./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-14.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_fillercodesize_ps-cn-250_file-14.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 d03dd1fa0ccd6c2f276f8e830c5c45c3023586b3294c63b9f2b76eedbdce4e31 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 19:28:58,724 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 19:28:58,786 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 19:28:58,794 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 19:28:58,795 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 19:28:58,827 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 19:28:58,827 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 19:28:58,828 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 19:28:58,828 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 19:28:58,829 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 19:28:58,829 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 19:28:58,829 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 19:28:58,830 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 19:28:58,830 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 19:28:58,831 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 19:28:58,831 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 19:28:58,831 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 19:28:58,832 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 19:28:58,832 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 19:28:58,832 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 19:28:58,833 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 19:28:58,833 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 19:28:58,834 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 19:28:58,834 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 19:28:58,834 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 19:28:58,835 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 19:28:58,835 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 19:28:58,835 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 19:28:58,836 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 19:28:58,836 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 19:28:58,836 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 19:28:58,836 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 19:28:58,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 19:28:58,837 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 19:28:58,837 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 19:28:58,837 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 19:28:58,838 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 19:28:58,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 19:28:58,838 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 19:28:58,838 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 19:28:58,839 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 19:28:58,839 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 19:28:58,839 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d03dd1fa0ccd6c2f276f8e830c5c45c3023586b3294c63b9f2b76eedbdce4e31 [2024-11-18 19:28:59,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 19:28:59,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 19:28:59,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 19:28:59,084 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 19:28:59,084 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 19:28:59,085 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-14.i [2024-11-18 19:29:00,561 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 19:29:00,807 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 19:29:00,808 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-14.i [2024-11-18 19:29:00,822 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/488533c9b/37b7a8b1b3ed48b69fcaab40c901ddf2/FLAG736722073 [2024-11-18 19:29:01,140 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/488533c9b/37b7a8b1b3ed48b69fcaab40c901ddf2 [2024-11-18 19:29:01,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 19:29:01,143 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 19:29:01,144 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 19:29:01,148 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 19:29:01,153 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 19:29:01,153 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:29:01" (1/1) ... [2024-11-18 19:29:01,154 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@473ed030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:29:01, skipping insertion in model container [2024-11-18 19:29:01,155 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:29:01" (1/1) ... [2024-11-18 19:29:01,194 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 19:29:01,353 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_fillercodesize_ps-cn-250_file-14.i[916,929] [2024-11-18 19:29:01,494 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 19:29:01,506 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 19:29:01,515 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_fillercodesize_ps-cn-250_file-14.i[916,929] [2024-11-18 19:29:01,565 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 19:29:01,601 INFO L204 MainTranslator]: Completed translation [2024-11-18 19:29:01,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:29:01 WrapperNode [2024-11-18 19:29:01,601 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 19:29:01,602 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 19:29:01,602 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 19:29:01,602 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 19:29:01,614 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:29:01" (1/1) ... [2024-11-18 19:29:01,675 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:29:01" (1/1) ... [2024-11-18 19:29:01,728 INFO L138 Inliner]: procedures = 26, calls = 111, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 578 [2024-11-18 19:29:01,728 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 19:29:01,729 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 19:29:01,729 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 19:29:01,729 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 19:29:01,738 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:29:01" (1/1) ... [2024-11-18 19:29:01,739 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:29:01" (1/1) ... [2024-11-18 19:29:01,745 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:29:01" (1/1) ... [2024-11-18 19:29:01,783 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 19:29:01,784 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:29:01" (1/1) ... [2024-11-18 19:29:01,784 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:29:01" (1/1) ... [2024-11-18 19:29:01,803 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:29:01" (1/1) ... [2024-11-18 19:29:01,807 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:29:01" (1/1) ... [2024-11-18 19:29:01,818 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:29:01" (1/1) ... [2024-11-18 19:29:01,826 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:29:01" (1/1) ... [2024-11-18 19:29:01,837 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 19:29:01,838 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 19:29:01,838 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 19:29:01,838 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 19:29:01,839 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:29:01" (1/1) ... [2024-11-18 19:29:01,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 19:29:01,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:29:01,873 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 19:29:01,881 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 19:29:01,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 19:29:01,924 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 19:29:01,925 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 19:29:01,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 19:29:01,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 19:29:01,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 19:29:02,030 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 19:29:02,032 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 19:29:02,822 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-18 19:29:02,823 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 19:29:02,843 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 19:29:02,844 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 19:29:02,844 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:29:02 BoogieIcfgContainer [2024-11-18 19:29:02,845 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 19:29:02,846 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 19:29:02,846 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 19:29:02,849 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 19:29:02,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:29:01" (1/3) ... [2024-11-18 19:29:02,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2687e9da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:29:02, skipping insertion in model container [2024-11-18 19:29:02,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:29:01" (2/3) ... [2024-11-18 19:29:02,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2687e9da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:29:02, skipping insertion in model container [2024-11-18 19:29:02,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:29:02" (3/3) ... [2024-11-18 19:29:02,852 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-14.i [2024-11-18 19:29:02,865 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 19:29:02,866 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 19:29:02,929 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 19:29:02,936 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;@4f8f656d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 19:29:02,937 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 19:29:02,946 INFO L276 IsEmpty]: Start isEmpty. Operand has 251 states, 150 states have (on average 1.52) internal successors, (228), 151 states have internal predecessors, (228), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-18 19:29:02,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2024-11-18 19:29:02,971 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:29:02,973 INFO L215 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:02,973 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:29:02,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:29:02,979 INFO L85 PathProgramCache]: Analyzing trace with hash -856857451, now seen corresponding path program 1 times [2024-11-18 19:29:02,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:29:02,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925760811] [2024-11-18 19:29:02,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:29:02,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:29:03,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:29:03,722 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2024-11-18 19:29:03,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:29:03,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925760811] [2024-11-18 19:29:03,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925760811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:29:03,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:29:03,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 19:29:03,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974063154] [2024-11-18 19:29:03,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:29:03,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 19:29:03,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:29:03,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 19:29:03,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 19:29:03,763 INFO L87 Difference]: Start difference. First operand has 251 states, 150 states have (on average 1.52) internal successors, (228), 151 states have internal predecessors, (228), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-18 19:29:03,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:29:03,833 INFO L93 Difference]: Finished difference Result 494 states and 938 transitions. [2024-11-18 19:29:03,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 19:29:03,835 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 590 [2024-11-18 19:29:03,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:29:03,850 INFO L225 Difference]: With dead ends: 494 [2024-11-18 19:29:03,850 INFO L226 Difference]: Without dead ends: 246 [2024-11-18 19:29:03,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 19:29:03,863 INFO L432 NwaCegarLoop]: 411 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, 411 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 19:29:03,864 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:29:03,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-18 19:29:03,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2024-11-18 19:29:03,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 146 states have (on average 1.4726027397260273) internal successors, (215), 146 states have internal predecessors, (215), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-18 19:29:03,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 411 transitions. [2024-11-18 19:29:03,942 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 411 transitions. Word has length 590 [2024-11-18 19:29:03,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:29:03,949 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 411 transitions. [2024-11-18 19:29:03,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-18 19:29:03,949 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 411 transitions. [2024-11-18 19:29:03,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2024-11-18 19:29:03,963 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:29:03,964 INFO L215 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:03,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 19:29:03,964 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:29:03,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:29:03,965 INFO L85 PathProgramCache]: Analyzing trace with hash 627183643, now seen corresponding path program 1 times [2024-11-18 19:29:03,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:29:03,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115069454] [2024-11-18 19:29:03,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:29:03,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:29:04,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:29:04,286 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2024-11-18 19:29:04,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:29:04,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115069454] [2024-11-18 19:29:04,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115069454] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:29:04,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:29:04,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:29:04,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731413157] [2024-11-18 19:29:04,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:29:04,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:29:04,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:29:04,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:29:04,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:29:04,292 INFO L87 Difference]: Start difference. First operand 246 states and 411 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-18 19:29:04,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:29:04,388 INFO L93 Difference]: Finished difference Result 639 states and 1071 transitions. [2024-11-18 19:29:04,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:29:04,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 591 [2024-11-18 19:29:04,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:29:04,398 INFO L225 Difference]: With dead ends: 639 [2024-11-18 19:29:04,398 INFO L226 Difference]: Without dead ends: 396 [2024-11-18 19:29:04,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:29:04,401 INFO L432 NwaCegarLoop]: 528 mSDtfsCounter, 247 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:29:04,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 926 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:29:04,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-11-18 19:29:04,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 393. [2024-11-18 19:29:04,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 245 states have (on average 1.506122448979592) internal successors, (369), 246 states have internal predecessors, (369), 145 states have call successors, (145), 2 states have call predecessors, (145), 2 states have return successors, (145), 144 states have call predecessors, (145), 145 states have call successors, (145) [2024-11-18 19:29:04,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 659 transitions. [2024-11-18 19:29:04,470 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 659 transitions. Word has length 591 [2024-11-18 19:29:04,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:29:04,474 INFO L471 AbstractCegarLoop]: Abstraction has 393 states and 659 transitions. [2024-11-18 19:29:04,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-18 19:29:04,475 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 659 transitions. [2024-11-18 19:29:04,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2024-11-18 19:29:04,483 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:29:04,483 INFO L215 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:04,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 19:29:04,483 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:29:04,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:29:04,484 INFO L85 PathProgramCache]: Analyzing trace with hash -402175655, now seen corresponding path program 1 times [2024-11-18 19:29:04,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:29:04,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225741384] [2024-11-18 19:29:04,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:29:04,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:29:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:29:05,203 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2024-11-18 19:29:05,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:29:05,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225741384] [2024-11-18 19:29:05,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225741384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:29:05,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:29:05,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 19:29:05,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917012439] [2024-11-18 19:29:05,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:29:05,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 19:29:05,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:29:05,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 19:29:05,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:29:05,209 INFO L87 Difference]: Start difference. First operand 393 states and 659 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2024-11-18 19:29:05,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:29:05,925 INFO L93 Difference]: Finished difference Result 1563 states and 2627 transitions. [2024-11-18 19:29:05,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 19:29:05,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) Word has length 591 [2024-11-18 19:29:05,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:29:05,937 INFO L225 Difference]: With dead ends: 1563 [2024-11-18 19:29:05,938 INFO L226 Difference]: Without dead ends: 1173 [2024-11-18 19:29:05,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 19:29:05,942 INFO L432 NwaCegarLoop]: 816 mSDtfsCounter, 571 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 1911 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 19:29:05,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 1911 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 19:29:05,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2024-11-18 19:29:06,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1165. [2024-11-18 19:29:06,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 723 states have (on average 1.5062240663900415) internal successors, (1089), 726 states have internal predecessors, (1089), 435 states have call successors, (435), 6 states have call predecessors, (435), 6 states have return successors, (435), 432 states have call predecessors, (435), 435 states have call successors, (435) [2024-11-18 19:29:06,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1959 transitions. [2024-11-18 19:29:06,072 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1959 transitions. Word has length 591 [2024-11-18 19:29:06,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:29:06,074 INFO L471 AbstractCegarLoop]: Abstraction has 1165 states and 1959 transitions. [2024-11-18 19:29:06,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2024-11-18 19:29:06,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1959 transitions. [2024-11-18 19:29:06,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2024-11-18 19:29:06,079 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:29:06,079 INFO L215 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:06,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 19:29:06,080 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:29:06,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:29:06,081 INFO L85 PathProgramCache]: Analyzing trace with hash 135907780, now seen corresponding path program 1 times [2024-11-18 19:29:06,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:29:06,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454410757] [2024-11-18 19:29:06,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:29:06,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:29:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:29:07,330 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2024-11-18 19:29:07,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:29:07,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454410757] [2024-11-18 19:29:07,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454410757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:29:07,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:29:07,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 19:29:07,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049235790] [2024-11-18 19:29:07,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:29:07,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 19:29:07,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:29:07,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 19:29:07,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:29:07,335 INFO L87 Difference]: Start difference. First operand 1165 states and 1959 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2024-11-18 19:29:08,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:29:08,600 INFO L93 Difference]: Finished difference Result 2335 states and 3927 transitions. [2024-11-18 19:29:08,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 19:29:08,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) Word has length 592 [2024-11-18 19:29:08,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:29:08,611 INFO L225 Difference]: With dead ends: 2335 [2024-11-18 19:29:08,611 INFO L226 Difference]: Without dead ends: 1945 [2024-11-18 19:29:08,613 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 19:29:08,616 INFO L432 NwaCegarLoop]: 1086 mSDtfsCounter, 938 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 19:29:08,617 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 1775 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 19:29:08,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1945 states. [2024-11-18 19:29:08,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1945 to 1939. [2024-11-18 19:29:08,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1939 states, 1203 states have (on average 1.5070656691604323) internal successors, (1813), 1208 states have internal predecessors, (1813), 725 states have call successors, (725), 10 states have call predecessors, (725), 10 states have return successors, (725), 720 states have call predecessors, (725), 725 states have call successors, (725) [2024-11-18 19:29:08,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1939 states to 1939 states and 3263 transitions. [2024-11-18 19:29:08,783 INFO L78 Accepts]: Start accepts. Automaton has 1939 states and 3263 transitions. Word has length 592 [2024-11-18 19:29:08,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:29:08,784 INFO L471 AbstractCegarLoop]: Abstraction has 1939 states and 3263 transitions. [2024-11-18 19:29:08,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2024-11-18 19:29:08,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1939 states and 3263 transitions. [2024-11-18 19:29:08,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2024-11-18 19:29:08,788 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:29:08,789 INFO L215 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:08,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 19:29:08,789 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:29:08,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:29:08,790 INFO L85 PathProgramCache]: Analyzing trace with hash 63521222, now seen corresponding path program 1 times [2024-11-18 19:29:08,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:29:08,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367421115] [2024-11-18 19:29:08,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:29:08,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:29:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:29:09,524 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 12 proven. 279 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2024-11-18 19:29:09,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:29:09,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367421115] [2024-11-18 19:29:09,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367421115] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:29:09,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803569509] [2024-11-18 19:29:09,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:29:09,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:29:09,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:29:09,530 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 19:29:09,533 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 19:29:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:29:09,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 1286 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 19:29:09,850 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:29:11,129 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 1593 proven. 279 refuted. 0 times theorem prover too weak. 17140 trivial. 0 not checked. [2024-11-18 19:29:11,130 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:29:12,020 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 12 proven. 279 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2024-11-18 19:29:12,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803569509] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 19:29:12,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 19:29:12,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-18 19:29:12,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817258922] [2024-11-18 19:29:12,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 19:29:12,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 19:29:12,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:29:12,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 19:29:12,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 19:29:12,026 INFO L87 Difference]: Start difference. First operand 1939 states and 3263 transitions. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 2 states have call successors, (191), 2 states have call predecessors, (191), 4 states have return successors, (192), 2 states have call predecessors, (192), 2 states have call successors, (192) [2024-11-18 19:29:12,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:29:12,703 INFO L93 Difference]: Finished difference Result 3945 states and 6587 transitions. [2024-11-18 19:29:12,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 19:29:12,705 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 2 states have call successors, (191), 2 states have call predecessors, (191), 4 states have return successors, (192), 2 states have call predecessors, (192), 2 states have call successors, (192) Word has length 592 [2024-11-18 19:29:12,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:29:12,719 INFO L225 Difference]: With dead ends: 3945 [2024-11-18 19:29:12,719 INFO L226 Difference]: Without dead ends: 2009 [2024-11-18 19:29:12,728 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1191 GetRequests, 1181 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-11-18 19:29:12,729 INFO L432 NwaCegarLoop]: 317 mSDtfsCounter, 369 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 19:29:12,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 735 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 19:29:12,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2009 states. [2024-11-18 19:29:12,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2009 to 1986. [2024-11-18 19:29:12,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1986 states, 1236 states have (on average 1.4854368932038835) internal successors, (1836), 1242 states have internal predecessors, (1836), 729 states have call successors, (729), 20 states have call predecessors, (729), 20 states have return successors, (729), 723 states have call predecessors, (729), 729 states have call successors, (729) [2024-11-18 19:29:12,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1986 states to 1986 states and 3294 transitions. [2024-11-18 19:29:12,995 INFO L78 Accepts]: Start accepts. Automaton has 1986 states and 3294 transitions. Word has length 592 [2024-11-18 19:29:12,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:29:12,996 INFO L471 AbstractCegarLoop]: Abstraction has 1986 states and 3294 transitions. [2024-11-18 19:29:12,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 2 states have call successors, (191), 2 states have call predecessors, (191), 4 states have return successors, (192), 2 states have call predecessors, (192), 2 states have call successors, (192) [2024-11-18 19:29:12,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1986 states and 3294 transitions. [2024-11-18 19:29:13,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2024-11-18 19:29:13,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:29:13,002 INFO L215 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:13,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 19:29:13,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:29:13,208 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:29:13,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:29:13,209 INFO L85 PathProgramCache]: Analyzing trace with hash -616537148, now seen corresponding path program 1 times [2024-11-18 19:29:13,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:29:13,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631587966] [2024-11-18 19:29:13,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:29:13,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:29:13,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:29:14,359 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 156 proven. 135 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2024-11-18 19:29:14,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:29:14,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631587966] [2024-11-18 19:29:14,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631587966] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:29:14,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344305963] [2024-11-18 19:29:14,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:29:14,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:29:14,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:29:14,365 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 19:29:14,367 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 19:29:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:29:14,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 1284 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 19:29:14,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:29:15,205 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9561 proven. 135 refuted. 0 times theorem prover too weak. 9316 trivial. 0 not checked. [2024-11-18 19:29:15,206 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:29:15,723 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 156 proven. 135 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2024-11-18 19:29:15,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344305963] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 19:29:15,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 19:29:15,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-18 19:29:15,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916805717] [2024-11-18 19:29:15,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 19:29:15,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 19:29:15,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:29:15,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 19:29:15,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-18 19:29:15,727 INFO L87 Difference]: Start difference. First operand 1986 states and 3294 transitions. Second operand has 11 states, 11 states have (on average 12.0) internal successors, (132), 11 states have internal predecessors, (132), 2 states have call successors, (143), 2 states have call predecessors, (143), 4 states have return successors, (144), 2 states have call predecessors, (144), 2 states have call successors, (144) [2024-11-18 19:29:18,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:29:18,934 INFO L93 Difference]: Finished difference Result 5926 states and 9764 transitions. [2024-11-18 19:29:18,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-18 19:29:18,935 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.0) internal successors, (132), 11 states have internal predecessors, (132), 2 states have call successors, (143), 2 states have call predecessors, (143), 4 states have return successors, (144), 2 states have call predecessors, (144), 2 states have call successors, (144) Word has length 592 [2024-11-18 19:29:18,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:29:18,966 INFO L225 Difference]: With dead ends: 5926 [2024-11-18 19:29:18,966 INFO L226 Difference]: Without dead ends: 3950 [2024-11-18 19:29:18,982 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1214 GetRequests, 1181 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=295, Invalid=761, Unknown=0, NotChecked=0, Total=1056 [2024-11-18 19:29:18,986 INFO L432 NwaCegarLoop]: 917 mSDtfsCounter, 1061 mSDsluCounter, 2924 mSDsCounter, 0 mSdLazyCounter, 2910 mSolverCounterSat, 623 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 3841 SdHoareTripleChecker+Invalid, 3533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 623 IncrementalHoareTripleChecker+Valid, 2910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-18 19:29:18,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1115 Valid, 3841 Invalid, 3533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [623 Valid, 2910 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-18 19:29:18,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3950 states. [2024-11-18 19:29:19,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3950 to 3501. [2024-11-18 19:29:19,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3501 states, 2185 states have (on average 1.4718535469107552) internal successors, (3216), 2196 states have internal predecessors, (3216), 1270 states have call successors, (1270), 45 states have call predecessors, (1270), 45 states have return successors, (1270), 1259 states have call predecessors, (1270), 1270 states have call successors, (1270) [2024-11-18 19:29:19,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3501 states to 3501 states and 5756 transitions. [2024-11-18 19:29:19,424 INFO L78 Accepts]: Start accepts. Automaton has 3501 states and 5756 transitions. Word has length 592 [2024-11-18 19:29:19,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:29:19,425 INFO L471 AbstractCegarLoop]: Abstraction has 3501 states and 5756 transitions. [2024-11-18 19:29:19,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.0) internal successors, (132), 11 states have internal predecessors, (132), 2 states have call successors, (143), 2 states have call predecessors, (143), 4 states have return successors, (144), 2 states have call predecessors, (144), 2 states have call successors, (144) [2024-11-18 19:29:19,426 INFO L276 IsEmpty]: Start isEmpty. Operand 3501 states and 5756 transitions. [2024-11-18 19:29:19,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2024-11-18 19:29:19,429 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:29:19,429 INFO L215 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:19,450 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 19:29:19,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-18 19:29:19,631 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:29:19,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:29:19,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1221943631, now seen corresponding path program 1 times [2024-11-18 19:29:19,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:29:19,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336113787] [2024-11-18 19:29:19,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:29:19,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:29:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:29:21,572 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2024-11-18 19:29:21,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:29:21,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336113787] [2024-11-18 19:29:21,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336113787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:29:21,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:29:21,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 19:29:21,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177824987] [2024-11-18 19:29:21,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:29:21,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 19:29:21,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:29:21,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 19:29:21,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-18 19:29:21,574 INFO L87 Difference]: Start difference. First operand 3501 states and 5756 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 2 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2024-11-18 19:29:24,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:29:24,233 INFO L93 Difference]: Finished difference Result 8484 states and 13910 transitions. [2024-11-18 19:29:24,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 19:29:24,234 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 2 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) Word has length 592 [2024-11-18 19:29:24,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:29:24,261 INFO L225 Difference]: With dead ends: 8484 [2024-11-18 19:29:24,262 INFO L226 Difference]: Without dead ends: 4993 [2024-11-18 19:29:24,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-18 19:29:24,274 INFO L432 NwaCegarLoop]: 705 mSDtfsCounter, 794 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 2457 SdHoareTripleChecker+Invalid, 1720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-18 19:29:24,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 2457 Invalid, 1720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-18 19:29:24,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4993 states. [2024-11-18 19:29:24,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4993 to 4885. [2024-11-18 19:29:24,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4885 states, 3029 states have (on average 1.463519313304721) internal successors, (4433), 3044 states have internal predecessors, (4433), 1787 states have call successors, (1787), 68 states have call predecessors, (1787), 68 states have return successors, (1787), 1772 states have call predecessors, (1787), 1787 states have call successors, (1787) [2024-11-18 19:29:24,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4885 states to 4885 states and 8007 transitions. [2024-11-18 19:29:24,855 INFO L78 Accepts]: Start accepts. Automaton has 4885 states and 8007 transitions. Word has length 592 [2024-11-18 19:29:24,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:29:24,857 INFO L471 AbstractCegarLoop]: Abstraction has 4885 states and 8007 transitions. [2024-11-18 19:29:24,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 2 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2024-11-18 19:29:24,858 INFO L276 IsEmpty]: Start isEmpty. Operand 4885 states and 8007 transitions. [2024-11-18 19:29:24,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2024-11-18 19:29:24,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:29:24,862 INFO L215 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:24,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 19:29:24,863 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:29:24,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:29:24,864 INFO L85 PathProgramCache]: Analyzing trace with hash -520343757, now seen corresponding path program 1 times [2024-11-18 19:29:24,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:29:24,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517829812] [2024-11-18 19:29:24,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:29:24,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:29:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:29:25,930 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2024-11-18 19:29:25,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:29:25,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517829812] [2024-11-18 19:29:25,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517829812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:29:25,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:29:25,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 19:29:25,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210619193] [2024-11-18 19:29:25,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:29:25,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 19:29:25,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:29:25,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 19:29:25,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:29:25,937 INFO L87 Difference]: Start difference. First operand 4885 states and 8007 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-18 19:29:27,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:29:27,678 INFO L93 Difference]: Finished difference Result 10928 states and 17913 transitions. [2024-11-18 19:29:27,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 19:29:27,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 592 [2024-11-18 19:29:27,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:29:27,727 INFO L225 Difference]: With dead ends: 10928 [2024-11-18 19:29:27,727 INFO L226 Difference]: Without dead ends: 6122 [2024-11-18 19:29:27,741 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-18 19:29:27,743 INFO L432 NwaCegarLoop]: 980 mSDtfsCounter, 633 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 19:29:27,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 1948 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 19:29:27,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6122 states. [2024-11-18 19:29:28,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6122 to 6102. [2024-11-18 19:29:28,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6102 states, 3788 states have (on average 1.462777191129884) internal successors, (5541), 3808 states have internal predecessors, (5541), 2228 states have call successors, (2228), 85 states have call predecessors, (2228), 85 states have return successors, (2228), 2208 states have call predecessors, (2228), 2228 states have call successors, (2228) [2024-11-18 19:29:28,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6102 states to 6102 states and 9997 transitions. [2024-11-18 19:29:28,731 INFO L78 Accepts]: Start accepts. Automaton has 6102 states and 9997 transitions. Word has length 592 [2024-11-18 19:29:28,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:29:28,733 INFO L471 AbstractCegarLoop]: Abstraction has 6102 states and 9997 transitions. [2024-11-18 19:29:28,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-18 19:29:28,734 INFO L276 IsEmpty]: Start isEmpty. Operand 6102 states and 9997 transitions. [2024-11-18 19:29:28,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2024-11-18 19:29:28,741 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:29:28,741 INFO L215 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:28,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 19:29:28,742 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:29:28,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:29:28,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1616310417, now seen corresponding path program 1 times [2024-11-18 19:29:28,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:29:28,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680120402] [2024-11-18 19:29:28,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:29:28,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:29:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:29:29,187 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 267 proven. 24 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2024-11-18 19:29:29,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:29:29,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680120402] [2024-11-18 19:29:29,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680120402] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:29:29,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401057088] [2024-11-18 19:29:29,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:29:29,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:29:29,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:29:29,192 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 19:29:29,193 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 19:29:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:29:29,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 1278 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 19:29:29,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:29:29,556 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 3123 proven. 24 refuted. 0 times theorem prover too weak. 15865 trivial. 0 not checked. [2024-11-18 19:29:29,558 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:29:29,943 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 267 proven. 24 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2024-11-18 19:29:29,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401057088] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 19:29:29,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 19:29:29,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-18 19:29:29,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753074980] [2024-11-18 19:29:29,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 19:29:29,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 19:29:29,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:29:29,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 19:29:29,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 19:29:29,947 INFO L87 Difference]: Start difference. First operand 6102 states and 9997 transitions. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 2 states have call successors, (106), 2 states have call predecessors, (106), 4 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) [2024-11-18 19:29:30,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:29:30,873 INFO L93 Difference]: Finished difference Result 12281 states and 20012 transitions. [2024-11-18 19:29:30,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 19:29:30,875 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 2 states have call successors, (106), 2 states have call predecessors, (106), 4 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) Word has length 592 [2024-11-18 19:29:30,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:29:30,910 INFO L225 Difference]: With dead ends: 12281 [2024-11-18 19:29:30,911 INFO L226 Difference]: Without dead ends: 6258 [2024-11-18 19:29:30,930 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1191 GetRequests, 1181 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-11-18 19:29:30,931 INFO L432 NwaCegarLoop]: 304 mSDtfsCounter, 260 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 19:29:30,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 716 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 19:29:30,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6258 states. [2024-11-18 19:29:31,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6258 to 6154. [2024-11-18 19:29:31,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6154 states, 3827 states have (on average 1.4413378625555264) internal successors, (5516), 3847 states have internal predecessors, (5516), 2228 states have call successors, (2228), 98 states have call predecessors, (2228), 98 states have return successors, (2228), 2208 states have call predecessors, (2228), 2228 states have call successors, (2228) [2024-11-18 19:29:31,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6154 states to 6154 states and 9972 transitions. [2024-11-18 19:29:31,829 INFO L78 Accepts]: Start accepts. Automaton has 6154 states and 9972 transitions. Word has length 592 [2024-11-18 19:29:31,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:29:31,830 INFO L471 AbstractCegarLoop]: Abstraction has 6154 states and 9972 transitions. [2024-11-18 19:29:31,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 2 states have call successors, (106), 2 states have call predecessors, (106), 4 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) [2024-11-18 19:29:31,831 INFO L276 IsEmpty]: Start isEmpty. Operand 6154 states and 9972 transitions. [2024-11-18 19:29:31,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2024-11-18 19:29:31,837 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:29:31,838 INFO L215 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:31,858 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 19:29:32,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:29:32,042 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:29:32,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:29:32,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1398793201, now seen corresponding path program 1 times [2024-11-18 19:29:32,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:29:32,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179377063] [2024-11-18 19:29:32,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:29:32,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:29:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:29:32,898 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 201 proven. 90 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2024-11-18 19:29:32,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:29:32,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179377063] [2024-11-18 19:29:32,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179377063] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:29:32,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132252036] [2024-11-18 19:29:32,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:29:32,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:29:32,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:29:32,908 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 19:29:32,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 19:29:33,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:29:33,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 1279 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-18 19:29:33,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:29:35,436 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 11633 proven. 309 refuted. 0 times theorem prover too weak. 7070 trivial. 0 not checked. [2024-11-18 19:29:35,437 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:29:36,151 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 201 proven. 90 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2024-11-18 19:29:36,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132252036] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 19:29:36,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 19:29:36,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 7] total 21 [2024-11-18 19:29:36,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748489878] [2024-11-18 19:29:36,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 19:29:36,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-18 19:29:36,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:29:36,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-18 19:29:36,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2024-11-18 19:29:36,159 INFO L87 Difference]: Start difference. First operand 6154 states and 9972 transitions. Second operand has 21 states, 21 states have (on average 10.095238095238095) internal successors, (212), 20 states have internal predecessors, (212), 6 states have call successors, (175), 4 states have call predecessors, (175), 7 states have return successors, (177), 6 states have call predecessors, (177), 6 states have call successors, (177) [2024-11-18 19:29:43,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:29:43,267 INFO L93 Difference]: Finished difference Result 36401 states and 57782 transitions. [2024-11-18 19:29:43,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-18 19:29:43,269 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 10.095238095238095) internal successors, (212), 20 states have internal predecessors, (212), 6 states have call successors, (175), 4 states have call predecessors, (175), 7 states have return successors, (177), 6 states have call predecessors, (177), 6 states have call successors, (177) Word has length 592 [2024-11-18 19:29:43,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:29:43,445 INFO L225 Difference]: With dead ends: 36401 [2024-11-18 19:29:43,446 INFO L226 Difference]: Without dead ends: 30326 [2024-11-18 19:29:43,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1263 GetRequests, 1176 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2846 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1692, Invalid=6140, Unknown=0, NotChecked=0, Total=7832 [2024-11-18 19:29:43,487 INFO L432 NwaCegarLoop]: 504 mSDtfsCounter, 2141 mSDsluCounter, 1971 mSDsCounter, 0 mSdLazyCounter, 2754 mSolverCounterSat, 1415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2243 SdHoareTripleChecker+Valid, 2475 SdHoareTripleChecker+Invalid, 4169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1415 IncrementalHoareTripleChecker+Valid, 2754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-18 19:29:43,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2243 Valid, 2475 Invalid, 4169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1415 Valid, 2754 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-18 19:29:43,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30326 states. [2024-11-18 19:29:46,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30326 to 25989. [2024-11-18 19:29:46,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25989 states, 16704 states have (on average 1.4437859195402298) internal successors, (24117), 16806 states have internal predecessors, (24117), 8710 states have call successors, (8710), 574 states have call predecessors, (8710), 574 states have return successors, (8710), 8608 states have call predecessors, (8710), 8710 states have call successors, (8710) [2024-11-18 19:29:46,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25989 states to 25989 states and 41537 transitions. [2024-11-18 19:29:46,605 INFO L78 Accepts]: Start accepts. Automaton has 25989 states and 41537 transitions. Word has length 592 [2024-11-18 19:29:46,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:29:46,606 INFO L471 AbstractCegarLoop]: Abstraction has 25989 states and 41537 transitions. [2024-11-18 19:29:46,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.095238095238095) internal successors, (212), 20 states have internal predecessors, (212), 6 states have call successors, (175), 4 states have call predecessors, (175), 7 states have return successors, (177), 6 states have call predecessors, (177), 6 states have call successors, (177) [2024-11-18 19:29:46,606 INFO L276 IsEmpty]: Start isEmpty. Operand 25989 states and 41537 transitions. [2024-11-18 19:29:46,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2024-11-18 19:29:46,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:29:46,618 INFO L215 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:46,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 19:29:46,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:29:46,823 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:29:46,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:29:46,823 INFO L85 PathProgramCache]: Analyzing trace with hash -79492826, now seen corresponding path program 1 times [2024-11-18 19:29:46,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:29:46,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943626499] [2024-11-18 19:29:46,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:29:46,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:29:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 19:29:47,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1100416848] [2024-11-18 19:29:47,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:29:47,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:29:47,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:29:47,080 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 19:29:47,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 19:29:47,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:29:47,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 19:29:47,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:29:48,791 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 6297 proven. 231 refuted. 0 times theorem prover too weak. 12484 trivial. 0 not checked. [2024-11-18 19:29:48,792 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:29:49,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:29:49,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943626499] [2024-11-18 19:29:49,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 19:29:49,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100416848] [2024-11-18 19:29:49,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100416848] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:29:49,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-18 19:29:49,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2024-11-18 19:29:49,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355862838] [2024-11-18 19:29:49,543 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-18 19:29:49,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 19:29:49,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:29:49,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 19:29:49,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-18 19:29:49,545 INFO L87 Difference]: Start difference. First operand 25989 states and 41537 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 6 states have internal predecessors, (112), 2 states have call successors, (98), 2 states have call predecessors, (98), 3 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2024-11-18 19:29:55,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:29:55,779 INFO L93 Difference]: Finished difference Result 79817 states and 126088 transitions. [2024-11-18 19:29:55,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 19:29:55,784 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 6 states have internal predecessors, (112), 2 states have call successors, (98), 2 states have call predecessors, (98), 3 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) Word has length 593 [2024-11-18 19:29:55,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:29:56,039 INFO L225 Difference]: With dead ends: 79817 [2024-11-18 19:29:56,040 INFO L226 Difference]: Without dead ends: 53907 [2024-11-18 19:29:56,119 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 634 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2024-11-18 19:29:56,120 INFO L432 NwaCegarLoop]: 328 mSDtfsCounter, 300 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 19:29:56,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 1325 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 19:29:56,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53907 states. [2024-11-18 19:30:04,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53907 to 52881. [2024-11-18 19:30:04,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52881 states, 34079 states have (on average 1.4268317732327827) internal successors, (48625), 34282 states have internal predecessors, (48625), 17373 states have call successors, (17373), 1428 states have call predecessors, (17373), 1428 states have return successors, (17373), 17170 states have call predecessors, (17373), 17373 states have call successors, (17373) [2024-11-18 19:30:04,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52881 states to 52881 states and 83371 transitions. [2024-11-18 19:30:04,843 INFO L78 Accepts]: Start accepts. Automaton has 52881 states and 83371 transitions. Word has length 593 [2024-11-18 19:30:04,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:30:04,844 INFO L471 AbstractCegarLoop]: Abstraction has 52881 states and 83371 transitions. [2024-11-18 19:30:04,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 6 states have internal predecessors, (112), 2 states have call successors, (98), 2 states have call predecessors, (98), 3 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2024-11-18 19:30:04,845 INFO L276 IsEmpty]: Start isEmpty. Operand 52881 states and 83371 transitions. [2024-11-18 19:30:04,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2024-11-18 19:30:04,860 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:30:04,860 INFO L215 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:30:04,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 19:30:05,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-18 19:30:05,066 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:30:05,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:30:05,066 INFO L85 PathProgramCache]: Analyzing trace with hash -888839452, now seen corresponding path program 1 times [2024-11-18 19:30:05,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:30:05,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19076332] [2024-11-18 19:30:05,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:30:05,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:30:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 19:30:05,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [477642158] [2024-11-18 19:30:05,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:30:05,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:30:05,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:30:05,379 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 19:30:05,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 19:30:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:30:05,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 1279 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-18 19:30:05,677 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:30:07,745 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 5571 proven. 240 refuted. 0 times theorem prover too weak. 13201 trivial. 0 not checked. [2024-11-18 19:30:07,746 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:30:08,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:30:08,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19076332] [2024-11-18 19:30:08,751 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 19:30:08,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477642158] [2024-11-18 19:30:08,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477642158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:30:08,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-18 19:30:08,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2024-11-18 19:30:08,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886518217] [2024-11-18 19:30:08,751 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-18 19:30:08,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 19:30:08,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:30:08,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 19:30:08,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=95, Unknown=2, NotChecked=0, Total=132 [2024-11-18 19:30:08,753 INFO L87 Difference]: Start difference. First operand 52881 states and 83371 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 2 states have call successors, (98), 2 states have call predecessors, (98), 3 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98)