./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de42.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de42.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 6b13c8359dfc3fa3ad0e51c85ccdf97c793022ae2240daea5433bdb872a277a9 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 01:54:57,018 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 01:54:57,095 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 01:54:57,099 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 01:54:57,099 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 01:54:57,130 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 01:54:57,131 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 01:54:57,132 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 01:54:57,133 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 01:54:57,134 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 01:54:57,134 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 01:54:57,135 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 01:54:57,135 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 01:54:57,136 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 01:54:57,139 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 01:54:57,139 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 01:54:57,139 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 01:54:57,139 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 01:54:57,140 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 01:54:57,140 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 01:54:57,140 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 01:54:57,141 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 01:54:57,141 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 01:54:57,142 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 01:54:57,142 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 01:54:57,146 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 01:54:57,146 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 01:54:57,147 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 01:54:57,147 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 01:54:57,147 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 01:54:57,147 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 01:54:57,147 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 01:54:57,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 01:54:57,148 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 01:54:57,148 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 01:54:57,148 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 01:54:57,149 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 01:54:57,149 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 01:54:57,149 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 01:54:57,149 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 01:54:57,150 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 01:54:57,150 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 01:54:57,150 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b13c8359dfc3fa3ad0e51c85ccdf97c793022ae2240daea5433bdb872a277a9 [2024-10-11 01:54:57,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 01:54:57,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 01:54:57,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 01:54:57,416 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 01:54:57,416 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 01:54:57,417 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de42.c [2024-10-11 01:54:58,794 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 01:54:58,969 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 01:54:58,969 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de42.c [2024-10-11 01:54:58,975 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/2910a17bd/a5a24be587ee46259151444095e3067f/FLAG87b6fded4 [2024-10-11 01:54:58,986 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/2910a17bd/a5a24be587ee46259151444095e3067f [2024-10-11 01:54:58,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 01:54:58,989 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 01:54:58,990 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 01:54:58,990 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 01:54:58,995 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 01:54:58,996 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 01:54:58" (1/1) ... [2024-10-11 01:54:58,996 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fc108f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:54:58, skipping insertion in model container [2024-10-11 01:54:58,997 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 01:54:58" (1/1) ... [2024-10-11 01:54:59,014 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 01:54:59,181 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de42.c[368,381] [2024-10-11 01:54:59,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 01:54:59,208 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 01:54:59,218 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de42.c[368,381] [2024-10-11 01:54:59,223 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 01:54:59,240 INFO L204 MainTranslator]: Completed translation [2024-10-11 01:54:59,241 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:54:59 WrapperNode [2024-10-11 01:54:59,241 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 01:54:59,242 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 01:54:59,242 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 01:54:59,242 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 01:54:59,249 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:54:59" (1/1) ... [2024-10-11 01:54:59,255 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:54:59" (1/1) ... [2024-10-11 01:54:59,272 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2024-10-11 01:54:59,273 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 01:54:59,273 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 01:54:59,274 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 01:54:59,274 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 01:54:59,299 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:54:59" (1/1) ... [2024-10-11 01:54:59,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:54:59" (1/1) ... [2024-10-11 01:54:59,304 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:54:59" (1/1) ... [2024-10-11 01:54:59,326 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 01:54:59,326 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:54:59" (1/1) ... [2024-10-11 01:54:59,327 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:54:59" (1/1) ... [2024-10-11 01:54:59,336 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:54:59" (1/1) ... [2024-10-11 01:54:59,353 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:54:59" (1/1) ... [2024-10-11 01:54:59,354 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:54:59" (1/1) ... [2024-10-11 01:54:59,354 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:54:59" (1/1) ... [2024-10-11 01:54:59,356 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 01:54:59,360 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 01:54:59,361 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 01:54:59,361 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 01:54:59,362 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:54:59" (1/1) ... [2024-10-11 01:54:59,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 01:54:59,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:54:59,395 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 01:54:59,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 01:54:59,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 01:54:59,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 01:54:59,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 01:54:59,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 01:54:59,482 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 01:54:59,484 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 01:54:59,586 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-10-11 01:54:59,586 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 01:54:59,608 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 01:54:59,608 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-11 01:54:59,608 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 01:54:59 BoogieIcfgContainer [2024-10-11 01:54:59,608 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 01:54:59,613 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 01:54:59,613 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 01:54:59,616 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 01:54:59,616 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 01:54:58" (1/3) ... [2024-10-11 01:54:59,617 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d1d6051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 01:54:59, skipping insertion in model container [2024-10-11 01:54:59,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:54:59" (2/3) ... [2024-10-11 01:54:59,617 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d1d6051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 01:54:59, skipping insertion in model container [2024-10-11 01:54:59,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 01:54:59" (3/3) ... [2024-10-11 01:54:59,618 INFO L112 eAbstractionObserver]: Analyzing ICFG in-de42.c [2024-10-11 01:54:59,633 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 01:54:59,634 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 01:54:59,680 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 01:54:59,687 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;@3c2ff724, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 01:54:59,687 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 01:54:59,692 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:54:59,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-11 01:54:59,698 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:54:59,698 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:54:59,699 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:54:59,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:54:59,704 INFO L85 PathProgramCache]: Analyzing trace with hash 365450614, now seen corresponding path program 1 times [2024-10-11 01:54:59,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:54:59,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865739887] [2024-10-11 01:54:59,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:54:59,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:54:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:54:59,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:54:59,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:54:59,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865739887] [2024-10-11 01:54:59,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865739887] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:54:59,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:54:59,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 01:54:59,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130375422] [2024-10-11 01:54:59,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:54:59,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 01:54:59,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:54:59,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 01:54:59,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 01:54:59,872 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:54:59,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:54:59,887 INFO L93 Difference]: Finished difference Result 22 states and 36 transitions. [2024-10-11 01:54:59,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 01:54:59,889 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2024-10-11 01:54:59,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:54:59,894 INFO L225 Difference]: With dead ends: 22 [2024-10-11 01:54:59,894 INFO L226 Difference]: Without dead ends: 10 [2024-10-11 01:54:59,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 01:54:59,899 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:54:59,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:54:59,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-10-11 01:54:59,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2024-10-11 01:54:59,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:54:59,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2024-10-11 01:54:59,924 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 13 transitions. Word has length 9 [2024-10-11 01:54:59,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:54:59,924 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 13 transitions. [2024-10-11 01:54:59,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:54:59,924 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 13 transitions. [2024-10-11 01:54:59,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-11 01:54:59,925 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:54:59,925 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:54:59,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 01:54:59,926 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:54:59,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:54:59,927 INFO L85 PathProgramCache]: Analyzing trace with hash 365331450, now seen corresponding path program 1 times [2024-10-11 01:54:59,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:54:59,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816818699] [2024-10-11 01:54:59,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:54:59,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:54:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:00,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:55:00,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:00,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816818699] [2024-10-11 01:55:00,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816818699] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:55:00,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:55:00,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 01:55:00,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183475919] [2024-10-11 01:55:00,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:55:00,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 01:55:00,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:55:00,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 01:55:00,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-11 01:55:00,637 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. Second operand has 8 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:00,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:55:00,755 INFO L93 Difference]: Finished difference Result 24 states and 33 transitions. [2024-10-11 01:55:00,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 01:55:00,756 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2024-10-11 01:55:00,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:55:00,757 INFO L225 Difference]: With dead ends: 24 [2024-10-11 01:55:00,757 INFO L226 Difference]: Without dead ends: 16 [2024-10-11 01:55:00,758 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-10-11 01:55:00,760 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:55:00,760 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 32 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:55:00,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-10-11 01:55:00,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-10-11 01:55:00,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:00,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2024-10-11 01:55:00,771 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 22 transitions. Word has length 9 [2024-10-11 01:55:00,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:55:00,771 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 22 transitions. [2024-10-11 01:55:00,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:00,771 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 22 transitions. [2024-10-11 01:55:00,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-11 01:55:00,772 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:55:00,773 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:55:00,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 01:55:00,773 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:55:00,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:55:00,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1512709003, now seen corresponding path program 1 times [2024-10-11 01:55:00,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:55:00,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34519582] [2024-10-11 01:55:00,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:00,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:55:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:00,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:55:00,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:00,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34519582] [2024-10-11 01:55:00,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34519582] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:55:00,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:55:00,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 01:55:00,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354454500] [2024-10-11 01:55:00,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:55:00,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 01:55:00,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:55:00,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 01:55:00,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 01:55:00,857 INFO L87 Difference]: Start difference. First operand 16 states and 22 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:00,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:55:00,880 INFO L93 Difference]: Finished difference Result 24 states and 33 transitions. [2024-10-11 01:55:00,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 01:55:00,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2024-10-11 01:55:00,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:55:00,881 INFO L225 Difference]: With dead ends: 24 [2024-10-11 01:55:00,885 INFO L226 Difference]: Without dead ends: 15 [2024-10-11 01:55:00,886 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 01:55:00,887 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:55:00,887 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 17 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:55:00,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-10-11 01:55:00,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-10-11 01:55:00,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:00,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2024-10-11 01:55:00,895 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 20 transitions. Word has length 10 [2024-10-11 01:55:00,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:55:00,895 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 20 transitions. [2024-10-11 01:55:00,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:00,896 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 20 transitions. [2024-10-11 01:55:00,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-11 01:55:00,896 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:55:00,896 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:55:00,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 01:55:00,897 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:55:00,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:55:00,897 INFO L85 PathProgramCache]: Analyzing trace with hash -109880604, now seen corresponding path program 1 times [2024-10-11 01:55:00,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:55:00,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030921500] [2024-10-11 01:55:00,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:00,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:55:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:00,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:55:00,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:00,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030921500] [2024-10-11 01:55:00,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030921500] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:55:00,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:55:00,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 01:55:00,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038617533] [2024-10-11 01:55:00,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:55:00,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 01:55:00,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:55:00,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 01:55:00,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 01:55:00,978 INFO L87 Difference]: Start difference. First operand 15 states and 20 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:01,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:55:01,012 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2024-10-11 01:55:01,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 01:55:01,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2024-10-11 01:55:01,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:55:01,014 INFO L225 Difference]: With dead ends: 20 [2024-10-11 01:55:01,014 INFO L226 Difference]: Without dead ends: 11 [2024-10-11 01:55:01,014 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 01:55:01,017 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:55:01,018 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 23 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:55:01,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2024-10-11 01:55:01,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2024-10-11 01:55:01,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:01,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2024-10-11 01:55:01,024 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 14 transitions. Word has length 10 [2024-10-11 01:55:01,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:55:01,024 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 14 transitions. [2024-10-11 01:55:01,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:01,024 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 14 transitions. [2024-10-11 01:55:01,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-11 01:55:01,025 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:55:01,025 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:55:01,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 01:55:01,025 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:55:01,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:55:01,026 INFO L85 PathProgramCache]: Analyzing trace with hash -694348189, now seen corresponding path program 1 times [2024-10-11 01:55:01,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:55:01,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814834104] [2024-10-11 01:55:01,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:01,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:55:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:01,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:55:01,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:01,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814834104] [2024-10-11 01:55:01,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814834104] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:55:01,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610535229] [2024-10-11 01:55:01,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:01,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:01,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:55:01,123 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:55:01,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 01:55:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:01,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 01:55:01,180 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:55:01,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:55:01,220 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:55:01,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:55:01,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610535229] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:55:01,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:55:01,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-10-11 01:55:01,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431727751] [2024-10-11 01:55:01,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:55:01,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 01:55:01,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:55:01,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 01:55:01,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-11 01:55:01,281 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:01,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:55:01,408 INFO L93 Difference]: Finished difference Result 34 states and 52 transitions. [2024-10-11 01:55:01,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 01:55:01,409 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 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 10 [2024-10-11 01:55:01,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:55:01,410 INFO L225 Difference]: With dead ends: 34 [2024-10-11 01:55:01,411 INFO L226 Difference]: Without dead ends: 28 [2024-10-11 01:55:01,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-10-11 01:55:01,415 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 25 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:55:01,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 35 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:55:01,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-10-11 01:55:01,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2024-10-11 01:55:01,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:01,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2024-10-11 01:55:01,426 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 10 [2024-10-11 01:55:01,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:55:01,427 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2024-10-11 01:55:01,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:01,428 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2024-10-11 01:55:01,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-11 01:55:01,429 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:55:01,429 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:55:01,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 01:55:01,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:01,633 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:55:01,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:55:01,636 INFO L85 PathProgramCache]: Analyzing trace with hash 490702580, now seen corresponding path program 1 times [2024-10-11 01:55:01,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:55:01,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043070460] [2024-10-11 01:55:01,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:01,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:55:01,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:01,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 01:55:01,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:01,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043070460] [2024-10-11 01:55:01,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043070460] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:55:01,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059486354] [2024-10-11 01:55:01,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:01,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:01,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:55:01,759 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:55:01,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 01:55:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:01,805 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 01:55:01,806 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:55:01,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:55:01,882 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:55:01,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:55:01,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059486354] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:55:01,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:55:01,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-10-11 01:55:01,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918203590] [2024-10-11 01:55:01,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:55:01,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 01:55:01,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:55:01,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 01:55:01,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-11 01:55:01,917 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:01,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:55:01,981 INFO L93 Difference]: Finished difference Result 56 states and 83 transitions. [2024-10-11 01:55:01,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 01:55:01,982 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 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 12 [2024-10-11 01:55:01,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:55:01,983 INFO L225 Difference]: With dead ends: 56 [2024-10-11 01:55:01,983 INFO L226 Difference]: Without dead ends: 51 [2024-10-11 01:55:01,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 01:55:01,984 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:55:01,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 34 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:55:01,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-10-11 01:55:01,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2024-10-11 01:55:01,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.5) internal successors, (66), 44 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:01,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 66 transitions. [2024-10-11 01:55:01,999 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 66 transitions. Word has length 12 [2024-10-11 01:55:01,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:55:01,999 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 66 transitions. [2024-10-11 01:55:02,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:02,000 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 66 transitions. [2024-10-11 01:55:02,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-11 01:55:02,001 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:55:02,001 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:55:02,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 01:55:02,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:02,206 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:55:02,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:55:02,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1966423798, now seen corresponding path program 1 times [2024-10-11 01:55:02,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:55:02,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366773986] [2024-10-11 01:55:02,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:02,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:55:02,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:02,640 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:55:02,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:02,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366773986] [2024-10-11 01:55:02,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366773986] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:55:02,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091065249] [2024-10-11 01:55:02,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:02,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:02,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:55:02,643 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:55:02,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 01:55:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:02,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-11 01:55:02,697 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:55:02,923 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:55:02,924 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:55:03,291 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:55:03,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091065249] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:55:03,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:55:03,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-10-11 01:55:03,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943425425] [2024-10-11 01:55:03,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:55:03,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 01:55:03,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:55:03,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 01:55:03,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2024-10-11 01:55:03,294 INFO L87 Difference]: Start difference. First operand 45 states and 66 transitions. Second operand has 23 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:03,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:55:03,749 INFO L93 Difference]: Finished difference Result 56 states and 77 transitions. [2024-10-11 01:55:03,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 01:55:03,750 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 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 13 [2024-10-11 01:55:03,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:55:03,751 INFO L225 Difference]: With dead ends: 56 [2024-10-11 01:55:03,751 INFO L226 Difference]: Without dead ends: 34 [2024-10-11 01:55:03,751 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=134, Invalid=736, Unknown=0, NotChecked=0, Total=870 [2024-10-11 01:55:03,752 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 17 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:55:03,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 52 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:55:03,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-10-11 01:55:03,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2024-10-11 01:55:03,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.53125) internal successors, (49), 32 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:03,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 49 transitions. [2024-10-11 01:55:03,770 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 49 transitions. Word has length 13 [2024-10-11 01:55:03,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:55:03,771 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 49 transitions. [2024-10-11 01:55:03,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:03,771 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 49 transitions. [2024-10-11 01:55:03,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-11 01:55:03,771 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:55:03,771 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:55:03,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 01:55:03,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:03,972 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:55:03,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:55:03,973 INFO L85 PathProgramCache]: Analyzing trace with hash -536062406, now seen corresponding path program 2 times [2024-10-11 01:55:03,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:55:03,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587760521] [2024-10-11 01:55:03,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:03,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:55:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:04,055 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:55:04,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:04,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587760521] [2024-10-11 01:55:04,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587760521] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:55:04,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807026621] [2024-10-11 01:55:04,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 01:55:04,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:04,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:55:04,058 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:55:04,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 01:55:04,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:55:04,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:55:04,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 01:55:04,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:55:04,128 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:55:04,129 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:55:04,231 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:55:04,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807026621] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:55:04,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:55:04,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-10-11 01:55:04,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570456058] [2024-10-11 01:55:04,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:55:04,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 01:55:04,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:55:04,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 01:55:04,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-10-11 01:55:04,236 INFO L87 Difference]: Start difference. First operand 33 states and 49 transitions. Second operand has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:04,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:55:04,800 INFO L93 Difference]: Finished difference Result 140 states and 244 transitions. [2024-10-11 01:55:04,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-11 01:55:04,801 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 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 13 [2024-10-11 01:55:04,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:55:04,804 INFO L225 Difference]: With dead ends: 140 [2024-10-11 01:55:04,804 INFO L226 Difference]: Without dead ends: 128 [2024-10-11 01:55:04,804 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=280, Invalid=650, Unknown=0, NotChecked=0, Total=930 [2024-10-11 01:55:04,805 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 143 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:55:04,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 83 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:55:04,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-10-11 01:55:04,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 71. [2024-10-11 01:55:04,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.4857142857142858) internal successors, (104), 70 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:04,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 104 transitions. [2024-10-11 01:55:04,836 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 104 transitions. Word has length 13 [2024-10-11 01:55:04,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:55:04,837 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 104 transitions. [2024-10-11 01:55:04,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:04,837 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 104 transitions. [2024-10-11 01:55:04,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-11 01:55:04,838 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:55:04,839 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:55:04,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 01:55:05,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-11 01:55:05,039 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:55:05,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:55:05,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1306904410, now seen corresponding path program 2 times [2024-10-11 01:55:05,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:55:05,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627166898] [2024-10-11 01:55:05,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:05,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:55:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:05,116 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:55:05,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:05,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627166898] [2024-10-11 01:55:05,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627166898] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:55:05,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290470590] [2024-10-11 01:55:05,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 01:55:05,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:05,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:55:05,119 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:55:05,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 01:55:05,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:55:05,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:55:05,164 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 01:55:05,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:55:05,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:55:05,194 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:55:05,265 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:55:05,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290470590] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:55:05,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:55:05,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-10-11 01:55:05,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445599101] [2024-10-11 01:55:05,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:55:05,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 01:55:05,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:55:05,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 01:55:05,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-10-11 01:55:05,269 INFO L87 Difference]: Start difference. First operand 71 states and 104 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:05,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:55:05,414 INFO L93 Difference]: Finished difference Result 100 states and 139 transitions. [2024-10-11 01:55:05,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 01:55:05,414 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 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 15 [2024-10-11 01:55:05,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:55:05,415 INFO L225 Difference]: With dead ends: 100 [2024-10-11 01:55:05,415 INFO L226 Difference]: Without dead ends: 83 [2024-10-11 01:55:05,416 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-10-11 01:55:05,416 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:55:05,416 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 56 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:55:05,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-10-11 01:55:05,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 67. [2024-10-11 01:55:05,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.4545454545454546) internal successors, (96), 66 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:05,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 96 transitions. [2024-10-11 01:55:05,436 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 96 transitions. Word has length 15 [2024-10-11 01:55:05,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:55:05,436 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 96 transitions. [2024-10-11 01:55:05,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:05,437 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 96 transitions. [2024-10-11 01:55:05,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-11 01:55:05,438 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:55:05,439 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:55:05,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 01:55:05,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:05,643 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:55:05,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:55:05,643 INFO L85 PathProgramCache]: Analyzing trace with hash 597902084, now seen corresponding path program 3 times [2024-10-11 01:55:05,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:55:05,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171745944] [2024-10-11 01:55:05,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:05,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:55:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:05,758 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:55:05,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:05,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171745944] [2024-10-11 01:55:05,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171745944] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:55:05,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413467991] [2024-10-11 01:55:05,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 01:55:05,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:05,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:55:05,761 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:55:05,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 01:55:05,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 01:55:05,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:55:05,804 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 01:55:05,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:55:05,842 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:55:05,843 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:55:05,889 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:55:05,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413467991] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:55:05,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:55:05,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-10-11 01:55:05,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183765558] [2024-10-11 01:55:05,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:55:05,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 01:55:05,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:55:05,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 01:55:05,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 01:55:05,894 INFO L87 Difference]: Start difference. First operand 67 states and 96 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:05,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:55:05,971 INFO L93 Difference]: Finished difference Result 82 states and 113 transitions. [2024-10-11 01:55:05,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 01:55:05,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 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 16 [2024-10-11 01:55:05,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:55:05,972 INFO L225 Difference]: With dead ends: 82 [2024-10-11 01:55:05,972 INFO L226 Difference]: Without dead ends: 78 [2024-10-11 01:55:05,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 6 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-11 01:55:05,973 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 01:55:05,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 41 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 01:55:05,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-10-11 01:55:05,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2024-10-11 01:55:05,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.4189189189189189) internal successors, (105), 74 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:05,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 105 transitions. [2024-10-11 01:55:05,999 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 105 transitions. Word has length 16 [2024-10-11 01:55:05,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:55:05,999 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 105 transitions. [2024-10-11 01:55:05,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:05,999 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 105 transitions. [2024-10-11 01:55:06,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-11 01:55:06,000 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:55:06,000 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:55:06,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-11 01:55:06,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-11 01:55:06,205 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:55:06,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:55:06,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1356760826, now seen corresponding path program 4 times [2024-10-11 01:55:06,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:55:06,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929896777] [2024-10-11 01:55:06,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:06,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:55:06,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:06,658 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:55:06,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:06,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929896777] [2024-10-11 01:55:06,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929896777] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:55:06,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156293248] [2024-10-11 01:55:06,659 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 01:55:06,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:06,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:55:06,661 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:55:06,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 01:55:06,768 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 01:55:06,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:55:06,769 WARN L253 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-10-11 01:55:06,771 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:55:07,263 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:55:07,264 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:55:07,835 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:55:07,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156293248] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:55:07,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:55:07,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 13] total 33 [2024-10-11 01:55:07,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173215592] [2024-10-11 01:55:07,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:55:07,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-11 01:55:07,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:55:07,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-11 01:55:07,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=964, Unknown=0, NotChecked=0, Total=1122 [2024-10-11 01:55:07,838 INFO L87 Difference]: Start difference. First operand 75 states and 105 transitions. Second operand has 34 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 33 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:08,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:55:08,358 INFO L93 Difference]: Finished difference Result 92 states and 123 transitions. [2024-10-11 01:55:08,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 01:55:08,359 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 33 states have internal predecessors, (45), 0 states have call successors, (0), 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 17 [2024-10-11 01:55:08,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:55:08,360 INFO L225 Difference]: With dead ends: 92 [2024-10-11 01:55:08,360 INFO L226 Difference]: Without dead ends: 70 [2024-10-11 01:55:08,360 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=242, Invalid=1318, Unknown=0, NotChecked=0, Total=1560 [2024-10-11 01:55:08,361 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 26 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:55:08,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 93 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:55:08,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-10-11 01:55:08,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2024-10-11 01:55:08,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.411764705882353) internal successors, (96), 68 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:08,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2024-10-11 01:55:08,382 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 17 [2024-10-11 01:55:08,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:55:08,382 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2024-10-11 01:55:08,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 33 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:08,383 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2024-10-11 01:55:08,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-11 01:55:08,383 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:55:08,384 INFO L215 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:55:08,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-11 01:55:08,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:08,584 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:55:08,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:55:08,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1029534538, now seen corresponding path program 5 times [2024-10-11 01:55:08,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:55:08,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483011683] [2024-10-11 01:55:08,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:08,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:55:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:08,689 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:55:08,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:08,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483011683] [2024-10-11 01:55:08,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483011683] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:55:08,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206480981] [2024-10-11 01:55:08,689 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 01:55:08,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:08,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:55:08,691 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:55:08,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 01:55:08,736 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-10-11 01:55:08,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:55:08,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 01:55:08,740 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:55:08,760 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:55:08,761 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:55:08,900 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:55:08,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206480981] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:55:08,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:55:08,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-10-11 01:55:08,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715577995] [2024-10-11 01:55:08,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:55:08,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-11 01:55:08,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:55:08,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-11 01:55:08,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2024-10-11 01:55:08,902 INFO L87 Difference]: Start difference. First operand 69 states and 96 transitions. Second operand has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:10,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:55:10,263 INFO L93 Difference]: Finished difference Result 186 states and 287 transitions. [2024-10-11 01:55:10,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-10-11 01:55:10,264 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 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 17 [2024-10-11 01:55:10,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:55:10,265 INFO L225 Difference]: With dead ends: 186 [2024-10-11 01:55:10,266 INFO L226 Difference]: Without dead ends: 164 [2024-10-11 01:55:10,267 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1047 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=963, Invalid=2577, Unknown=0, NotChecked=0, Total=3540 [2024-10-11 01:55:10,268 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 145 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:55:10,268 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 127 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:55:10,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-10-11 01:55:10,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 91. [2024-10-11 01:55:10,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.4111111111111112) internal successors, (127), 90 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:10,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 127 transitions. [2024-10-11 01:55:10,303 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 127 transitions. Word has length 17 [2024-10-11 01:55:10,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:55:10,303 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 127 transitions. [2024-10-11 01:55:10,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:10,303 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 127 transitions. [2024-10-11 01:55:10,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-11 01:55:10,308 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:55:10,309 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:55:10,325 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-11 01:55:10,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-11 01:55:10,510 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:55:10,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:55:10,510 INFO L85 PathProgramCache]: Analyzing trace with hash -810930964, now seen corresponding path program 6 times [2024-10-11 01:55:10,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:55:10,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968932849] [2024-10-11 01:55:10,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:10,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:55:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:10,605 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-11 01:55:10,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:10,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968932849] [2024-10-11 01:55:10,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968932849] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:55:10,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210743222] [2024-10-11 01:55:10,606 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 01:55:10,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:10,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:55:10,608 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:55:10,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 01:55:10,650 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-11 01:55:10,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:55:10,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 01:55:10,652 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:55:10,692 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-11 01:55:10,692 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:55:10,779 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-11 01:55:10,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210743222] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:55:10,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:55:10,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-10-11 01:55:10,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050201108] [2024-10-11 01:55:10,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:55:10,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 01:55:10,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:55:10,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 01:55:10,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-10-11 01:55:10,781 INFO L87 Difference]: Start difference. First operand 91 states and 127 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:10,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:55:10,964 INFO L93 Difference]: Finished difference Result 125 states and 171 transitions. [2024-10-11 01:55:10,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-11 01:55:10,964 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 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 19 [2024-10-11 01:55:10,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:55:10,965 INFO L225 Difference]: With dead ends: 125 [2024-10-11 01:55:10,965 INFO L226 Difference]: Without dead ends: 109 [2024-10-11 01:55:10,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2024-10-11 01:55:10,967 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:55:10,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 57 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:55:10,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-10-11 01:55:10,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 88. [2024-10-11 01:55:10,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.3908045977011494) internal successors, (121), 87 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:10,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 121 transitions. [2024-10-11 01:55:10,995 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 121 transitions. Word has length 19 [2024-10-11 01:55:10,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:55:10,996 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 121 transitions. [2024-10-11 01:55:10,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:10,996 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 121 transitions. [2024-10-11 01:55:10,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-11 01:55:10,996 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:55:10,997 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:55:11,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-11 01:55:11,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:11,197 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:55:11,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:55:11,198 INFO L85 PathProgramCache]: Analyzing trace with hash -447329718, now seen corresponding path program 7 times [2024-10-11 01:55:11,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:55:11,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071349051] [2024-10-11 01:55:11,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:11,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:55:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:11,338 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:55:11,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:11,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071349051] [2024-10-11 01:55:11,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071349051] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:55:11,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890321658] [2024-10-11 01:55:11,339 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 01:55:11,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:11,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:55:11,340 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:55:11,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 01:55:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:11,385 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 01:55:11,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:55:11,452 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 01:55:11,452 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:55:11,493 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 01:55:11,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890321658] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:55:11,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:55:11,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 12 [2024-10-11 01:55:11,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907285698] [2024-10-11 01:55:11,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:55:11,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 01:55:11,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:55:11,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 01:55:11,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-10-11 01:55:11,495 INFO L87 Difference]: Start difference. First operand 88 states and 121 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:11,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:55:11,607 INFO L93 Difference]: Finished difference Result 116 states and 162 transitions. [2024-10-11 01:55:11,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 01:55:11,607 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 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 19 [2024-10-11 01:55:11,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:55:11,608 INFO L225 Difference]: With dead ends: 116 [2024-10-11 01:55:11,608 INFO L226 Difference]: Without dead ends: 112 [2024-10-11 01:55:11,608 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2024-10-11 01:55:11,609 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 10 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:55:11,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 103 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:55:11,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-10-11 01:55:11,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 105. [2024-10-11 01:55:11,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.4038461538461537) internal successors, (146), 104 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) [2024-10-11 01:55:11,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 146 transitions. [2024-10-11 01:55:11,649 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 146 transitions. Word has length 19 [2024-10-11 01:55:11,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:55:11,649 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 146 transitions. [2024-10-11 01:55:11,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:11,649 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 146 transitions. [2024-10-11 01:55:11,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-11 01:55:11,650 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:55:11,650 INFO L215 NwaCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:55:11,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-11 01:55:11,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-11 01:55:11,855 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:55:11,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:55:11,855 INFO L85 PathProgramCache]: Analyzing trace with hash -2038982461, now seen corresponding path program 3 times [2024-10-11 01:55:11,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:55:11,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037905042] [2024-10-11 01:55:11,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:11,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:55:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:12,065 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:55:12,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:12,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037905042] [2024-10-11 01:55:12,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037905042] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:55:12,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085983460] [2024-10-11 01:55:12,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 01:55:12,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:12,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:55:12,068 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:55:12,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 01:55:12,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-10-11 01:55:12,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:55:12,115 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-11 01:55:12,116 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:55:12,145 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:55:12,146 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:55:12,443 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:55:12,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085983460] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:55:12,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:55:12,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 28 [2024-10-11 01:55:12,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596535168] [2024-10-11 01:55:12,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:55:12,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-11 01:55:12,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:55:12,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-11 01:55:12,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2024-10-11 01:55:12,446 INFO L87 Difference]: Start difference. First operand 105 states and 146 transitions. Second operand has 29 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 28 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:15,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:55:15,563 INFO L93 Difference]: Finished difference Result 451 states and 707 transitions. [2024-10-11 01:55:15,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-10-11 01:55:15,564 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 28 states have internal predecessors, (37), 0 states have call successors, (0), 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 20 [2024-10-11 01:55:15,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:55:15,566 INFO L225 Difference]: With dead ends: 451 [2024-10-11 01:55:15,566 INFO L226 Difference]: Without dead ends: 417 [2024-10-11 01:55:15,567 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1264 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1575, Invalid=3537, Unknown=0, NotChecked=0, Total=5112 [2024-10-11 01:55:15,568 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 607 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-11 01:55:15,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 350 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-11 01:55:15,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2024-10-11 01:55:15,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 163. [2024-10-11 01:55:15,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.3950617283950617) internal successors, (226), 162 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:15,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 226 transitions. [2024-10-11 01:55:15,635 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 226 transitions. Word has length 20 [2024-10-11 01:55:15,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:55:15,636 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 226 transitions. [2024-10-11 01:55:15,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 28 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:15,636 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 226 transitions. [2024-10-11 01:55:15,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-11 01:55:15,637 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:55:15,637 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:55:15,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-11 01:55:15,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-11 01:55:15,841 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:55:15,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:55:15,841 INFO L85 PathProgramCache]: Analyzing trace with hash -333836406, now seen corresponding path program 8 times [2024-10-11 01:55:15,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:55:15,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97481160] [2024-10-11 01:55:15,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:15,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:55:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:16,251 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:55:16,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:16,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97481160] [2024-10-11 01:55:16,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97481160] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:55:16,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563302411] [2024-10-11 01:55:16,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 01:55:16,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:16,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:55:16,254 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:55:16,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 01:55:16,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:55:16,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:55:16,351 WARN L253 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-10-11 01:55:16,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:55:16,861 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:55:16,861 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:55:17,556 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:55:17,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563302411] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:55:17,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:55:17,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 17] total 45 [2024-10-11 01:55:17,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355267724] [2024-10-11 01:55:17,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:55:17,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-10-11 01:55:17,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:55:17,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-10-11 01:55:17,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=1814, Unknown=0, NotChecked=0, Total=2070 [2024-10-11 01:55:17,559 INFO L87 Difference]: Start difference. First operand 163 states and 226 transitions. Second operand has 46 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 45 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:18,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:55:18,524 INFO L93 Difference]: Finished difference Result 187 states and 253 transitions. [2024-10-11 01:55:18,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-11 01:55:18,525 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 45 states have internal predecessors, (59), 0 states have call successors, (0), 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 21 [2024-10-11 01:55:18,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:55:18,526 INFO L225 Difference]: With dead ends: 187 [2024-10-11 01:55:18,526 INFO L226 Difference]: Without dead ends: 160 [2024-10-11 01:55:18,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=455, Invalid=2737, Unknown=0, NotChecked=0, Total=3192 [2024-10-11 01:55:18,527 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 53 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 01:55:18,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 128 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 01:55:18,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-10-11 01:55:18,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 157. [2024-10-11 01:55:18,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.391025641025641) internal successors, (217), 156 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:18,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 217 transitions. [2024-10-11 01:55:18,579 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 217 transitions. Word has length 21 [2024-10-11 01:55:18,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:55:18,579 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 217 transitions. [2024-10-11 01:55:18,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 45 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:18,579 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 217 transitions. [2024-10-11 01:55:18,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-11 01:55:18,580 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:55:18,580 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:55:18,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-11 01:55:18,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-11 01:55:18,781 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:55:18,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:55:18,781 INFO L85 PathProgramCache]: Analyzing trace with hash -746453126, now seen corresponding path program 2 times [2024-10-11 01:55:18,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:55:18,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708137992] [2024-10-11 01:55:18,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:18,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:55:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:18,939 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 01:55:18,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:18,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708137992] [2024-10-11 01:55:18,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708137992] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:55:18,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114931232] [2024-10-11 01:55:18,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 01:55:18,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:18,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:55:18,942 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:55:18,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-11 01:55:18,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:55:18,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:55:18,988 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 01:55:18,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:55:19,055 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 01:55:19,055 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:55:19,092 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 01:55:19,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114931232] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:55:19,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:55:19,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 14 [2024-10-11 01:55:19,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808196025] [2024-10-11 01:55:19,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:55:19,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 01:55:19,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:55:19,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 01:55:19,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-11 01:55:19,095 INFO L87 Difference]: Start difference. First operand 157 states and 217 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:19,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:55:19,221 INFO L93 Difference]: Finished difference Result 170 states and 236 transitions. [2024-10-11 01:55:19,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 01:55:19,221 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 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 21 [2024-10-11 01:55:19,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:55:19,222 INFO L225 Difference]: With dead ends: 170 [2024-10-11 01:55:19,222 INFO L226 Difference]: Without dead ends: 166 [2024-10-11 01:55:19,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-11 01:55:19,223 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 24 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 01:55:19,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 116 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 01:55:19,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-10-11 01:55:19,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 158. [2024-10-11 01:55:19,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.3885350318471337) internal successors, (218), 157 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:19,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 218 transitions. [2024-10-11 01:55:19,271 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 218 transitions. Word has length 21 [2024-10-11 01:55:19,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:55:19,271 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 218 transitions. [2024-10-11 01:55:19,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:19,271 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 218 transitions. [2024-10-11 01:55:19,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-11 01:55:19,272 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:55:19,272 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:55:19,288 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-11 01:55:19,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-11 01:55:19,472 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:55:19,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:55:19,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1637447652, now seen corresponding path program 3 times [2024-10-11 01:55:19,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:55:19,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958371007] [2024-10-11 01:55:19,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:19,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:55:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:19,620 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 01:55:19,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:19,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958371007] [2024-10-11 01:55:19,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958371007] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:55:19,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875343753] [2024-10-11 01:55:19,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 01:55:19,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:19,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:55:19,623 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:55:19,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-11 01:55:19,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-11 01:55:19,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:55:19,672 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 01:55:19,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:55:19,744 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 01:55:19,744 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:55:19,939 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 01:55:19,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875343753] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:55:19,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:55:19,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 27 [2024-10-11 01:55:19,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002433411] [2024-10-11 01:55:19,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:55:19,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-11 01:55:19,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:55:19,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-11 01:55:19,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2024-10-11 01:55:19,941 INFO L87 Difference]: Start difference. First operand 158 states and 218 transitions. Second operand has 27 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:20,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:55:20,462 INFO L93 Difference]: Finished difference Result 280 states and 356 transitions. [2024-10-11 01:55:20,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-11 01:55:20,462 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-10-11 01:55:20,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:55:20,463 INFO L225 Difference]: With dead ends: 280 [2024-10-11 01:55:20,463 INFO L226 Difference]: Without dead ends: 260 [2024-10-11 01:55:20,464 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=347, Invalid=1293, Unknown=0, NotChecked=0, Total=1640 [2024-10-11 01:55:20,465 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 97 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:55:20,465 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 92 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:55:20,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-10-11 01:55:20,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 172. [2024-10-11 01:55:20,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.409356725146199) internal successors, (241), 171 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:20,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 241 transitions. [2024-10-11 01:55:20,544 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 241 transitions. Word has length 22 [2024-10-11 01:55:20,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:55:20,544 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 241 transitions. [2024-10-11 01:55:20,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:20,545 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 241 transitions. [2024-10-11 01:55:20,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-11 01:55:20,545 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:55:20,545 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:55:20,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-11 01:55:20,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 01:55:20,750 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:55:20,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:55:20,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1682904180, now seen corresponding path program 4 times [2024-10-11 01:55:20,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:55:20,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978069469] [2024-10-11 01:55:20,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:55:20,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:55:20,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:55:20,956 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-11 01:55:20,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:55:20,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978069469] [2024-10-11 01:55:20,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978069469] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:55:20,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279193369] [2024-10-11 01:55:20,957 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 01:55:20,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:55:20,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:55:20,959 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:55:20,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-11 01:55:20,998 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 01:55:20,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:55:20,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-11 01:55:21,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:55:21,117 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 01:55:21,117 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:55:21,183 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 01:55:21,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279193369] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:55:21,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:55:21,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 23 [2024-10-11 01:55:21,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573214500] [2024-10-11 01:55:21,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:55:21,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 01:55:21,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:55:21,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 01:55:21,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2024-10-11 01:55:21,185 INFO L87 Difference]: Start difference. First operand 172 states and 241 transitions. Second operand has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:55:33,339 WARN L286 SmtUtils]: Spent 12.03s on a formula simplification. DAG size of input: 36 DAG size of output: 36 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-11 01:55:41,379 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification. DAG size of input: 29 DAG size of output: 29 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-11 01:55:51,298 WARN L286 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 36 DAG size of output: 22 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-11 01:55:59,444 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-11 01:56:13,534 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 31 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-11 01:56:34,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:56:34,099 INFO L93 Difference]: Finished difference Result 405 states and 603 transitions. [2024-10-11 01:56:34,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-10-11 01:56:34,099 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 0 states have call successors, (0), 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 24 [2024-10-11 01:56:34,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:56:34,101 INFO L225 Difference]: With dead ends: 405 [2024-10-11 01:56:34,101 INFO L226 Difference]: Without dead ends: 399 [2024-10-11 01:56:34,102 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 72.7s TimeCoverageRelationStatistics Valid=433, Invalid=973, Unknown=0, NotChecked=0, Total=1406 [2024-10-11 01:56:34,102 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 207 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:56:34,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 162 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:56:34,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2024-10-11 01:56:34,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 275. [2024-10-11 01:56:34,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 1.5182481751824817) internal successors, (416), 274 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:34,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 416 transitions. [2024-10-11 01:56:34,230 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 416 transitions. Word has length 24 [2024-10-11 01:56:34,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:56:34,231 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 416 transitions. [2024-10-11 01:56:34,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:56:34,231 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 416 transitions. [2024-10-11 01:56:34,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-11 01:56:34,231 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:56:34,231 INFO L215 NwaCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:56:34,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-11 01:56:34,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:56:34,432 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:56:34,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:56:34,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1608665427, now seen corresponding path program 9 times [2024-10-11 01:56:34,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:56:34,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127892945] [2024-10-11 01:56:34,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:56:34,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:56:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:56:34,662 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:56:34,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:56:34,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127892945] [2024-10-11 01:56:34,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127892945] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:56:34,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788407943] [2024-10-11 01:56:34,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 01:56:34,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:56:34,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:56:34,665 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:56:34,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-11 01:56:34,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-10-11 01:56:34,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:56:34,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-11 01:56:34,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:56:34,777 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:56:34,778 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:56:35,128 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:56:35,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788407943] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:56:35,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:56:35,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2024-10-11 01:56:35,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707150963] [2024-10-11 01:56:35,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:56:35,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-11 01:56:35,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:56:35,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-11 01:56:35,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=818, Unknown=0, NotChecked=0, Total=1056 [2024-10-11 01:56:35,130 INFO L87 Difference]: Start difference. First operand 275 states and 416 transitions. Second operand has 33 states, 33 states have (on average 1.303030303030303) internal successors, (43), 32 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)