./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-32.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_variablewrapping_wrapper-s_file-32.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 a3ace122b1e1ec58f75c9939f157863ad20805c3ed845fddb96d7761951d3563 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:05:50,613 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:05:50,683 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:05:50,690 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:05:50,692 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:05:50,725 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:05:50,725 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:05:50,726 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:05:50,727 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:05:50,728 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:05:50,728 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:05:50,729 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:05:50,729 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:05:50,731 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:05:50,731 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:05:50,731 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:05:50,732 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:05:50,732 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:05:50,732 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:05:50,733 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:05:50,733 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:05:50,737 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:05:50,738 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:05:50,738 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:05:50,738 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:05:50,738 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:05:50,738 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:05:50,739 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:05:50,739 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:05:50,739 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:05:50,739 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:05:50,740 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:05:50,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:05:50,741 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:05:50,741 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:05:50,741 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:05:50,742 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:05:50,742 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:05:50,743 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:05:50,743 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:05:50,743 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:05:50,744 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:05:50,745 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3ace122b1e1ec58f75c9939f157863ad20805c3ed845fddb96d7761951d3563 [2024-11-19 01:05:51,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:05:51,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:05:51,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:05:51,055 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:05:51,056 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:05:51,057 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-32.i [2024-11-19 01:05:52,512 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:05:52,703 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:05:52,703 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-32.i [2024-11-19 01:05:52,714 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4539fa52c/c4e15b02c4ea43f2bcd1da9ed209f131/FLAGc84fe9d10 [2024-11-19 01:05:52,729 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4539fa52c/c4e15b02c4ea43f2bcd1da9ed209f131 [2024-11-19 01:05:52,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:05:52,733 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:05:52,738 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:05:52,738 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:05:52,744 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:05:52,745 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:05:52" (1/1) ... [2024-11-19 01:05:52,745 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@955aa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:05:52, skipping insertion in model container [2024-11-19 01:05:52,746 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:05:52" (1/1) ... [2024-11-19 01:05:52,775 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:05:52,943 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_variablewrapping_wrapper-s_file-32.i[916,929] [2024-11-19 01:05:52,997 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:05:53,006 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:05:53,016 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_variablewrapping_wrapper-s_file-32.i[916,929] [2024-11-19 01:05:53,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:05:53,146 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:05:53,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:05:53 WrapperNode [2024-11-19 01:05:53,147 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:05:53,148 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:05:53,149 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:05:53,149 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:05:53,156 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:05:53" (1/1) ... [2024-11-19 01:05:53,174 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:05:53" (1/1) ... [2024-11-19 01:05:53,234 INFO L138 Inliner]: procedures = 27, calls = 154, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 433 [2024-11-19 01:05:53,235 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:05:53,236 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:05:53,236 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:05:53,236 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:05:53,254 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:05:53" (1/1) ... [2024-11-19 01:05:53,254 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:05:53" (1/1) ... [2024-11-19 01:05:53,259 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:05:53" (1/1) ... [2024-11-19 01:05:53,288 INFO L175 MemorySlicer]: Split 125 memory accesses to 2 slices as follows [2, 123]. 98 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 28 writes are split as follows [0, 28]. [2024-11-19 01:05:53,289 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:05:53" (1/1) ... [2024-11-19 01:05:53,289 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:05:53" (1/1) ... [2024-11-19 01:05:53,321 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:05:53" (1/1) ... [2024-11-19 01:05:53,325 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:05:53" (1/1) ... [2024-11-19 01:05:53,330 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:05:53" (1/1) ... [2024-11-19 01:05:53,337 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:05:53" (1/1) ... [2024-11-19 01:05:53,345 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:05:53,346 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:05:53,346 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:05:53,346 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:05:53,348 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:05:53" (1/1) ... [2024-11-19 01:05:53,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:05:53,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:05:53,383 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) [2024-11-19 01:05:53,390 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 [2024-11-19 01:05:53,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:05:53,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-19 01:05:53,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-19 01:05:53,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 01:05:53,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 01:05:53,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 01:05:53,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 01:05:53,440 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-19 01:05:53,440 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-19 01:05:53,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:05:53,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 01:05:53,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:05:53,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:05:53,574 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:05:53,576 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:05:54,035 INFO L? ?]: Removed 107 outVars from TransFormulas that were not future-live. [2024-11-19 01:05:54,035 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:05:54,050 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:05:54,051 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 01:05:54,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:05:54 BoogieIcfgContainer [2024-11-19 01:05:54,051 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:05:54,053 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:05:54,053 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:05:54,058 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:05:54,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:05:52" (1/3) ... [2024-11-19 01:05:54,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40f7bbc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:05:54, skipping insertion in model container [2024-11-19 01:05:54,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:05:53" (2/3) ... [2024-11-19 01:05:54,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40f7bbc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:05:54, skipping insertion in model container [2024-11-19 01:05:54,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:05:54" (3/3) ... [2024-11-19 01:05:54,060 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-32.i [2024-11-19 01:05:54,075 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:05:54,075 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:05:54,131 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:05:54,138 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;@3c73ab99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:05:54,138 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 01:05:54,142 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 78 states have (on average 1.3717948717948718) internal successors, (107), 79 states have internal predecessors, (107), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-19 01:05:54,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 01:05:54,156 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:05:54,157 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:05:54,158 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:05:54,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:05:54,166 INFO L85 PathProgramCache]: Analyzing trace with hash 331903658, now seen corresponding path program 1 times [2024-11-19 01:05:54,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:05:54,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612811045] [2024-11-19 01:05:54,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:05:54,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:05:54,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:05:54,553 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2024-11-19 01:05:54,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:05:54,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612811045] [2024-11-19 01:05:54,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612811045] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:05:54,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959175948] [2024-11-19 01:05:54,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:05:54,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:05:54,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:05:54,559 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) [2024-11-19 01:05:54,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 01:05:54,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:05:54,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-19 01:05:54,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:05:54,843 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2024-11-19 01:05:54,844 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:05:54,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959175948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:05:54,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:05:54,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-19 01:05:54,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871233782] [2024-11-19 01:05:54,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:05:54,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 01:05:54,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:05:54,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 01:05:54,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 01:05:54,886 INFO L87 Difference]: Start difference. First operand has 99 states, 78 states have (on average 1.3717948717948718) internal successors, (107), 79 states have internal predecessors, (107), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-19 01:05:54,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:05:54,950 INFO L93 Difference]: Finished difference Result 191 states and 298 transitions. [2024-11-19 01:05:54,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 01:05:54,952 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 129 [2024-11-19 01:05:54,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:05:54,963 INFO L225 Difference]: With dead ends: 191 [2024-11-19 01:05:54,963 INFO L226 Difference]: Without dead ends: 95 [2024-11-19 01:05:54,967 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 01:05:54,973 INFO L432 NwaCegarLoop]: 132 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, 132 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 [2024-11-19 01:05:54,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 01:05:54,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-19 01:05:55,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-11-19 01:05:55,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 75 states have (on average 1.28) internal successors, (96), 75 states have internal predecessors, (96), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-19 01:05:55,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 132 transitions. [2024-11-19 01:05:55,035 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 132 transitions. Word has length 129 [2024-11-19 01:05:55,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:05:55,037 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 132 transitions. [2024-11-19 01:05:55,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-19 01:05:55,037 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 132 transitions. [2024-11-19 01:05:55,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 01:05:55,044 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:05:55,044 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:05:55,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 01:05:55,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-19 01:05:55,246 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:05:55,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:05:55,247 INFO L85 PathProgramCache]: Analyzing trace with hash -718817914, now seen corresponding path program 1 times [2024-11-19 01:05:55,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:05:55,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607441502] [2024-11-19 01:05:55,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:05:55,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:05:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:05:55,917 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 01:05:55,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:05:55,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607441502] [2024-11-19 01:05:55,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607441502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:05:55,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:05:55,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:05:55,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695236316] [2024-11-19 01:05:55,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:05:55,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:05:55,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:05:55,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:05:55,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:05:55,924 INFO L87 Difference]: Start difference. First operand 95 states and 132 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 01:05:56,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:05:56,281 INFO L93 Difference]: Finished difference Result 318 states and 444 transitions. [2024-11-19 01:05:56,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:05:56,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 129 [2024-11-19 01:05:56,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:05:56,285 INFO L225 Difference]: With dead ends: 318 [2024-11-19 01:05:56,287 INFO L226 Difference]: Without dead ends: 226 [2024-11-19 01:05:56,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:05:56,290 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 200 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 01:05:56,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 271 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 01:05:56,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-11-19 01:05:56,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 193. [2024-11-19 01:05:56,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 154 states have (on average 1.2857142857142858) internal successors, (198), 154 states have internal predecessors, (198), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-19 01:05:56,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 270 transitions. [2024-11-19 01:05:56,334 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 270 transitions. Word has length 129 [2024-11-19 01:05:56,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:05:56,335 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 270 transitions. [2024-11-19 01:05:56,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 01:05:56,336 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 270 transitions. [2024-11-19 01:05:56,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-19 01:05:56,341 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:05:56,341 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:05:56,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:05:56,342 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:05:56,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:05:56,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1156097248, now seen corresponding path program 1 times [2024-11-19 01:05:56,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:05:56,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704123386] [2024-11-19 01:05:56,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:05:56,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:05:56,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:05:58,405 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 01:05:58,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:05:58,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704123386] [2024-11-19 01:05:58,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704123386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:05:58,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:05:58,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 01:05:58,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348979632] [2024-11-19 01:05:58,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:05:58,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:05:58,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:05:58,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:05:58,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:05:58,408 INFO L87 Difference]: Start difference. First operand 193 states and 270 transitions. Second operand has 11 states, 10 states have (on average 5.0) internal successors, (50), 11 states have internal predecessors, (50), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-19 01:05:59,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:05:59,072 INFO L93 Difference]: Finished difference Result 511 states and 714 transitions. [2024-11-19 01:05:59,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 01:05:59,073 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.0) internal successors, (50), 11 states have internal predecessors, (50), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 137 [2024-11-19 01:05:59,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:05:59,078 INFO L225 Difference]: With dead ends: 511 [2024-11-19 01:05:59,079 INFO L226 Difference]: Without dead ends: 321 [2024-11-19 01:05:59,081 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-11-19 01:05:59,083 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 74 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 01:05:59,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 869 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 01:05:59,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-11-19 01:05:59,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 317. [2024-11-19 01:05:59,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 268 states have (on average 1.3171641791044777) internal successors, (353), 270 states have internal predecessors, (353), 44 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-19 01:05:59,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 441 transitions. [2024-11-19 01:05:59,128 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 441 transitions. Word has length 137 [2024-11-19 01:05:59,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:05:59,128 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 441 transitions. [2024-11-19 01:05:59,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.0) internal successors, (50), 11 states have internal predecessors, (50), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-19 01:05:59,129 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 441 transitions. [2024-11-19 01:05:59,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-19 01:05:59,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:05:59,134 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:05:59,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:05:59,134 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:05:59,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:05:59,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1038102055, now seen corresponding path program 1 times [2024-11-19 01:05:59,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:05:59,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631563042] [2024-11-19 01:05:59,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:05:59,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:05:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:06:01,667 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 01:06:01,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:06:01,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631563042] [2024-11-19 01:06:01,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631563042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:06:01,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:06:01,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-19 01:06:01,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488643667] [2024-11-19 01:06:01,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:06:01,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 01:06:01,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:06:01,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 01:06:01,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:06:01,674 INFO L87 Difference]: Start difference. First operand 317 states and 441 transitions. Second operand has 12 states, 9 states have (on average 5.777777777777778) internal successors, (52), 12 states have internal predecessors, (52), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-19 01:06:02,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:06:02,804 INFO L93 Difference]: Finished difference Result 683 states and 951 transitions. [2024-11-19 01:06:02,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 01:06:02,805 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 5.777777777777778) internal successors, (52), 12 states have internal predecessors, (52), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) Word has length 139 [2024-11-19 01:06:02,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:06:02,811 INFO L225 Difference]: With dead ends: 683 [2024-11-19 01:06:02,811 INFO L226 Difference]: Without dead ends: 369 [2024-11-19 01:06:02,813 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2024-11-19 01:06:02,814 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 64 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 01:06:02,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 1085 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 01:06:02,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2024-11-19 01:06:02,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 332. [2024-11-19 01:06:02,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 283 states have (on average 1.325088339222615) internal successors, (375), 285 states have internal predecessors, (375), 44 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-19 01:06:02,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 463 transitions. [2024-11-19 01:06:02,851 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 463 transitions. Word has length 139 [2024-11-19 01:06:02,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:06:02,852 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 463 transitions. [2024-11-19 01:06:02,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 5.777777777777778) internal successors, (52), 12 states have internal predecessors, (52), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-19 01:06:02,854 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 463 transitions. [2024-11-19 01:06:02,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-19 01:06:02,856 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:06:02,857 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:06:02,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 01:06:02,858 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:06:02,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:06:02,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1341832277, now seen corresponding path program 1 times [2024-11-19 01:06:02,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:06:02,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219449361] [2024-11-19 01:06:02,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:06:02,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:06:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:06:03,055 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2024-11-19 01:06:03,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:06:03,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219449361] [2024-11-19 01:06:03,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219449361] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:06:03,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788376201] [2024-11-19 01:06:03,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:06:03,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:06:03,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:06:03,059 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) [2024-11-19 01:06:03,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 01:06:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:06:03,245 INFO L255 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 01:06:03,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:06:03,292 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 01:06:03,294 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:06:03,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788376201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:06:03,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:06:03,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2024-11-19 01:06:03,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191645426] [2024-11-19 01:06:03,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:06:03,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:06:03,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:06:03,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:06:03,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:06:03,297 INFO L87 Difference]: Start difference. First operand 332 states and 463 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 01:06:03,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:06:03,343 INFO L93 Difference]: Finished difference Result 673 states and 939 transitions. [2024-11-19 01:06:03,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:06:03,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 139 [2024-11-19 01:06:03,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:06:03,347 INFO L225 Difference]: With dead ends: 673 [2024-11-19 01:06:03,347 INFO L226 Difference]: Without dead ends: 344 [2024-11-19 01:06:03,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:06:03,349 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 0 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 01:06:03,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 500 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 01:06:03,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-11-19 01:06:03,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2024-11-19 01:06:03,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 295 states have (on average 1.311864406779661) internal successors, (387), 297 states have internal predecessors, (387), 44 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-19 01:06:03,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 475 transitions. [2024-11-19 01:06:03,375 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 475 transitions. Word has length 139 [2024-11-19 01:06:03,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:06:03,377 INFO L471 AbstractCegarLoop]: Abstraction has 344 states and 475 transitions. [2024-11-19 01:06:03,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 01:06:03,378 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 475 transitions. [2024-11-19 01:06:03,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-19 01:06:03,379 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:06:03,379 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:06:03,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 01:06:03,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:06:03,581 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:06:03,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:06:03,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1179497433, now seen corresponding path program 1 times [2024-11-19 01:06:03,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:06:03,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480195348] [2024-11-19 01:06:03,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:06:03,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:06:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:06:06,432 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 01:06:06,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:06:06,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480195348] [2024-11-19 01:06:06,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480195348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:06:06,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:06:06,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-19 01:06:06,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91716984] [2024-11-19 01:06:06,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:06:06,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 01:06:06,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:06:06,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 01:06:06,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2024-11-19 01:06:06,435 INFO L87 Difference]: Start difference. First operand 344 states and 475 transitions. Second operand has 16 states, 13 states have (on average 4.0) internal successors, (52), 16 states have internal predecessors, (52), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-19 01:06:08,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:06:08,433 INFO L93 Difference]: Finished difference Result 769 states and 1058 transitions. [2024-11-19 01:06:08,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 01:06:08,433 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 4.0) internal successors, (52), 16 states have internal predecessors, (52), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) Word has length 139 [2024-11-19 01:06:08,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:06:08,438 INFO L225 Difference]: With dead ends: 769 [2024-11-19 01:06:08,438 INFO L226 Difference]: Without dead ends: 428 [2024-11-19 01:06:08,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2024-11-19 01:06:08,440 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 194 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-19 01:06:08,441 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 1051 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-19 01:06:08,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2024-11-19 01:06:08,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 366. [2024-11-19 01:06:08,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 317 states have (on average 1.3186119873817035) internal successors, (418), 319 states have internal predecessors, (418), 44 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-19 01:06:08,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 506 transitions. [2024-11-19 01:06:08,466 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 506 transitions. Word has length 139 [2024-11-19 01:06:08,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:06:08,467 INFO L471 AbstractCegarLoop]: Abstraction has 366 states and 506 transitions. [2024-11-19 01:06:08,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 4.0) internal successors, (52), 16 states have internal predecessors, (52), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-19 01:06:08,467 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 506 transitions. [2024-11-19 01:06:08,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-19 01:06:08,468 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:06:08,469 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:06:08,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 01:06:08,469 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:06:08,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:06:08,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1871530343, now seen corresponding path program 1 times [2024-11-19 01:06:08,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:06:08,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645961171] [2024-11-19 01:06:08,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:06:08,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:06:08,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:06:10,554 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 01:06:10,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:06:10,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645961171] [2024-11-19 01:06:10,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645961171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:06:10,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:06:10,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-19 01:06:10,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523393857] [2024-11-19 01:06:10,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:06:10,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 01:06:10,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:06:10,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 01:06:10,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:06:10,557 INFO L87 Difference]: Start difference. First operand 366 states and 506 transitions. Second operand has 12 states, 9 states have (on average 5.888888888888889) internal successors, (53), 12 states have internal predecessors, (53), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-19 01:06:11,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:06:11,245 INFO L93 Difference]: Finished difference Result 723 states and 1000 transitions. [2024-11-19 01:06:11,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 01:06:11,246 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 5.888888888888889) internal successors, (53), 12 states have internal predecessors, (53), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) Word has length 140 [2024-11-19 01:06:11,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:06:11,250 INFO L225 Difference]: With dead ends: 723 [2024-11-19 01:06:11,250 INFO L226 Difference]: Without dead ends: 360 [2024-11-19 01:06:11,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-11-19 01:06:11,252 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 54 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 01:06:11,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 857 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 01:06:11,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-11-19 01:06:11,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 334. [2024-11-19 01:06:11,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 285 states have (on average 1.3087719298245615) internal successors, (373), 287 states have internal predecessors, (373), 44 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-19 01:06:11,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 461 transitions. [2024-11-19 01:06:11,276 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 461 transitions. Word has length 140 [2024-11-19 01:06:11,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:06:11,277 INFO L471 AbstractCegarLoop]: Abstraction has 334 states and 461 transitions. [2024-11-19 01:06:11,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 5.888888888888889) internal successors, (53), 12 states have internal predecessors, (53), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-19 01:06:11,277 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 461 transitions. [2024-11-19 01:06:11,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-19 01:06:11,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:06:11,280 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:06:11,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 01:06:11,280 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:06:11,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:06:11,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1382909586, now seen corresponding path program 1 times [2024-11-19 01:06:11,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:06:11,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027577797] [2024-11-19 01:06:11,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:06:11,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:06:11,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:06:12,815 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 01:06:12,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:06:12,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027577797] [2024-11-19 01:06:12,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027577797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:06:12,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:06:12,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-19 01:06:12,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477569733] [2024-11-19 01:06:12,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:06:12,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 01:06:12,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:06:12,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 01:06:12,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2024-11-19 01:06:12,818 INFO L87 Difference]: Start difference. First operand 334 states and 461 transitions. Second operand has 15 states, 13 states have (on average 4.153846153846154) internal successors, (54), 15 states have internal predecessors, (54), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-19 01:06:13,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:06:13,683 INFO L93 Difference]: Finished difference Result 701 states and 964 transitions. [2024-11-19 01:06:13,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 01:06:13,684 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.153846153846154) internal successors, (54), 15 states have internal predecessors, (54), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) Word has length 141 [2024-11-19 01:06:13,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:06:13,687 INFO L225 Difference]: With dead ends: 701 [2024-11-19 01:06:13,687 INFO L226 Difference]: Without dead ends: 370 [2024-11-19 01:06:13,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2024-11-19 01:06:13,689 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 52 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 01:06:13,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 1475 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 01:06:13,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2024-11-19 01:06:13,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 337. [2024-11-19 01:06:13,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 288 states have (on average 1.3020833333333333) internal successors, (375), 290 states have internal predecessors, (375), 44 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-19 01:06:13,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 463 transitions. [2024-11-19 01:06:13,711 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 463 transitions. Word has length 141 [2024-11-19 01:06:13,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:06:13,712 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 463 transitions. [2024-11-19 01:06:13,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.153846153846154) internal successors, (54), 15 states have internal predecessors, (54), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-19 01:06:13,712 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 463 transitions. [2024-11-19 01:06:13,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-19 01:06:13,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:06:13,715 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:06:13,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 01:06:13,715 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:06:13,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:06:13,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1360707120, now seen corresponding path program 1 times [2024-11-19 01:06:13,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:06:13,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076900712] [2024-11-19 01:06:13,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:06:13,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:06:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:06:15,841 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 01:06:15,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:06:15,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076900712] [2024-11-19 01:06:15,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076900712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:06:15,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:06:15,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-19 01:06:15,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596756318] [2024-11-19 01:06:15,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:06:15,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 01:06:15,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:06:15,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 01:06:15,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-11-19 01:06:15,845 INFO L87 Difference]: Start difference. First operand 337 states and 463 transitions. Second operand has 14 states, 10 states have (on average 5.4) internal successors, (54), 14 states have internal predecessors, (54), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-19 01:06:16,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:06:16,937 INFO L93 Difference]: Finished difference Result 962 states and 1311 transitions. [2024-11-19 01:06:16,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-19 01:06:16,937 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 5.4) internal successors, (54), 14 states have internal predecessors, (54), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) Word has length 141 [2024-11-19 01:06:16,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:06:16,941 INFO L225 Difference]: With dead ends: 962 [2024-11-19 01:06:16,941 INFO L226 Difference]: Without dead ends: 628 [2024-11-19 01:06:16,943 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2024-11-19 01:06:16,943 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 163 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 01:06:16,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 594 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 01:06:16,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2024-11-19 01:06:16,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 605. [2024-11-19 01:06:16,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 502 states have (on average 1.2768924302788844) internal successors, (641), 507 states have internal predecessors, (641), 92 states have call successors, (92), 10 states have call predecessors, (92), 10 states have return successors, (92), 87 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-19 01:06:16,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 825 transitions. [2024-11-19 01:06:16,988 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 825 transitions. Word has length 141 [2024-11-19 01:06:16,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:06:16,989 INFO L471 AbstractCegarLoop]: Abstraction has 605 states and 825 transitions. [2024-11-19 01:06:16,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 5.4) internal successors, (54), 14 states have internal predecessors, (54), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-19 01:06:16,990 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 825 transitions. [2024-11-19 01:06:16,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-19 01:06:16,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:06:16,991 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:06:16,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 01:06:16,992 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:06:16,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:06:16,992 INFO L85 PathProgramCache]: Analyzing trace with hash -2043398769, now seen corresponding path program 1 times [2024-11-19 01:06:16,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:06:16,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851967929] [2024-11-19 01:06:16,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:06:16,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:06:17,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat