./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem01_label23.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/eca-rers2012/Problem01_label23.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 9f1cd2841a16dfe2f8fe839faac013546a2b72431aadffbb7fe449f6c6dcaf65 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-21 21:18:41,795 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-21 21:18:41,867 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-21 21:18:41,871 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-21 21:18:41,871 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-21 21:18:41,894 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-21 21:18:41,894 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-21 21:18:41,894 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-21 21:18:41,895 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-21 21:18:41,896 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-21 21:18:41,897 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-21 21:18:41,897 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-21 21:18:41,897 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-21 21:18:41,899 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-21 21:18:41,899 INFO L153 SettingsManager]: * Use SBE=true [2024-11-21 21:18:41,899 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-21 21:18:41,900 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-21 21:18:41,900 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-21 21:18:41,900 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-21 21:18:41,900 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-21 21:18:41,900 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-21 21:18:41,901 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-21 21:18:41,902 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-21 21:18:41,903 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-21 21:18:41,903 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-21 21:18:41,903 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-21 21:18:41,903 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-21 21:18:41,903 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-21 21:18:41,904 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-21 21:18:41,904 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-21 21:18:41,904 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-21 21:18:41,904 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-21 21:18:41,904 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 21:18:41,904 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-21 21:18:41,905 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-21 21:18:41,905 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-21 21:18:41,905 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-21 21:18:41,905 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-21 21:18:41,905 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-21 21:18:41,905 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-21 21:18:41,905 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-21 21:18:41,907 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-21 21:18:41,907 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f1cd2841a16dfe2f8fe839faac013546a2b72431aadffbb7fe449f6c6dcaf65 [2024-11-21 21:18:42,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-21 21:18:42,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-21 21:18:42,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-21 21:18:42,152 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-21 21:18:42,152 INFO L274 PluginConnector]: CDTParser initialized [2024-11-21 21:18:42,153 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem01_label23.c [2024-11-21 21:18:43,372 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-21 21:18:43,580 INFO L384 CDTParser]: Found 1 translation units. [2024-11-21 21:18:43,580 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label23.c [2024-11-21 21:18:43,599 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cfe3faa5/92f0550f21b44da688203a4549102698/FLAGf0bd71b1a [2024-11-21 21:18:43,613 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cfe3faa5/92f0550f21b44da688203a4549102698 [2024-11-21 21:18:43,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-21 21:18:43,617 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-21 21:18:43,620 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-21 21:18:43,620 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-21 21:18:43,624 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-21 21:18:43,625 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:18:43" (1/1) ... [2024-11-21 21:18:43,626 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ffb9ec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:43, skipping insertion in model container [2024-11-21 21:18:43,626 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:18:43" (1/1) ... [2024-11-21 21:18:43,660 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-21 21:18:43,920 WARN L250 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_label23.c[17363,17376] [2024-11-21 21:18:43,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 21:18:43,956 INFO L200 MainTranslator]: Completed pre-run [2024-11-21 21:18:44,006 WARN L250 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_label23.c[17363,17376] [2024-11-21 21:18:44,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 21:18:44,046 INFO L204 MainTranslator]: Completed translation [2024-11-21 21:18:44,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:44 WrapperNode [2024-11-21 21:18:44,049 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-21 21:18:44,050 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-21 21:18:44,050 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-21 21:18:44,050 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-21 21:18:44,056 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:44" (1/1) ... [2024-11-21 21:18:44,078 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:44" (1/1) ... [2024-11-21 21:18:44,127 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 658 [2024-11-21 21:18:44,128 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-21 21:18:44,128 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-21 21:18:44,129 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-21 21:18:44,129 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-21 21:18:44,139 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:44" (1/1) ... [2024-11-21 21:18:44,140 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:44" (1/1) ... [2024-11-21 21:18:44,147 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:44" (1/1) ... [2024-11-21 21:18:44,172 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]. [2024-11-21 21:18:44,176 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:44" (1/1) ... [2024-11-21 21:18:44,176 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:44" (1/1) ... [2024-11-21 21:18:44,193 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:44" (1/1) ... [2024-11-21 21:18:44,204 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:44" (1/1) ... [2024-11-21 21:18:44,211 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:44" (1/1) ... [2024-11-21 21:18:44,217 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:44" (1/1) ... [2024-11-21 21:18:44,224 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-21 21:18:44,225 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-21 21:18:44,225 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-21 21:18:44,225 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-21 21:18:44,226 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:44" (1/1) ... [2024-11-21 21:18:44,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 21:18:44,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:18:44,257 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) [2024-11-21 21:18:44,260 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 [2024-11-21 21:18:44,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-21 21:18:44,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-21 21:18:44,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-21 21:18:44,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-21 21:18:44,389 INFO L238 CfgBuilder]: Building ICFG [2024-11-21 21:18:44,391 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-21 21:18:45,036 INFO L? ?]: Removed 75 outVars from TransFormulas that were not future-live. [2024-11-21 21:18:45,036 INFO L287 CfgBuilder]: Performing block encoding [2024-11-21 21:18:45,054 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-21 21:18:45,056 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-21 21:18:45,056 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:18:45 BoogieIcfgContainer [2024-11-21 21:18:45,056 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-21 21:18:45,059 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-21 21:18:45,059 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-21 21:18:45,062 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-21 21:18:45,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:18:43" (1/3) ... [2024-11-21 21:18:45,063 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d985073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:18:45, skipping insertion in model container [2024-11-21 21:18:45,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:18:44" (2/3) ... [2024-11-21 21:18:45,064 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d985073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:18:45, skipping insertion in model container [2024-11-21 21:18:45,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:18:45" (3/3) ... [2024-11-21 21:18:45,065 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label23.c [2024-11-21 21:18:45,078 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-21 21:18:45,078 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-21 21:18:45,132 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-21 21:18:45,138 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;@384f9c09, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 21:18:45,138 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-21 21:18:45,142 INFO L276 IsEmpty]: Start isEmpty. Operand has 198 states, 196 states have (on average 1.6683673469387754) internal successors, (327), 197 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:18:45,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-21 21:18:45,149 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:18:45,150 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] [2024-11-21 21:18:45,150 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:18:45,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:18:45,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1911993682, now seen corresponding path program 1 times [2024-11-21 21:18:45,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:18:45,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38120510] [2024-11-21 21:18:45,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:18:45,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:18:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:18:45,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:18:45,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:18:45,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38120510] [2024-11-21 21:18:45,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38120510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:18:45,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:18:45,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 21:18:45,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98648273] [2024-11-21 21:18:45,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:18:45,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:18:45,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:18:45,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:18:45,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 21:18:45,677 INFO L87 Difference]: Start difference. First operand has 198 states, 196 states have (on average 1.6683673469387754) internal successors, (327), 197 states have internal predecessors, (327), 0 states have call successors, (0), 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 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:18:46,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:18:46,256 INFO L93 Difference]: Finished difference Result 528 states and 915 transitions. [2024-11-21 21:18:46,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:18:46,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2024-11-21 21:18:46,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:18:46,269 INFO L225 Difference]: With dead ends: 528 [2024-11-21 21:18:46,269 INFO L226 Difference]: Without dead ends: 266 [2024-11-21 21:18:46,274 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 [2024-11-21 21:18:46,278 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 93 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-21 21:18:46,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 51 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-21 21:18:46,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-21 21:18:46,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2024-11-21 21:18:46,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 1.4566037735849056) internal successors, (386), 265 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:18:46,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 386 transitions. [2024-11-21 21:18:46,317 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 386 transitions. Word has length 95 [2024-11-21 21:18:46,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:18:46,317 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 386 transitions. [2024-11-21 21:18:46,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:18:46,318 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 386 transitions. [2024-11-21 21:18:46,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-21 21:18:46,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:18:46,320 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-21 21:18:46,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-21 21:18:46,321 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:18:46,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:18:46,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1657256635, now seen corresponding path program 1 times [2024-11-21 21:18:46,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:18:46,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438193015] [2024-11-21 21:18:46,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:18:46,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:18:46,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:18:46,435 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:18:46,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:18:46,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438193015] [2024-11-21 21:18:46,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438193015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:18:46,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:18:46,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 21:18:46,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710221403] [2024-11-21 21:18:46,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:18:46,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:18:46,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:18:46,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:18:46,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 21:18:46,439 INFO L87 Difference]: Start difference. First operand 266 states and 386 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:18:46,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:18:46,768 INFO L93 Difference]: Finished difference Result 792 states and 1153 transitions. [2024-11-21 21:18:46,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:18:46,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2024-11-21 21:18:46,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:18:46,772 INFO L225 Difference]: With dead ends: 792 [2024-11-21 21:18:46,772 INFO L226 Difference]: Without dead ends: 528 [2024-11-21 21:18:46,773 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 [2024-11-21 21:18:46,774 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 142 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-21 21:18:46,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 36 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-21 21:18:46,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2024-11-21 21:18:46,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2024-11-21 21:18:46,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 1.3795066413662238) internal successors, (727), 527 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:18:46,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 727 transitions. [2024-11-21 21:18:46,803 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 727 transitions. Word has length 101 [2024-11-21 21:18:46,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:18:46,803 INFO L471 AbstractCegarLoop]: Abstraction has 528 states and 727 transitions. [2024-11-21 21:18:46,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:18:46,803 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 727 transitions. [2024-11-21 21:18:46,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-21 21:18:46,805 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:18:46,806 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] [2024-11-21 21:18:46,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-21 21:18:46,806 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:18:46,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:18:46,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1528488005, now seen corresponding path program 1 times [2024-11-21 21:18:46,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:18:46,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000644287] [2024-11-21 21:18:46,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:18:46,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:18:46,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:18:46,929 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:18:46,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:18:46,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000644287] [2024-11-21 21:18:46,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000644287] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:18:46,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:18:46,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 21:18:46,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101136690] [2024-11-21 21:18:46,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:18:46,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:18:46,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:18:46,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:18:46,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 21:18:46,932 INFO L87 Difference]: Start difference. First operand 528 states and 727 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:18:47,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:18:47,253 INFO L93 Difference]: Finished difference Result 1447 states and 1991 transitions. [2024-11-21 21:18:47,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:18:47,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2024-11-21 21:18:47,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:18:47,257 INFO L225 Difference]: With dead ends: 1447 [2024-11-21 21:18:47,257 INFO L226 Difference]: Without dead ends: 921 [2024-11-21 21:18:47,258 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 [2024-11-21 21:18:47,259 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 39 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-21 21:18:47,259 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 211 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-21 21:18:47,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2024-11-21 21:18:47,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 659. [2024-11-21 21:18:47,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 658 states have (on average 1.3404255319148937) internal successors, (882), 658 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:18:47,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 882 transitions. [2024-11-21 21:18:47,273 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 882 transitions. Word has length 102 [2024-11-21 21:18:47,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:18:47,274 INFO L471 AbstractCegarLoop]: Abstraction has 659 states and 882 transitions. [2024-11-21 21:18:47,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:18:47,274 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 882 transitions. [2024-11-21 21:18:47,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-21 21:18:47,276 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:18:47,276 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:18:47,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-21 21:18:47,277 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:18:47,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:18:47,277 INFO L85 PathProgramCache]: Analyzing trace with hash 882295146, now seen corresponding path program 1 times [2024-11-21 21:18:47,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:18:47,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109847466] [2024-11-21 21:18:47,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:18:47,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:18:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:18:47,424 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:18:47,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:18:47,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109847466] [2024-11-21 21:18:47,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109847466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:18:47,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:18:47,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 21:18:47,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470539067] [2024-11-21 21:18:47,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:18:47,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:18:47,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:18:47,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:18:47,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 21:18:47,426 INFO L87 Difference]: Start difference. First operand 659 states and 882 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:18:47,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:18:47,735 INFO L93 Difference]: Finished difference Result 1971 states and 2641 transitions. [2024-11-21 21:18:47,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:18:47,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2024-11-21 21:18:47,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:18:47,738 INFO L225 Difference]: With dead ends: 1971 [2024-11-21 21:18:47,738 INFO L226 Difference]: Without dead ends: 1183 [2024-11-21 21:18:47,739 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 [2024-11-21 21:18:47,740 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 135 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-21 21:18:47,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 54 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-21 21:18:47,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2024-11-21 21:18:47,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1183. [2024-11-21 21:18:47,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1182 states have (on average 1.1742808798646363) internal successors, (1388), 1182 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:18:47,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1388 transitions. [2024-11-21 21:18:47,758 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1388 transitions. Word has length 108 [2024-11-21 21:18:47,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:18:47,758 INFO L471 AbstractCegarLoop]: Abstraction has 1183 states and 1388 transitions. [2024-11-21 21:18:47,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:18:47,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1388 transitions. [2024-11-21 21:18:47,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-21 21:18:47,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:18:47,760 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:18:47,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-21 21:18:47,761 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:18:47,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:18:47,761 INFO L85 PathProgramCache]: Analyzing trace with hash -203138944, now seen corresponding path program 1 times [2024-11-21 21:18:47,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:18:47,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997787232] [2024-11-21 21:18:47,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:18:47,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:18:47,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:18:47,885 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-21 21:18:47,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:18:47,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997787232] [2024-11-21 21:18:47,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997787232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:18:47,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:18:47,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 21:18:47,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49315960] [2024-11-21 21:18:47,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:18:47,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:18:47,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:18:47,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:18:47,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 21:18:47,887 INFO L87 Difference]: Start difference. First operand 1183 states and 1388 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:18:48,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:18:48,198 INFO L93 Difference]: Finished difference Result 2757 states and 3262 transitions. [2024-11-21 21:18:48,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:18:48,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 121 [2024-11-21 21:18:48,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:18:48,203 INFO L225 Difference]: With dead ends: 2757 [2024-11-21 21:18:48,203 INFO L226 Difference]: Without dead ends: 1707 [2024-11-21 21:18:48,204 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 [2024-11-21 21:18:48,205 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 130 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-21 21:18:48,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 39 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-21 21:18:48,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2024-11-21 21:18:48,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1445. [2024-11-21 21:18:48,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1444 states have (on average 1.175207756232687) internal successors, (1697), 1444 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:18:48,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1697 transitions. [2024-11-21 21:18:48,226 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1697 transitions. Word has length 121 [2024-11-21 21:18:48,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:18:48,226 INFO L471 AbstractCegarLoop]: Abstraction has 1445 states and 1697 transitions. [2024-11-21 21:18:48,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:18:48,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1697 transitions. [2024-11-21 21:18:48,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-21 21:18:48,228 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:18:48,228 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:18:48,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-21 21:18:48,228 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:18:48,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:18:48,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1604160105, now seen corresponding path program 1 times [2024-11-21 21:18:48,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:18:48,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395764925] [2024-11-21 21:18:48,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:18:48,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:18:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:18:48,337 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-21 21:18:48,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:18:48,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395764925] [2024-11-21 21:18:48,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395764925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:18:48,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:18:48,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 21:18:48,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336405009] [2024-11-21 21:18:48,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:18:48,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:18:48,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:18:48,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:18:48,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 21:18:48,339 INFO L87 Difference]: Start difference. First operand 1445 states and 1697 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:18:48,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:18:48,632 INFO L93 Difference]: Finished difference Result 2888 states and 3407 transitions. [2024-11-21 21:18:48,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:18:48,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 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 123 [2024-11-21 21:18:48,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:18:48,636 INFO L225 Difference]: With dead ends: 2888 [2024-11-21 21:18:48,636 INFO L226 Difference]: Without dead ends: 1576 [2024-11-21 21:18:48,637 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 [2024-11-21 21:18:48,638 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 119 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-21 21:18:48,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 54 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-21 21:18:48,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2024-11-21 21:18:48,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1576. [2024-11-21 21:18:48,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1575 states have (on average 1.1657142857142857) internal successors, (1836), 1575 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:18:48,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 1836 transitions. [2024-11-21 21:18:48,659 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 1836 transitions. Word has length 123 [2024-11-21 21:18:48,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:18:48,659 INFO L471 AbstractCegarLoop]: Abstraction has 1576 states and 1836 transitions. [2024-11-21 21:18:48,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:18:48,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 1836 transitions. [2024-11-21 21:18:48,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-21 21:18:48,661 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:18:48,661 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:18:48,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-21 21:18:48,662 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:18:48,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:18:48,662 INFO L85 PathProgramCache]: Analyzing trace with hash -823807695, now seen corresponding path program 1 times [2024-11-21 21:18:48,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:18:48,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311581925] [2024-11-21 21:18:48,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:18:48,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:18:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:18:48,804 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-21 21:18:48,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:18:48,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311581925] [2024-11-21 21:18:48,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311581925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:18:48,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:18:48,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 21:18:48,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708931989] [2024-11-21 21:18:48,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:18:48,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 21:18:48,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:18:48,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 21:18:48,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 21:18:48,805 INFO L87 Difference]: Start difference. First operand 1576 states and 1836 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:18:49,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:18:49,314 INFO L93 Difference]: Finished difference Result 3281 states and 3836 transitions. [2024-11-21 21:18:49,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 21:18:49,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2024-11-21 21:18:49,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:18:49,320 INFO L225 Difference]: With dead ends: 3281 [2024-11-21 21:18:49,320 INFO L226 Difference]: Without dead ends: 1838 [2024-11-21 21:18:49,322 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 [2024-11-21 21:18:49,323 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 251 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-21 21:18:49,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 58 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-21 21:18:49,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2024-11-21 21:18:49,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1707. [2024-11-21 21:18:49,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1706 states have (on average 1.1547479484173506) internal successors, (1970), 1706 states have internal predecessors, (1970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:18:49,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 1970 transitions. [2024-11-21 21:18:49,347 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 1970 transitions. Word has length 127 [2024-11-21 21:18:49,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:18:49,348 INFO L471 AbstractCegarLoop]: Abstraction has 1707 states and 1970 transitions. [2024-11-21 21:18:49,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:18:49,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 1970 transitions. [2024-11-21 21:18:49,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-21 21:18:49,350 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:18:49,350 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:18:49,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-21 21:18:49,351 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:18:49,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:18:49,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1539141362, now seen corresponding path program 1 times [2024-11-21 21:18:49,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:18:49,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185048849] [2024-11-21 21:18:49,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:18:49,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:18:49,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:18:49,493 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:18:49,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:18:49,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185048849] [2024-11-21 21:18:49,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185048849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:18:49,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 21:18:49,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 21:18:49,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456358828] [2024-11-21 21:18:49,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:18:49,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 21:18:49,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:18:49,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 21:18:49,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 21:18:49,494 INFO L87 Difference]: Start difference. First operand 1707 states and 1970 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:18:49,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:18:49,960 INFO L93 Difference]: Finished difference Result 3674 states and 4270 transitions. [2024-11-21 21:18:49,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 21:18:49,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2024-11-21 21:18:49,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:18:49,965 INFO L225 Difference]: With dead ends: 3674 [2024-11-21 21:18:49,965 INFO L226 Difference]: Without dead ends: 1969 [2024-11-21 21:18:49,967 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 [2024-11-21 21:18:49,968 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 218 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-21 21:18:49,969 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 58 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-21 21:18:49,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1969 states. [2024-11-21 21:18:49,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1969 to 1707. [2024-11-21 21:18:49,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1706 states have (on average 1.1395076201641265) internal successors, (1944), 1706 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:18:49,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 1944 transitions. [2024-11-21 21:18:49,992 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 1944 transitions. Word has length 145 [2024-11-21 21:18:49,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:18:49,993 INFO L471 AbstractCegarLoop]: Abstraction has 1707 states and 1944 transitions. [2024-11-21 21:18:49,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:18:49,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 1944 transitions. [2024-11-21 21:18:49,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-21 21:18:49,995 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:18:49,995 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:18:49,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-21 21:18:49,995 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:18:49,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:18:49,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1299866086, now seen corresponding path program 1 times [2024-11-21 21:18:49,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:18:49,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763837704] [2024-11-21 21:18:49,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:18:49,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:18:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:18:50,261 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 64 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 21:18:50,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:18:50,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763837704] [2024-11-21 21:18:50,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763837704] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:18:50,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795549500] [2024-11-21 21:18:50,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:18:50,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:18:50,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:18:50,264 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) [2024-11-21 21:18:50,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-21 21:18:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:18:50,342 INFO L255 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 21:18:50,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:18:50,549 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-11-21 21:18:50,549 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:18:50,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795549500] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:18:50,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:18:50,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-11-21 21:18:50,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731562871] [2024-11-21 21:18:50,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:18:50,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:18:50,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:18:50,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:18:50,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:18:50,551 INFO L87 Difference]: Start difference. First operand 1707 states and 1944 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:18:50,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:18:50,864 INFO L93 Difference]: Finished difference Result 4591 states and 5246 transitions. [2024-11-21 21:18:50,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:18:50,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 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 161 [2024-11-21 21:18:50,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:18:50,871 INFO L225 Difference]: With dead ends: 4591 [2024-11-21 21:18:50,871 INFO L226 Difference]: Without dead ends: 2886 [2024-11-21 21:18:50,872 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:18:50,873 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 59 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-21 21:18:50,873 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 30 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-21 21:18:50,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2024-11-21 21:18:50,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 2886. [2024-11-21 21:18:50,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2885 states have (on average 1.1209705372616985) internal successors, (3234), 2885 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:18:50,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 3234 transitions. [2024-11-21 21:18:50,906 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 3234 transitions. Word has length 161 [2024-11-21 21:18:50,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:18:50,906 INFO L471 AbstractCegarLoop]: Abstraction has 2886 states and 3234 transitions. [2024-11-21 21:18:50,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:18:50,907 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 3234 transitions. [2024-11-21 21:18:50,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-21 21:18:50,909 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:18:50,910 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:18:50,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-21 21:18:51,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:18:51,111 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:18:51,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:18:51,111 INFO L85 PathProgramCache]: Analyzing trace with hash 2142218944, now seen corresponding path program 1 times [2024-11-21 21:18:51,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:18:51,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251975888] [2024-11-21 21:18:51,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:18:51,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:18:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:18:51,332 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 101 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-21 21:18:51,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:18:51,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251975888] [2024-11-21 21:18:51,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251975888] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:18:51,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211762602] [2024-11-21 21:18:51,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:18:51,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:18:51,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:18:51,335 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) [2024-11-21 21:18:51,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-21 21:18:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:18:51,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 21:18:51,441 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:18:51,541 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-21 21:18:51,542 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:18:51,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211762602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:18:51,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:18:51,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 21:18:51,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450204676] [2024-11-21 21:18:51,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:18:51,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:18:51,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:18:51,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:18:51,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:18:51,544 INFO L87 Difference]: Start difference. First operand 2886 states and 3234 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:18:51,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:18:51,823 INFO L93 Difference]: Finished difference Result 5901 states and 6618 transitions. [2024-11-21 21:18:51,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:18:51,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 177 [2024-11-21 21:18:51,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:18:51,831 INFO L225 Difference]: With dead ends: 5901 [2024-11-21 21:18:51,831 INFO L226 Difference]: Without dead ends: 3017 [2024-11-21 21:18:51,833 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:18:51,834 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 43 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-21 21:18:51,834 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 164 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-21 21:18:51,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3017 states. [2024-11-21 21:18:51,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3017 to 2755. [2024-11-21 21:18:51,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2755 states, 2754 states have (on average 1.0896877269426288) internal successors, (3001), 2754 states have internal predecessors, (3001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:18:51,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2755 states to 2755 states and 3001 transitions. [2024-11-21 21:18:51,868 INFO L78 Accepts]: Start accepts. Automaton has 2755 states and 3001 transitions. Word has length 177 [2024-11-21 21:18:51,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:18:51,868 INFO L471 AbstractCegarLoop]: Abstraction has 2755 states and 3001 transitions. [2024-11-21 21:18:51,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:18:51,869 INFO L276 IsEmpty]: Start isEmpty. Operand 2755 states and 3001 transitions. [2024-11-21 21:18:51,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-21 21:18:51,872 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 21:18:51,872 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, 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] [2024-11-21 21:18:51,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-21 21:18:52,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-21 21:18:52,073 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 21:18:52,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 21:18:52,073 INFO L85 PathProgramCache]: Analyzing trace with hash -2072873657, now seen corresponding path program 1 times [2024-11-21 21:18:52,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 21:18:52,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989492631] [2024-11-21 21:18:52,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:18:52,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 21:18:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:18:52,289 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 132 proven. 11 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-21 21:18:52,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 21:18:52,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989492631] [2024-11-21 21:18:52,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989492631] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 21:18:52,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239753633] [2024-11-21 21:18:52,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 21:18:52,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:18:52,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 21:18:52,292 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) [2024-11-21 21:18:52,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-21 21:18:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 21:18:52,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-21 21:18:52,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 21:18:52,486 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-21 21:18:52,486 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 21:18:52,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239753633] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 21:18:52,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 21:18:52,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 21:18:52,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988736277] [2024-11-21 21:18:52,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 21:18:52,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 21:18:52,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 21:18:52,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 21:18:52,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:18:52,487 INFO L87 Difference]: Start difference. First operand 2755 states and 3001 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:18:52,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 21:18:52,762 INFO L93 Difference]: Finished difference Result 5375 states and 5871 transitions. [2024-11-21 21:18:52,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 21:18:52,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 194 [2024-11-21 21:18:52,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 21:18:52,763 INFO L225 Difference]: With dead ends: 5375 [2024-11-21 21:18:52,763 INFO L226 Difference]: Without dead ends: 0 [2024-11-21 21:18:52,784 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 21:18:52,785 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 50 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-21 21:18:52,785 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 160 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-21 21:18:52,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-21 21:18:52,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-21 21:18:52,786 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) [2024-11-21 21:18:52,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-21 21:18:52,786 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 194 [2024-11-21 21:18:52,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 21:18:52,786 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-21 21:18:52,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 21:18:52,786 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-21 21:18:52,786 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-21 21:18:52,789 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-21 21:18:52,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-21 21:18:52,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 21:18:52,995 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 21:18:52,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-21 21:18:53,196 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-21 21:18:53,212 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 09:18:53 BoogieIcfgContainer [2024-11-21 21:18:53,212 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-21 21:18:53,212 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-21 21:18:53,212 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-21 21:18:53,212 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-21 21:18:53,213 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:18:45" (3/4) ... [2024-11-21 21:18:53,214 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-21 21:18:53,229 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-21 21:18:53,230 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-21 21:18:53,232 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-21 21:18:53,233 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-21 21:18:53,353 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-21 21:18:53,354 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-21 21:18:53,354 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-21 21:18:53,354 INFO L158 Benchmark]: Toolchain (without parser) took 9736.95ms. Allocated memory was 161.5MB in the beginning and 312.5MB in the end (delta: 151.0MB). Free memory was 91.7MB in the beginning and 207.0MB in the end (delta: -115.3MB). Peak memory consumption was 38.2MB. Max. memory is 16.1GB. [2024-11-21 21:18:53,354 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 161.5MB. Free memory is still 126.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-21 21:18:53,354 INFO L158 Benchmark]: CACSL2BoogieTranslator took 429.59ms. Allocated memory is still 161.5MB. Free memory was 91.7MB in the beginning and 62.0MB in the end (delta: 29.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-11-21 21:18:53,355 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.36ms. Allocated memory is still 161.5MB. Free memory was 62.0MB in the beginning and 56.0MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-21 21:18:53,355 INFO L158 Benchmark]: Boogie Preprocessor took 95.96ms. Allocated memory is still 161.5MB. Free memory was 56.0MB in the beginning and 50.6MB in the end (delta: 5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-21 21:18:53,355 INFO L158 Benchmark]: RCFGBuilder took 831.35ms. Allocated memory is still 161.5MB. Free memory was 50.6MB in the beginning and 125.6MB in the end (delta: -75.0MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2024-11-21 21:18:53,355 INFO L158 Benchmark]: TraceAbstraction took 8152.72ms. Allocated memory was 161.5MB in the beginning and 312.5MB in the end (delta: 151.0MB). Free memory was 124.5MB in the beginning and 218.5MB in the end (delta: -94.0MB). Peak memory consumption was 55.9MB. Max. memory is 16.1GB. [2024-11-21 21:18:53,355 INFO L158 Benchmark]: Witness Printer took 141.65ms. Allocated memory is still 312.5MB. Free memory was 218.5MB in the beginning and 207.0MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-21 21:18:53,358 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 161.5MB. Free memory is still 126.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 429.59ms. Allocated memory is still 161.5MB. Free memory was 91.7MB in the beginning and 62.0MB in the end (delta: 29.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.36ms. Allocated memory is still 161.5MB. Free memory was 62.0MB in the beginning and 56.0MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 95.96ms. Allocated memory is still 161.5MB. Free memory was 56.0MB in the beginning and 50.6MB in the end (delta: 5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 831.35ms. Allocated memory is still 161.5MB. Free memory was 50.6MB in the beginning and 125.6MB in the end (delta: -75.0MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. * TraceAbstraction took 8152.72ms. Allocated memory was 161.5MB in the beginning and 312.5MB in the end (delta: 151.0MB). Free memory was 124.5MB in the beginning and 218.5MB in the end (delta: -94.0MB). Peak memory consumption was 55.9MB. Max. memory is 16.1GB. * Witness Printer took 141.65ms. Allocated memory is still 312.5MB. Free memory was 218.5MB in the beginning and 207.0MB in the end (delta: 11.5MB). 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: 471]: 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, 198 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.9s, OverallIterations: 11, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1279 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1279 mSDsluCounter, 915 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 72 mSDsCounter, 562 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4218 IncrementalHoareTripleChecker+Invalid, 4780 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 562 mSolverCounterUnsat, 843 mSDtfsCounter, 4218 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 561 GetRequests, 542 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2886occurred in iteration=9, 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, 1179 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 1986 NumberOfCodeBlocks, 1986 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 1972 ConstructedInterpolants, 0 QuantifiedInterpolants, 4698 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1060 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 14 InterpolantComputations, 11 PerfectInterpolantSequences, 1008/1059 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: ((((((((((((((a7 <= 0) && (a20 <= 0)) && (a21 == 1)) && (a17 == 1)) || ((((a20 <= 0) && (a21 == 1)) && (a17 == 1)) && (a16 <= 5))) || (((a8 <= 13) && (a21 == 1)) && (a17 == 1))) || (((a8 <= 13) && (a7 != 1)) && (a20 == 1))) || ((a20 <= 0) && (a17 <= 0))) || (((a8 <= 13) && (a17 == 1)) && (a20 == 1))) || (((5 <= a16) && (a17 <= 0)) && (a20 == 1))) || ((a8 <= 13) && (a17 <= 0))) || (((a7 <= 0) && (a17 <= 0)) && (a20 == 1))) || ((a20 <= 0) && (a8 <= 13))) || (((((a7 <= 0) && (a21 == 1)) && (a17 == 1)) && (a16 <= 5)) && (a20 == 1))) RESULT: Ultimate proved your program to be correct! [2024-11-21 21:18:53,373 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