./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/mbpr3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/mbpr3.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a50e57e46342104030586dde3ea26bc2e3984490f4fdef34fa383d24842d8980 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-13 22:09:59,621 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 22:09:59,691 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 22:09:59,698 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 22:09:59,700 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 22:09:59,731 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 22:09:59,732 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 22:09:59,733 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 22:09:59,733 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 22:09:59,734 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 22:09:59,736 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 22:09:59,736 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 22:09:59,737 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 22:09:59,738 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 22:09:59,739 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 22:09:59,739 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 22:09:59,739 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 22:09:59,739 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 22:09:59,740 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 22:09:59,740 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 22:09:59,743 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 22:09:59,744 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 22:09:59,744 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 22:09:59,744 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 22:09:59,745 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 22:09:59,745 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 22:09:59,745 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 22:09:59,745 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 22:09:59,746 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 22:09:59,746 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 22:09:59,746 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 22:09:59,746 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 22:09:59,746 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 22:09:59,747 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 22:09:59,747 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 22:09:59,749 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 22:09:59,750 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 22:09:59,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 22:09:59,750 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 22:09:59,750 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 22:09:59,751 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 22:09:59,751 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 22:09:59,751 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a50e57e46342104030586dde3ea26bc2e3984490f4fdef34fa383d24842d8980 [2024-10-13 22:10:00,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 22:10:00,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 22:10:00,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 22:10:00,059 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 22:10:00,060 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 22:10:00,061 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/mbpr3.c [2024-10-13 22:10:01,448 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 22:10:01,649 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 22:10:01,650 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/mbpr3.c [2024-10-13 22:10:01,660 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddb4df400/056c5d27b4044e2a9795959f3da878ac/FLAGed68e488d [2024-10-13 22:10:01,673 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddb4df400/056c5d27b4044e2a9795959f3da878ac [2024-10-13 22:10:01,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 22:10:01,678 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 22:10:01,681 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 22:10:01,681 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 22:10:01,687 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 22:10:01,688 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:10:01" (1/1) ... [2024-10-13 22:10:01,689 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@213f1157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:10:01, skipping insertion in model container [2024-10-13 22:10:01,689 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:10:01" (1/1) ... [2024-10-13 22:10:01,711 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 22:10:01,864 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/mbpr3.c[396,409] [2024-10-13 22:10:01,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 22:10:01,904 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 22:10:01,920 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/array-tiling/mbpr3.c[396,409] [2024-10-13 22:10:01,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 22:10:01,966 INFO L204 MainTranslator]: Completed translation [2024-10-13 22:10:01,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:10:01 WrapperNode [2024-10-13 22:10:01,967 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 22:10:01,968 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 22:10:01,969 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 22:10:01,969 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 22:10:01,976 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:10:01" (1/1) ... [2024-10-13 22:10:02,006 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:10:01" (1/1) ... [2024-10-13 22:10:02,052 INFO L138 Inliner]: procedures = 15, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 116 [2024-10-13 22:10:02,053 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 22:10:02,069 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 22:10:02,070 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 22:10:02,070 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 22:10:02,081 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:10:01" (1/1) ... [2024-10-13 22:10:02,084 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:10:01" (1/1) ... [2024-10-13 22:10:02,087 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:10:01" (1/1) ... [2024-10-13 22:10:02,102 INFO L175 MemorySlicer]: Split 30 memory accesses to 3 slices as follows [2, 8, 20]. 67 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0]. The 12 writes are split as follows [0, 0, 12]. [2024-10-13 22:10:02,103 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:10:01" (1/1) ... [2024-10-13 22:10:02,103 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:10:01" (1/1) ... [2024-10-13 22:10:02,109 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:10:01" (1/1) ... [2024-10-13 22:10:02,113 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:10:01" (1/1) ... [2024-10-13 22:10:02,119 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:10:01" (1/1) ... [2024-10-13 22:10:02,120 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:10:01" (1/1) ... [2024-10-13 22:10:02,126 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 22:10:02,128 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 22:10:02,129 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 22:10:02,129 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 22:10:02,129 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:10:01" (1/1) ... [2024-10-13 22:10:02,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 22:10:02,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:10:02,159 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 22:10:02,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 22:10:02,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 22:10:02,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 22:10:02,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 22:10:02,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 22:10:02,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 22:10:02,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 22:10:02,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 22:10:02,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-13 22:10:02,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 22:10:02,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 22:10:02,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 22:10:02,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 22:10:02,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-13 22:10:02,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 22:10:02,273 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 22:10:02,275 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 22:10:02,520 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-10-13 22:10:02,520 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 22:10:02,552 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 22:10:02,552 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-13 22:10:02,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:10:02 BoogieIcfgContainer [2024-10-13 22:10:02,553 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 22:10:02,557 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 22:10:02,557 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 22:10:02,561 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 22:10:02,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:10:01" (1/3) ... [2024-10-13 22:10:02,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c49b67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:10:02, skipping insertion in model container [2024-10-13 22:10:02,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:10:01" (2/3) ... [2024-10-13 22:10:02,564 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c49b67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:10:02, skipping insertion in model container [2024-10-13 22:10:02,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:10:02" (3/3) ... [2024-10-13 22:10:02,566 INFO L112 eAbstractionObserver]: Analyzing ICFG mbpr3.c [2024-10-13 22:10:02,585 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 22:10:02,586 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 22:10:02,634 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 22:10:02,640 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;@18a5c987, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 22:10:02,641 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-13 22:10:02,653 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 27 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) [2024-10-13 22:10:02,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-13 22:10:02,658 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:10:02,659 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:10:02,660 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:10:02,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:10:02,664 INFO L85 PathProgramCache]: Analyzing trace with hash 139679752, now seen corresponding path program 1 times [2024-10-13 22:10:02,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:10:02,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23269730] [2024-10-13 22:10:02,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:10:02,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:10:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:10:02,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:10:02,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:10:02,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23269730] [2024-10-13 22:10:02,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23269730] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:10:02,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:10:02,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 22:10:02,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134084097] [2024-10-13 22:10:02,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:10:02,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 22:10:02,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:10:02,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 22:10:02,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 22:10:02,898 INFO L87 Difference]: Start difference. First operand has 28 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 27 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) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:10:02,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:10:02,939 INFO L93 Difference]: Finished difference Result 52 states and 79 transitions. [2024-10-13 22:10:02,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 22:10:02,943 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 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 [2024-10-13 22:10:02,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:10:02,950 INFO L225 Difference]: With dead ends: 52 [2024-10-13 22:10:02,950 INFO L226 Difference]: Without dead ends: 24 [2024-10-13 22:10:02,954 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 [2024-10-13 22:10:02,960 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 22:10:02,962 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 22:10:02,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-10-13 22:10:02,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-10-13 22:10:02,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 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) [2024-10-13 22:10:02,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2024-10-13 22:10:02,990 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 16 [2024-10-13 22:10:02,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:10:02,990 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2024-10-13 22:10:02,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:10:02,991 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2024-10-13 22:10:02,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-13 22:10:02,991 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:10:02,991 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:10:02,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 22:10:02,992 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:10:02,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:10:02,993 INFO L85 PathProgramCache]: Analyzing trace with hash -834490832, now seen corresponding path program 1 times [2024-10-13 22:10:02,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:10:02,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781523568] [2024-10-13 22:10:02,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:10:02,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:10:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:10:03,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:10:03,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:10:03,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781523568] [2024-10-13 22:10:03,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781523568] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:10:03,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:10:03,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 22:10:03,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185537917] [2024-10-13 22:10:03,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:10:03,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 22:10:03,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:10:03,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 22:10:03,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 22:10:03,268 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:10:03,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:10:03,302 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2024-10-13 22:10:03,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 22:10:03,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 [2024-10-13 22:10:03,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:10:03,304 INFO L225 Difference]: With dead ends: 28 [2024-10-13 22:10:03,304 INFO L226 Difference]: Without dead ends: 26 [2024-10-13 22:10:03,304 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 22:10:03,306 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 22:10:03,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 22:10:03,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-10-13 22:10:03,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-10-13 22:10:03,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:10:03,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2024-10-13 22:10:03,317 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 16 [2024-10-13 22:10:03,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:10:03,317 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2024-10-13 22:10:03,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:10:03,318 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2024-10-13 22:10:03,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-13 22:10:03,318 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:10:03,318 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:10:03,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 22:10:03,319 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:10:03,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:10:03,320 INFO L85 PathProgramCache]: Analyzing trace with hash -834431250, now seen corresponding path program 1 times [2024-10-13 22:10:03,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:10:03,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921219937] [2024-10-13 22:10:03,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:10:03,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:10:03,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:10:03,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:10:03,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:10:03,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921219937] [2024-10-13 22:10:03,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921219937] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:10:03,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:10:03,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 22:10:03,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727943306] [2024-10-13 22:10:03,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:10:03,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 22:10:03,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:10:03,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 22:10:03,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-13 22:10:03,576 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:10:03,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:10:03,707 INFO L93 Difference]: Finished difference Result 53 states and 71 transitions. [2024-10-13 22:10:03,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 22:10:03,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 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 [2024-10-13 22:10:03,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:10:03,708 INFO L225 Difference]: With dead ends: 53 [2024-10-13 22:10:03,708 INFO L226 Difference]: Without dead ends: 35 [2024-10-13 22:10:03,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-13 22:10:03,711 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 36 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:10:03,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 18 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:10:03,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-10-13 22:10:03,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2024-10-13 22:10:03,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:10:03,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2024-10-13 22:10:03,723 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 16 [2024-10-13 22:10:03,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:10:03,723 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2024-10-13 22:10:03,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:10:03,724 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2024-10-13 22:10:03,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-13 22:10:03,724 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:10:03,725 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:10:03,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 22:10:03,725 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:10:03,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:10:03,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1903088773, now seen corresponding path program 1 times [2024-10-13 22:10:03,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:10:03,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544209477] [2024-10-13 22:10:03,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:10:03,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:10:03,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:10:03,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 22:10:03,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:10:03,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544209477] [2024-10-13 22:10:03,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544209477] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:10:03,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:10:03,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 22:10:03,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723202865] [2024-10-13 22:10:03,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:10:03,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:10:03,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:10:03,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:10:03,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 22:10:03,903 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 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) [2024-10-13 22:10:03,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:10:03,936 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2024-10-13 22:10:03,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:10:03,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 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 25 [2024-10-13 22:10:03,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:10:03,938 INFO L225 Difference]: With dead ends: 42 [2024-10-13 22:10:03,938 INFO L226 Difference]: Without dead ends: 29 [2024-10-13 22:10:03,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 22:10:03,939 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 14 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 22:10:03,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 19 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 22:10:03,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-10-13 22:10:03,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-10-13 22:10:03,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.25) internal successors, (35), 28 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) [2024-10-13 22:10:03,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2024-10-13 22:10:03,950 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 25 [2024-10-13 22:10:03,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:10:03,951 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2024-10-13 22:10:03,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 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) [2024-10-13 22:10:03,951 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2024-10-13 22:10:03,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-13 22:10:03,951 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:10:03,952 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:10:03,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 22:10:03,952 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:10:03,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:10:03,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1223030403, now seen corresponding path program 1 times [2024-10-13 22:10:03,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:10:03,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475371029] [2024-10-13 22:10:03,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:10:03,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:10:04,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:10:04,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 22:10:04,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:10:04,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475371029] [2024-10-13 22:10:04,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475371029] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:10:04,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430751672] [2024-10-13 22:10:04,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:10:04,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:10:04,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:10:04,943 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:10:04,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 22:10:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:10:05,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-13 22:10:05,043 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:10:05,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 22:10:05,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2024-10-13 22:10:05,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-10-13 22:10:05,325 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:10:05,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 18 [2024-10-13 22:10:05,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-10-13 22:10:05,385 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:10:05,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 18 [2024-10-13 22:10:05,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-13 22:10:05,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:10:05,482 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:10:05,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-10-13 22:10:05,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-10-13 22:10:05,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 22:10:05,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430751672] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:10:05,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:10:05,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-10-13 22:10:05,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586765975] [2024-10-13 22:10:05,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:10:05,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 22:10:05,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:10:05,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 22:10:05,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-10-13 22:10:05,725 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 18 states, 18 states have (on average 3.6666666666666665) internal successors, (66), 18 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) [2024-10-13 22:10:06,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:10:06,047 INFO L93 Difference]: Finished difference Result 73 states and 89 transitions. [2024-10-13 22:10:06,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 22:10:06,048 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.6666666666666665) internal successors, (66), 18 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) Word has length 25 [2024-10-13 22:10:06,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:10:06,049 INFO L225 Difference]: With dead ends: 73 [2024-10-13 22:10:06,049 INFO L226 Difference]: Without dead ends: 50 [2024-10-13 22:10:06,049 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2024-10-13 22:10:06,053 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 186 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 22:10:06,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 59 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 22:10:06,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-10-13 22:10:06,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 31. [2024-10-13 22:10:06,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:10:06,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2024-10-13 22:10:06,066 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 25 [2024-10-13 22:10:06,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:10:06,067 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2024-10-13 22:10:06,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.6666666666666665) internal successors, (66), 18 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) [2024-10-13 22:10:06,069 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2024-10-13 22:10:06,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-13 22:10:06,070 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:10:06,070 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:10:06,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 22:10:06,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:10:06,271 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:10:06,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:10:06,273 INFO L85 PathProgramCache]: Analyzing trace with hash -488556627, now seen corresponding path program 1 times [2024-10-13 22:10:06,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:10:06,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929792117] [2024-10-13 22:10:06,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:10:06,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:10:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:10:06,903 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 22:10:06,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:10:06,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929792117] [2024-10-13 22:10:06,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929792117] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:10:06,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509164959] [2024-10-13 22:10:06,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:10:06,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:10:06,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:10:06,907 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:10:06,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 22:10:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:10:06,988 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-13 22:10:06,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:10:07,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 22:10:07,117 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:10:07,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 18 [2024-10-13 22:10:07,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-10-13 22:10:07,194 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:10:07,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 18 [2024-10-13 22:10:07,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-13 22:10:07,312 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 22:10:07,312 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:10:07,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-10-13 22:10:07,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-10-13 22:10:07,505 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 22:10:07,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509164959] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:10:07,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:10:07,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-10-13 22:10:07,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810077569] [2024-10-13 22:10:07,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:10:07,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-13 22:10:07,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:10:07,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-13 22:10:07,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-10-13 22:10:07,511 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 19 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:10:07,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:10:07,734 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2024-10-13 22:10:07,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 22:10:07,735 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 19 states have internal predecessors, (81), 0 states have call successors, (0), 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 30 [2024-10-13 22:10:07,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:10:07,736 INFO L225 Difference]: With dead ends: 65 [2024-10-13 22:10:07,736 INFO L226 Difference]: Without dead ends: 45 [2024-10-13 22:10:07,737 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2024-10-13 22:10:07,738 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 74 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:10:07,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 66 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:10:07,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-10-13 22:10:07,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2024-10-13 22:10:07,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 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) [2024-10-13 22:10:07,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2024-10-13 22:10:07,747 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 30 [2024-10-13 22:10:07,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:10:07,747 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2024-10-13 22:10:07,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 19 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:10:07,747 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2024-10-13 22:10:07,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-13 22:10:07,748 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:10:07,748 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:10:07,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 22:10:07,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-13 22:10:07,949 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:10:07,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:10:07,950 INFO L85 PathProgramCache]: Analyzing trace with hash -867211395, now seen corresponding path program 2 times [2024-10-13 22:10:07,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:10:07,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508685566] [2024-10-13 22:10:07,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:10:07,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:10:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:10:08,315 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 22:10:08,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:10:08,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508685566] [2024-10-13 22:10:08,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508685566] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:10:08,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773660331] [2024-10-13 22:10:08,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 22:10:08,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:10:08,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:10:08,319 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:10:08,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 22:10:08,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 22:10:08,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:10:08,405 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-13 22:10:08,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:10:08,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 22:10:08,453 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:10:08,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 25 [2024-10-13 22:10:08,561 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 22:10:08,562 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:10:08,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-10-13 22:10:08,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-10-13 22:10:08,675 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 22:10:08,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773660331] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:10:08,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:10:08,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 16 [2024-10-13 22:10:08,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99593724] [2024-10-13 22:10:08,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:10:08,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 22:10:08,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:10:08,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 22:10:08,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-10-13 22:10:08,680 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:10:08,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:10:08,957 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2024-10-13 22:10:08,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-13 22:10:08,959 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 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 35 [2024-10-13 22:10:08,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:10:08,960 INFO L225 Difference]: With dead ends: 57 [2024-10-13 22:10:08,960 INFO L226 Difference]: Without dead ends: 55 [2024-10-13 22:10:08,960 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2024-10-13 22:10:08,961 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 35 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 22:10:08,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 82 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 22:10:08,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-10-13 22:10:08,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 41. [2024-10-13 22:10:08,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.15) internal successors, (46), 40 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:10:08,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2024-10-13 22:10:08,967 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 35 [2024-10-13 22:10:08,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:10:08,968 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2024-10-13 22:10:08,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:10:08,968 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2024-10-13 22:10:08,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-13 22:10:08,968 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:10:08,969 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:10:08,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 22:10:09,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:10:09,170 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:10:09,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:10:09,170 INFO L85 PathProgramCache]: Analyzing trace with hash 777427373, now seen corresponding path program 3 times [2024-10-13 22:10:09,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:10:09,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444689673] [2024-10-13 22:10:09,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:10:09,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:10:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:10:09,486 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 22:10:09,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:10:09,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444689673] [2024-10-13 22:10:09,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444689673] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:10:09,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517601956] [2024-10-13 22:10:09,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 22:10:09,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:10:09,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:10:09,489 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:10:09,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 22:10:09,589 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-13 22:10:09,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:10:09,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 22:10:09,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:10:10,013 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 22:10:10,014 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:10:10,238 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 22:10:10,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517601956] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:10:10,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:10:10,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 27 [2024-10-13 22:10:10,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626472629] [2024-10-13 22:10:10,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:10:10,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-13 22:10:10,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:10:10,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-13 22:10:10,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=518, Unknown=0, NotChecked=0, Total=702 [2024-10-13 22:10:10,245 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 27 states, 27 states have (on average 4.037037037037037) internal successors, (109), 27 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:10:10,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:10:10,521 INFO L93 Difference]: Finished difference Result 113 states and 128 transitions. [2024-10-13 22:10:10,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 22:10:10,522 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.037037037037037) internal successors, (109), 27 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-10-13 22:10:10,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:10:10,523 INFO L225 Difference]: With dead ends: 113 [2024-10-13 22:10:10,523 INFO L226 Difference]: Without dead ends: 56 [2024-10-13 22:10:10,524 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=273, Invalid=719, Unknown=0, NotChecked=0, Total=992 [2024-10-13 22:10:10,525 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 131 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 22:10:10,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 100 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 22:10:10,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-10-13 22:10:10,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2024-10-13 22:10:10,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 49 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:10:10,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2024-10-13 22:10:10,532 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 40 [2024-10-13 22:10:10,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:10:10,533 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2024-10-13 22:10:10,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.037037037037037) internal successors, (109), 27 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:10:10,533 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2024-10-13 22:10:10,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-13 22:10:10,534 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:10:10,534 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:10:10,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 22:10:10,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:10:10,739 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:10:10,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:10:10,739 INFO L85 PathProgramCache]: Analyzing trace with hash 495494460, now seen corresponding path program 4 times [2024-10-13 22:10:10,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:10:10,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050414971] [2024-10-13 22:10:10,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:10:10,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:10:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:10:11,330 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 22:10:11,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:10:11,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050414971] [2024-10-13 22:10:11,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050414971] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:10:11,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391944792] [2024-10-13 22:10:11,331 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 22:10:11,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:10:11,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:10:11,333 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:10:11,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 22:10:11,429 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 22:10:11,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:10:11,431 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-13 22:10:11,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:10:11,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 22:10:11,572 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:10:11,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 25 [2024-10-13 22:10:11,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 22:10:11,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 11 [2024-10-13 22:10:11,619 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:10:11,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 33 [2024-10-13 22:10:11,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-13 22:10:11,775 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 22:10:11,775 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:10:11,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 53 [2024-10-13 22:10:11,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 94 [2024-10-13 22:10:12,017 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 22:10:12,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391944792] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:10:12,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:10:12,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 26 [2024-10-13 22:10:12,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972713436] [2024-10-13 22:10:12,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:10:12,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-13 22:10:12,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:10:12,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-13 22:10:12,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2024-10-13 22:10:12,020 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 26 states, 26 states have (on average 4.1923076923076925) internal successors, (109), 26 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:10:12,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:10:12,233 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2024-10-13 22:10:12,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 22:10:12,234 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.1923076923076925) internal successors, (109), 26 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-10-13 22:10:12,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:10:12,235 INFO L225 Difference]: With dead ends: 64 [2024-10-13 22:10:12,235 INFO L226 Difference]: Without dead ends: 55 [2024-10-13 22:10:12,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2024-10-13 22:10:12,236 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 36 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 22:10:12,236 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 163 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 22:10:12,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-10-13 22:10:12,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 50. [2024-10-13 22:10:12,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 49 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:10:12,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2024-10-13 22:10:12,250 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 49 [2024-10-13 22:10:12,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:10:12,250 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2024-10-13 22:10:12,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.1923076923076925) internal successors, (109), 26 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:10:12,250 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2024-10-13 22:10:12,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-13 22:10:12,254 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:10:12,254 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:10:12,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 22:10:12,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:10:12,455 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:10:12,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:10:12,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1175552830, now seen corresponding path program 5 times [2024-10-13 22:10:12,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:10:12,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934589536] [2024-10-13 22:10:12,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:10:12,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:10:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:10:13,463 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-13 22:10:13,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:10:13,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934589536] [2024-10-13 22:10:13,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934589536] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:10:13,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303741914] [2024-10-13 22:10:13,465 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 22:10:13,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:10:13,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:10:13,467 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:10:13,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 22:10:13,799 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-10-13 22:10:13,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:10:13,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-10-13 22:10:13,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:10:13,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 22:10:13,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2024-10-13 22:10:14,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-10-13 22:10:14,040 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:10:14,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 28 [2024-10-13 22:10:14,085 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:10:14,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 25 [2024-10-13 22:10:14,123 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:10:14,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 35 [2024-10-13 22:10:14,217 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:10:14,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 28 [2024-10-13 22:10:14,232 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:10:14,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 35 [2024-10-13 22:10:14,259 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:10:14,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 28 [2024-10-13 22:10:14,273 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:10:14,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 28 [2024-10-13 22:10:14,493 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:10:14,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 10 [2024-10-13 22:10:14,514 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:10:14,515 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:10:22,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-10-13 22:10:22,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-10-13 22:10:23,038 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 22:10:23,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303741914] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:10:23,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:10:23,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 16, 12] total 34 [2024-10-13 22:10:23,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431149692] [2024-10-13 22:10:23,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:10:23,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-13 22:10:23,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:10:23,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-13 22:10:23,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=975, Unknown=0, NotChecked=0, Total=1122 [2024-10-13 22:10:23,046 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 34 states, 34 states have (on average 3.7941176470588234) internal successors, (129), 34 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:10:24,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:10:24,263 INFO L93 Difference]: Finished difference Result 140 states and 156 transitions. [2024-10-13 22:10:24,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-13 22:10:24,264 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.7941176470588234) internal successors, (129), 34 states have internal predecessors, (129), 0 states have call successors, (0), 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 49 [2024-10-13 22:10:24,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:10:24,265 INFO L225 Difference]: With dead ends: 140 [2024-10-13 22:10:24,265 INFO L226 Difference]: Without dead ends: 131 [2024-10-13 22:10:24,267 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 81 SyntacticMatches, 5 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 988 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=589, Invalid=2951, Unknown=0, NotChecked=0, Total=3540 [2024-10-13 22:10:24,267 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 395 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 22:10:24,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 211 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 22:10:24,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-10-13 22:10:24,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 55. [2024-10-13 22:10:24,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 54 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) [2024-10-13 22:10:24,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2024-10-13 22:10:24,277 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 49 [2024-10-13 22:10:24,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:10:24,277 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2024-10-13 22:10:24,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.7941176470588234) internal successors, (129), 34 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:10:24,278 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2024-10-13 22:10:24,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-13 22:10:24,278 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:10:24,279 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:10:24,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-13 22:10:24,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:10:24,480 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:10:24,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:10:24,480 INFO L85 PathProgramCache]: Analyzing trace with hash -637227380, now seen corresponding path program 6 times [2024-10-13 22:10:24,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:10:24,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716552583] [2024-10-13 22:10:24,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:10:24,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:10:24,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:10:25,337 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 8 proven. 48 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 22:10:25,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:10:25,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716552583] [2024-10-13 22:10:25,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716552583] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:10:25,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011942810] [2024-10-13 22:10:25,337 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 22:10:25,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:10:25,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:10:25,340 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:10:25,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 22:10:25,457 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-10-13 22:10:25,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:10:25,460 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-10-13 22:10:25,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:10:25,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 22:10:25,662 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:10:25,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 18 [2024-10-13 22:10:25,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-10-13 22:10:25,752 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:10:25,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 25 [2024-10-13 22:10:25,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 11 [2024-10-13 22:10:25,833 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-10-13 22:10:25,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 46 treesize of output 33 [2024-10-13 22:10:26,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-13 22:10:26,112 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 8 proven. 52 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 22:10:26,112 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:10:26,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-10-13 22:10:26,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-10-13 22:10:26,493 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 8 proven. 43 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-13 22:10:26,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011942810] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:10:26,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:10:26,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 32 [2024-10-13 22:10:26,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153090198] [2024-10-13 22:10:26,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:10:26,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-13 22:10:26,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:10:26,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-13 22:10:26,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=882, Unknown=0, NotChecked=0, Total=992 [2024-10-13 22:10:26,497 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 32 states, 32 states have (on average 4.46875) internal successors, (143), 32 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:10:27,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:10:27,598 INFO L93 Difference]: Finished difference Result 102 states and 116 transitions. [2024-10-13 22:10:27,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-13 22:10:27,601 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.46875) internal successors, (143), 32 states have internal predecessors, (143), 0 states have call successors, (0), 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 54 [2024-10-13 22:10:27,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:10:27,602 INFO L225 Difference]: With dead ends: 102 [2024-10-13 22:10:27,603 INFO L226 Difference]: Without dead ends: 93 [2024-10-13 22:10:27,603 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 92 SyntacticMatches, 5 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=431, Invalid=2539, Unknown=0, NotChecked=0, Total=2970 [2024-10-13 22:10:27,604 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 266 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 22:10:27,606 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 232 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 22:10:27,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-10-13 22:10:27,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 60. [2024-10-13 22:10:27,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 59 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:10:27,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2024-10-13 22:10:27,617 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 54 [2024-10-13 22:10:27,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:10:27,617 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2024-10-13 22:10:27,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.46875) internal successors, (143), 32 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:10:27,618 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2024-10-13 22:10:27,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-13 22:10:27,618 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:10:27,619 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:10:27,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-13 22:10:27,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:10:27,823 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:10:27,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:10:27,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1418828802, now seen corresponding path program 7 times [2024-10-13 22:10:27,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:10:27,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616901109] [2024-10-13 22:10:27,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:10:27,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:10:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:10:28,425 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 22:10:28,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:10:28,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616901109] [2024-10-13 22:10:28,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616901109] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:10:28,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954196993] [2024-10-13 22:10:28,426 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 22:10:28,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:10:28,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:10:28,428 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:10:28,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 22:10:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:10:28,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-10-13 22:10:28,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:10:28,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 22:10:28,636 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:10:28,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 25 [2024-10-13 22:10:28,964 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 22:10:28,964 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:10:29,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-10-13 22:10:29,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-10-13 22:10:29,082 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-13 22:10:29,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954196993] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:10:29,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:10:29,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 15] total 30 [2024-10-13 22:10:29,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023326019] [2024-10-13 22:10:29,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:10:29,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-13 22:10:29,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:10:29,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-13 22:10:29,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=746, Unknown=0, NotChecked=0, Total=870 [2024-10-13 22:10:29,084 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand has 30 states, 30 states have (on average 4.066666666666666) internal successors, (122), 30 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:10:29,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:10:29,773 INFO L93 Difference]: Finished difference Result 96 states and 107 transitions. [2024-10-13 22:10:29,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-10-13 22:10:29,774 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.066666666666666) internal successors, (122), 30 states have internal predecessors, (122), 0 states have call successors, (0), 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 59 [2024-10-13 22:10:29,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:10:29,774 INFO L225 Difference]: With dead ends: 96 [2024-10-13 22:10:29,774 INFO L226 Difference]: Without dead ends: 94 [2024-10-13 22:10:29,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=300, Invalid=2052, Unknown=0, NotChecked=0, Total=2352 [2024-10-13 22:10:29,776 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 42 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-13 22:10:29,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 212 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-13 22:10:29,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-10-13 22:10:29,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 65. [2024-10-13 22:10:29,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.09375) internal successors, (70), 64 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:10:29,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2024-10-13 22:10:29,791 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 59 [2024-10-13 22:10:29,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:10:29,792 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2024-10-13 22:10:29,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.066666666666666) internal successors, (122), 30 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:10:29,792 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2024-10-13 22:10:29,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-13 22:10:29,793 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:10:29,793 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:10:29,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-13 22:10:29,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-13 22:10:29,994 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:10:29,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:10:29,994 INFO L85 PathProgramCache]: Analyzing trace with hash -212449844, now seen corresponding path program 8 times [2024-10-13 22:10:29,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:10:29,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811462707] [2024-10-13 22:10:29,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:10:29,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:10:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:10:30,450 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 73 proven. 31 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-13 22:10:30,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:10:30,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811462707] [2024-10-13 22:10:30,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811462707] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:10:30,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061516453] [2024-10-13 22:10:30,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 22:10:30,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:10:30,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:10:30,453 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:10:30,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 22:10:30,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 22:10:30,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:10:30,554 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 22:10:30,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:10:31,081 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 99 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-13 22:10:31,081 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:10:31,358 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 99 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-13 22:10:31,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061516453] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:10:31,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:10:31,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 39 [2024-10-13 22:10:31,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773024052] [2024-10-13 22:10:31,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:10:31,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-10-13 22:10:31,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:10:31,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-10-13 22:10:31,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1115, Unknown=0, NotChecked=0, Total=1482 [2024-10-13 22:10:31,360 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand has 39 states, 39 states have (on average 4.17948717948718) internal successors, (163), 39 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:10:31,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:10:31,710 INFO L93 Difference]: Finished difference Result 176 states and 191 transitions. [2024-10-13 22:10:31,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-13 22:10:31,711 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.17948717948718) internal successors, (163), 39 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-10-13 22:10:31,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:10:31,712 INFO L225 Difference]: With dead ends: 176 [2024-10-13 22:10:31,712 INFO L226 Difference]: Without dead ends: 80 [2024-10-13 22:10:31,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=498, Invalid=1482, Unknown=0, NotChecked=0, Total=1980 [2024-10-13 22:10:31,714 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 169 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 22:10:31,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 201 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 22:10:31,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-10-13 22:10:31,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 74. [2024-10-13 22:10:31,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.082191780821918) internal successors, (79), 73 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:10:31,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2024-10-13 22:10:31,726 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 64 [2024-10-13 22:10:31,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:10:31,727 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2024-10-13 22:10:31,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.17948717948718) internal successors, (163), 39 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:10:31,727 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2024-10-13 22:10:31,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-13 22:10:31,728 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:10:31,728 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:10:31,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-13 22:10:31,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-13 22:10:31,929 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:10:31,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:10:31,929 INFO L85 PathProgramCache]: Analyzing trace with hash -102936229, now seen corresponding path program 9 times [2024-10-13 22:10:31,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:10:31,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773206113] [2024-10-13 22:10:31,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:10:31,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:10:31,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:10:33,633 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 12 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:10:33,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:10:33,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773206113] [2024-10-13 22:10:33,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773206113] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:10:33,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820652445] [2024-10-13 22:10:33,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 22:10:33,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:10:33,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:10:33,635 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:10:33,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 22:10:34,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-10-13 22:10:34,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:10:34,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-13 22:10:34,094 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:10:34,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-13 22:10:34,196 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:10:34,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 31 [2024-10-13 22:10:34,231 INFO L349 Elim1Store]: treesize reduction 28, result has 24.3 percent of original size [2024-10-13 22:10:34,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 13 [2024-10-13 22:10:34,240 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:10:34,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 37 [2024-10-13 22:10:34,488 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 37 proven. 72 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-13 22:10:34,489 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:10:36,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 53 [2024-10-13 22:10:36,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2024-10-13 22:10:36,265 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 37 proven. 72 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-13 22:10:36,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820652445] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:10:36,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:10:36,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 15] total 42 [2024-10-13 22:10:36,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905199063] [2024-10-13 22:10:36,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:10:36,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-10-13 22:10:36,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:10:36,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-10-13 22:10:36,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1526, Unknown=1, NotChecked=0, Total=1722 [2024-10-13 22:10:36,268 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand has 42 states, 42 states have (on average 4.285714285714286) internal successors, (180), 42 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:10:38,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:10:38,230 INFO L93 Difference]: Finished difference Result 123 states and 139 transitions. [2024-10-13 22:10:38,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-10-13 22:10:38,231 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.285714285714286) internal successors, (180), 42 states have internal predecessors, (180), 0 states have call successors, (0), 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 73 [2024-10-13 22:10:38,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:10:38,232 INFO L225 Difference]: With dead ends: 123 [2024-10-13 22:10:38,232 INFO L226 Difference]: Without dead ends: 114 [2024-10-13 22:10:38,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=758, Invalid=5247, Unknown=1, NotChecked=0, Total=6006 [2024-10-13 22:10:38,235 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 245 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 1783 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 1873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-13 22:10:38,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 353 Invalid, 1873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1783 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-13 22:10:38,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-10-13 22:10:38,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 79. [2024-10-13 22:10:38,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.064102564102564) internal successors, (83), 78 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:10:38,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2024-10-13 22:10:38,256 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 73 [2024-10-13 22:10:38,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:10:38,256 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2024-10-13 22:10:38,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.285714285714286) internal successors, (180), 42 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:10:38,256 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2024-10-13 22:10:38,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-13 22:10:38,261 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:10:38,261 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:10:38,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-13 22:10:38,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-13 22:10:38,463 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:10:38,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:10:38,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1218559437, now seen corresponding path program 10 times [2024-10-13 22:10:38,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:10:38,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463259114] [2024-10-13 22:10:38,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:10:38,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:10:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:10:40,084 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 14 proven. 143 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 22:10:40,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:10:40,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463259114] [2024-10-13 22:10:40,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463259114] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:10:40,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720865114] [2024-10-13 22:10:40,085 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 22:10:40,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:10:40,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:10:40,087 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:10:40,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-13 22:10:40,240 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 22:10:40,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:10:40,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-10-13 22:10:40,248 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:10:40,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 22:10:40,862 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:10:40,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 18 [2024-10-13 22:10:40,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-10-13 22:10:40,997 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:10:40,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 25 [2024-10-13 22:10:41,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 11 [2024-10-13 22:10:41,054 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-10-13 22:10:41,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 46 treesize of output 33 [2024-10-13 22:10:41,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 11 [2024-10-13 22:10:41,168 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-10-13 22:10:41,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 46 treesize of output 33 [2024-10-13 22:10:41,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-13 22:10:41,782 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 18 proven. 150 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 22:10:41,782 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:11:03,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-10-13 22:11:03,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-10-13 22:11:05,148 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 14 proven. 148 refuted. 2 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 22:11:05,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720865114] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:11:05,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:11:05,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 27, 23] total 68 [2024-10-13 22:11:05,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504695756] [2024-10-13 22:11:05,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:11:05,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-10-13 22:11:05,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:11:05,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-10-13 22:11:05,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=4128, Unknown=5, NotChecked=0, Total=4556 [2024-10-13 22:11:05,152 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand has 68 states, 68 states have (on average 3.161764705882353) internal successors, (215), 68 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:11:20,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:11:20,780 INFO L93 Difference]: Finished difference Result 263 states and 289 transitions. [2024-10-13 22:11:20,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-10-13 22:11:20,780 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 3.161764705882353) internal successors, (215), 68 states have internal predecessors, (215), 0 states have call successors, (0), 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 78 [2024-10-13 22:11:20,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:11:20,782 INFO L225 Difference]: With dead ends: 263 [2024-10-13 22:11:20,782 INFO L226 Difference]: Without dead ends: 207 [2024-10-13 22:11:20,786 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 113 SyntacticMatches, 6 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5142 ImplicationChecksByTransitivity, 33.0s TimeCoverageRelationStatistics Valid=2268, Invalid=17187, Unknown=5, NotChecked=0, Total=19460 [2024-10-13 22:11:20,787 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 1103 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 2769 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 3078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 2769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-10-13 22:11:20,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1103 Valid, 539 Invalid, 3078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 2769 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-10-13 22:11:20,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-10-13 22:11:20,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 112. [2024-10-13 22:11:20,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.063063063063063) internal successors, (118), 111 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:11:20,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 118 transitions. [2024-10-13 22:11:20,815 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 118 transitions. Word has length 78 [2024-10-13 22:11:20,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:11:20,815 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 118 transitions. [2024-10-13 22:11:20,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 3.161764705882353) internal successors, (215), 68 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:11:20,816 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 118 transitions. [2024-10-13 22:11:20,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-10-13 22:11:20,816 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:11:20,816 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:11:20,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-13 22:11:21,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-13 22:11:21,017 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:11:21,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:11:21,018 INFO L85 PathProgramCache]: Analyzing trace with hash -561138339, now seen corresponding path program 11 times [2024-10-13 22:11:21,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:11:21,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321326845] [2024-10-13 22:11:21,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:11:21,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:11:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:11:22,347 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 22:11:22,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:11:22,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321326845] [2024-10-13 22:11:22,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321326845] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:11:22,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835702769] [2024-10-13 22:11:22,348 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 22:11:22,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:11:22,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:11:22,350 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:11:22,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-13 22:11:23,430 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-10-13 22:11:23,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:11:23,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-10-13 22:11:23,437 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:11:23,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 22:11:24,044 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 22:11:24,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 25 [2024-10-13 22:11:25,700 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-13 22:11:25,700 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:11:26,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-10-13 22:11:26,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-10-13 22:11:26,235 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-13 22:11:26,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835702769] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:11:26,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:11:26,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 18] total 36 [2024-10-13 22:11:26,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531327531] [2024-10-13 22:11:26,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:11:26,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-13 22:11:26,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:11:26,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-13 22:11:26,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1123, Unknown=0, NotChecked=0, Total=1260 [2024-10-13 22:11:26,237 INFO L87 Difference]: Start difference. First operand 112 states and 118 transitions. Second operand has 36 states, 36 states have (on average 4.444444444444445) internal successors, (160), 36 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)