./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_vararg_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-examples/standard_vararg_ground.i -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 28ac72543f751666908cbd68a77fa11ffe4dd886016c3996df45b97bb42d5078 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 17:58:11,431 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 17:58:11,510 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 17:58:11,512 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 17:58:11,528 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 17:58:11,549 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 17:58:11,550 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 17:58:11,550 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 17:58:11,550 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 17:58:11,551 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 17:58:11,551 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 17:58:11,551 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 17:58:11,552 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 17:58:11,552 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 17:58:11,552 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 17:58:11,552 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 17:58:11,553 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 17:58:11,553 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 17:58:11,553 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 17:58:11,553 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 17:58:11,554 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 17:58:11,556 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 17:58:11,556 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 17:58:11,556 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 17:58:11,557 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 17:58:11,557 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 17:58:11,557 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 17:58:11,557 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 17:58:11,557 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 17:58:11,557 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 17:58:11,558 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 17:58:11,558 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 17:58:11,559 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 17:58:11,559 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 17:58:11,559 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 17:58:11,559 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 17:58:11,559 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 17:58:11,559 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 17:58:11,559 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 17:58:11,560 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 17:58:11,560 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 17:58:11,560 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 17:58:11,560 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 28ac72543f751666908cbd68a77fa11ffe4dd886016c3996df45b97bb42d5078 [2024-11-09 17:58:11,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 17:58:11,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 17:58:11,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 17:58:11,784 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 17:58:11,785 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 17:58:11,785 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_vararg_ground.i [2024-11-09 17:58:13,047 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 17:58:13,173 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 17:58:13,174 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_vararg_ground.i [2024-11-09 17:58:13,180 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fb87b7e9/9dafbbd4803a4ba483eddaf756bf61f5/FLAG2db194fad [2024-11-09 17:58:13,191 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fb87b7e9/9dafbbd4803a4ba483eddaf756bf61f5 [2024-11-09 17:58:13,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 17:58:13,195 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 17:58:13,196 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 17:58:13,196 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 17:58:13,200 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 17:58:13,201 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:58:13" (1/1) ... [2024-11-09 17:58:13,201 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fae2d4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:58:13, skipping insertion in model container [2024-11-09 17:58:13,202 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:58:13" (1/1) ... [2024-11-09 17:58:13,224 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 17:58:13,347 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_vararg_ground.i[815,828] [2024-11-09 17:58:13,358 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 17:58:13,363 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 17:58:13,372 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_vararg_ground.i[815,828] [2024-11-09 17:58:13,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 17:58:13,389 INFO L204 MainTranslator]: Completed translation [2024-11-09 17:58:13,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:58:13 WrapperNode [2024-11-09 17:58:13,389 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 17:58:13,390 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 17:58:13,390 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 17:58:13,390 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 17:58:13,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:58:13" (1/1) ... [2024-11-09 17:58:13,420 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:58:13" (1/1) ... [2024-11-09 17:58:13,435 INFO L138 Inliner]: procedures = 16, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2024-11-09 17:58:13,435 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 17:58:13,436 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 17:58:13,436 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 17:58:13,436 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 17:58:13,443 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:58:13" (1/1) ... [2024-11-09 17:58:13,443 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:58:13" (1/1) ... [2024-11-09 17:58:13,446 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:58:13" (1/1) ... [2024-11-09 17:58:13,469 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-09 17:58:13,469 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:58:13" (1/1) ... [2024-11-09 17:58:13,469 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:58:13" (1/1) ... [2024-11-09 17:58:13,472 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:58:13" (1/1) ... [2024-11-09 17:58:13,472 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:58:13" (1/1) ... [2024-11-09 17:58:13,473 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:58:13" (1/1) ... [2024-11-09 17:58:13,474 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:58:13" (1/1) ... [2024-11-09 17:58:13,475 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 17:58:13,475 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 17:58:13,475 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 17:58:13,475 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 17:58:13,476 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:58:13" (1/1) ... [2024-11-09 17:58:13,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 17:58:13,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:58:13,505 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 17:58:13,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 17:58:13,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 17:58:13,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 17:58:13,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 17:58:13,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 17:58:13,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 17:58:13,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 17:58:13,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 17:58:13,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 17:58:13,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 17:58:13,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 17:58:13,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 17:58:13,628 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 17:58:13,630 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 17:58:13,740 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L17: call ULTIMATE.dealloc(main_~#aa~0#1.base, main_~#aa~0#1.offset);havoc main_~#aa~0#1.base, main_~#aa~0#1.offset; [2024-11-09 17:58:13,747 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-09 17:58:13,747 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 17:58:13,759 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 17:58:13,760 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 17:58:13,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 05:58:13 BoogieIcfgContainer [2024-11-09 17:58:13,761 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 17:58:13,764 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 17:58:13,764 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 17:58:13,766 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 17:58:13,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:58:13" (1/3) ... [2024-11-09 17:58:13,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52db1f0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:58:13, skipping insertion in model container [2024-11-09 17:58:13,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:58:13" (2/3) ... [2024-11-09 17:58:13,770 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52db1f0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:58:13, skipping insertion in model container [2024-11-09 17:58:13,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 05:58:13" (3/3) ... [2024-11-09 17:58:13,771 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_vararg_ground.i [2024-11-09 17:58:13,783 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 17:58:13,784 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 17:58:13,833 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 17:58:13,840 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;@32ba0ad9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 17:58:13,840 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 17:58:13,844 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:58:13,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 17:58:13,848 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:58:13,849 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:58:13,849 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:58:13,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:58:13,854 INFO L85 PathProgramCache]: Analyzing trace with hash 886668597, now seen corresponding path program 1 times [2024-11-09 17:58:13,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:58:13,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780028457] [2024-11-09 17:58:13,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:58:13,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:58:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:58:13,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 17:58:13,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:58:13,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780028457] [2024-11-09 17:58:13,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780028457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 17:58:13,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 17:58:13,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 17:58:13,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834971109] [2024-11-09 17:58:13,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 17:58:13,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 17:58:13,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:58:14,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 17:58:14,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 17:58:14,010 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:58:14,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:58:14,020 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2024-11-09 17:58:14,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 17:58:14,023 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2024-11-09 17:58:14,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:58:14,029 INFO L225 Difference]: With dead ends: 35 [2024-11-09 17:58:14,030 INFO L226 Difference]: Without dead ends: 15 [2024-11-09 17:58:14,032 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 [2024-11-09 17:58:14,036 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:58:14,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:58:14,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-09 17:58:14,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-09 17:58:14,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:58:14,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-11-09 17:58:14,061 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2024-11-09 17:58:14,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:58:14,061 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-11-09 17:58:14,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:58:14,062 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-11-09 17:58:14,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 17:58:14,063 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:58:14,063 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:58:14,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 17:58:14,064 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:58:14,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:58:14,066 INFO L85 PathProgramCache]: Analyzing trace with hash 752241008, now seen corresponding path program 1 times [2024-11-09 17:58:14,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:58:14,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332445677] [2024-11-09 17:58:14,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:58:14,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:58:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:58:14,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 17:58:14,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:58:14,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332445677] [2024-11-09 17:58:14,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332445677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 17:58:14,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 17:58:14,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 17:58:14,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110146546] [2024-11-09 17:58:14,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 17:58:14,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 17:58:14,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:58:14,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 17:58:14,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 17:58:14,148 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:58:14,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:58:14,163 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2024-11-09 17:58:14,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 17:58:14,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-09 17:58:14,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:58:14,164 INFO L225 Difference]: With dead ends: 28 [2024-11-09 17:58:14,164 INFO L226 Difference]: Without dead ends: 17 [2024-11-09 17:58:14,165 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 17:58:14,167 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:58:14,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:58:14,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-09 17:58:14,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-09 17:58:14,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:58:14,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2024-11-09 17:58:14,173 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2024-11-09 17:58:14,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:58:14,173 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2024-11-09 17:58:14,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:58:14,174 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2024-11-09 17:58:14,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 17:58:14,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:58:14,175 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:58:14,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 17:58:14,176 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:58:14,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:58:14,176 INFO L85 PathProgramCache]: Analyzing trace with hash -550171535, now seen corresponding path program 1 times [2024-11-09 17:58:14,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:58:14,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39194538] [2024-11-09 17:58:14,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:58:14,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:58:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:58:14,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 17:58:14,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:58:14,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39194538] [2024-11-09 17:58:14,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39194538] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:58:14,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227848056] [2024-11-09 17:58:14,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:58:14,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:58:14,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:58:14,319 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 17:58:14,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 17:58:14,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:58:14,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 17:58:14,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:58:14,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 17:58:14,418 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:58:14,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 17:58:14,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227848056] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:58:14,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:58:14,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-09 17:58:14,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125775347] [2024-11-09 17:58:14,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:58:14,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 17:58:14,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:58:14,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 17:58:14,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 17:58:14,455 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:58:14,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:58:14,482 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2024-11-09 17:58:14,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 17:58:14,483 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-09 17:58:14,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:58:14,483 INFO L225 Difference]: With dead ends: 34 [2024-11-09 17:58:14,483 INFO L226 Difference]: Without dead ends: 23 [2024-11-09 17:58:14,483 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 17:58:14,484 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:58:14,485 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:58:14,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-09 17:58:14,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-09 17:58:14,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 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) [2024-11-09 17:58:14,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2024-11-09 17:58:14,490 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2024-11-09 17:58:14,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:58:14,491 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2024-11-09 17:58:14,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:58:14,492 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2024-11-09 17:58:14,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 17:58:14,492 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:58:14,493 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:58:14,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 17:58:14,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:58:14,697 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:58:14,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:58:14,697 INFO L85 PathProgramCache]: Analyzing trace with hash 204024820, now seen corresponding path program 2 times [2024-11-09 17:58:14,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:58:14,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937228379] [2024-11-09 17:58:14,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:58:14,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:58:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:58:14,800 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 17:58:14,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:58:14,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937228379] [2024-11-09 17:58:14,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937228379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 17:58:14,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 17:58:14,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 17:58:14,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685973881] [2024-11-09 17:58:14,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 17:58:14,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 17:58:14,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:58:14,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 17:58:14,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 17:58:14,802 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:58:14,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:58:14,814 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2024-11-09 17:58:14,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 17:58:14,815 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-09 17:58:14,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:58:14,815 INFO L225 Difference]: With dead ends: 35 [2024-11-09 17:58:14,815 INFO L226 Difference]: Without dead ends: 25 [2024-11-09 17:58:14,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 17:58:14,816 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:58:14,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:58:14,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-09 17:58:14,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-09 17:58:14,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:58:14,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2024-11-09 17:58:14,820 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2024-11-09 17:58:14,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:58:14,820 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2024-11-09 17:58:14,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:58:14,820 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2024-11-09 17:58:14,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 17:58:14,821 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:58:14,821 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:58:14,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 17:58:14,821 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:58:14,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:58:14,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1349811213, now seen corresponding path program 1 times [2024-11-09 17:58:14,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:58:14,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516654165] [2024-11-09 17:58:14,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:58:14,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:58:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:58:14,931 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 17:58:14,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:58:14,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516654165] [2024-11-09 17:58:14,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516654165] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:58:14,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372397821] [2024-11-09 17:58:14,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:58:14,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:58:14,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:58:14,937 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 17:58:14,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 17:58:14,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:58:14,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 17:58:14,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:58:15,030 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 17:58:15,030 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:58:15,107 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 17:58:15,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372397821] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:58:15,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:58:15,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-09 17:58:15,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650176732] [2024-11-09 17:58:15,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:58:15,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 17:58:15,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:58:15,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 17:58:15,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-09 17:58:15,110 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 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) [2024-11-09 17:58:15,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:58:15,144 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2024-11-09 17:58:15,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 17:58:15,145 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 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) Word has length 23 [2024-11-09 17:58:15,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:58:15,146 INFO L225 Difference]: With dead ends: 50 [2024-11-09 17:58:15,146 INFO L226 Difference]: Without dead ends: 37 [2024-11-09 17:58:15,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-09 17:58:15,148 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:58:15,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:58:15,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-09 17:58:15,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-09 17:58:15,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:58:15,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2024-11-09 17:58:15,153 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 23 [2024-11-09 17:58:15,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:58:15,153 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2024-11-09 17:58:15,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 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) [2024-11-09 17:58:15,153 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2024-11-09 17:58:15,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-09 17:58:15,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:58:15,154 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:58:15,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 17:58:15,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:58:15,355 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:58:15,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:58:15,356 INFO L85 PathProgramCache]: Analyzing trace with hash -804344135, now seen corresponding path program 2 times [2024-11-09 17:58:15,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:58:15,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155569878] [2024-11-09 17:58:15,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:58:15,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:58:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:58:15,533 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 17:58:15,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:58:15,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155569878] [2024-11-09 17:58:15,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155569878] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:58:15,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11602205] [2024-11-09 17:58:15,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 17:58:15,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:58:15,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:58:15,538 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 17:58:15,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 17:58:15,611 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 17:58:15,611 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:58:15,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 17:58:15,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:58:15,646 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 17:58:15,646 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:58:15,841 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 17:58:15,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11602205] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:58:15,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:58:15,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-09 17:58:15,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720211773] [2024-11-09 17:58:15,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:58:15,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 17:58:15,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:58:15,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 17:58:15,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-09 17:58:15,847 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:58:15,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:58:15,878 INFO L93 Difference]: Finished difference Result 74 states and 89 transitions. [2024-11-09 17:58:15,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 17:58:15,879 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 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 [2024-11-09 17:58:15,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:58:15,880 INFO L225 Difference]: With dead ends: 74 [2024-11-09 17:58:15,880 INFO L226 Difference]: Without dead ends: 61 [2024-11-09 17:58:15,880 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-09 17:58:15,881 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:58:15,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 87 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:58:15,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-09 17:58:15,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-09 17:58:15,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.05) internal successors, (63), 60 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:58:15,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2024-11-09 17:58:15,886 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 35 [2024-11-09 17:58:15,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:58:15,886 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2024-11-09 17:58:15,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:58:15,887 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2024-11-09 17:58:15,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-09 17:58:15,888 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:58:15,888 INFO L215 NwaCegarLoop]: trace histogram [23, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:58:15,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 17:58:16,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:58:16,089 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:58:16,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:58:16,090 INFO L85 PathProgramCache]: Analyzing trace with hash -302343867, now seen corresponding path program 3 times [2024-11-09 17:58:16,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:58:16,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744968115] [2024-11-09 17:58:16,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:58:16,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:58:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:58:16,658 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 17:58:16,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:58:16,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744968115] [2024-11-09 17:58:16,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744968115] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:58:16,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406061312] [2024-11-09 17:58:16,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 17:58:16,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:58:16,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:58:16,664 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) [2024-11-09 17:58:16,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 17:58:16,736 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 17:58:16,736 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:58:16,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 17:58:16,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:58:17,000 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 [2024-11-09 17:58:17,021 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2024-11-09 17:58:17,022 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:58:17,122 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 17:58:17,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 12 [2024-11-09 17:58:17,191 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2024-11-09 17:58:17,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406061312] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:58:17,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:58:17,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 7, 7] total 34 [2024-11-09 17:58:17,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044544666] [2024-11-09 17:58:17,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:58:17,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-09 17:58:17,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:58:17,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-09 17:58:17,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=795, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 17:58:17,194 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand has 34 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 34 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) [2024-11-09 17:58:17,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:58:17,689 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions. [2024-11-09 17:58:17,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-09 17:58:17,691 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 34 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) Word has length 59 [2024-11-09 17:58:17,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:58:17,691 INFO L225 Difference]: With dead ends: 80 [2024-11-09 17:58:17,691 INFO L226 Difference]: Without dead ends: 67 [2024-11-09 17:58:17,693 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=962, Invalid=2460, Unknown=0, NotChecked=0, Total=3422 [2024-11-09 17:58:17,693 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 24 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 17:58:17,693 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 128 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 17:58:17,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-09 17:58:17,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2024-11-09 17:58:17,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 65 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) [2024-11-09 17:58:17,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2024-11-09 17:58:17,705 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 59 [2024-11-09 17:58:17,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:58:17,706 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2024-11-09 17:58:17,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 34 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) [2024-11-09 17:58:17,706 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2024-11-09 17:58:17,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-09 17:58:17,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:58:17,710 INFO L215 NwaCegarLoop]: trace histogram [24, 23, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:58:17,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 17:58:17,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:58:17,911 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:58:17,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:58:17,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1500488781, now seen corresponding path program 1 times [2024-11-09 17:58:17,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:58:17,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889471744] [2024-11-09 17:58:17,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:58:17,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:58:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:58:18,345 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 17:58:18,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:58:18,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889471744] [2024-11-09 17:58:18,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889471744] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:58:18,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948386782] [2024-11-09 17:58:18,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:58:18,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:58:18,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:58:18,348 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) [2024-11-09 17:58:18,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 17:58:18,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:58:18,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 17:58:18,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:58:18,476 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 17:58:18,476 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:58:19,146 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 17:58:19,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948386782] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:58:19,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:58:19,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 51 [2024-11-09 17:58:19,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727222981] [2024-11-09 17:58:19,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:58:19,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-09 17:58:19,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:58:19,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-09 17:58:19,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2024-11-09 17:58:19,149 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand has 51 states, 51 states have (on average 2.235294117647059) internal successors, (114), 51 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:58:19,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:58:19,207 INFO L93 Difference]: Finished difference Result 132 states and 160 transitions. [2024-11-09 17:58:19,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-09 17:58:19,208 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.235294117647059) internal successors, (114), 51 states have internal predecessors, (114), 0 states have call successors, (0), 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 65 [2024-11-09 17:58:19,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:58:19,208 INFO L225 Difference]: With dead ends: 132 [2024-11-09 17:58:19,208 INFO L226 Difference]: Without dead ends: 116 [2024-11-09 17:58:19,209 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2024-11-09 17:58:19,210 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:58:19,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 137 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:58:19,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-09 17:58:19,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2024-11-09 17:58:19,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.0260869565217392) internal successors, (118), 115 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) [2024-11-09 17:58:19,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 118 transitions. [2024-11-09 17:58:19,217 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 118 transitions. Word has length 65 [2024-11-09 17:58:19,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:58:19,217 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 118 transitions. [2024-11-09 17:58:19,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.235294117647059) internal successors, (114), 51 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:58:19,217 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 118 transitions. [2024-11-09 17:58:19,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-09 17:58:19,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:58:19,219 INFO L215 NwaCegarLoop]: trace histogram [49, 48, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:58:19,231 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 17:58:19,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:58:19,423 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:58:19,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:58:19,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1863789030, now seen corresponding path program 2 times [2024-11-09 17:58:19,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:58:19,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010566843] [2024-11-09 17:58:19,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:58:19,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:58:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:58:21,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2357 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 17:58:21,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:58:21,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010566843] [2024-11-09 17:58:21,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010566843] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:58:21,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802427489] [2024-11-09 17:58:21,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 17:58:21,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:58:21,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:58:21,371 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) [2024-11-09 17:58:21,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 17:58:21,524 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 17:58:21,524 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:58:21,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-09 17:58:21,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:58:21,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2357 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 17:58:21,636 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:58:23,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2357 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 17:58:23,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802427489] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:58:23,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:58:23,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 101 [2024-11-09 17:58:23,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289872567] [2024-11-09 17:58:23,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:58:23,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2024-11-09 17:58:23,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:58:23,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2024-11-09 17:58:23,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2024-11-09 17:58:23,981 INFO L87 Difference]: Start difference. First operand 116 states and 118 transitions. Second operand has 101 states, 101 states have (on average 2.118811881188119) internal successors, (214), 101 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:58:24,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:58:24,083 INFO L93 Difference]: Finished difference Result 232 states and 285 transitions. [2024-11-09 17:58:24,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-11-09 17:58:24,084 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.118811881188119) internal successors, (214), 101 states have internal predecessors, (214), 0 states have call successors, (0), 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 115 [2024-11-09 17:58:24,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:58:24,088 INFO L225 Difference]: With dead ends: 232 [2024-11-09 17:58:24,088 INFO L226 Difference]: Without dead ends: 216 [2024-11-09 17:58:24,090 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2024-11-09 17:58:24,090 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 17:58:24,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 138 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 17:58:24,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-09 17:58:24,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2024-11-09 17:58:24,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.013953488372093) internal successors, (218), 215 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:58:24,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 218 transitions. [2024-11-09 17:58:24,102 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 218 transitions. Word has length 115 [2024-11-09 17:58:24,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:58:24,103 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 218 transitions. [2024-11-09 17:58:24,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.118811881188119) internal successors, (214), 101 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:58:24,103 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 218 transitions. [2024-11-09 17:58:24,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-09 17:58:24,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:58:24,105 INFO L215 NwaCegarLoop]: trace histogram [99, 98, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:58:24,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 17:58:24,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:58:24,306 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:58:24,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:58:24,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1035557976, now seen corresponding path program 3 times [2024-11-09 17:58:24,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:58:24,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134012064] [2024-11-09 17:58:24,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:58:24,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:58:24,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:58:28,983 INFO L134 CoverageAnalysis]: Checked inductivity of 9707 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 17:58:28,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:58:28,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134012064] [2024-11-09 17:58:28,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134012064] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:58:28,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041935912] [2024-11-09 17:58:28,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 17:58:28,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:58:28,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:58:28,985 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) [2024-11-09 17:58:28,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 17:58:29,124 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 17:58:29,124 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:58:29,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 17:58:29,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:58:29,476 INFO L134 CoverageAnalysis]: Checked inductivity of 9707 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 9702 trivial. 0 not checked. [2024-11-09 17:58:29,476 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:58:29,793 INFO L134 CoverageAnalysis]: Checked inductivity of 9707 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 9702 trivial. 0 not checked. [2024-11-09 17:58:29,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041935912] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:58:29,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:58:29,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 6, 6] total 107 [2024-11-09 17:58:29,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555267459] [2024-11-09 17:58:29,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:58:29,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2024-11-09 17:58:29,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:58:29,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2024-11-09 17:58:29,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5070, Invalid=6272, Unknown=0, NotChecked=0, Total=11342 [2024-11-09 17:58:29,799 INFO L87 Difference]: Start difference. First operand 216 states and 218 transitions. Second operand has 107 states, 107 states have (on average 2.196261682242991) internal successors, (235), 107 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:58:33,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:58:33,425 INFO L93 Difference]: Finished difference Result 243 states and 248 transitions. [2024-11-09 17:58:33,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2024-11-09 17:58:33,426 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 2.196261682242991) internal successors, (235), 107 states have internal predecessors, (235), 0 states have call successors, (0), 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 215 [2024-11-09 17:58:33,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:58:33,427 INFO L225 Difference]: With dead ends: 243 [2024-11-09 17:58:33,427 INFO L226 Difference]: Without dead ends: 220 [2024-11-09 17:58:33,433 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 422 SyntacticMatches, 2 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5746 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=15267, Invalid=26963, Unknown=0, NotChecked=0, Total=42230 [2024-11-09 17:58:33,433 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 17:58:33,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 167 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 17:58:33,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-09 17:58:33,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2024-11-09 17:58:33,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.0136986301369864) internal successors, (222), 219 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:58:33,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 222 transitions. [2024-11-09 17:58:33,444 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 222 transitions. Word has length 215 [2024-11-09 17:58:33,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:58:33,444 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 222 transitions. [2024-11-09 17:58:33,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 2.196261682242991) internal successors, (235), 107 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:58:33,444 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 222 transitions. [2024-11-09 17:58:33,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-09 17:58:33,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:58:33,446 INFO L215 NwaCegarLoop]: trace histogram [100, 99, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:58:33,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 17:58:33,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:58:33,651 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:58:33,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:58:33,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1784306456, now seen corresponding path program 4 times [2024-11-09 17:58:33,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:58:33,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870879852] [2024-11-09 17:58:33,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:58:33,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:58:33,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:58:38,094 INFO L134 CoverageAnalysis]: Checked inductivity of 9909 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 17:58:38,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:58:38,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870879852] [2024-11-09 17:58:38,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870879852] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:58:38,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730835725] [2024-11-09 17:58:38,096 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 17:58:38,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:58:38,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:58:38,100 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) [2024-11-09 17:58:38,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 17:58:38,356 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 17:58:38,356 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:58:38,361 INFO L255 TraceCheckSpWp]: Trace formula consists of 1064 conjuncts, 101 conjuncts are in the unsatisfiable core [2024-11-09 17:58:38,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:58:38,570 INFO L134 CoverageAnalysis]: Checked inductivity of 9909 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 17:58:38,570 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:58:47,151 INFO L134 CoverageAnalysis]: Checked inductivity of 9909 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 17:58:47,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730835725] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:58:47,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:58:47,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102, 102] total 203 [2024-11-09 17:58:47,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500421490] [2024-11-09 17:58:47,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:58:47,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 203 states [2024-11-09 17:58:47,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:58:47,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2024-11-09 17:58:47,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2024-11-09 17:58:47,168 INFO L87 Difference]: Start difference. First operand 220 states and 222 transitions. Second operand has 203 states, 203 states have (on average 2.0591133004926108) internal successors, (418), 203 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:58:47,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:58:47,621 INFO L93 Difference]: Finished difference Result 440 states and 544 transitions. [2024-11-09 17:58:47,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2024-11-09 17:58:47,622 INFO L78 Accepts]: Start accepts. Automaton has has 203 states, 203 states have (on average 2.0591133004926108) internal successors, (418), 203 states have internal predecessors, (418), 0 states have call successors, (0), 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 219 [2024-11-09 17:58:47,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:58:47,623 INFO L225 Difference]: With dead ends: 440 [2024-11-09 17:58:47,624 INFO L226 Difference]: Without dead ends: 422 [2024-11-09 17:58:47,626 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2024-11-09 17:58:47,626 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 17:58:47,626 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 277 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 17:58:47,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-11-09 17:58:47,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2024-11-09 17:58:47,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 421 states have (on average 1.007125890736342) internal successors, (424), 421 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:58:47,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 424 transitions. [2024-11-09 17:58:47,641 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 424 transitions. Word has length 219 [2024-11-09 17:58:47,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:58:47,642 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 424 transitions. [2024-11-09 17:58:47,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 203 states, 203 states have (on average 2.0591133004926108) internal successors, (418), 203 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:58:47,642 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 424 transitions. [2024-11-09 17:58:47,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2024-11-09 17:58:47,646 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:58:47,646 INFO L215 NwaCegarLoop]: trace histogram [201, 200, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:58:47,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 17:58:47,846 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,SelfDestructingSolverStorable10 [2024-11-09 17:58:47,847 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:58:47,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:58:47,847 INFO L85 PathProgramCache]: Analyzing trace with hash -182945987, now seen corresponding path program 5 times [2024-11-09 17:58:47,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:58:47,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780621675] [2024-11-09 17:58:47,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:58:47,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:58:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:59:07,026 INFO L134 CoverageAnalysis]: Checked inductivity of 40209 backedges. 0 proven. 40200 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 17:59:07,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:59:07,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780621675] [2024-11-09 17:59:07,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780621675] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:59:07,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233739610] [2024-11-09 17:59:07,027 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 17:59:07,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:59:07,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:59:07,028 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) [2024-11-09 17:59:07,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process