./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/Problem01_label08.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/Problem01_label08.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 2b164c8a6d888b02829fcf47aa29b65b3f70721fb3d5c6d11e211a49d8b59e83 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 20:17:39,352 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 20:17:39,413 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 20:17:39,418 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 20:17:39,418 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 20:17:39,439 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 20:17:39,440 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 20:17:39,440 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 20:17:39,441 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 20:17:39,442 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 20:17:39,442 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 20:17:39,442 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 20:17:39,443 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 20:17:39,444 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 20:17:39,444 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 20:17:39,445 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 20:17:39,445 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 20:17:39,445 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 20:17:39,445 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 20:17:39,446 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 20:17:39,446 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 20:17:39,446 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 20:17:39,447 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 20:17:39,447 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 20:17:39,447 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 20:17:39,447 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 20:17:39,447 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 20:17:39,448 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 20:17:39,448 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 20:17:39,448 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 20:17:39,448 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 20:17:39,449 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 20:17:39,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 20:17:39,449 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 20:17:39,449 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 20:17:39,450 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 20:17:39,450 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 20:17:39,450 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 20:17:39,450 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 20:17:39,450 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 20:17:39,451 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 20:17:39,451 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 20:17:39,451 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b164c8a6d888b02829fcf47aa29b65b3f70721fb3d5c6d11e211a49d8b59e83 [2024-10-23 20:17:39,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 20:17:39,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 20:17:39,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 20:17:39,668 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 20:17:39,668 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 20:17:39,669 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label08.c [2024-10-23 20:17:40,922 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 20:17:41,147 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 20:17:41,148 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label08.c [2024-10-23 20:17:41,158 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eea61f04f/c299d049731040b9b042e27e5c5063fd/FLAG7caea9b0d [2024-10-23 20:17:41,174 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eea61f04f/c299d049731040b9b042e27e5c5063fd [2024-10-23 20:17:41,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 20:17:41,178 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 20:17:41,181 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 20:17:41,181 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 20:17:41,185 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 20:17:41,186 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:17:41" (1/1) ... [2024-10-23 20:17:41,187 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@507b917d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:17:41, skipping insertion in model container [2024-10-23 20:17:41,187 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:17:41" (1/1) ... [2024-10-23 20:17:41,227 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 20:17:41,526 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/Problem01_label08.c[19599,19612] [2024-10-23 20:17:41,553 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 20:17:41,564 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 20:17:41,628 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/Problem01_label08.c[19599,19612] [2024-10-23 20:17:41,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 20:17:41,655 INFO L204 MainTranslator]: Completed translation [2024-10-23 20:17:41,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:17:41 WrapperNode [2024-10-23 20:17:41,656 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 20:17:41,657 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 20:17:41,658 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 20:17:41,658 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 20:17:41,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:17:41" (1/1) ... [2024-10-23 20:17:41,685 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:17:41" (1/1) ... [2024-10-23 20:17:41,723 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 658 [2024-10-23 20:17:41,723 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 20:17:41,724 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 20:17:41,724 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 20:17:41,724 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 20:17:41,736 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:17:41" (1/1) ... [2024-10-23 20:17:41,736 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:17:41" (1/1) ... [2024-10-23 20:17:41,740 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:17:41" (1/1) ... [2024-10-23 20:17:41,768 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 20:17:41,768 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:17:41" (1/1) ... [2024-10-23 20:17:41,768 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:17:41" (1/1) ... [2024-10-23 20:17:41,792 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:17:41" (1/1) ... [2024-10-23 20:17:41,805 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:17:41" (1/1) ... [2024-10-23 20:17:41,812 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:17:41" (1/1) ... [2024-10-23 20:17:41,817 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:17:41" (1/1) ... [2024-10-23 20:17:41,824 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 20:17:41,825 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 20:17:41,826 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 20:17:41,826 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 20:17:41,826 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:17:41" (1/1) ... [2024-10-23 20:17:41,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 20:17:41,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:17:41,856 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 20:17:41,859 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 20:17:41,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 20:17:41,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 20:17:41,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 20:17:41,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 20:17:41,961 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 20:17:41,962 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 20:17:42,731 INFO L? ?]: Removed 75 outVars from TransFormulas that were not future-live. [2024-10-23 20:17:42,731 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 20:17:42,772 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 20:17:42,773 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 20:17:42,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:17:42 BoogieIcfgContainer [2024-10-23 20:17:42,773 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 20:17:42,775 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 20:17:42,775 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 20:17:42,778 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 20:17:42,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:17:41" (1/3) ... [2024-10-23 20:17:42,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55fdb638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:17:42, skipping insertion in model container [2024-10-23 20:17:42,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:17:41" (2/3) ... [2024-10-23 20:17:42,780 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55fdb638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:17:42, skipping insertion in model container [2024-10-23 20:17:42,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:17:42" (3/3) ... [2024-10-23 20:17:42,782 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label08.c [2024-10-23 20:17:42,796 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 20:17:42,797 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 20:17:42,857 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 20:17:42,863 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@e36c95c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 20:17:42,863 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 20:17:42,867 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 134 states have (on average 1.9776119402985075) internal successors, (265), 135 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:17:42,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-23 20:17:42,876 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:17:42,877 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:17:42,877 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:17:42,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:17:42,882 INFO L85 PathProgramCache]: Analyzing trace with hash 481303523, now seen corresponding path program 1 times [2024-10-23 20:17:42,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:17:42,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310281051] [2024-10-23 20:17:42,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:17:42,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:17:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:17:43,216 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 20:17:43,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:17:43,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310281051] [2024-10-23 20:17:43,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310281051] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:17:43,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:17:43,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:17:43,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864188763] [2024-10-23 20:17:43,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:17:43,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 20:17:43,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:17:43,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 20:17:43,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 20:17:43,264 INFO L87 Difference]: Start difference. First operand has 136 states, 134 states have (on average 1.9776119402985075) internal successors, (265), 135 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 56.0) 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 20:17:43,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:17:43,298 INFO L93 Difference]: Finished difference Result 271 states and 529 transitions. [2024-10-23 20:17:43,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 20:17:43,302 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 56.0) 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 20:17:43,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:17:43,311 INFO L225 Difference]: With dead ends: 271 [2024-10-23 20:17:43,312 INFO L226 Difference]: Without dead ends: 134 [2024-10-23 20:17:43,315 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 20:17:43,319 INFO L432 NwaCegarLoop]: 200 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, 200 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 20:17:43,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 200 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 20:17:43,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-10-23 20:17:43,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2024-10-23 20:17:43,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.5037593984962405) internal successors, (200), 133 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:17:43,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 200 transitions. [2024-10-23 20:17:43,362 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 200 transitions. Word has length 112 [2024-10-23 20:17:43,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:17:43,364 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 200 transitions. [2024-10-23 20:17:43,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 56.0) 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 20:17:43,364 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 200 transitions. [2024-10-23 20:17:43,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-23 20:17:43,366 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:17:43,366 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:17:43,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 20:17:43,367 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:17:43,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:17:43,367 INFO L85 PathProgramCache]: Analyzing trace with hash 608565302, now seen corresponding path program 1 times [2024-10-23 20:17:43,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:17:43,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889512380] [2024-10-23 20:17:43,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:17:43,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:17:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:17:43,902 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 20:17:43,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:17:43,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889512380] [2024-10-23 20:17:43,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889512380] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:17:43,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:17:43,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 20:17:43,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997320595] [2024-10-23 20:17:43,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:17:43,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-23 20:17:43,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:17:43,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-23 20:17:43,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:17:43,906 INFO L87 Difference]: Start difference. First operand 134 states and 200 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 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 20:17:44,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:17:44,644 INFO L93 Difference]: Finished difference Result 529 states and 795 transitions. [2024-10-23 20:17:44,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 20:17:44,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 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 20:17:44,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:17:44,648 INFO L225 Difference]: With dead ends: 529 [2024-10-23 20:17:44,648 INFO L226 Difference]: Without dead ends: 396 [2024-10-23 20:17:44,649 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-23 20:17:44,652 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 309 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 20:17:44,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 40 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 20:17:44,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-10-23 20:17:44,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 396. [2024-10-23 20:17:44,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 1.3063291139240507) internal successors, (516), 395 states have internal predecessors, (516), 0 states have call successors, (0), 0 states 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 20:17:44,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 516 transitions. [2024-10-23 20:17:44,675 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 516 transitions. Word has length 112 [2024-10-23 20:17:44,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:17:44,676 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 516 transitions. [2024-10-23 20:17:44,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 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 20:17:44,676 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 516 transitions. [2024-10-23 20:17:44,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-10-23 20:17:44,678 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:17:44,678 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:17:44,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 20:17:44,679 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:17:44,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:17:44,679 INFO L85 PathProgramCache]: Analyzing trace with hash 396957635, now seen corresponding path program 1 times [2024-10-23 20:17:44,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:17:44,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359488420] [2024-10-23 20:17:44,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:17:44,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:17:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:17:44,938 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:17:44,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:17:44,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359488420] [2024-10-23 20:17:44,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359488420] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:17:44,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:17:44,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 20:17:44,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666690603] [2024-10-23 20:17:44,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:17:44,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 20:17:44,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:17:44,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 20:17:44,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 20:17:44,942 INFO L87 Difference]: Start difference. First operand 396 states and 516 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 20:17:45,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:17:45,510 INFO L93 Difference]: Finished difference Result 1017 states and 1432 transitions. [2024-10-23 20:17:45,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 20:17:45,510 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2024-10-23 20:17:45,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:17:45,512 INFO L225 Difference]: With dead ends: 1017 [2024-10-23 20:17:45,512 INFO L226 Difference]: Without dead ends: 658 [2024-10-23 20:17:45,514 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 20:17:45,514 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 128 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 20:17:45,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 78 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 20:17:45,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2024-10-23 20:17:45,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 396. [2024-10-23 20:17:45,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 1.1974683544303797) internal successors, (473), 395 states have internal predecessors, (473), 0 states have call successors, (0), 0 states 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 20:17:45,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 473 transitions. [2024-10-23 20:17:45,528 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 473 transitions. Word has length 119 [2024-10-23 20:17:45,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:17:45,529 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 473 transitions. [2024-10-23 20:17:45,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 20:17:45,529 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 473 transitions. [2024-10-23 20:17:45,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-10-23 20:17:45,531 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:17:45,531 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:17:45,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 20:17:45,531 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:17:45,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:17:45,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1712174267, now seen corresponding path program 1 times [2024-10-23 20:17:45,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:17:45,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660263327] [2024-10-23 20:17:45,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:17:45,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:17:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:17:45,722 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:17:45,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:17:45,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660263327] [2024-10-23 20:17:45,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660263327] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:17:45,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728598545] [2024-10-23 20:17:45,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:17:45,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:17:45,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:17:45,726 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 20:17:45,727 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 20:17:45,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:17:45,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 20:17:45,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:17:45,951 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-23 20:17:45,951 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:17:45,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728598545] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:17:45,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:17:45,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-23 20:17:45,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173335888] [2024-10-23 20:17:45,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:17:45,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:17:45,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:17:45,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:17:45,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:17:45,953 INFO L87 Difference]: Start difference. First operand 396 states and 473 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 20:17:46,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:17:46,246 INFO L93 Difference]: Finished difference Result 1184 states and 1416 transitions. [2024-10-23 20:17:46,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:17:46,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 127 [2024-10-23 20:17:46,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:17:46,250 INFO L225 Difference]: With dead ends: 1184 [2024-10-23 20:17:46,250 INFO L226 Difference]: Without dead ends: 789 [2024-10-23 20:17:46,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:17:46,252 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 31 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 20:17:46,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 16 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 20:17:46,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2024-10-23 20:17:46,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 658. [2024-10-23 20:17:46,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 657 states have (on average 1.2161339421613395) internal successors, (799), 657 states have internal predecessors, (799), 0 states have call successors, (0), 0 states 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 20:17:46,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 799 transitions. [2024-10-23 20:17:46,276 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 799 transitions. Word has length 127 [2024-10-23 20:17:46,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:17:46,276 INFO L471 AbstractCegarLoop]: Abstraction has 658 states and 799 transitions. [2024-10-23 20:17:46,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 20:17:46,277 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 799 transitions. [2024-10-23 20:17:46,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-10-23 20:17:46,283 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:17:46,283 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:17:46,299 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 20:17:46,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:17:46,491 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:17:46,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:17:46,491 INFO L85 PathProgramCache]: Analyzing trace with hash -56339482, now seen corresponding path program 1 times [2024-10-23 20:17:46,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:17:46,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059497395] [2024-10-23 20:17:46,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:17:46,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:17:46,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:17:46,695 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-23 20:17:46,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:17:46,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059497395] [2024-10-23 20:17:46,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059497395] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:17:46,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109550062] [2024-10-23 20:17:46,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:17:46,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:17:46,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:17:46,698 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 20:17:46,699 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 20:17:46,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:17:46,781 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 20:17:46,783 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:17:46,925 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-23 20:17:46,925 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:17:46,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109550062] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:17:46,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:17:46,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-23 20:17:46,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539815583] [2024-10-23 20:17:46,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:17:46,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:17:46,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:17:46,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:17:46,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:17:46,928 INFO L87 Difference]: Start difference. First operand 658 states and 799 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 20:17:47,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:17:47,215 INFO L93 Difference]: Finished difference Result 1577 states and 1947 transitions. [2024-10-23 20:17:47,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:17:47,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 141 [2024-10-23 20:17:47,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:17:47,218 INFO L225 Difference]: With dead ends: 1577 [2024-10-23 20:17:47,218 INFO L226 Difference]: Without dead ends: 920 [2024-10-23 20:17:47,219 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:17:47,220 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 26 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 20:17:47,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 170 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 20:17:47,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2024-10-23 20:17:47,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 789. [2024-10-23 20:17:47,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 788 states have (on average 1.2106598984771573) internal successors, (954), 788 states have internal predecessors, (954), 0 states have call successors, (0), 0 states 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 20:17:47,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 954 transitions. [2024-10-23 20:17:47,248 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 954 transitions. Word has length 141 [2024-10-23 20:17:47,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:17:47,248 INFO L471 AbstractCegarLoop]: Abstraction has 789 states and 954 transitions. [2024-10-23 20:17:47,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 20:17:47,249 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 954 transitions. [2024-10-23 20:17:47,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-10-23 20:17:47,250 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:17:47,250 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:17:47,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-23 20:17:47,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:17:47,454 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:17:47,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:17:47,454 INFO L85 PathProgramCache]: Analyzing trace with hash 2130034564, now seen corresponding path program 1 times [2024-10-23 20:17:47,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:17:47,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614536082] [2024-10-23 20:17:47,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:17:47,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:17:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:17:47,579 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-23 20:17:47,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:17:47,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614536082] [2024-10-23 20:17:47,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614536082] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:17:47,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:17:47,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:17:47,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839198062] [2024-10-23 20:17:47,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:17:47,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:17:47,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:17:47,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:17:47,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:17:47,583 INFO L87 Difference]: Start difference. First operand 789 states and 954 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states 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 20:17:47,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:17:47,885 INFO L93 Difference]: Finished difference Result 1839 states and 2220 transitions. [2024-10-23 20:17:47,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:17:47,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 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 165 [2024-10-23 20:17:47,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:17:47,888 INFO L225 Difference]: With dead ends: 1839 [2024-10-23 20:17:47,888 INFO L226 Difference]: Without dead ends: 1051 [2024-10-23 20:17:47,889 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 20:17:47,891 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 86 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 20:17:47,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 45 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 20:17:47,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2024-10-23 20:17:47,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 920. [2024-10-23 20:17:47,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 919 states have (on average 1.1936887921653971) internal successors, (1097), 919 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states 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 20:17:47,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1097 transitions. [2024-10-23 20:17:47,909 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1097 transitions. Word has length 165 [2024-10-23 20:17:47,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:17:47,909 INFO L471 AbstractCegarLoop]: Abstraction has 920 states and 1097 transitions. [2024-10-23 20:17:47,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states 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 20:17:47,909 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1097 transitions. [2024-10-23 20:17:47,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-10-23 20:17:47,915 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:17:47,915 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:17:47,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 20:17:47,915 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:17:47,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:17:47,915 INFO L85 PathProgramCache]: Analyzing trace with hash -348987870, now seen corresponding path program 1 times [2024-10-23 20:17:47,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:17:47,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906412810] [2024-10-23 20:17:47,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:17:47,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:17:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:17:48,031 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-23 20:17:48,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:17:48,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906412810] [2024-10-23 20:17:48,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906412810] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:17:48,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:17:48,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 20:17:48,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309072157] [2024-10-23 20:17:48,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:17:48,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:17:48,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:17:48,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:17:48,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:17:48,034 INFO L87 Difference]: Start difference. First operand 920 states and 1097 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 20:17:48,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:17:48,342 INFO L93 Difference]: Finished difference Result 2363 states and 2779 transitions. [2024-10-23 20:17:48,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:17:48,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 174 [2024-10-23 20:17:48,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:17:48,346 INFO L225 Difference]: With dead ends: 2363 [2024-10-23 20:17:48,346 INFO L226 Difference]: Without dead ends: 1444 [2024-10-23 20:17:48,347 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 20:17:48,348 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 131 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 20:17:48,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 21 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 20:17:48,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2024-10-23 20:17:48,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 1182. [2024-10-23 20:17:48,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 1181 states have (on average 1.1769686706181202) internal successors, (1390), 1181 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states 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 20:17:48,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1390 transitions. [2024-10-23 20:17:48,364 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1390 transitions. Word has length 174 [2024-10-23 20:17:48,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:17:48,364 INFO L471 AbstractCegarLoop]: Abstraction has 1182 states and 1390 transitions. [2024-10-23 20:17:48,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 20:17:48,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1390 transitions. [2024-10-23 20:17:48,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-10-23 20:17:48,367 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:17:48,367 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-10-23 20:17:48,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 20:17:48,367 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:17:48,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:17:48,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1854959597, now seen corresponding path program 1 times [2024-10-23 20:17:48,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:17:48,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301328886] [2024-10-23 20:17:48,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:17:48,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:17:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:17:48,516 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-23 20:17:48,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:17:48,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301328886] [2024-10-23 20:17:48,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301328886] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:17:48,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:17:48,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 20:17:48,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298229264] [2024-10-23 20:17:48,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:17:48,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 20:17:48,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:17:48,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 20:17:48,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 20:17:48,518 INFO L87 Difference]: Start difference. First operand 1182 states and 1390 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states 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 20:17:49,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:17:49,009 INFO L93 Difference]: Finished difference Result 3018 states and 3542 transitions. [2024-10-23 20:17:49,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 20:17:49,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 180 [2024-10-23 20:17:49,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:17:49,014 INFO L225 Difference]: With dead ends: 3018 [2024-10-23 20:17:49,014 INFO L226 Difference]: Without dead ends: 1837 [2024-10-23 20:17:49,016 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 20:17:49,016 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 250 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 20:17:49,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 47 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 20:17:49,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1837 states. [2024-10-23 20:17:49,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1837 to 1575. [2024-10-23 20:17:49,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1575 states, 1574 states have (on average 1.164548919949174) internal successors, (1833), 1574 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states 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 20:17:49,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 1833 transitions. [2024-10-23 20:17:49,039 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 1833 transitions. Word has length 180 [2024-10-23 20:17:49,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:17:49,039 INFO L471 AbstractCegarLoop]: Abstraction has 1575 states and 1833 transitions. [2024-10-23 20:17:49,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states 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 20:17:49,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 1833 transitions. [2024-10-23 20:17:49,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-10-23 20:17:49,041 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:17:49,042 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, 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] [2024-10-23 20:17:49,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 20:17:49,042 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:17:49,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:17:49,042 INFO L85 PathProgramCache]: Analyzing trace with hash 370346772, now seen corresponding path program 1 times [2024-10-23 20:17:49,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:17:49,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325961759] [2024-10-23 20:17:49,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:17:49,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:17:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:17:49,207 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-23 20:17:49,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:17:49,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325961759] [2024-10-23 20:17:49,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325961759] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:17:49,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:17:49,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:17:49,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559270164] [2024-10-23 20:17:49,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:17:49,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:17:49,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:17:49,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:17:49,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:17:49,209 INFO L87 Difference]: Start difference. First operand 1575 states and 1833 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states 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 20:17:49,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:17:49,497 INFO L93 Difference]: Finished difference Result 3673 states and 4307 transitions. [2024-10-23 20:17:49,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:17:49,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 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 198 [2024-10-23 20:17:49,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:17:49,503 INFO L225 Difference]: With dead ends: 3673 [2024-10-23 20:17:49,503 INFO L226 Difference]: Without dead ends: 2099 [2024-10-23 20:17:49,504 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 20:17:49,505 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 84 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 20:17:49,505 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 50 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 20:17:49,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2099 states. [2024-10-23 20:17:49,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2099 to 1837. [2024-10-23 20:17:49,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1837 states, 1836 states have (on average 1.1492374727668846) internal successors, (2110), 1836 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states 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 20:17:49,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1837 states to 1837 states and 2110 transitions. [2024-10-23 20:17:49,529 INFO L78 Accepts]: Start accepts. Automaton has 1837 states and 2110 transitions. Word has length 198 [2024-10-23 20:17:49,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:17:49,529 INFO L471 AbstractCegarLoop]: Abstraction has 1837 states and 2110 transitions. [2024-10-23 20:17:49,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states 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 20:17:49,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1837 states and 2110 transitions. [2024-10-23 20:17:49,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-10-23 20:17:49,532 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:17:49,532 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-10-23 20:17:49,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-23 20:17:49,533 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:17:49,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:17:49,533 INFO L85 PathProgramCache]: Analyzing trace with hash 679548084, now seen corresponding path program 1 times [2024-10-23 20:17:49,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:17:49,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059736272] [2024-10-23 20:17:49,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:17:49,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:17:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:17:49,917 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 57 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:17:49,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:17:49,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059736272] [2024-10-23 20:17:49,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059736272] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:17:49,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482959005] [2024-10-23 20:17:49,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:17:49,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:17:49,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:17:49,919 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 20:17:49,924 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 20:17:50,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:17:50,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 20:17:50,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:17:50,220 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-10-23 20:17:50,220 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:17:50,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482959005] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:17:50,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:17:50,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-23 20:17:50,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563859937] [2024-10-23 20:17:50,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:17:50,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:17:50,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:17:50,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:17:50,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-23 20:17:50,221 INFO L87 Difference]: Start difference. First operand 1837 states and 2110 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 20:17:50,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:17:50,512 INFO L93 Difference]: Finished difference Result 4852 states and 5557 transitions. [2024-10-23 20:17:50,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:17:50,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 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 216 [2024-10-23 20:17:50,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:17:50,520 INFO L225 Difference]: With dead ends: 4852 [2024-10-23 20:17:50,520 INFO L226 Difference]: Without dead ends: 3016 [2024-10-23 20:17:50,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-23 20:17:50,523 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 40 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 20:17:50,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 29 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 20:17:50,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3016 states. [2024-10-23 20:17:50,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3016 to 2885. [2024-10-23 20:17:50,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2885 states, 2884 states have (on average 1.1341886269070736) internal successors, (3271), 2884 states have internal predecessors, (3271), 0 states have call successors, (0), 0 states 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 20:17:50,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2885 states to 2885 states and 3271 transitions. [2024-10-23 20:17:50,562 INFO L78 Accepts]: Start accepts. Automaton has 2885 states and 3271 transitions. Word has length 216 [2024-10-23 20:17:50,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:17:50,562 INFO L471 AbstractCegarLoop]: Abstraction has 2885 states and 3271 transitions. [2024-10-23 20:17:50,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 20:17:50,563 INFO L276 IsEmpty]: Start isEmpty. Operand 2885 states and 3271 transitions. [2024-10-23 20:17:50,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-10-23 20:17:50,566 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:17:50,567 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-23 20:17:50,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-23 20:17:50,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:17:50,771 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:17:50,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:17:50,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1282278047, now seen corresponding path program 1 times [2024-10-23 20:17:50,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:17:50,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244690683] [2024-10-23 20:17:50,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:17:50,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:17:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:17:50,993 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 150 proven. 6 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-10-23 20:17:50,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:17:50,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244690683] [2024-10-23 20:17:50,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244690683] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:17:50,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372164103] [2024-10-23 20:17:50,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:17:50,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:17:50,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:17:50,995 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 20:17:50,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-23 20:17:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:17:51,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 20:17:51,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:17:51,194 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-10-23 20:17:51,194 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:17:51,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372164103] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:17:51,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:17:51,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-23 20:17:51,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752041508] [2024-10-23 20:17:51,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:17:51,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:17:51,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:17:51,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:17:51,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:17:51,196 INFO L87 Difference]: Start difference. First operand 2885 states and 3271 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states 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 20:17:51,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:17:51,480 INFO L93 Difference]: Finished difference Result 4719 states and 5313 transitions. [2024-10-23 20:17:51,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:17:51,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 243 [2024-10-23 20:17:51,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:17:51,481 INFO L225 Difference]: With dead ends: 4719 [2024-10-23 20:17:51,481 INFO L226 Difference]: Without dead ends: 0 [2024-10-23 20:17:51,484 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 20:17:51,484 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 86 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 20:17:51,484 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 167 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 20:17:51,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-23 20:17:51,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-23 20:17:51,485 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 20:17:51,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-23 20:17:51,485 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 243 [2024-10-23 20:17:51,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:17:51,485 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-23 20:17:51,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states 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 20:17:51,485 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-23 20:17:51,485 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-23 20:17:51,487 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-23 20:17:51,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-23 20:17:51,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:17:51,691 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:17:51,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-23 20:17:51,868 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-23 20:17:51,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:17:51 BoogieIcfgContainer [2024-10-23 20:17:51,882 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-23 20:17:51,882 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-23 20:17:51,882 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-23 20:17:51,883 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-23 20:17:51,883 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:17:42" (3/4) ... [2024-10-23 20:17:51,885 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-23 20:17:51,907 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-10-23 20:17:51,908 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-10-23 20:17:51,909 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-23 20:17:51,909 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-23 20:17:52,028 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-23 20:17:52,028 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-23 20:17:52,028 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-23 20:17:52,029 INFO L158 Benchmark]: Toolchain (without parser) took 10850.75ms. Allocated memory was 151.0MB in the beginning and 360.7MB in the end (delta: 209.7MB). Free memory was 79.6MB in the beginning and 209.5MB in the end (delta: -129.9MB). Peak memory consumption was 82.3MB. Max. memory is 16.1GB. [2024-10-23 20:17:52,029 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 151.0MB. Free memory was 106.2MB in the beginning and 106.0MB in the end (delta: 156.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-23 20:17:52,029 INFO L158 Benchmark]: CACSL2BoogieTranslator took 475.74ms. Allocated memory is still 151.0MB. Free memory was 79.3MB in the beginning and 99.5MB in the end (delta: -20.2MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2024-10-23 20:17:52,029 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.47ms. Allocated memory is still 151.0MB. Free memory was 99.5MB in the beginning and 93.8MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-23 20:17:52,029 INFO L158 Benchmark]: Boogie Preprocessor took 100.35ms. Allocated memory is still 151.0MB. Free memory was 93.8MB in the beginning and 88.5MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-23 20:17:52,030 INFO L158 Benchmark]: RCFGBuilder took 947.81ms. Allocated memory was 151.0MB in the beginning and 207.6MB in the end (delta: 56.6MB). Free memory was 88.5MB in the beginning and 124.9MB in the end (delta: -36.4MB). Peak memory consumption was 61.2MB. Max. memory is 16.1GB. [2024-10-23 20:17:52,030 INFO L158 Benchmark]: TraceAbstraction took 9106.58ms. Allocated memory was 207.6MB in the beginning and 360.7MB in the end (delta: 153.1MB). Free memory was 123.8MB in the beginning and 222.1MB in the end (delta: -98.3MB). Peak memory consumption was 54.8MB. Max. memory is 16.1GB. [2024-10-23 20:17:52,030 INFO L158 Benchmark]: Witness Printer took 146.06ms. Allocated memory is still 360.7MB. Free memory was 222.1MB in the beginning and 209.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-23 20:17:52,031 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 151.0MB. Free memory was 106.2MB in the beginning and 106.0MB in the end (delta: 156.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 475.74ms. Allocated memory is still 151.0MB. Free memory was 79.3MB in the beginning and 99.5MB in the end (delta: -20.2MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.47ms. Allocated memory is still 151.0MB. Free memory was 99.5MB in the beginning and 93.8MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 100.35ms. Allocated memory is still 151.0MB. Free memory was 93.8MB in the beginning and 88.5MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 947.81ms. Allocated memory was 151.0MB in the beginning and 207.6MB in the end (delta: 56.6MB). Free memory was 88.5MB in the beginning and 124.9MB in the end (delta: -36.4MB). Peak memory consumption was 61.2MB. Max. memory is 16.1GB. * TraceAbstraction took 9106.58ms. Allocated memory was 207.6MB in the beginning and 360.7MB in the end (delta: 153.1MB). Free memory was 123.8MB in the beginning and 222.1MB in the end (delta: -98.3MB). Peak memory consumption was 54.8MB. Max. memory is 16.1GB. * Witness Printer took 146.06ms. Allocated memory is still 360.7MB. Free memory was 222.1MB in the beginning and 209.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. 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: 525]: 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, 136 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.9s, OverallIterations: 11, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1171 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1171 mSDsluCounter, 863 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 71 mSDsCounter, 595 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4074 IncrementalHoareTripleChecker+Invalid, 4669 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 595 mSolverCounterUnsat, 792 mSDtfsCounter, 4074 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 757 GetRequests, 732 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2885occurred in iteration=10, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 1572 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 2514 NumberOfCodeBlocks, 2514 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 2499 ConstructedInterpolants, 0 QuantifiedInterpolants, 12203 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1368 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 15 InterpolantComputations, 11 PerfectInterpolantSequences, 1176/1286 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: 593]: Loop Invariant Derived loop invariant: ((((((((a21 <= 0) && (a7 == 1)) || (((((a7 <= 0) && (a12 == 8)) && (a21 == 1)) && (a17 == 1)) && (a20 == 1))) || ((((((a12 == 8) && (a21 == 1)) && (a17 == 1)) && (a7 == 1)) && (a20 == 1)) && (a16 == 4))) || ((((a21 == 1) && (a7 == 1)) && (a20 == 1)) && (a8 != 13))) || ((a7 <= 0) && (a16 <= 5))) || (((a7 == 1) && (a16 <= 5)) && (a8 != 13))) || ((a7 <= 0) && (a8 != 13))) RESULT: Ultimate proved your program to be correct! [2024-10-23 20:17:52,059 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