./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-54.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-54.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 011eeefd9cffe2be7e7193891aba89325b816eb252a09909cc785439e897f756 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 21:19:16,644 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 21:19:16,697 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 21:19:16,702 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 21:19:16,703 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 21:19:16,725 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 21:19:16,726 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 21:19:16,726 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 21:19:16,727 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 21:19:16,727 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 21:19:16,728 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 21:19:16,728 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 21:19:16,728 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 21:19:16,728 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 21:19:16,729 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 21:19:16,729 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 21:19:16,729 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 21:19:16,729 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 21:19:16,729 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 21:19:16,730 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 21:19:16,732 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 21:19:16,732 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 21:19:16,732 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 21:19:16,733 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 21:19:16,733 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 21:19:16,733 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 21:19:16,733 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 21:19:16,733 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 21:19:16,733 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 21:19:16,733 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 21:19:16,734 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 21:19:16,734 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 21:19:16,734 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 21:19:16,734 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 21:19:16,734 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 21:19:16,734 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 21:19:16,734 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 21:19:16,735 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 21:19:16,735 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 21:19:16,735 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 21:19:16,735 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 21:19:16,737 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 21:19:16,737 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 011eeefd9cffe2be7e7193891aba89325b816eb252a09909cc785439e897f756 [2024-11-18 21:19:16,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 21:19:16,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 21:19:16,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 21:19:16,983 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 21:19:16,983 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 21:19:16,984 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-54.i [2024-11-18 21:19:18,199 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 21:19:18,421 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 21:19:18,422 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-54.i [2024-11-18 21:19:18,431 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de869bc0f/02c345ce83bc4c79974fd840c9822843/FLAG7b786d390 [2024-11-18 21:19:18,441 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de869bc0f/02c345ce83bc4c79974fd840c9822843 [2024-11-18 21:19:18,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 21:19:18,444 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 21:19:18,445 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 21:19:18,445 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 21:19:18,450 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 21:19:18,450 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:19:18" (1/1) ... [2024-11-18 21:19:18,452 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13a5b591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:19:18, skipping insertion in model container [2024-11-18 21:19:18,452 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:19:18" (1/1) ... [2024-11-18 21:19:18,476 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 21:19:18,606 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-54.i[919,932] [2024-11-18 21:19:18,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 21:19:18,693 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 21:19:18,706 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-54.i[919,932] [2024-11-18 21:19:18,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 21:19:18,743 INFO L204 MainTranslator]: Completed translation [2024-11-18 21:19:18,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:19:18 WrapperNode [2024-11-18 21:19:18,744 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 21:19:18,744 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 21:19:18,745 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 21:19:18,745 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 21:19:18,750 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:19:18" (1/1) ... [2024-11-18 21:19:18,758 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:19:18" (1/1) ... [2024-11-18 21:19:18,784 INFO L138 Inliner]: procedures = 26, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 199 [2024-11-18 21:19:18,784 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 21:19:18,785 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 21:19:18,788 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 21:19:18,788 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 21:19:18,797 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:19:18" (1/1) ... [2024-11-18 21:19:18,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:19:18" (1/1) ... [2024-11-18 21:19:18,799 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:19:18" (1/1) ... [2024-11-18 21:19:18,811 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]. [2024-11-18 21:19:18,814 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:19:18" (1/1) ... [2024-11-18 21:19:18,815 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:19:18" (1/1) ... [2024-11-18 21:19:18,821 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:19:18" (1/1) ... [2024-11-18 21:19:18,824 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:19:18" (1/1) ... [2024-11-18 21:19:18,826 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:19:18" (1/1) ... [2024-11-18 21:19:18,827 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:19:18" (1/1) ... [2024-11-18 21:19:18,829 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 21:19:18,836 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 21:19:18,836 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 21:19:18,836 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 21:19:18,837 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:19:18" (1/1) ... [2024-11-18 21:19:18,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 21:19:18,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 21:19:18,863 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 21:19:18,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 21:19:18,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 21:19:18,903 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 21:19:18,904 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 21:19:18,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 21:19:18,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 21:19:18,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 21:19:18,974 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 21:19:18,975 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 21:19:19,243 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-18 21:19:19,243 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 21:19:19,253 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 21:19:19,253 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 21:19:19,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:19:19 BoogieIcfgContainer [2024-11-18 21:19:19,257 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 21:19:19,259 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 21:19:19,259 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 21:19:19,261 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 21:19:19,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:19:18" (1/3) ... [2024-11-18 21:19:19,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52bab369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:19:19, skipping insertion in model container [2024-11-18 21:19:19,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:19:18" (2/3) ... [2024-11-18 21:19:19,263 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52bab369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:19:19, skipping insertion in model container [2024-11-18 21:19:19,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:19:19" (3/3) ... [2024-11-18 21:19:19,264 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-54.i [2024-11-18 21:19:19,279 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 21:19:19,279 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 21:19:19,329 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 21:19:19,334 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;@7762197c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 21:19:19,334 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 21:19:19,340 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 57 states have (on average 1.456140350877193) internal successors, (83), 58 states have internal predecessors, (83), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-18 21:19:19,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-18 21:19:19,350 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:19:19,351 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 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, 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] [2024-11-18 21:19:19,351 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:19:19,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:19:19,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1434156324, now seen corresponding path program 1 times [2024-11-18 21:19:19,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:19:19,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552551315] [2024-11-18 21:19:19,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:19:19,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:19:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:19:19,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2024-11-18 21:19:19,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:19:19,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552551315] [2024-11-18 21:19:19,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552551315] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 21:19:19,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902168406] [2024-11-18 21:19:19,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:19:19,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 21:19:19,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 21:19:19,639 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 21:19:19,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 21:19:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:19:19,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 21:19:19,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 21:19:19,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2024-11-18 21:19:19,858 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 21:19:19,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902168406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:19:19,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 21:19:19,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 21:19:19,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847925084] [2024-11-18 21:19:19,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:19:19,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 21:19:19,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:19:19,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 21:19:19,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 21:19:19,886 INFO L87 Difference]: Start difference. First operand has 85 states, 57 states have (on average 1.456140350877193) internal successors, (83), 58 states have internal predecessors, (83), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-18 21:19:19,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:19:19,906 INFO L93 Difference]: Finished difference Result 163 states and 285 transitions. [2024-11-18 21:19:19,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 21:19:19,907 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 2 states have call successors, (25) Word has length 167 [2024-11-18 21:19:19,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:19:19,912 INFO L225 Difference]: With dead ends: 163 [2024-11-18 21:19:19,913 INFO L226 Difference]: Without dead ends: 81 [2024-11-18 21:19:19,915 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 21:19:19,917 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 21:19:19,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 21:19:19,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-18 21:19:19,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-11-18 21:19:19,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 54 states have (on average 1.4074074074074074) internal successors, (76), 54 states have internal predecessors, (76), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-18 21:19:19,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 126 transitions. [2024-11-18 21:19:19,951 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 126 transitions. Word has length 167 [2024-11-18 21:19:19,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:19:19,951 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 126 transitions. [2024-11-18 21:19:19,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-18 21:19:19,952 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 126 transitions. [2024-11-18 21:19:19,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-18 21:19:19,956 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:19:19,956 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 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, 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] [2024-11-18 21:19:19,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 21:19:20,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 21:19:20,161 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:19:20,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:19:20,161 INFO L85 PathProgramCache]: Analyzing trace with hash -783815582, now seen corresponding path program 1 times [2024-11-18 21:19:20,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:19:20,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560534438] [2024-11-18 21:19:20,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:19:20,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:19:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:19:20,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-18 21:19:20,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:19:20,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560534438] [2024-11-18 21:19:20,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560534438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:19:20,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:19:20,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 21:19:20,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900614768] [2024-11-18 21:19:20,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:19:20,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 21:19:20,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:19:20,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 21:19:20,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 21:19:20,501 INFO L87 Difference]: Start difference. First operand 81 states and 126 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 21:19:20,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:19:20,671 INFO L93 Difference]: Finished difference Result 220 states and 339 transitions. [2024-11-18 21:19:20,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 21:19:20,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 167 [2024-11-18 21:19:20,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:19:20,673 INFO L225 Difference]: With dead ends: 220 [2024-11-18 21:19:20,674 INFO L226 Difference]: Without dead ends: 142 [2024-11-18 21:19:20,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 21:19:20,675 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 108 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 21:19:20,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 321 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 21:19:20,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-18 21:19:20,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 109. [2024-11-18 21:19:20,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 79 states have (on average 1.4556962025316456) internal successors, (115), 80 states have internal predecessors, (115), 27 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-18 21:19:20,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 169 transitions. [2024-11-18 21:19:20,694 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 169 transitions. Word has length 167 [2024-11-18 21:19:20,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:19:20,695 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 169 transitions. [2024-11-18 21:19:20,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 21:19:20,695 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 169 transitions. [2024-11-18 21:19:20,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-18 21:19:20,698 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:19:20,698 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 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, 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] [2024-11-18 21:19:20,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 21:19:20,698 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:19:20,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:19:20,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1220943712, now seen corresponding path program 1 times [2024-11-18 21:19:20,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:19:20,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171043578] [2024-11-18 21:19:20,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:19:20,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:19:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:19:20,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-18 21:19:20,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:19:20,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171043578] [2024-11-18 21:19:20,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171043578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:19:20,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:19:20,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 21:19:20,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960646175] [2024-11-18 21:19:20,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:19:20,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 21:19:20,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:19:20,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 21:19:20,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 21:19:20,958 INFO L87 Difference]: Start difference. First operand 109 states and 169 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 21:19:21,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:19:21,112 INFO L93 Difference]: Finished difference Result 319 states and 497 transitions. [2024-11-18 21:19:21,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 21:19:21,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 167 [2024-11-18 21:19:21,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:19:21,120 INFO L225 Difference]: With dead ends: 319 [2024-11-18 21:19:21,120 INFO L226 Difference]: Without dead ends: 213 [2024-11-18 21:19:21,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 21:19:21,139 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 106 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 21:19:21,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 361 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 21:19:21,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-18 21:19:21,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 183. [2024-11-18 21:19:21,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 126 states have (on average 1.4285714285714286) internal successors, (180), 127 states have internal predecessors, (180), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-18 21:19:21,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 284 transitions. [2024-11-18 21:19:21,187 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 284 transitions. Word has length 167 [2024-11-18 21:19:21,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:19:21,188 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 284 transitions. [2024-11-18 21:19:21,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 21:19:21,188 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 284 transitions. [2024-11-18 21:19:21,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-18 21:19:21,193 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:19:21,193 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 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, 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] [2024-11-18 21:19:21,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 21:19:21,193 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:19:21,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:19:21,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1452642644, now seen corresponding path program 1 times [2024-11-18 21:19:21,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:19:21,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072739589] [2024-11-18 21:19:21,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:19:21,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:19:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:19:21,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-18 21:19:21,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:19:21,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072739589] [2024-11-18 21:19:21,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072739589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:19:21,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:19:21,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 21:19:21,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245687511] [2024-11-18 21:19:21,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:19:21,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 21:19:21,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:19:21,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 21:19:21,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 21:19:21,515 INFO L87 Difference]: Start difference. First operand 183 states and 284 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 21:19:21,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:19:21,722 INFO L93 Difference]: Finished difference Result 411 states and 644 transitions. [2024-11-18 21:19:21,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 21:19:21,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 168 [2024-11-18 21:19:21,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:19:21,724 INFO L225 Difference]: With dead ends: 411 [2024-11-18 21:19:21,724 INFO L226 Difference]: Without dead ends: 299 [2024-11-18 21:19:21,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 21:19:21,727 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 87 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 21:19:21,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 356 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 21:19:21,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-18 21:19:21,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 291. [2024-11-18 21:19:21,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 205 states have (on average 1.448780487804878) internal successors, (297), 207 states have internal predecessors, (297), 79 states have call successors, (79), 6 states have call predecessors, (79), 6 states have return successors, (79), 77 states have call predecessors, (79), 79 states have call successors, (79) [2024-11-18 21:19:21,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 455 transitions. [2024-11-18 21:19:21,774 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 455 transitions. Word has length 168 [2024-11-18 21:19:21,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:19:21,776 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 455 transitions. [2024-11-18 21:19:21,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 21:19:21,776 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 455 transitions. [2024-11-18 21:19:21,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-18 21:19:21,779 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:19:21,780 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 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, 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] [2024-11-18 21:19:21,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 21:19:21,781 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:19:21,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:19:21,782 INFO L85 PathProgramCache]: Analyzing trace with hash 848179946, now seen corresponding path program 1 times [2024-11-18 21:19:21,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:19:21,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056154802] [2024-11-18 21:19:21,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:19:21,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:19:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:19:22,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 27 proven. 45 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2024-11-18 21:19:22,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:19:22,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056154802] [2024-11-18 21:19:22,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056154802] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 21:19:22,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308694020] [2024-11-18 21:19:22,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:19:22,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 21:19:22,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 21:19:22,024 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 21:19:22,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 21:19:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:19:22,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 21:19:22,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 21:19:22,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 582 proven. 45 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2024-11-18 21:19:22,354 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 21:19:22,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 27 proven. 45 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2024-11-18 21:19:22,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308694020] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 21:19:22,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 21:19:22,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-18 21:19:22,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123948696] [2024-11-18 21:19:22,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 21:19:22,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 21:19:22,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:19:22,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 21:19:22,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 21:19:22,562 INFO L87 Difference]: Start difference. First operand 291 states and 455 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2024-11-18 21:19:22,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:19:22,762 INFO L93 Difference]: Finished difference Result 532 states and 823 transitions. [2024-11-18 21:19:22,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 21:19:22,763 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 168 [2024-11-18 21:19:22,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:19:22,768 INFO L225 Difference]: With dead ends: 532 [2024-11-18 21:19:22,768 INFO L226 Difference]: Without dead ends: 309 [2024-11-18 21:19:22,769 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 333 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-18 21:19:22,770 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 61 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 21:19:22,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 287 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 21:19:22,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-11-18 21:19:22,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 303. [2024-11-18 21:19:22,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 214 states have (on average 1.4018691588785046) internal successors, (300), 216 states have internal predecessors, (300), 79 states have call successors, (79), 9 states have call predecessors, (79), 9 states have return successors, (79), 77 states have call predecessors, (79), 79 states have call successors, (79) [2024-11-18 21:19:22,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 458 transitions. [2024-11-18 21:19:22,808 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 458 transitions. Word has length 168 [2024-11-18 21:19:22,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:19:22,808 INFO L471 AbstractCegarLoop]: Abstraction has 303 states and 458 transitions. [2024-11-18 21:19:22,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2024-11-18 21:19:22,808 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 458 transitions. [2024-11-18 21:19:22,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-18 21:19:22,811 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:19:22,812 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 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, 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] [2024-11-18 21:19:22,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 21:19:23,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 21:19:23,018 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:19:23,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:19:23,018 INFO L85 PathProgramCache]: Analyzing trace with hash -740167956, now seen corresponding path program 1 times [2024-11-18 21:19:23,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:19:23,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327747375] [2024-11-18 21:19:23,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:19:23,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:19:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 21:19:23,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1652957263] [2024-11-18 21:19:23,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:19:23,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 21:19:23,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 21:19:23,122 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 21:19:23,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 21:19:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:19:23,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-18 21:19:23,270 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 21:19:24,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 788 proven. 135 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2024-11-18 21:19:24,348 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 21:20:38,702 WARN L286 SmtUtils]: Spent 6.16s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-18 21:20:51,018 WARN L286 SmtUtils]: Spent 5.95s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)