:57,066 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 21:03:57,066 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 21:03:57,066 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 21:03:57,067 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 21:03:57,067 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 21:03:57,067 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 21:03:57,068 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 21:03:57,068 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 21:03:57,068 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 21:03:57,068 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 21:03:57,069 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:03:57,069 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 21:03:57,069 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 21:03:57,070 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 21:03:57,070 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 21:03:57,070 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 21:03:57,070 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 21:03:57,071 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 21:03:57,071 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 21:03:57,072 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 21:03:57,073 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ed93fbea5c4ce7662a30833852408f6a41bed2c847c0002d827dceaca299880 [2024-10-23 21:03:57,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 21:03:57,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 21:03:57,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 21:03:57,346 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 21:03:57,346 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 21:03:57,347 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label55.c [2024-10-23 21:03:58,819 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 21:03:59,152 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 21:03:59,153 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label55.c [2024-10-23 21:03:59,171 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce4e9cb2e/05cb39ab96e345549edae513ed25d53d/FLAG65de1ac6b [2024-10-23 21:03:59,186 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce4e9cb2e/05cb39ab96e345549edae513ed25d53d [2024-10-23 21:03:59,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 21:03:59,190 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 21:03:59,191 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 21:03:59,191 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 21:03:59,197 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 21:03:59,197 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:03:59" (1/1) ... [2024-10-23 21:03:59,198 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7446adc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:59, skipping insertion in model container [2024-10-23 21:03:59,198 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:03:59" (1/1) ... [2024-10-23 21:03:59,250 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 21:03:59,499 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/Problem11_label55.c[6546,6559] [2024-10-23 21:03:59,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:03:59,685 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 21:03:59,715 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/Problem11_label55.c[6546,6559] [2024-10-23 21:03:59,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:03:59,897 INFO L204 MainTranslator]: Completed translation [2024-10-23 21:03:59,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:59 WrapperNode [2024-10-23 21:03:59,898 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 21:03:59,899 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 21:03:59,900 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 21:03:59,900 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 21:03:59,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:59" (1/1) ... [2024-10-23 21:03:59,938 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:59" (1/1) ... [2024-10-23 21:04:00,046 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1000 [2024-10-23 21:04:00,047 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 21:04:00,048 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 21:04:00,048 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 21:04:00,048 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 21:04:00,058 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:59" (1/1) ... [2024-10-23 21:04:00,058 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:59" (1/1) ... [2024-10-23 21:04:00,073 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:59" (1/1) ... [2024-10-23 21:04:00,199 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]. [2024-10-23 21:04:00,200 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:59" (1/1) ... [2024-10-23 21:04:00,200 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:59" (1/1) ... [2024-10-23 21:04:00,261 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:59" (1/1) ... [2024-10-23 21:04:00,271 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:59" (1/1) ... [2024-10-23 21:04:00,287 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:59" (1/1) ... [2024-10-23 21:04:00,296 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:59" (1/1) ... [2024-10-23 21:04:00,309 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 21:04:00,310 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 21:04:00,311 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 21:04:00,311 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 21:04:00,312 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:59" (1/1) ... [2024-10-23 21:04:00,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:04:00,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:04:00,347 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) [2024-10-23 21:04:00,351 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 [2024-10-23 21:04:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 21:04:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 21:04:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 21:04:00,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 21:04:00,470 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 21:04:00,473 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 21:04:02,022 INFO L? ?]: Removed 129 outVars from TransFormulas that were not future-live. [2024-10-23 21:04:02,023 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 21:04:02,080 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 21:04:02,081 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 21:04:02,081 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:04:02 BoogieIcfgContainer [2024-10-23 21:04:02,082 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 21:04:02,083 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 21:04:02,083 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 21:04:02,087 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 21:04:02,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:03:59" (1/3) ... [2024-10-23 21:04:02,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235ace28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:04:02, skipping insertion in model container [2024-10-23 21:04:02,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:03:59" (2/3) ... [2024-10-23 21:04:02,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235ace28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:04:02, skipping insertion in model container [2024-10-23 21:04:02,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:04:02" (3/3) ... [2024-10-23 21:04:02,090 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label55.c [2024-10-23 21:04:02,107 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 21:04:02,107 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 21:04:02,193 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 21:04:02,199 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;@4d1ed3ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 21:04:02,199 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 21:04:02,205 INFO L276 IsEmpty]: Start isEmpty. Operand has 221 states, 219 states have (on average 1.917808219178082) internal successors, (420), 220 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:02,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-10-23 21:04:02,210 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:02,211 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:04:02,211 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:02,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:02,215 INFO L85 PathProgramCache]: Analyzing trace with hash -77772250, now seen corresponding path program 1 times [2024-10-23 21:04:02,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:02,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641617297] [2024-10-23 21:04:02,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:02,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:02,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:04:02,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:02,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641617297] [2024-10-23 21:04:02,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641617297] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:02,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:04:02,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:04:02,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19169429] [2024-10-23 21:04:02,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:02,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 21:04:02,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:02,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 21:04:02,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:04:02,448 INFO L87 Difference]: Start difference. First operand has 221 states, 219 states have (on average 1.917808219178082) internal successors, (420), 220 states have internal predecessors, (420), 0 states have call successors, (0), 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 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:02,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:04:02,498 INFO L93 Difference]: Finished difference Result 441 states and 839 transitions. [2024-10-23 21:04:02,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 21:04:02,506 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-10-23 21:04:02,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:04:02,516 INFO L225 Difference]: With dead ends: 441 [2024-10-23 21:04:02,516 INFO L226 Difference]: Without dead ends: 219 [2024-10-23 21:04:02,520 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 [2024-10-23 21:04:02,523 INFO L432 NwaCegarLoop]: 355 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, 355 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 [2024-10-23 21:04:02,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 21:04:02,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-10-23 21:04:02,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2024-10-23 21:04:02,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.628440366972477) internal successors, (355), 218 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:02,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 355 transitions. [2024-10-23 21:04:02,571 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 355 transitions. Word has length 44 [2024-10-23 21:04:02,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:04:02,571 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 355 transitions. [2024-10-23 21:04:02,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:02,572 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 355 transitions. [2024-10-23 21:04:02,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-10-23 21:04:02,573 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:02,573 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:04:02,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 21:04:02,574 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:02,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:02,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1962492454, now seen corresponding path program 1 times [2024-10-23 21:04:02,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:02,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353345130] [2024-10-23 21:04:02,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:02,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:02,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:04:02,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:02,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353345130] [2024-10-23 21:04:02,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353345130] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:02,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:04:02,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:04:02,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296800913] [2024-10-23 21:04:02,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:02,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:04:02,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:02,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:04:02,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:04:02,820 INFO L87 Difference]: Start difference. First operand 219 states and 355 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:03,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:04:03,717 INFO L93 Difference]: Finished difference Result 630 states and 1029 transitions. [2024-10-23 21:04:03,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:04:03,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-10-23 21:04:03,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:04:03,722 INFO L225 Difference]: With dead ends: 630 [2024-10-23 21:04:03,722 INFO L226 Difference]: Without dead ends: 412 [2024-10-23 21:04:03,723 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 [2024-10-23 21:04:03,724 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 163 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:04:03,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 144 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-23 21:04:03,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2024-10-23 21:04:03,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 410. [2024-10-23 21:04:03,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 1.4596577017114913) internal successors, (597), 409 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:03,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 597 transitions. [2024-10-23 21:04:03,750 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 597 transitions. Word has length 44 [2024-10-23 21:04:03,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:04:03,750 INFO L471 AbstractCegarLoop]: Abstraction has 410 states and 597 transitions. [2024-10-23 21:04:03,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:03,751 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 597 transitions. [2024-10-23 21:04:03,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-23 21:04:03,754 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:03,754 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, 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] [2024-10-23 21:04:03,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 21:04:03,756 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:03,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:03,757 INFO L85 PathProgramCache]: Analyzing trace with hash -2139669779, now seen corresponding path program 1 times [2024-10-23 21:04:03,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:03,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215997777] [2024-10-23 21:04:03,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:03,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:04,007 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:04:04,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:04,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215997777] [2024-10-23 21:04:04,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215997777] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:04,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:04:04,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:04:04,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955660153] [2024-10-23 21:04:04,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:04,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:04:04,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:04,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:04:04,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:04:04,010 INFO L87 Difference]: Start difference. First operand 410 states and 597 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:04,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:04:04,773 INFO L93 Difference]: Finished difference Result 1208 states and 1764 transitions. [2024-10-23 21:04:04,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:04:04,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2024-10-23 21:04:04,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:04:04,778 INFO L225 Difference]: With dead ends: 1208 [2024-10-23 21:04:04,778 INFO L226 Difference]: Without dead ends: 799 [2024-10-23 21:04:04,780 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 [2024-10-23 21:04:04,782 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 144 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:04:04,782 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 118 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 21:04:04,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2024-10-23 21:04:04,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 786. [2024-10-23 21:04:04,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 785 states have (on average 1.3859872611464967) internal successors, (1088), 785 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:04,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1088 transitions. [2024-10-23 21:04:04,814 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1088 transitions. Word has length 112 [2024-10-23 21:04:04,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:04:04,815 INFO L471 AbstractCegarLoop]: Abstraction has 786 states and 1088 transitions. [2024-10-23 21:04:04,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:04,815 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1088 transitions. [2024-10-23 21:04:04,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-10-23 21:04:04,819 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:04,819 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, 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] [2024-10-23 21:04:04,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 21:04:04,819 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:04,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:04,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1410466957, now seen corresponding path program 1 times [2024-10-23 21:04:04,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:04,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363993700] [2024-10-23 21:04:04,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:04,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:05,255 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:04:05,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:05,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363993700] [2024-10-23 21:04:05,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363993700] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:05,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:04:05,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:04:05,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934526071] [2024-10-23 21:04:05,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:05,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:04:05,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:05,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:04:05,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:04:05,260 INFO L87 Difference]: Start difference. First operand 786 states and 1088 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:05,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:04:05,910 INFO L93 Difference]: Finished difference Result 1941 states and 2630 transitions. [2024-10-23 21:04:05,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:04:05,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2024-10-23 21:04:05,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:04:05,915 INFO L225 Difference]: With dead ends: 1941 [2024-10-23 21:04:05,915 INFO L226 Difference]: Without dead ends: 1156 [2024-10-23 21:04:05,917 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 [2024-10-23 21:04:05,918 INFO L432 NwaCegarLoop]: 166 mSDtfsCounter, 120 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:04:05,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 188 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 21:04:05,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2024-10-23 21:04:05,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 1155. [2024-10-23 21:04:05,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1154 states have (on average 1.2781629116117852) internal successors, (1475), 1154 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:05,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1475 transitions. [2024-10-23 21:04:05,937 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1475 transitions. Word has length 113 [2024-10-23 21:04:05,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:04:05,938 INFO L471 AbstractCegarLoop]: Abstraction has 1155 states and 1475 transitions. [2024-10-23 21:04:05,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:05,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1475 transitions. [2024-10-23 21:04:05,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-10-23 21:04:05,942 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:05,942 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, 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] [2024-10-23 21:04:05,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 21:04:05,943 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:05,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:05,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1554399401, now seen corresponding path program 1 times [2024-10-23 21:04:05,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:05,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660241583] [2024-10-23 21:04:05,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:05,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:06,193 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-23 21:04:06,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:06,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660241583] [2024-10-23 21:04:06,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660241583] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:06,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:04:06,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:04:06,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567757044] [2024-10-23 21:04:06,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:06,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:04:06,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:06,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:04:06,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:04:06,199 INFO L87 Difference]: Start difference. First operand 1155 states and 1475 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:06,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:04:06,959 INFO L93 Difference]: Finished difference Result 2501 states and 3338 transitions. [2024-10-23 21:04:06,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:04:06,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 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 156 [2024-10-23 21:04:06,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:04:06,965 INFO L225 Difference]: With dead ends: 2501 [2024-10-23 21:04:06,965 INFO L226 Difference]: Without dead ends: 1531 [2024-10-23 21:04:06,967 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 [2024-10-23 21:04:06,968 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 108 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:04:06,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 154 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 21:04:06,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2024-10-23 21:04:06,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1531. [2024-10-23 21:04:06,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1530 states have (on average 1.2620915032679738) internal successors, (1931), 1530 states have internal predecessors, (1931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:06,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 1931 transitions. [2024-10-23 21:04:06,992 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 1931 transitions. Word has length 156 [2024-10-23 21:04:06,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:04:06,993 INFO L471 AbstractCegarLoop]: Abstraction has 1531 states and 1931 transitions. [2024-10-23 21:04:06,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:06,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 1931 transitions. [2024-10-23 21:04:06,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-23 21:04:06,995 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:06,996 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, 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] [2024-10-23 21:04:06,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 21:04:06,996 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:06,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:06,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1494820296, now seen corresponding path program 1 times [2024-10-23 21:04:06,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:06,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849885562] [2024-10-23 21:04:06,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:06,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:07,213 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:04:07,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:07,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849885562] [2024-10-23 21:04:07,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849885562] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:07,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:04:07,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:04:07,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64113186] [2024-10-23 21:04:07,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:07,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:04:07,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:07,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:04:07,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:04:07,216 INFO L87 Difference]: Start difference. First operand 1531 states and 1931 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:07,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:04:07,919 INFO L93 Difference]: Finished difference Result 3643 states and 4737 transitions. [2024-10-23 21:04:07,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:04:07,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2024-10-23 21:04:07,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:04:07,931 INFO L225 Difference]: With dead ends: 3643 [2024-10-23 21:04:07,931 INFO L226 Difference]: Without dead ends: 2297 [2024-10-23 21:04:07,934 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 [2024-10-23 21:04:07,935 INFO L432 NwaCegarLoop]: 288 mSDtfsCounter, 190 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:04:07,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 319 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 21:04:07,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2024-10-23 21:04:07,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 2294. [2024-10-23 21:04:07,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2294 states, 2293 states have (on average 1.2655909289140863) internal successors, (2902), 2293 states have internal predecessors, (2902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:07,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2294 states to 2294 states and 2902 transitions. [2024-10-23 21:04:07,981 INFO L78 Accepts]: Start accepts. Automaton has 2294 states and 2902 transitions. Word has length 171 [2024-10-23 21:04:07,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:04:07,982 INFO L471 AbstractCegarLoop]: Abstraction has 2294 states and 2902 transitions. [2024-10-23 21:04:07,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:07,982 INFO L276 IsEmpty]: Start isEmpty. Operand 2294 states and 2902 transitions. [2024-10-23 21:04:07,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-10-23 21:04:07,987 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:07,987 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:04:07,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 21:04:07,988 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:07,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:07,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1153325072, now seen corresponding path program 1 times [2024-10-23 21:04:07,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:07,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571954076] [2024-10-23 21:04:07,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:07,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:08,259 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:04:08,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:08,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571954076] [2024-10-23 21:04:08,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571954076] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:08,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:04:08,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:04:08,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406689455] [2024-10-23 21:04:08,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:08,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:04:08,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:08,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:04:08,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:04:08,262 INFO L87 Difference]: Start difference. First operand 2294 states and 2902 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:09,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:04:09,010 INFO L93 Difference]: Finished difference Result 5527 states and 7094 transitions. [2024-10-23 21:04:09,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:04:09,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 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 224 [2024-10-23 21:04:09,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:04:09,022 INFO L225 Difference]: With dead ends: 5527 [2024-10-23 21:04:09,022 INFO L226 Difference]: Without dead ends: 3418 [2024-10-23 21:04:09,025 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 [2024-10-23 21:04:09,026 INFO L432 NwaCegarLoop]: 317 mSDtfsCounter, 136 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:04:09,027 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 337 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 21:04:09,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3418 states. [2024-10-23 21:04:09,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3418 to 3217. [2024-10-23 21:04:09,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3217 states, 3216 states have (on average 1.2378731343283582) internal successors, (3981), 3216 states have internal predecessors, (3981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:09,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3217 states to 3217 states and 3981 transitions. [2024-10-23 21:04:09,096 INFO L78 Accepts]: Start accepts. Automaton has 3217 states and 3981 transitions. Word has length 224 [2024-10-23 21:04:09,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:04:09,097 INFO L471 AbstractCegarLoop]: Abstraction has 3217 states and 3981 transitions. [2024-10-23 21:04:09,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:09,097 INFO L276 IsEmpty]: Start isEmpty. Operand 3217 states and 3981 transitions. [2024-10-23 21:04:09,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-10-23 21:04:09,101 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:09,101 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:04:09,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 21:04:09,101 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:09,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:09,102 INFO L85 PathProgramCache]: Analyzing trace with hash -898552112, now seen corresponding path program 1 times [2024-10-23 21:04:09,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:09,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171435389] [2024-10-23 21:04:09,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:09,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:09,385 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-23 21:04:09,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:09,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171435389] [2024-10-23 21:04:09,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171435389] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:09,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:04:09,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:04:09,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898430043] [2024-10-23 21:04:09,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:09,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:04:09,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:09,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:04:09,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:04:09,389 INFO L87 Difference]: Start difference. First operand 3217 states and 3981 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:10,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:04:10,118 INFO L93 Difference]: Finished difference Result 7370 states and 9142 transitions. [2024-10-23 21:04:10,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:04:10,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 225 [2024-10-23 21:04:10,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:04:10,131 INFO L225 Difference]: With dead ends: 7370 [2024-10-23 21:04:10,132 INFO L226 Difference]: Without dead ends: 4154 [2024-10-23 21:04:10,135 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 [2024-10-23 21:04:10,136 INFO L432 NwaCegarLoop]: 322 mSDtfsCounter, 157 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:04:10,136 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 342 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 21:04:10,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4154 states. [2024-10-23 21:04:10,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4154 to 4137. [2024-10-23 21:04:10,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4137 states, 4136 states have (on average 1.2212282398452612) internal successors, (5051), 4136 states have internal predecessors, (5051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:10,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4137 states to 4137 states and 5051 transitions. [2024-10-23 21:04:10,196 INFO L78 Accepts]: Start accepts. Automaton has 4137 states and 5051 transitions. Word has length 225 [2024-10-23 21:04:10,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:04:10,196 INFO L471 AbstractCegarLoop]: Abstraction has 4137 states and 5051 transitions. [2024-10-23 21:04:10,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:10,197 INFO L276 IsEmpty]: Start isEmpty. Operand 4137 states and 5051 transitions. [2024-10-23 21:04:10,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-10-23 21:04:10,199 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:10,199 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:04:10,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 21:04:10,200 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:10,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:10,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1504292747, now seen corresponding path program 1 times [2024-10-23 21:04:10,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:10,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322765972] [2024-10-23 21:04:10,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:10,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:10,399 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-10-23 21:04:10,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:10,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322765972] [2024-10-23 21:04:10,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322765972] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:10,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:04:10,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:04:10,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688441774] [2024-10-23 21:04:10,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:10,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:04:10,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:10,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:04:10,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:04:10,401 INFO L87 Difference]: Start difference. First operand 4137 states and 5051 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:11,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:04:11,201 INFO L93 Difference]: Finished difference Result 9206 states and 11352 transitions. [2024-10-23 21:04:11,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:04:11,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 226 [2024-10-23 21:04:11,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:04:11,216 INFO L225 Difference]: With dead ends: 9206 [2024-10-23 21:04:11,217 INFO L226 Difference]: Without dead ends: 5070 [2024-10-23 21:04:11,221 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 [2024-10-23 21:04:11,222 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 152 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:04:11,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 376 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 21:04:11,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5070 states. [2024-10-23 21:04:11,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5070 to 4873. [2024-10-23 21:04:11,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4873 states, 4872 states have (on average 1.208743842364532) internal successors, (5889), 4872 states have internal predecessors, (5889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:11,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4873 states to 4873 states and 5889 transitions. [2024-10-23 21:04:11,301 INFO L78 Accepts]: Start accepts. Automaton has 4873 states and 5889 transitions. Word has length 226 [2024-10-23 21:04:11,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:04:11,302 INFO L471 AbstractCegarLoop]: Abstraction has 4873 states and 5889 transitions. [2024-10-23 21:04:11,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:11,302 INFO L276 IsEmpty]: Start isEmpty. Operand 4873 states and 5889 transitions. [2024-10-23 21:04:11,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-10-23 21:04:11,305 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:11,306 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:04:11,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-23 21:04:11,306 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:11,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:11,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1094529447, now seen corresponding path program 1 times [2024-10-23 21:04:11,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:11,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803321657] [2024-10-23 21:04:11,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:11,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:11,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:11,746 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:04:11,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:11,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803321657] [2024-10-23 21:04:11,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803321657] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:11,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:04:11,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:04:11,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085970293] [2024-10-23 21:04:11,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:11,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:04:11,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:11,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:04:11,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:04:11,749 INFO L87 Difference]: Start difference. First operand 4873 states and 5889 transitions. Second operand has 4 states, 4 states have (on average 61.5) internal successors, (246), 4 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:12,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:04:12,940 INFO L93 Difference]: Finished difference Result 15869 states and 19334 transitions. [2024-10-23 21:04:12,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:04:12,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 61.5) internal successors, (246), 4 states have internal predecessors, (246), 0 states have call successors, (0), 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 246 [2024-10-23 21:04:12,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:04:12,973 INFO L225 Difference]: With dead ends: 15869 [2024-10-23 21:04:12,973 INFO L226 Difference]: Without dead ends: 10997 [2024-10-23 21:04:12,982 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:04:12,983 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 289 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:04:12,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 190 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-23 21:04:12,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10997 states. [2024-10-23 21:04:13,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10997 to 8952. [2024-10-23 21:04:13,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8952 states, 8951 states have (on average 1.190816668528656) internal successors, (10659), 8951 states have internal predecessors, (10659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:13,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8952 states to 8952 states and 10659 transitions. [2024-10-23 21:04:13,186 INFO L78 Accepts]: Start accepts. Automaton has 8952 states and 10659 transitions. Word has length 246 [2024-10-23 21:04:13,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:04:13,187 INFO L471 AbstractCegarLoop]: Abstraction has 8952 states and 10659 transitions. [2024-10-23 21:04:13,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.5) internal successors, (246), 4 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:13,188 INFO L276 IsEmpty]: Start isEmpty. Operand 8952 states and 10659 transitions. [2024-10-23 21:04:13,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-10-23 21:04:13,200 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:13,201 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:04:13,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-23 21:04:13,201 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:13,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:13,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1960056512, now seen corresponding path program 1 times [2024-10-23 21:04:13,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:13,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825163991] [2024-10-23 21:04:13,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:13,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:13,626 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:04:13,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:13,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825163991] [2024-10-23 21:04:13,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825163991] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:13,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:04:13,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:04:13,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418513989] [2024-10-23 21:04:13,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:13,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:04:13,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:13,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:04:13,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:04:13,629 INFO L87 Difference]: Start difference. First operand 8952 states and 10659 transitions. Second operand has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:14,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:04:14,958 INFO L93 Difference]: Finished difference Result 22712 states and 27382 transitions. [2024-10-23 21:04:14,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:04:14,959 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 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 256 [2024-10-23 21:04:14,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:04:14,983 INFO L225 Difference]: With dead ends: 22712 [2024-10-23 21:04:14,983 INFO L226 Difference]: Without dead ends: 13761 [2024-10-23 21:04:14,995 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:04:14,996 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 299 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:04:14,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 117 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-23 21:04:15,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13761 states. [2024-10-23 21:04:15,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13761 to 13377. [2024-10-23 21:04:15,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13377 states, 13376 states have (on average 1.1920604066985645) internal successors, (15945), 13376 states have internal predecessors, (15945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:15,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13377 states to 13377 states and 15945 transitions. [2024-10-23 21:04:15,172 INFO L78 Accepts]: Start accepts. Automaton has 13377 states and 15945 transitions. Word has length 256 [2024-10-23 21:04:15,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:04:15,173 INFO L471 AbstractCegarLoop]: Abstraction has 13377 states and 15945 transitions. [2024-10-23 21:04:15,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:15,173 INFO L276 IsEmpty]: Start isEmpty. Operand 13377 states and 15945 transitions. [2024-10-23 21:04:15,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-10-23 21:04:15,178 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:15,179 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:04:15,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-23 21:04:15,180 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:15,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:15,180 INFO L85 PathProgramCache]: Analyzing trace with hash 418739886, now seen corresponding path program 1 times [2024-10-23 21:04:15,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:15,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164996627] [2024-10-23 21:04:15,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:15,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:15,544 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 23 proven. 62 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-10-23 21:04:15,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:15,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164996627] [2024-10-23 21:04:15,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164996627] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:04:15,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813585788] [2024-10-23 21:04:15,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:15,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:04:15,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:04:15,547 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) [2024-10-23 21:04:15,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 21:04:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:15,674 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:04:15,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:04:15,777 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-10-23 21:04:15,777 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:04:15,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813585788] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:15,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:04:15,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-23 21:04:15,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502479826] [2024-10-23 21:04:15,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:15,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:04:15,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:15,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:04:15,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:04:15,780 INFO L87 Difference]: Start difference. First operand 13377 states and 15945 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:16,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:04:16,591 INFO L93 Difference]: Finished difference Result 32088 states and 38432 transitions. [2024-10-23 21:04:16,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:04:16,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 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 [2024-10-23 21:04:16,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:04:16,624 INFO L225 Difference]: With dead ends: 32088 [2024-10-23 21:04:16,624 INFO L226 Difference]: Without dead ends: 18712 [2024-10-23 21:04:16,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:04:16,639 INFO L432 NwaCegarLoop]: 349 mSDtfsCounter, 155 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:04:16,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 372 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 21:04:16,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18712 states. [2024-10-23 21:04:16,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18712 to 17788. [2024-10-23 21:04:16,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17788 states, 17787 states have (on average 1.1721481981222241) internal successors, (20849), 17787 states have internal predecessors, (20849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:16,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17788 states to 17788 states and 20849 transitions. [2024-10-23 21:04:16,868 INFO L78 Accepts]: Start accepts. Automaton has 17788 states and 20849 transitions. Word has length 258 [2024-10-23 21:04:16,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:04:16,868 INFO L471 AbstractCegarLoop]: Abstraction has 17788 states and 20849 transitions. [2024-10-23 21:04:16,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:16,869 INFO L276 IsEmpty]: Start isEmpty. Operand 17788 states and 20849 transitions. [2024-10-23 21:04:16,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-10-23 21:04:16,875 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:16,875 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:04:16,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-23 21:04:17,079 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,SelfDestructingSolverStorable11 [2024-10-23 21:04:17,080 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:17,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:17,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1553616771, now seen corresponding path program 1 times [2024-10-23 21:04:17,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:17,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651850124] [2024-10-23 21:04:17,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:17,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:17,389 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-10-23 21:04:17,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:17,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651850124] [2024-10-23 21:04:17,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651850124] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:17,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:04:17,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:04:17,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642119294] [2024-10-23 21:04:17,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:17,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:04:17,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:17,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:04:17,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:04:17,395 INFO L87 Difference]: Start difference. First operand 17788 states and 20849 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:18,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:04:18,241 INFO L93 Difference]: Finished difference Result 35585 states and 41717 transitions. [2024-10-23 21:04:18,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:04:18,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 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 263 [2024-10-23 21:04:18,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:04:18,266 INFO L225 Difference]: With dead ends: 35585 [2024-10-23 21:04:18,266 INFO L226 Difference]: Without dead ends: 17798 [2024-10-23 21:04:18,284 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 [2024-10-23 21:04:18,285 INFO L432 NwaCegarLoop]: 353 mSDtfsCounter, 155 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:04:18,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 374 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 21:04:18,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17798 states. [2024-10-23 21:04:18,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17798 to 17787. [2024-10-23 21:04:18,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17787 states, 17786 states have (on average 1.1440458787810637) internal successors, (20348), 17786 states have internal predecessors, (20348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:18,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17787 states to 17787 states and 20348 transitions. [2024-10-23 21:04:18,492 INFO L78 Accepts]: Start accepts. Automaton has 17787 states and 20348 transitions. Word has length 263 [2024-10-23 21:04:18,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:04:18,492 INFO L471 AbstractCegarLoop]: Abstraction has 17787 states and 20348 transitions. [2024-10-23 21:04:18,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:18,493 INFO L276 IsEmpty]: Start isEmpty. Operand 17787 states and 20348 transitions. [2024-10-23 21:04:18,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-10-23 21:04:18,499 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:18,500 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:04:18,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-23 21:04:18,501 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:18,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:18,502 INFO L85 PathProgramCache]: Analyzing trace with hash -816933676, now seen corresponding path program 1 times [2024-10-23 21:04:18,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:18,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142287476] [2024-10-23 21:04:18,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:18,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:19,182 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 141 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:04:19,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:19,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142287476] [2024-10-23 21:04:19,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142287476] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:04:19,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290090127] [2024-10-23 21:04:19,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:19,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:04:19,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:04:19,185 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) [2024-10-23 21:04:19,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 21:04:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:19,352 INFO L255 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 21:04:19,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:04:19,822 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:04:19,822 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:04:19,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290090127] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:19,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:04:19,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-23 21:04:19,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569860611] [2024-10-23 21:04:19,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:19,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:04:19,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:19,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:04:19,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:04:19,824 INFO L87 Difference]: Start difference. First operand 17787 states and 20348 transitions. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:20,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:04:20,626 INFO L93 Difference]: Finished difference Result 35577 states and 40701 transitions. [2024-10-23 21:04:20,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:04:20,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 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 277 [2024-10-23 21:04:20,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:04:20,647 INFO L225 Difference]: With dead ends: 35577 [2024-10-23 21:04:20,647 INFO L226 Difference]: Without dead ends: 17791 [2024-10-23 21:04:20,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:04:20,663 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 172 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:04:20,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 174 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1042 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 21:04:20,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17791 states. [2024-10-23 21:04:20,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17791 to 17787. [2024-10-23 21:04:20,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17787 states, 17786 states have (on average 1.1430338468458339) internal successors, (20330), 17786 states have internal predecessors, (20330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:20,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17787 states to 17787 states and 20330 transitions. [2024-10-23 21:04:20,845 INFO L78 Accepts]: Start accepts. Automaton has 17787 states and 20330 transitions. Word has length 277 [2024-10-23 21:04:20,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:04:20,846 INFO L471 AbstractCegarLoop]: Abstraction has 17787 states and 20330 transitions. [2024-10-23 21:04:20,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:20,846 INFO L276 IsEmpty]: Start isEmpty. Operand 17787 states and 20330 transitions. [2024-10-23 21:04:20,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-10-23 21:04:20,853 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:20,853 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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] [2024-10-23 21:04:20,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-23 21:04:21,054 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,SelfDestructingSolverStorable13 [2024-10-23 21:04:21,054 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:21,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:21,055 INFO L85 PathProgramCache]: Analyzing trace with hash -160373466, now seen corresponding path program 1 times [2024-10-23 21:04:21,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:21,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971915016] [2024-10-23 21:04:21,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:21,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:21,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:21,270 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2024-10-23 21:04:21,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:21,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971915016] [2024-10-23 21:04:21,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971915016] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:21,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:04:21,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:04:21,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284210245] [2024-10-23 21:04:21,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:21,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:04:21,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:21,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:04:21,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:04:21,273 INFO L87 Difference]: Start difference. First operand 17787 states and 20330 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:21,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:04:21,875 INFO L93 Difference]: Finished difference Result 33136 states and 37922 transitions. [2024-10-23 21:04:21,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:04:21,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 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 303 [2024-10-23 21:04:21,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:04:21,893 INFO L225 Difference]: With dead ends: 33136 [2024-10-23 21:04:21,893 INFO L226 Difference]: Without dead ends: 15350 [2024-10-23 21:04:21,908 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 [2024-10-23 21:04:21,908 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 124 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:04:21,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 147 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 21:04:21,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15350 states. [2024-10-23 21:04:22,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15350 to 10740. [2024-10-23 21:04:22,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10740 states, 10739 states have (on average 1.1163050563367167) internal successors, (11988), 10739 states have internal predecessors, (11988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:22,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10740 states to 10740 states and 11988 transitions. [2024-10-23 21:04:22,031 INFO L78 Accepts]: Start accepts. Automaton has 10740 states and 11988 transitions. Word has length 303 [2024-10-23 21:04:22,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:04:22,032 INFO L471 AbstractCegarLoop]: Abstraction has 10740 states and 11988 transitions. [2024-10-23 21:04:22,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:22,032 INFO L276 IsEmpty]: Start isEmpty. Operand 10740 states and 11988 transitions. [2024-10-23 21:04:22,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2024-10-23 21:04:22,038 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:22,038 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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] [2024-10-23 21:04:22,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-23 21:04:22,039 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:22,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:22,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1318154156, now seen corresponding path program 1 times [2024-10-23 21:04:22,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:22,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132155288] [2024-10-23 21:04:22,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:22,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:22,249 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-10-23 21:04:22,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:22,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132155288] [2024-10-23 21:04:22,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132155288] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:22,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:04:22,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:04:22,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024927780] [2024-10-23 21:04:22,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:22,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:04:22,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:22,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:04:22,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:04:22,252 INFO L87 Difference]: Start difference. First operand 10740 states and 11988 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:22,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:04:22,859 INFO L93 Difference]: Finished difference Result 23502 states and 26239 transitions. [2024-10-23 21:04:22,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:04:22,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 311 [2024-10-23 21:04:22,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:04:22,877 INFO L225 Difference]: With dead ends: 23502 [2024-10-23 21:04:22,878 INFO L226 Difference]: Without dead ends: 12763 [2024-10-23 21:04:22,888 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 [2024-10-23 21:04:22,889 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 175 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:04:22,889 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 142 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 21:04:22,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12763 states. [2024-10-23 21:04:23,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12763 to 10923. [2024-10-23 21:04:23,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10923 states, 10922 states have (on average 1.1170115363486541) internal successors, (12200), 10922 states have internal predecessors, (12200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:23,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10923 states to 10923 states and 12200 transitions. [2024-10-23 21:04:23,061 INFO L78 Accepts]: Start accepts. Automaton has 10923 states and 12200 transitions. Word has length 311 [2024-10-23 21:04:23,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:04:23,062 INFO L471 AbstractCegarLoop]: Abstraction has 10923 states and 12200 transitions. [2024-10-23 21:04:23,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:23,062 INFO L276 IsEmpty]: Start isEmpty. Operand 10923 states and 12200 transitions. [2024-10-23 21:04:23,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2024-10-23 21:04:23,070 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:23,071 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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] [2024-10-23 21:04:23,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-23 21:04:23,071 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:23,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:23,072 INFO L85 PathProgramCache]: Analyzing trace with hash 304444686, now seen corresponding path program 1 times [2024-10-23 21:04:23,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:23,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429734740] [2024-10-23 21:04:23,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:23,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:23,660 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-23 21:04:23,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:23,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429734740] [2024-10-23 21:04:23,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429734740] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:23,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:04:23,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:04:23,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600956443] [2024-10-23 21:04:23,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:23,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:04:23,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:23,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:04:23,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:04:23,662 INFO L87 Difference]: Start difference. First operand 10923 states and 12200 transitions. Second operand has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:24,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:04:24,815 INFO L93 Difference]: Finished difference Result 27403 states and 30589 transitions. [2024-10-23 21:04:24,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:04:24,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 315 [2024-10-23 21:04:24,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:04:24,831 INFO L225 Difference]: With dead ends: 27403 [2024-10-23 21:04:24,831 INFO L226 Difference]: Without dead ends: 15740 [2024-10-23 21:04:24,840 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:04:24,840 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 293 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1505 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 1580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:04:24,841 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 415 Invalid, 1580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1505 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-23 21:04:24,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15740 states. [2024-10-23 21:04:24,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15740 to 12412. [2024-10-23 21:04:24,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12412 states, 12411 states have (on average 1.1173958585126098) internal successors, (13868), 12411 states have internal predecessors, (13868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:24,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12412 states to 12412 states and 13868 transitions. [2024-10-23 21:04:24,976 INFO L78 Accepts]: Start accepts. Automaton has 12412 states and 13868 transitions. Word has length 315 [2024-10-23 21:04:24,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:04:24,976 INFO L471 AbstractCegarLoop]: Abstraction has 12412 states and 13868 transitions. [2024-10-23 21:04:24,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:24,977 INFO L276 IsEmpty]: Start isEmpty. Operand 12412 states and 13868 transitions. [2024-10-23 21:04:24,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2024-10-23 21:04:24,983 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:24,983 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-23 21:04:24,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-23 21:04:24,983 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:24,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:24,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1940034506, now seen corresponding path program 1 times [2024-10-23 21:04:24,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:24,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748725485] [2024-10-23 21:04:24,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:24,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:25,879 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 174 proven. 128 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-23 21:04:25,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:25,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748725485] [2024-10-23 21:04:25,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748725485] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:04:25,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436063026] [2024-10-23 21:04:25,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:25,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:04:25,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:04:25,882 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) [2024-10-23 21:04:25,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-23 21:04:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:26,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 21:04:26,010 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:04:26,444 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-23 21:04:26,444 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:04:26,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436063026] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:26,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:04:26,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-23 21:04:26,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026226877] [2024-10-23 21:04:26,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:26,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:04:26,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:26,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:04:26,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-23 21:04:26,446 INFO L87 Difference]: Start difference. First operand 12412 states and 13868 transitions. Second operand has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:27,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:04:27,136 INFO L93 Difference]: Finished difference Result 25009 states and 27927 transitions. [2024-10-23 21:04:27,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:04:27,136 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 331 [2024-10-23 21:04:27,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:04:27,191 INFO L225 Difference]: With dead ends: 25009 [2024-10-23 21:04:27,191 INFO L226 Difference]: Without dead ends: 12598 [2024-10-23 21:04:27,195 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-23 21:04:27,196 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 292 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:04:27,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 148 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 21:04:27,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12598 states. [2024-10-23 21:04:27,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12598 to 12412. [2024-10-23 21:04:27,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12412 states, 12411 states have (on average 1.1164289742969946) internal successors, (13856), 12411 states have internal predecessors, (13856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:27,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12412 states to 12412 states and 13856 transitions. [2024-10-23 21:04:27,300 INFO L78 Accepts]: Start accepts. Automaton has 12412 states and 13856 transitions. Word has length 331 [2024-10-23 21:04:27,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:04:27,301 INFO L471 AbstractCegarLoop]: Abstraction has 12412 states and 13856 transitions. [2024-10-23 21:04:27,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:27,301 INFO L276 IsEmpty]: Start isEmpty. Operand 12412 states and 13856 transitions. [2024-10-23 21:04:27,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2024-10-23 21:04:27,309 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:27,309 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-23 21:04:27,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-23 21:04:27,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-23 21:04:27,510 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:27,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:27,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1681842053, now seen corresponding path program 1 times [2024-10-23 21:04:27,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:27,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779805433] [2024-10-23 21:04:27,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:27,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:27,998 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-10-23 21:04:27,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:27,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779805433] [2024-10-23 21:04:28,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779805433] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:28,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:04:28,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:04:28,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288827212] [2024-10-23 21:04:28,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:28,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:04:28,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:28,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:04:28,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:04:28,004 INFO L87 Difference]: Start difference. First operand 12412 states and 13856 transitions. Second operand has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:29,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:04:29,018 INFO L93 Difference]: Finished difference Result 29070 states and 32392 transitions. [2024-10-23 21:04:29,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:04:29,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 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 353 [2024-10-23 21:04:29,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:04:29,036 INFO L225 Difference]: With dead ends: 29070 [2024-10-23 21:04:29,036 INFO L226 Difference]: Without dead ends: 16102 [2024-10-23 21:04:29,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:04:29,048 INFO L432 NwaCegarLoop]: 317 mSDtfsCounter, 294 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:04:29,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 351 Invalid, 1193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-23 21:04:29,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16102 states. [2024-10-23 21:04:29,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16102 to 10549. [2024-10-23 21:04:29,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10549 states, 10548 states have (on average 1.1117747440273038) internal successors, (11727), 10548 states have internal predecessors, (11727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:29,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10549 states to 10549 states and 11727 transitions. [2024-10-23 21:04:29,193 INFO L78 Accepts]: Start accepts. Automaton has 10549 states and 11727 transitions. Word has length 353 [2024-10-23 21:04:29,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:04:29,194 INFO L471 AbstractCegarLoop]: Abstraction has 10549 states and 11727 transitions. [2024-10-23 21:04:29,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:29,194 INFO L276 IsEmpty]: Start isEmpty. Operand 10549 states and 11727 transitions. [2024-10-23 21:04:29,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2024-10-23 21:04:29,201 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:29,201 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:04:29,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-23 21:04:29,202 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:29,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:29,202 INFO L85 PathProgramCache]: Analyzing trace with hash -168553063, now seen corresponding path program 1 times [2024-10-23 21:04:29,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:29,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175239369] [2024-10-23 21:04:29,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:29,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:29,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:29,589 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-10-23 21:04:29,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:29,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175239369] [2024-10-23 21:04:29,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175239369] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:29,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:04:29,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:04:29,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766615066] [2024-10-23 21:04:29,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:29,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:04:29,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:29,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:04:29,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:04:29,594 INFO L87 Difference]: Start difference. First operand 10549 states and 11727 transitions. Second operand has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:30,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:04:30,308 INFO L93 Difference]: Finished difference Result 23311 states and 25814 transitions. [2024-10-23 21:04:30,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:04:30,308 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 0 states have call successors, (0), 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 366 [2024-10-23 21:04:30,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:04:30,318 INFO L225 Difference]: With dead ends: 23311 [2024-10-23 21:04:30,318 INFO L226 Difference]: Without dead ends: 12763 [2024-10-23 21:04:30,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:04:30,324 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 311 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:04:30,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 54 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 21:04:30,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12763 states. [2024-10-23 21:04:30,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12763 to 10176. [2024-10-23 21:04:30,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10176 states, 10175 states have (on average 1.1077149877149877) internal successors, (11271), 10175 states have internal predecessors, (11271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:30,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10176 states to 10176 states and 11271 transitions. [2024-10-23 21:04:30,397 INFO L78 Accepts]: Start accepts. Automaton has 10176 states and 11271 transitions. Word has length 366 [2024-10-23 21:04:30,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:04:30,398 INFO L471 AbstractCegarLoop]: Abstraction has 10176 states and 11271 transitions. [2024-10-23 21:04:30,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:30,398 INFO L276 IsEmpty]: Start isEmpty. Operand 10176 states and 11271 transitions. [2024-10-23 21:04:30,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2024-10-23 21:04:30,403 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:30,403 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:04:30,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-23 21:04:30,404 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:30,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:30,404 INFO L85 PathProgramCache]: Analyzing trace with hash 2068328638, now seen corresponding path program 1 times [2024-10-23 21:04:30,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:30,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891460816] [2024-10-23 21:04:30,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:30,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:30,662 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 400 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-10-23 21:04:30,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:30,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891460816] [2024-10-23 21:04:30,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891460816] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:30,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:04:30,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:04:30,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242988337] [2024-10-23 21:04:30,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:30,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:04:30,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:30,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:04:30,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:04:30,666 INFO L87 Difference]: Start difference. First operand 10176 states and 11271 transitions. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:31,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:04:31,500 INFO L93 Difference]: Finished difference Result 27178 states and 30080 transitions. [2024-10-23 21:04:31,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:04:31,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 401 [2024-10-23 21:04:31,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:04:31,518 INFO L225 Difference]: With dead ends: 27178 [2024-10-23 21:04:31,518 INFO L226 Difference]: Without dead ends: 17003 [2024-10-23 21:04:31,526 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 [2024-10-23 21:04:31,527 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 220 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:04:31,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 61 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 21:04:31,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17003 states. [2024-10-23 21:04:31,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17003 to 15890. [2024-10-23 21:04:31,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15890 states, 15889 states have (on average 1.1056705897161558) internal successors, (17568), 15889 states have internal predecessors, (17568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:31,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15890 states to 15890 states and 17568 transitions. [2024-10-23 21:04:31,644 INFO L78 Accepts]: Start accepts. Automaton has 15890 states and 17568 transitions. Word has length 401 [2024-10-23 21:04:31,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:04:31,644 INFO L471 AbstractCegarLoop]: Abstraction has 15890 states and 17568 transitions. [2024-10-23 21:04:31,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:31,645 INFO L276 IsEmpty]: Start isEmpty. Operand 15890 states and 17568 transitions. [2024-10-23 21:04:31,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2024-10-23 21:04:31,657 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:31,657 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:04:31,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-23 21:04:31,658 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:31,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:31,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1182879451, now seen corresponding path program 1 times [2024-10-23 21:04:31,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:31,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029515816] [2024-10-23 21:04:31,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:31,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:31,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:31,996 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 675 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-10-23 21:04:31,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:31,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029515816] [2024-10-23 21:04:31,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029515816] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:31,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:04:31,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:04:31,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476260059] [2024-10-23 21:04:31,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:31,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:04:31,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:31,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:04:31,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:04:31,998 INFO L87 Difference]: Start difference. First operand 15890 states and 17568 transitions. Second operand has 4 states, 4 states have (on average 94.25) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:32,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:04:32,858 INFO L93 Difference]: Finished difference Result 30496 states and 33715 transitions. [2024-10-23 21:04:32,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:04:32,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 94.25) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 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 546 [2024-10-23 21:04:32,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:04:32,874 INFO L225 Difference]: With dead ends: 30496 [2024-10-23 21:04:32,874 INFO L226 Difference]: Without dead ends: 17003 [2024-10-23 21:04:32,881 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 [2024-10-23 21:04:32,882 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 195 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:04:32,882 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 61 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 21:04:32,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17003 states. [2024-10-23 21:04:32,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17003 to 15706. [2024-10-23 21:04:32,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15706 states, 15705 states have (on average 1.1050620821394461) internal successors, (17355), 15705 states have internal predecessors, (17355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:33,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15706 states to 15706 states and 17355 transitions. [2024-10-23 21:04:33,003 INFO L78 Accepts]: Start accepts. Automaton has 15706 states and 17355 transitions. Word has length 546 [2024-10-23 21:04:33,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:04:33,004 INFO L471 AbstractCegarLoop]: Abstraction has 15706 states and 17355 transitions. [2024-10-23 21:04:33,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.25) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:33,004 INFO L276 IsEmpty]: Start isEmpty. Operand 15706 states and 17355 transitions. [2024-10-23 21:04:33,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2024-10-23 21:04:33,016 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:33,016 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:04:33,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-23 21:04:33,017 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:33,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:33,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1514925947, now seen corresponding path program 1 times [2024-10-23 21:04:33,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:33,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633949814] [2024-10-23 21:04:33,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:33,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:33,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 564 proven. 0 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2024-10-23 21:04:33,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:33,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633949814] [2024-10-23 21:04:33,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633949814] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:33,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:04:33,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:04:33,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997665475] [2024-10-23 21:04:33,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:33,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:04:33,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:33,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:04:33,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:04:33,281 INFO L87 Difference]: Start difference. First operand 15706 states and 17355 transitions. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:33,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:04:33,856 INFO L93 Difference]: Finished difference Result 29217 states and 32304 transitions. [2024-10-23 21:04:33,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:04:33,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 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 560 [2024-10-23 21:04:33,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:04:33,871 INFO L225 Difference]: With dead ends: 29217 [2024-10-23 21:04:33,872 INFO L226 Difference]: Without dead ends: 15724 [2024-10-23 21:04:33,878 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 [2024-10-23 21:04:33,879 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 101 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:04:33,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 158 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 21:04:33,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15724 states. [2024-10-23 21:04:33,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15724 to 15338. [2024-10-23 21:04:33,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15338 states, 15337 states have (on average 1.0973462867575146) internal successors, (16830), 15337 states have internal predecessors, (16830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:33,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15338 states to 15338 states and 16830 transitions. [2024-10-23 21:04:33,993 INFO L78 Accepts]: Start accepts. Automaton has 15338 states and 16830 transitions. Word has length 560 [2024-10-23 21:04:33,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:04:33,993 INFO L471 AbstractCegarLoop]: Abstraction has 15338 states and 16830 transitions. [2024-10-23 21:04:33,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:33,993 INFO L276 IsEmpty]: Start isEmpty. Operand 15338 states and 16830 transitions. [2024-10-23 21:04:34,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2024-10-23 21:04:34,003 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:04:34,003 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:04:34,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-23 21:04:34,004 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:04:34,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:04:34,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1393414426, now seen corresponding path program 1 times [2024-10-23 21:04:34,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:04:34,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660048885] [2024-10-23 21:04:34,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:04:34,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:04:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:04:34,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 564 proven. 0 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2024-10-23 21:04:34,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:04:34,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660048885] [2024-10-23 21:04:34,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660048885] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:04:34,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:04:34,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:04:34,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584207054] [2024-10-23 21:04:34,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:04:34,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:04:34,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:04:34,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:04:34,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:04:34,199 INFO L87 Difference]: Start difference. First operand 15338 states and 16830 transitions. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:34,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:04:34,745 INFO L93 Difference]: Finished difference Result 31774 states and 34828 transitions. [2024-10-23 21:04:34,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:04:34,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 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 561 [2024-10-23 21:04:34,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:04:34,746 INFO L225 Difference]: With dead ends: 31774 [2024-10-23 21:04:34,746 INFO L226 Difference]: Without dead ends: 0 [2024-10-23 21:04:34,757 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 [2024-10-23 21:04:34,757 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 100 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:04:34,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 125 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 21:04:34,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-23 21:04:34,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-23 21:04:34,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:34,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-23 21:04:34,759 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 561 [2024-10-23 21:04:34,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:04:34,759 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-23 21:04:34,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:04:34,759 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-23 21:04:34,760 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-23 21:04:34,762 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-23 21:04:34,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-23 21:04:34,765 INFO L407 BasicCegarLoop]: Path program 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] [2024-10-23 21:04:34,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-23 21:04:39,939 WARN L286 SmtUtils]: Spent 5.17s on a formula simplification. DAG size of input: 454 DAG size of output: 535 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-10-23 21:04:42,091 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-23 21:04:42,116 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:04:42 BoogieIcfgContainer [2024-10-23 21:04:42,116 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-23 21:04:42,119 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-23 21:04:42,119 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-23 21:04:42,119 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-23 21:04:42,119 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:04:02" (3/4) ... [2024-10-23 21:04:42,121 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-23 21:04:42,142 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-10-23 21:04:42,144 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-10-23 21:04:42,145 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-23 21:04:42,146 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-23 21:04:42,308 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-23 21:04:42,308 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-23 21:04:42,308 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-23 21:04:42,308 INFO L158 Benchmark]: Toolchain (without parser) took 43118.23ms. Allocated memory was 153.1MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 118.0MB in the beginning and 954.0MB in the end (delta: -835.9MB). Peak memory consumption was 355.2MB. Max. memory is 16.1GB. [2024-10-23 21:04:42,309 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 153.1MB. Free memory is still 120.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-23 21:04:42,309 INFO L158 Benchmark]: CACSL2BoogieTranslator took 706.98ms. Allocated memory is still 153.1MB. Free memory was 117.5MB in the beginning and 70.2MB in the end (delta: 47.2MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2024-10-23 21:04:42,309 INFO L158 Benchmark]: Boogie Procedure Inliner took 148.31ms. Allocated memory is still 153.1MB. Free memory was 70.2MB in the beginning and 53.0MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-10-23 21:04:42,309 INFO L158 Benchmark]: Boogie Preprocessor took 261.92ms. Allocated memory was 153.1MB in the beginning and 222.3MB in the end (delta: 69.2MB). Free memory was 53.0MB in the beginning and 162.1MB in the end (delta: -109.1MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. [2024-10-23 21:04:42,309 INFO L158 Benchmark]: RCFGBuilder took 1771.22ms. Allocated memory is still 222.3MB. Free memory was 162.1MB in the beginning and 66.4MB in the end (delta: 95.7MB). Peak memory consumption was 96.5MB. Max. memory is 16.1GB. [2024-10-23 21:04:42,310 INFO L158 Benchmark]: TraceAbstraction took 40032.52ms. Allocated memory was 222.3MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 66.4MB in the beginning and 970.7MB in the end (delta: -904.3MB). Peak memory consumption was 783.6MB. Max. memory is 16.1GB. [2024-10-23 21:04:42,310 INFO L158 Benchmark]: Witness Printer took 189.32ms. Allocated memory is still 1.3GB. Free memory was 970.7MB in the beginning and 954.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-10-23 21:04:42,311 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 153.1MB. Free memory is still 120.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 706.98ms. Allocated memory is still 153.1MB. Free memory was 117.5MB in the beginning and 70.2MB in the end (delta: 47.2MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 148.31ms. Allocated memory is still 153.1MB. Free memory was 70.2MB in the beginning and 53.0MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 261.92ms. Allocated memory was 153.1MB in the beginning and 222.3MB in the end (delta: 69.2MB). Free memory was 53.0MB in the beginning and 162.1MB in the end (delta: -109.1MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1771.22ms. Allocated memory is still 222.3MB. Free memory was 162.1MB in the beginning and 66.4MB in the end (delta: 95.7MB). Peak memory consumption was 96.5MB. Max. memory is 16.1GB. * TraceAbstraction took 40032.52ms. Allocated memory was 222.3MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 66.4MB in the beginning and 970.7MB in the end (delta: -904.3MB). Peak memory consumption was 783.6MB. Max. memory is 16.1GB. * Witness Printer took 189.32ms. Allocated memory is still 1.3GB. Free memory was 970.7MB in the beginning and 954.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 151]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 221 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 32.6s, OverallIterations: 24, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 19.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4345 SdHoareTripleChecker+Valid, 17.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4345 mSDsluCounter, 5222 SdHoareTripleChecker+Invalid, 14.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 648 mSDsCounter, 2109 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17096 IncrementalHoareTripleChecker+Invalid, 19205 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2109 mSolverCounterUnsat, 4574 mSDtfsCounter, 17096 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 938 GetRequests, 896 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17788occurred in iteration=12, InterpolantAutomatonStates: 80, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.5s AutomataMinimizationTime, 24 MinimizatonAttempts, 24702 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 7.7s InterpolantComputationTime, 7528 NumberOfCodeBlocks, 7528 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 7501 ConstructedInterpolants, 0 QuantifiedInterpolants, 23029 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1216 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 27 InterpolantComputations, 24 PerfectInterpolantSequences, 7701/7924 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 1044]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((a25 <= 10) && (a4 == 1)) && (312 <= a23)) && (a29 <= 130)) || (((((long long) a23 + 43) <= 0) && (a25 == 12)) && (a29 <= 220))) || (((a25 == 11) && (a29 <= 599999)) && (a4 == 1))) || ((((307 <= a23) && (a29 <= 599999)) && (a4 == 1)) && (a25 == 10))) || (((((long long) a23 + 43) <= 0) && (a25 == 11)) && (a29 <= 130))) || (((a25 == 13) && (a29 <= 599999)) && (a4 == 1))) || ((((a29 <= 140) && (a4 == 0)) && (a23 <= 262)) && (a25 == 9))) || (((a4 == 0) && (a25 == 10)) && (a29 <= 130))) || (((a29 <= 275) && (a25 == 12)) && (a4 == 0))) || ((((a25 == 13) && (a4 == 0)) && (((long long) 35913 + a29) <= 0)) && (a23 <= 137))) || (((a29 <= 275) && (a4 == 1)) && (a25 == 10))) || ((((((long long) a23 + 43) <= 0) && (a4 == 0)) && (a29 <= 599999)) && (a25 == 9))) || ((((((long long) a23 + 43) <= 0) && (a4 == 0)) && (a25 == 11)) && (a29 <= 599999))) || ((((a29 <= 140) && (a4 == 0)) && (a23 <= 262)) && (a25 == 10))) || (((a25 == 12) && (a29 <= 599999)) && (a4 == 1))) || (((a25 == 11) && (a4 == 1)) && (a23 <= 137))) || ((((a25 == 12) && (a4 == 0)) && (a29 <= 599999)) && (a23 <= 137))) || ((((a25 == 13) && (((long long) a23 + 43) <= 0)) && (a29 <= 275)) && (a4 == 0))) || ((((((((long long) a23 + 43) <= 0) && (((long long) a29 + 275824) <= 0)) && (a25 == 9)) || ((((a29 <= 275) && (a25 <= 10)) && (a23 <= 262)) && (a4 == 1))) || (((((long long) a23 + 43) <= 0) && (a25 <= 10)) && (a4 == 1))) && (a29 <= 599999))) || (((a29 <= 599999) && (a25 == 9)) && (a4 == 1))) || ((((a29 <= 275) && (a4 == 0)) && (a25 == 11)) && (a23 <= 262))) RESULT: Ultimate proved your program to be correct! [2024-10-23 21:04:42,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE