./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-33.i --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/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-33.i -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 e757956cd01e8f8c69326d5bb0d5b4dfedf7d0afa2bb59cb9f14ed88bb3446ed --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 11:58:52,874 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 11:58:52,974 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 11:58:52,979 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 11:58:52,980 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 11:58:53,010 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 11:58:53,011 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 11:58:53,011 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 11:58:53,012 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 11:58:53,014 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 11:58:53,014 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 11:58:53,014 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 11:58:53,015 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 11:58:53,015 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 11:58:53,015 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 11:58:53,016 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 11:58:53,016 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 11:58:53,016 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 11:58:53,016 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 11:58:53,017 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 11:58:53,017 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 11:58:53,018 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 11:58:53,019 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 11:58:53,019 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 11:58:53,019 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 11:58:53,020 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 11:58:53,020 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 11:58:53,020 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 11:58:53,020 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 11:58:53,021 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 11:58:53,022 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 11:58:53,022 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 11:58:53,022 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 11:58:53,022 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 11:58:53,023 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 11:58:53,023 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 11:58:53,023 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 11:58:53,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 11:58:53,024 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 11:58:53,024 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 11:58:53,024 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 11:58:53,025 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 11:58:53,025 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e757956cd01e8f8c69326d5bb0d5b4dfedf7d0afa2bb59cb9f14ed88bb3446ed [2024-10-11 11:58:53,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 11:58:53,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 11:58:53,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 11:58:53,274 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 11:58:53,275 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 11:58:53,276 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-33.i [2024-10-11 11:58:54,722 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 11:58:54,915 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 11:58:54,916 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-33.i [2024-10-11 11:58:54,924 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/12871657d/9ab9e5f64d9c48fb854c4785bd81c42a/FLAG9c4b9980c [2024-10-11 11:58:55,303 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/12871657d/9ab9e5f64d9c48fb854c4785bd81c42a [2024-10-11 11:58:55,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 11:58:55,307 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 11:58:55,310 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 11:58:55,310 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 11:58:55,315 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 11:58:55,316 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:58:55" (1/1) ... [2024-10-11 11:58:55,316 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2132628d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:55, skipping insertion in model container [2024-10-11 11:58:55,317 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:58:55" (1/1) ... [2024-10-11 11:58:55,348 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 11:58:55,516 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/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-33.i[915,928] [2024-10-11 11:58:55,573 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 11:58:55,583 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 11:58:55,594 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/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-33.i[915,928] [2024-10-11 11:58:55,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 11:58:55,637 INFO L204 MainTranslator]: Completed translation [2024-10-11 11:58:55,637 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:55 WrapperNode [2024-10-11 11:58:55,637 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 11:58:55,638 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 11:58:55,638 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 11:58:55,639 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 11:58:55,644 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:55" (1/1) ... [2024-10-11 11:58:55,652 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:55" (1/1) ... [2024-10-11 11:58:55,686 INFO L138 Inliner]: procedures = 26, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 150 [2024-10-11 11:58:55,686 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 11:58:55,687 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 11:58:55,687 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 11:58:55,687 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 11:58:55,698 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:55" (1/1) ... [2024-10-11 11:58:55,700 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:55" (1/1) ... [2024-10-11 11:58:55,708 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:55" (1/1) ... [2024-10-11 11:58:55,741 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 11:58:55,742 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:55" (1/1) ... [2024-10-11 11:58:55,742 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:55" (1/1) ... [2024-10-11 11:58:55,753 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:55" (1/1) ... [2024-10-11 11:58:55,759 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:55" (1/1) ... [2024-10-11 11:58:55,761 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:55" (1/1) ... [2024-10-11 11:58:55,763 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:55" (1/1) ... [2024-10-11 11:58:55,772 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 11:58:55,773 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 11:58:55,773 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 11:58:55,773 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 11:58:55,774 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:55" (1/1) ... [2024-10-11 11:58:55,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 11:58:55,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 11:58:55,809 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 11:58:55,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 11:58:55,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 11:58:55,859 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-11 11:58:55,860 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-11 11:58:55,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 11:58:55,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 11:58:55,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 11:58:55,939 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 11:58:55,941 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 11:58:56,317 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-10-11 11:58:56,318 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 11:58:56,356 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 11:58:56,356 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-11 11:58:56,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:58:56 BoogieIcfgContainer [2024-10-11 11:58:56,358 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 11:58:56,360 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 11:58:56,360 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 11:58:56,363 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 11:58:56,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 11:58:55" (1/3) ... [2024-10-11 11:58:56,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d0f4253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:58:56, skipping insertion in model container [2024-10-11 11:58:56,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:55" (2/3) ... [2024-10-11 11:58:56,366 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d0f4253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:58:56, skipping insertion in model container [2024-10-11 11:58:56,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:58:56" (3/3) ... [2024-10-11 11:58:56,367 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-while_file-33.i [2024-10-11 11:58:56,381 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 11:58:56,381 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 11:58:56,432 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 11:58:56,438 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;@18851c62, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 11:58:56,438 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 11:58:56,442 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 39 states have internal predecessors, (55), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-10-11 11:58:56,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-10-11 11:58:56,458 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 11:58:56,459 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 11:58:56,459 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 11:58:56,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 11:58:56,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1097897539, now seen corresponding path program 1 times [2024-10-11 11:58:56,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 11:58:56,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033076273] [2024-10-11 11:58:56,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 11:58:56,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 11:58:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:56,726 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 11:58:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:56,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 11:58:56,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:56,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 11:58:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:56,747 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-11 11:58:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:56,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-11 11:58:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:56,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-11 11:58:56,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:56,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-11 11:58:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:56,762 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-11 11:58:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:56,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-11 11:58:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:56,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-11 11:58:56,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:56,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-11 11:58:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:56,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-11 11:58:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:56,781 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-11 11:58:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:56,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-11 11:58:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:56,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-11 11:58:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:56,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-11 11:58:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:56,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-11 11:58:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:56,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-11 11:58:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:56,810 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-10-11 11:58:56,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 11:58:56,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033076273] [2024-10-11 11:58:56,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033076273] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 11:58:56,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 11:58:56,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 11:58:56,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415574464] [2024-10-11 11:58:56,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 11:58:56,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 11:58:56,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 11:58:56,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 11:58:56,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 11:58:56,846 INFO L87 Difference]: Start difference. First operand has 59 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 39 states have internal predecessors, (55), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-10-11 11:58:56,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 11:58:56,883 INFO L93 Difference]: Finished difference Result 115 states and 198 transitions. [2024-10-11 11:58:56,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 11:58:56,887 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 114 [2024-10-11 11:58:56,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 11:58:56,897 INFO L225 Difference]: With dead ends: 115 [2024-10-11 11:58:56,897 INFO L226 Difference]: Without dead ends: 57 [2024-10-11 11:58:56,901 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 11:58:56,906 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 11:58:56,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 11:58:56,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-10-11 11:58:56,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-10-11 11:58:56,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 37 states have internal predecessors, (49), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-10-11 11:58:56,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 85 transitions. [2024-10-11 11:58:56,949 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 85 transitions. Word has length 114 [2024-10-11 11:58:56,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 11:58:56,949 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 85 transitions. [2024-10-11 11:58:56,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-10-11 11:58:56,950 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 85 transitions. [2024-10-11 11:58:56,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-10-11 11:58:56,952 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 11:58:56,953 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 11:58:56,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 11:58:56,953 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 11:58:56,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 11:58:56,954 INFO L85 PathProgramCache]: Analyzing trace with hash 2022397443, now seen corresponding path program 1 times [2024-10-11 11:58:56,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 11:58:56,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126617245] [2024-10-11 11:58:56,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 11:58:56,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 11:58:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:57,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 11:58:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:57,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 11:58:57,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:57,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 11:58:57,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:57,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-11 11:58:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:57,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-11 11:58:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:57,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-11 11:58:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:57,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-11 11:58:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:57,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-11 11:58:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:57,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-11 11:58:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:57,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-11 11:58:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:57,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-11 11:58:57,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:57,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-11 11:58:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:57,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-11 11:58:57,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:57,876 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-11 11:58:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:57,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-11 11:58:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:57,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-11 11:58:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:57,911 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-11 11:58:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:57,919 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-11 11:58:57,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:57,929 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-10-11 11:58:57,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 11:58:57,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126617245] [2024-10-11 11:58:57,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126617245] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 11:58:57,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 11:58:57,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 11:58:57,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723013438] [2024-10-11 11:58:57,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 11:58:57,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 11:58:57,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 11:58:57,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 11:58:57,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 11:58:57,936 INFO L87 Difference]: Start difference. First operand 57 states and 85 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-10-11 11:58:58,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 11:58:58,235 INFO L93 Difference]: Finished difference Result 174 states and 261 transitions. [2024-10-11 11:58:58,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 11:58:58,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 114 [2024-10-11 11:58:58,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 11:58:58,239 INFO L225 Difference]: With dead ends: 174 [2024-10-11 11:58:58,240 INFO L226 Difference]: Without dead ends: 118 [2024-10-11 11:58:58,241 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 11:58:58,243 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 63 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 11:58:58,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 195 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 11:58:58,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-10-11 11:58:58,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 105. [2024-10-11 11:58:58,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 66 states have (on average 1.303030303030303) internal successors, (86), 66 states have internal predecessors, (86), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-10-11 11:58:58,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 158 transitions. [2024-10-11 11:58:58,281 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 158 transitions. Word has length 114 [2024-10-11 11:58:58,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 11:58:58,282 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 158 transitions. [2024-10-11 11:58:58,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-10-11 11:58:58,282 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 158 transitions. [2024-10-11 11:58:58,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-10-11 11:58:58,286 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 11:58:58,286 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 11:58:58,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 11:58:58,287 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 11:58:58,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 11:58:58,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1177880038, now seen corresponding path program 1 times [2024-10-11 11:58:58,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 11:58:58,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145938581] [2024-10-11 11:58:58,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 11:58:58,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 11:58:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:58,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 11:58:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:58,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 11:58:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:58,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-11 11:58:58,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:58,540 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-11 11:58:58,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:58,546 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-11 11:58:58,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:58,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-11 11:58:58,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:58,564 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-11 11:58:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:58,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-11 11:58:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:58,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-11 11:58:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:58,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-11 11:58:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:58,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-11 11:58:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:58,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-11 11:58:58,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:58,606 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-11 11:58:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:58,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-11 11:58:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:58,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-11 11:58:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:58,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-11 11:58:58,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:58,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-11 11:58:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:58,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-11 11:58:58,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 11:58:58,635 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-10-11 11:58:58,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 11:58:58,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145938581] [2024-10-11 11:58:58,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145938581] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 11:58:58,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 11:58:58,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 11:58:58,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245046006] [2024-10-11 11:58:58,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 11:58:58,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 11:58:58,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 11:58:58,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 11:58:58,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 11:58:58,638 INFO L87 Difference]: Start difference. First operand 105 states and 158 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-10-11 11:58:58,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 11:58:58,852 INFO L93 Difference]: Finished difference Result 183 states and 272 transitions. [2024-10-11 11:58:58,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 11:58:58,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 115 [2024-10-11 11:58:58,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 11:58:58,854 INFO L225 Difference]: With dead ends: 183 [2024-10-11 11:58:58,857 INFO L226 Difference]: Without dead ends: 114 [2024-10-11 11:58:58,858 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 11:58:58,859 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 60 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 11:58:58,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 200 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 11:58:58,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-10-11 11:58:58,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2024-10-11 11:58:58,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 67 states have (on average 1.2835820895522387) internal successors, (86), 67 states have internal predecessors, (86), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-10-11 11:58:58,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 158 transitions. [2024-10-11 11:58:58,885 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 158 transitions. Word has length 115 [2024-10-11 11:58:58,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 11:58:58,886 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 158 transitions. [2024-10-11 11:58:58,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-10-11 11:58:58,886 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 158 transitions. [2024-10-11 11:58:58,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-10-11 11:58:58,888 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 11:58:58,888 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 11:58:58,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 11:58:58,888 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 11:58:58,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 11:58:58,889 INFO L85 PathProgramCache]: Analyzing trace with hash -112564762, now seen corresponding path program 1 times [2024-10-11 11:58:58,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 11:58:58,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401663069] [2024-10-11 11:58:58,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 11:58:58,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 11:58:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat