./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array30_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array30_pattern.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bf9fb5599b361d63a40d668c035ff2f49b2f61ec342dc99fdd2f9d975d29190c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 22:15:01,595 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 22:15:01,660 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 22:15:01,667 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 22:15:01,668 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 22:15:01,700 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 22:15:01,701 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 22:15:01,702 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 22:15:01,702 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 22:15:01,703 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 22:15:01,703 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 22:15:01,704 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 22:15:01,704 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 22:15:01,705 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 22:15:01,706 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 22:15:01,706 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 22:15:01,706 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 22:15:01,706 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 22:15:01,706 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 22:15:01,707 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 22:15:01,707 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 22:15:01,707 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 22:15:01,710 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 22:15:01,710 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 22:15:01,710 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 22:15:01,710 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 22:15:01,710 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 22:15:01,710 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 22:15:01,711 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 22:15:01,711 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 22:15:01,711 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 22:15:01,711 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 22:15:01,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:15:01,711 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 22:15:01,711 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 22:15:01,711 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 22:15:01,712 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 22:15:01,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 22:15:01,712 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 22:15:01,712 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 22:15:01,712 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 22:15:01,714 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 22:15:01,714 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf9fb5599b361d63a40d668c035ff2f49b2f61ec342dc99fdd2f9d975d29190c [2024-10-10 22:15:01,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 22:15:01,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 22:15:01,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 22:15:01,953 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 22:15:01,953 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 22:15:01,954 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array30_pattern.c [2024-10-10 22:15:03,184 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 22:15:03,321 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 22:15:03,322 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array30_pattern.c [2024-10-10 22:15:03,328 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/9ada660b2/91c4e3ff46bb4986bfa342cc5a25d4e7/FLAGe0cbcfc60 [2024-10-10 22:15:03,338 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/9ada660b2/91c4e3ff46bb4986bfa342cc5a25d4e7 [2024-10-10 22:15:03,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 22:15:03,342 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 22:15:03,343 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 22:15:03,343 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 22:15:03,347 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 22:15:03,348 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:15:03" (1/1) ... [2024-10-10 22:15:03,348 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ed1cb5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:15:03, skipping insertion in model container [2024-10-10 22:15:03,348 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:15:03" (1/1) ... [2024-10-10 22:15:03,361 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 22:15:03,485 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array30_pattern.c[1189,1202] [2024-10-10 22:15:03,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:15:03,504 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 22:15:03,513 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array30_pattern.c[1189,1202] [2024-10-10 22:15:03,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:15:03,531 INFO L204 MainTranslator]: Completed translation [2024-10-10 22:15:03,532 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:15:03 WrapperNode [2024-10-10 22:15:03,532 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 22:15:03,533 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 22:15:03,533 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 22:15:03,533 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 22:15:03,538 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:15:03" (1/1) ... [2024-10-10 22:15:03,543 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:15:03" (1/1) ... [2024-10-10 22:15:03,558 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 78 [2024-10-10 22:15:03,558 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 22:15:03,559 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 22:15:03,559 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 22:15:03,559 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 22:15:03,567 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:15:03" (1/1) ... [2024-10-10 22:15:03,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:15:03" (1/1) ... [2024-10-10 22:15:03,569 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:15:03" (1/1) ... [2024-10-10 22:15:03,580 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 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]. [2024-10-10 22:15:03,580 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:15:03" (1/1) ... [2024-10-10 22:15:03,580 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:15:03" (1/1) ... [2024-10-10 22:15:03,583 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:15:03" (1/1) ... [2024-10-10 22:15:03,585 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:15:03" (1/1) ... [2024-10-10 22:15:03,586 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:15:03" (1/1) ... [2024-10-10 22:15:03,587 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:15:03" (1/1) ... [2024-10-10 22:15:03,588 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 22:15:03,589 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 22:15:03,589 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 22:15:03,589 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 22:15:03,590 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:15:03" (1/1) ... [2024-10-10 22:15:03,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:15:03,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:15:03,617 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-10 22:15:03,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-10 22:15:03,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 22:15:03,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 22:15:03,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-10 22:15:03,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-10 22:15:03,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-10 22:15:03,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-10 22:15:03,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 22:15:03,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 22:15:03,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-10 22:15:03,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-10 22:15:03,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-10 22:15:03,768 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 22:15:03,773 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 22:15:03,905 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-10-10 22:15:03,905 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 22:15:03,929 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 22:15:03,929 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-10 22:15:03,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:15:03 BoogieIcfgContainer [2024-10-10 22:15:03,930 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 22:15:03,931 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 22:15:03,931 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 22:15:03,934 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 22:15:03,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 10:15:03" (1/3) ... [2024-10-10 22:15:03,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c8b7a53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:15:03, skipping insertion in model container [2024-10-10 22:15:03,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:15:03" (2/3) ... [2024-10-10 22:15:03,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c8b7a53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:15:03, skipping insertion in model container [2024-10-10 22:15:03,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:15:03" (3/3) ... [2024-10-10 22:15:03,936 INFO L112 eAbstractionObserver]: Analyzing ICFG array30_pattern.c [2024-10-10 22:15:03,950 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 22:15:03,951 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 22:15:03,996 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 22:15:04,001 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;@63289601, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 22:15:04,002 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 22:15:04,007 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:15:04,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-10 22:15:04,012 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:15:04,013 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:15:04,013 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:15:04,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:15:04,019 INFO L85 PathProgramCache]: Analyzing trace with hash 815788558, now seen corresponding path program 1 times [2024-10-10 22:15:04,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:15:04,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016630376] [2024-10-10 22:15:04,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:15:04,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:15:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:15:04,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:15:04,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:15:04,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016630376] [2024-10-10 22:15:04,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016630376] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:15:04,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:15:04,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:15:04,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168274367] [2024-10-10 22:15:04,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:15:04,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-10 22:15:04,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:15:04,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-10 22:15:04,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-10 22:15:04,177 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:15:04,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:15:04,195 INFO L93 Difference]: Finished difference Result 34 states and 53 transitions. [2024-10-10 22:15:04,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-10 22:15:04,200 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-10 22:15:04,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:15:04,206 INFO L225 Difference]: With dead ends: 34 [2024-10-10 22:15:04,207 INFO L226 Difference]: Without dead ends: 16 [2024-10-10 22:15:04,209 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-10 22:15:04,215 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 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 [2024-10-10 22:15:04,216 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:15:04,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-10-10 22:15:04,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-10-10 22:15:04,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:15:04,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2024-10-10 22:15:04,243 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 9 [2024-10-10 22:15:04,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:15:04,244 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2024-10-10 22:15:04,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:15:04,244 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2024-10-10 22:15:04,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-10 22:15:04,245 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:15:04,245 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:15:04,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 22:15:04,246 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:15:04,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:15:04,247 INFO L85 PathProgramCache]: Analyzing trace with hash -709286843, now seen corresponding path program 1 times [2024-10-10 22:15:04,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:15:04,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115964952] [2024-10-10 22:15:04,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:15:04,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:15:04,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:15:04,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:15:04,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:15:04,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115964952] [2024-10-10 22:15:04,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115964952] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:15:04,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:15:04,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-10 22:15:04,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101944358] [2024-10-10 22:15:04,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:15:04,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-10 22:15:04,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:15:04,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-10 22:15:04,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:15:04,430 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:15:04,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:15:04,491 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2024-10-10 22:15:04,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-10 22:15:04,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-10 22:15:04,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:15:04,493 INFO L225 Difference]: With dead ends: 32 [2024-10-10 22:15:04,493 INFO L226 Difference]: Without dead ends: 24 [2024-10-10 22:15:04,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:15:04,496 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 37 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:15:04,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 9 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:15:04,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-10-10 22:15:04,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2024-10-10 22:15:04,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:15:04,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-10-10 22:15:04,502 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 9 [2024-10-10 22:15:04,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:15:04,502 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-10-10 22:15:04,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:15:04,504 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-10-10 22:15:04,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-10 22:15:04,504 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:15:04,504 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:15:04,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-10 22:15:04,504 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:15:04,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:15:04,505 INFO L85 PathProgramCache]: Analyzing trace with hash 750219625, now seen corresponding path program 1 times [2024-10-10 22:15:04,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:15:04,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998087482] [2024-10-10 22:15:04,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:15:04,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:15:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:15:04,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 22:15:04,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:15:04,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998087482] [2024-10-10 22:15:04,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998087482] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:15:04,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:15:04,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-10 22:15:04,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804586850] [2024-10-10 22:15:04,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:15:04,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 22:15:04,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:15:04,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 22:15:04,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 22:15:04,621 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:15:04,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:15:04,675 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2024-10-10 22:15:04,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 22:15:04,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-10-10 22:15:04,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:15:04,677 INFO L225 Difference]: With dead ends: 42 [2024-10-10 22:15:04,677 INFO L226 Difference]: Without dead ends: 28 [2024-10-10 22:15:04,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 22:15:04,678 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 12 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:15:04,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 25 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:15:04,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-10-10 22:15:04,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 20. [2024-10-10 22:15:04,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:15:04,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-10-10 22:15:04,685 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 15 [2024-10-10 22:15:04,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:15:04,685 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-10-10 22:15:04,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:15:04,685 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-10-10 22:15:04,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-10 22:15:04,685 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:15:04,686 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:15:04,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-10 22:15:04,686 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:15:04,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:15:04,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1403312833, now seen corresponding path program 1 times [2024-10-10 22:15:04,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:15:04,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994616726] [2024-10-10 22:15:04,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:15:04,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:15:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:15:04,967 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 22:15:04,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:15:04,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994616726] [2024-10-10 22:15:04,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994616726] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:15:04,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:15:04,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-10 22:15:04,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484829720] [2024-10-10 22:15:04,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:15:04,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-10 22:15:04,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:15:04,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-10 22:15:04,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:15:04,973 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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) [2024-10-10 22:15:05,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:15:05,030 INFO L93 Difference]: Finished difference Result 43 states and 55 transitions. [2024-10-10 22:15:05,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-10 22:15:05,031 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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) Word has length 19 [2024-10-10 22:15:05,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:15:05,032 INFO L225 Difference]: With dead ends: 43 [2024-10-10 22:15:05,032 INFO L226 Difference]: Without dead ends: 28 [2024-10-10 22:15:05,033 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:15:05,034 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:15:05,034 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 29 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:15:05,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-10-10 22:15:05,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 21. [2024-10-10 22:15:05,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:15:05,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-10-10 22:15:05,037 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 19 [2024-10-10 22:15:05,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:15:05,038 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-10-10 22:15:05,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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) [2024-10-10 22:15:05,038 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-10-10 22:15:05,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-10 22:15:05,038 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:15:05,039 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:15:05,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-10 22:15:05,039 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:15:05,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:15:05,039 INFO L85 PathProgramCache]: Analyzing trace with hash 392195583, now seen corresponding path program 1 times [2024-10-10 22:15:05,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:15:05,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753511143] [2024-10-10 22:15:05,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:15:05,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:15:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-10 22:15:05,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1217999227] [2024-10-10 22:15:05,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:15:05,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:15:05,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:15:05,062 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:15:05,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-10 22:15:05,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:15:05,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-10 22:15:05,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:15:05,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-10 22:15:05,427 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:15:05,427 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:15:21,555 WARN L873 $PredicateComparison]: unable to prove that (= (* c_~ARR_SIZE~0 c_~ARR_SIZE~0 c_~ARR_SIZE~0) (+ (* (select (select |c_#memory_int#1| |c_ULTIMATE.start_main_~#array~0#1.base|) (+ (* |c_ULTIMATE.start_main_~row~0#1| (* c_~ARR_SIZE~0 4)) |c_ULTIMATE.start_main_~#array~0#1.offset|)) 3) (* |c_ULTIMATE.start_main_~sum~0#1| 3) c_~ARR_SIZE~0)) is different from true [2024-10-10 22:15:21,642 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 29 treesize of output 27 [2024-10-10 22:15:21,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 44 [2024-10-10 22:15:29,703 WARN L873 $PredicateComparison]: unable to prove that (or (< (+ |c_ULTIMATE.start_main_~column~0#1| 1) c_~ARR_SIZE~0) (and (= (* c_~ARR_SIZE~0 c_~ARR_SIZE~0 c_~ARR_SIZE~0) (+ (* |c_ULTIMATE.start_main_~sum~0#1| 3) c_~ARR_SIZE~0 (* 3 |c_ULTIMATE.start_diff_#res#1|))) (= (+ (* |c_ULTIMATE.start_main_~row~0#1| c_~ARR_SIZE~0) |c_ULTIMATE.start_main_~column~0#1|) 0))) is different from true [2024-10-10 22:15:53,978 WARN L286 SmtUtils]: Spent 12.06s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-10-10 22:16:06,115 WARN L286 SmtUtils]: Spent 12.09s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-10-10 22:16:22,392 WARN L286 SmtUtils]: Spent 12.07s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-10-10 22:16:39,747 WARN L286 SmtUtils]: Spent 9.15s on a formula simplification that was a NOOP. DAG size: 40 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-10 22:16:39,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-10-10 22:16:39,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:16:39,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753511143] [2024-10-10 22:16:39,962 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-10 22:16:39,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217999227] [2024-10-10 22:16:39,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217999227] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:16:39,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-10 22:16:39,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2024-10-10 22:16:39,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527008141] [2024-10-10 22:16:39,963 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-10 22:16:39,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-10 22:16:39,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:16:39,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-10 22:16:39,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=263, Unknown=6, NotChecked=70, Total=420 [2024-10-10 22:16:39,966 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:16:44,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers []