./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label36.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d 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/eca-rers2012/Problem03_label36.c -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 62e9241ba979767c8bca2756b2edfc882f7b20aa81fc6f783856c8cd54d80552 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 03:09:22,092 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 03:09:22,172 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 03:09:22,174 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 03:09:22,174 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 03:09:22,197 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 03:09:22,198 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 03:09:22,198 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 03:09:22,198 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 03:09:22,199 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 03:09:22,199 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 03:09:22,199 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 03:09:22,199 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 03:09:22,200 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 03:09:22,200 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 03:09:22,201 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 03:09:22,202 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 03:09:22,203 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 03:09:22,204 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 03:09:22,204 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 03:09:22,204 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 03:09:22,204 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 03:09:22,204 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 03:09:22,204 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 03:09:22,205 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 03:09:22,205 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 03:09:22,205 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 03:09:22,205 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 03:09:22,205 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 03:09:22,205 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 03:09:22,206 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 03:09:22,206 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 03:09:22,206 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 03:09:22,206 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 03:09:22,206 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 03:09:22,206 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 03:09:22,206 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 03:09:22,207 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 03:09:22,207 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 03:09:22,207 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 03:09:22,209 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 03:09:22,209 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 03:09:22,209 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62e9241ba979767c8bca2756b2edfc882f7b20aa81fc6f783856c8cd54d80552 [2024-11-16 03:09:22,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 03:09:22,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 03:09:22,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 03:09:22,416 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 03:09:22,417 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 03:09:22,418 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label36.c [2024-11-16 03:09:23,821 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 03:09:24,066 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 03:09:24,068 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label36.c [2024-11-16 03:09:24,082 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96e40a303/d3a3e786d4bd4945a470b055808cfa51/FLAG893a4ef3d [2024-11-16 03:09:24,379 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96e40a303/d3a3e786d4bd4945a470b055808cfa51 [2024-11-16 03:09:24,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 03:09:24,382 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 03:09:24,383 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 03:09:24,383 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 03:09:24,386 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 03:09:24,387 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:09:24" (1/1) ... [2024-11-16 03:09:24,388 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f8c3966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:09:24, skipping insertion in model container [2024-11-16 03:09:24,388 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:09:24" (1/1) ... [2024-11-16 03:09:24,430 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 03:09:24,864 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/eca-rers2012/Problem03_label36.c[58393,58406] [2024-11-16 03:09:24,897 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 03:09:24,908 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 03:09:25,041 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/eca-rers2012/Problem03_label36.c[58393,58406] [2024-11-16 03:09:25,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 03:09:25,067 INFO L204 MainTranslator]: Completed translation [2024-11-16 03:09:25,067 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:09:25 WrapperNode [2024-11-16 03:09:25,067 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 03:09:25,068 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 03:09:25,068 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 03:09:25,068 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 03:09:25,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:09:25" (1/1) ... [2024-11-16 03:09:25,096 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:09:25" (1/1) ... [2024-11-16 03:09:25,181 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2024-11-16 03:09:25,182 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 03:09:25,182 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 03:09:25,183 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 03:09:25,183 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 03:09:25,194 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:09:25" (1/1) ... [2024-11-16 03:09:25,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:09:25" (1/1) ... [2024-11-16 03:09:25,207 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:09:25" (1/1) ... [2024-11-16 03:09:25,265 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 03:09:25,265 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:09:25" (1/1) ... [2024-11-16 03:09:25,265 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:09:25" (1/1) ... [2024-11-16 03:09:25,312 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:09:25" (1/1) ... [2024-11-16 03:09:25,319 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:09:25" (1/1) ... [2024-11-16 03:09:25,327 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:09:25" (1/1) ... [2024-11-16 03:09:25,330 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:09:25" (1/1) ... [2024-11-16 03:09:25,340 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 03:09:25,342 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 03:09:25,342 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 03:09:25,342 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 03:09:25,343 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:09:25" (1/1) ... [2024-11-16 03:09:25,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 03:09:25,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:09:25,375 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) [2024-11-16 03:09:25,378 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 [2024-11-16 03:09:25,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 03:09:25,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 03:09:25,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 03:09:25,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 03:09:25,488 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 03:09:25,490 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 03:09:26,870 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-16 03:09:26,870 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 03:09:26,891 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 03:09:26,893 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 03:09:26,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:09:26 BoogieIcfgContainer [2024-11-16 03:09:26,894 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 03:09:26,896 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 03:09:26,897 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 03:09:26,899 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 03:09:26,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 03:09:24" (1/3) ... [2024-11-16 03:09:26,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c6f4476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:09:26, skipping insertion in model container [2024-11-16 03:09:26,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:09:25" (2/3) ... [2024-11-16 03:09:26,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c6f4476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:09:26, skipping insertion in model container [2024-11-16 03:09:26,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:09:26" (3/3) ... [2024-11-16 03:09:26,902 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label36.c [2024-11-16 03:09:26,915 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 03:09:26,916 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 03:09:26,978 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 03:09:26,985 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;@54562b26, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 03:09:26,985 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 03:09:26,997 INFO L276 IsEmpty]: Start isEmpty. Operand has 305 states, 303 states have (on average 1.7227722772277227) internal successors, (522), 304 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:27,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-16 03:09:27,013 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:09:27,014 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:09:27,014 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:09:27,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:09:27,020 INFO L85 PathProgramCache]: Analyzing trace with hash -2124506995, now seen corresponding path program 1 times [2024-11-16 03:09:27,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:09:27,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400670042] [2024-11-16 03:09:27,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:09:27,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:09:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:09:27,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:09:27,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:09:27,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400670042] [2024-11-16 03:09:27,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400670042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:09:27,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:09:27,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:09:27,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771872723] [2024-11-16 03:09:27,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:09:27,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:09:27,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:09:27,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:09:27,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:09:27,860 INFO L87 Difference]: Start difference. First operand has 305 states, 303 states have (on average 1.7227722772277227) internal successors, (522), 304 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:28,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:09:28,831 INFO L93 Difference]: Finished difference Result 863 states and 1504 transitions. [2024-11-16 03:09:28,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:09:28,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2024-11-16 03:09:28,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:09:28,846 INFO L225 Difference]: With dead ends: 863 [2024-11-16 03:09:28,846 INFO L226 Difference]: Without dead ends: 465 [2024-11-16 03:09:28,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:09:28,852 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 109 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 03:09:28,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 191 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 03:09:28,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2024-11-16 03:09:28,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 463. [2024-11-16 03:09:28,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 1.5346320346320346) internal successors, (709), 462 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:28,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 709 transitions. [2024-11-16 03:09:28,898 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 709 transitions. Word has length 181 [2024-11-16 03:09:28,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:09:28,899 INFO L471 AbstractCegarLoop]: Abstraction has 463 states and 709 transitions. [2024-11-16 03:09:28,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:28,899 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 709 transitions. [2024-11-16 03:09:28,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-16 03:09:28,902 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:09:28,902 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:09:28,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 03:09:28,903 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:09:28,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:09:28,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1602617671, now seen corresponding path program 1 times [2024-11-16 03:09:28,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:09:28,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887582742] [2024-11-16 03:09:28,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:09:28,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:09:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:09:29,071 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:09:29,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:09:29,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887582742] [2024-11-16 03:09:29,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887582742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:09:29,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:09:29,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:09:29,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707452139] [2024-11-16 03:09:29,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:09:29,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:09:29,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:09:29,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:09:29,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:09:29,075 INFO L87 Difference]: Start difference. First operand 463 states and 709 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:29,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:09:29,761 INFO L93 Difference]: Finished difference Result 1352 states and 2087 transitions. [2024-11-16 03:09:29,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:09:29,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2024-11-16 03:09:29,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:09:29,764 INFO L225 Difference]: With dead ends: 1352 [2024-11-16 03:09:29,764 INFO L226 Difference]: Without dead ends: 891 [2024-11-16 03:09:29,766 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:09:29,767 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 250 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 03:09:29,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 94 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 03:09:29,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2024-11-16 03:09:29,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 875. [2024-11-16 03:09:29,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 874 states have (on average 1.5102974828375286) internal successors, (1320), 874 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:29,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1320 transitions. [2024-11-16 03:09:29,804 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1320 transitions. Word has length 190 [2024-11-16 03:09:29,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:09:29,804 INFO L471 AbstractCegarLoop]: Abstraction has 875 states and 1320 transitions. [2024-11-16 03:09:29,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:29,804 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1320 transitions. [2024-11-16 03:09:29,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-16 03:09:29,807 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:09:29,808 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:09:29,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 03:09:29,808 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:09:29,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:09:29,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1639822362, now seen corresponding path program 1 times [2024-11-16 03:09:29,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:09:29,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827585704] [2024-11-16 03:09:29,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:09:29,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:09:29,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:09:30,452 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 03:09:30,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:09:30,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827585704] [2024-11-16 03:09:30,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827585704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:09:30,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:09:30,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:09:30,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331960508] [2024-11-16 03:09:30,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:09:30,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:09:30,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:09:30,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:09:30,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:09:30,459 INFO L87 Difference]: Start difference. First operand 875 states and 1320 transitions. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:31,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:09:31,189 INFO L93 Difference]: Finished difference Result 1895 states and 2897 transitions. [2024-11-16 03:09:31,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 03:09:31,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 198 [2024-11-16 03:09:31,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:09:31,192 INFO L225 Difference]: With dead ends: 1895 [2024-11-16 03:09:31,192 INFO L226 Difference]: Without dead ends: 847 [2024-11-16 03:09:31,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:09:31,194 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 331 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 03:09:31,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 52 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 03:09:31,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2024-11-16 03:09:31,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 847. [2024-11-16 03:09:31,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 846 states have (on average 1.3628841607565012) internal successors, (1153), 846 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:31,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1153 transitions. [2024-11-16 03:09:31,207 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1153 transitions. Word has length 198 [2024-11-16 03:09:31,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:09:31,207 INFO L471 AbstractCegarLoop]: Abstraction has 847 states and 1153 transitions. [2024-11-16 03:09:31,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:31,208 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1153 transitions. [2024-11-16 03:09:31,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-16 03:09:31,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:09:31,210 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:09:31,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 03:09:31,210 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:09:31,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:09:31,211 INFO L85 PathProgramCache]: Analyzing trace with hash 907503044, now seen corresponding path program 1 times [2024-11-16 03:09:31,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:09:31,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561437574] [2024-11-16 03:09:31,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:09:31,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:09:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:09:31,406 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:09:31,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:09:31,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561437574] [2024-11-16 03:09:31,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561437574] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:09:31,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:09:31,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:09:31,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221887117] [2024-11-16 03:09:31,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:09:31,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:09:31,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:09:31,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:09:31,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:09:31,409 INFO L87 Difference]: Start difference. First operand 847 states and 1153 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:31,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:09:31,913 INFO L93 Difference]: Finished difference Result 2518 states and 3434 transitions. [2024-11-16 03:09:31,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:09:31,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 205 [2024-11-16 03:09:31,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:09:31,918 INFO L225 Difference]: With dead ends: 2518 [2024-11-16 03:09:31,918 INFO L226 Difference]: Without dead ends: 1673 [2024-11-16 03:09:31,921 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:09:31,922 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 227 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 03:09:31,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 75 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 03:09:31,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2024-11-16 03:09:31,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 1672. [2024-11-16 03:09:31,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1672 states, 1671 states have (on average 1.322561340514662) internal successors, (2210), 1671 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:31,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1672 states to 1672 states and 2210 transitions. [2024-11-16 03:09:31,947 INFO L78 Accepts]: Start accepts. Automaton has 1672 states and 2210 transitions. Word has length 205 [2024-11-16 03:09:31,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:09:31,947 INFO L471 AbstractCegarLoop]: Abstraction has 1672 states and 2210 transitions. [2024-11-16 03:09:31,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:31,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1672 states and 2210 transitions. [2024-11-16 03:09:31,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-11-16 03:09:31,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:09:31,950 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:09:31,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 03:09:31,950 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:09:31,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:09:31,951 INFO L85 PathProgramCache]: Analyzing trace with hash -315293352, now seen corresponding path program 1 times [2024-11-16 03:09:31,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:09:31,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37008248] [2024-11-16 03:09:31,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:09:31,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:09:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:09:32,465 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:09:32,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:09:32,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37008248] [2024-11-16 03:09:32,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37008248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:09:32,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:09:32,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:09:32,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110823803] [2024-11-16 03:09:32,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:09:32,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:09:32,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:09:32,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:09:32,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:09:32,470 INFO L87 Difference]: Start difference. First operand 1672 states and 2210 transitions. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:33,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:09:33,343 INFO L93 Difference]: Finished difference Result 4346 states and 5761 transitions. [2024-11-16 03:09:33,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 03:09:33,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 213 [2024-11-16 03:09:33,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:09:33,350 INFO L225 Difference]: With dead ends: 4346 [2024-11-16 03:09:33,350 INFO L226 Difference]: Without dead ends: 2501 [2024-11-16 03:09:33,351 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:09:33,353 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 195 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 03:09:33,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 100 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 03:09:33,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2501 states. [2024-11-16 03:09:33,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2501 to 2500. [2024-11-16 03:09:33,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2500 states, 2499 states have (on average 1.3057222889155662) internal successors, (3263), 2499 states have internal predecessors, (3263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:33,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2500 states to 2500 states and 3263 transitions. [2024-11-16 03:09:33,383 INFO L78 Accepts]: Start accepts. Automaton has 2500 states and 3263 transitions. Word has length 213 [2024-11-16 03:09:33,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:09:33,384 INFO L471 AbstractCegarLoop]: Abstraction has 2500 states and 3263 transitions. [2024-11-16 03:09:33,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:33,384 INFO L276 IsEmpty]: Start isEmpty. Operand 2500 states and 3263 transitions. [2024-11-16 03:09:33,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-16 03:09:33,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:09:33,388 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:09:33,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 03:09:33,388 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:09:33,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:09:33,389 INFO L85 PathProgramCache]: Analyzing trace with hash -461245852, now seen corresponding path program 1 times [2024-11-16 03:09:33,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:09:33,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108933766] [2024-11-16 03:09:33,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:09:33,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:09:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:09:33,553 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 03:09:33,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:09:33,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108933766] [2024-11-16 03:09:33,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108933766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:09:33,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:09:33,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:09:33,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757484784] [2024-11-16 03:09:33,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:09:33,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:09:33,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:09:33,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:09:33,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:09:33,557 INFO L87 Difference]: Start difference. First operand 2500 states and 3263 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 2 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:34,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:09:34,153 INFO L93 Difference]: Finished difference Result 6663 states and 8671 transitions. [2024-11-16 03:09:34,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:09:34,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 2 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2024-11-16 03:09:34,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:09:34,166 INFO L225 Difference]: With dead ends: 6663 [2024-11-16 03:09:34,167 INFO L226 Difference]: Without dead ends: 4165 [2024-11-16 03:09:34,170 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:09:34,171 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 203 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 03:09:34,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 122 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 03:09:34,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4165 states. [2024-11-16 03:09:34,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4165 to 4161. [2024-11-16 03:09:34,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4161 states, 4160 states have (on average 1.2947115384615384) internal successors, (5386), 4160 states have internal predecessors, (5386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:34,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4161 states to 4161 states and 5386 transitions. [2024-11-16 03:09:34,247 INFO L78 Accepts]: Start accepts. Automaton has 4161 states and 5386 transitions. Word has length 216 [2024-11-16 03:09:34,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:09:34,247 INFO L471 AbstractCegarLoop]: Abstraction has 4161 states and 5386 transitions. [2024-11-16 03:09:34,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 2 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:34,248 INFO L276 IsEmpty]: Start isEmpty. Operand 4161 states and 5386 transitions. [2024-11-16 03:09:34,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-16 03:09:34,255 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:09:34,255 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:09:34,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 03:09:34,256 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:09:34,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:09:34,256 INFO L85 PathProgramCache]: Analyzing trace with hash 666751269, now seen corresponding path program 1 times [2024-11-16 03:09:34,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:09:34,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148953340] [2024-11-16 03:09:34,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:09:34,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:09:34,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:09:35,088 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:09:35,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:09:35,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148953340] [2024-11-16 03:09:35,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148953340] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:09:35,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259815613] [2024-11-16 03:09:35,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:09:35,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:09:35,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:09:35,091 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) [2024-11-16 03:09:35,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 03:09:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:09:35,213 INFO L255 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:09:35,220 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:09:35,417 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-16 03:09:35,417 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:09:35,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259815613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:09:35,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:09:35,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-16 03:09:35,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940744114] [2024-11-16 03:09:35,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:09:35,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:09:35,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:09:35,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:09:35,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:09:35,419 INFO L87 Difference]: Start difference. First operand 4161 states and 5386 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:35,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:09:35,961 INFO L93 Difference]: Finished difference Result 8329 states and 10786 transitions. [2024-11-16 03:09:35,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:09:35,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 221 [2024-11-16 03:09:35,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:09:36,010 INFO L225 Difference]: With dead ends: 8329 [2024-11-16 03:09:36,010 INFO L226 Difference]: Without dead ends: 4170 [2024-11-16 03:09:36,013 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:09:36,013 INFO L432 NwaCegarLoop]: 308 mSDtfsCounter, 45 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 03:09:36,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 325 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 03:09:36,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4170 states. [2024-11-16 03:09:36,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4170 to 4161. [2024-11-16 03:09:36,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4161 states, 4160 states have (on average 1.284375) internal successors, (5343), 4160 states have internal predecessors, (5343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:36,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4161 states to 4161 states and 5343 transitions. [2024-11-16 03:09:36,056 INFO L78 Accepts]: Start accepts. Automaton has 4161 states and 5343 transitions. Word has length 221 [2024-11-16 03:09:36,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:09:36,057 INFO L471 AbstractCegarLoop]: Abstraction has 4161 states and 5343 transitions. [2024-11-16 03:09:36,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:36,057 INFO L276 IsEmpty]: Start isEmpty. Operand 4161 states and 5343 transitions. [2024-11-16 03:09:36,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-16 03:09:36,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:09:36,062 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:09:36,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 03:09:36,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:09:36,264 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:09:36,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:09:36,264 INFO L85 PathProgramCache]: Analyzing trace with hash -852775030, now seen corresponding path program 1 times [2024-11-16 03:09:36,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:09:36,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863402379] [2024-11-16 03:09:36,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:09:36,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:09:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:09:37,220 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 52 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 03:09:37,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:09:37,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863402379] [2024-11-16 03:09:37,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863402379] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:09:37,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900030323] [2024-11-16 03:09:37,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:09:37,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:09:37,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:09:37,223 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) [2024-11-16 03:09:37,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 03:09:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:09:37,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:09:37,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:09:37,592 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-16 03:09:37,592 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:09:37,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900030323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:09:37,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:09:37,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-16 03:09:37,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077941698] [2024-11-16 03:09:37,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:09:37,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:09:37,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:09:37,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:09:37,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:09:37,594 INFO L87 Difference]: Start difference. First operand 4161 states and 5343 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:38,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:09:38,118 INFO L93 Difference]: Finished difference Result 12406 states and 15930 transitions. [2024-11-16 03:09:38,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:09:38,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 228 [2024-11-16 03:09:38,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:09:38,136 INFO L225 Difference]: With dead ends: 12406 [2024-11-16 03:09:38,136 INFO L226 Difference]: Without dead ends: 8247 [2024-11-16 03:09:38,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:09:38,141 INFO L432 NwaCegarLoop]: 325 mSDtfsCounter, 40 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 03:09:38,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 348 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 03:09:38,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8247 states. [2024-11-16 03:09:38,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8247 to 8241. [2024-11-16 03:09:38,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8241 states, 8240 states have (on average 1.175485436893204) internal successors, (9686), 8240 states have internal predecessors, (9686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:38,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8241 states to 8241 states and 9686 transitions. [2024-11-16 03:09:38,238 INFO L78 Accepts]: Start accepts. Automaton has 8241 states and 9686 transitions. Word has length 228 [2024-11-16 03:09:38,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:09:38,238 INFO L471 AbstractCegarLoop]: Abstraction has 8241 states and 9686 transitions. [2024-11-16 03:09:38,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:38,239 INFO L276 IsEmpty]: Start isEmpty. Operand 8241 states and 9686 transitions. [2024-11-16 03:09:38,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-11-16 03:09:38,248 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:09:38,248 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:09:38,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 03:09:38,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-16 03:09:38,450 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:09:38,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:09:38,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1752182898, now seen corresponding path program 1 times [2024-11-16 03:09:38,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:09:38,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677670154] [2024-11-16 03:09:38,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:09:38,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:09:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:09:38,562 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 03:09:38,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:09:38,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677670154] [2024-11-16 03:09:38,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677670154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:09:38,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:09:38,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:09:38,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450401976] [2024-11-16 03:09:38,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:09:38,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:09:38,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:09:38,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:09:38,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:09:38,564 INFO L87 Difference]: Start difference. First operand 8241 states and 9686 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:39,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:09:39,171 INFO L93 Difference]: Finished difference Result 24259 states and 28487 transitions. [2024-11-16 03:09:39,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:09:39,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 238 [2024-11-16 03:09:39,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:09:39,195 INFO L225 Difference]: With dead ends: 24259 [2024-11-16 03:09:39,196 INFO L226 Difference]: Without dead ends: 16020 [2024-11-16 03:09:39,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:09:39,203 INFO L432 NwaCegarLoop]: 311 mSDtfsCounter, 226 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 03:09:39,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 334 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 03:09:39,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16020 states. [2024-11-16 03:09:39,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16020 to 16011. [2024-11-16 03:09:39,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16011 states, 16010 states have (on average 1.1504684572142412) internal successors, (18419), 16010 states have internal predecessors, (18419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:39,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16011 states to 16011 states and 18419 transitions. [2024-11-16 03:09:39,357 INFO L78 Accepts]: Start accepts. Automaton has 16011 states and 18419 transitions. Word has length 238 [2024-11-16 03:09:39,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:09:39,357 INFO L471 AbstractCegarLoop]: Abstraction has 16011 states and 18419 transitions. [2024-11-16 03:09:39,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:39,357 INFO L276 IsEmpty]: Start isEmpty. Operand 16011 states and 18419 transitions. [2024-11-16 03:09:39,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-11-16 03:09:39,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:09:39,374 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:09:39,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 03:09:39,374 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:09:39,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:09:39,374 INFO L85 PathProgramCache]: Analyzing trace with hash 456747828, now seen corresponding path program 1 times [2024-11-16 03:09:39,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:09:39,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180709677] [2024-11-16 03:09:39,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:09:39,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:09:39,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:09:39,547 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:09:39,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:09:39,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180709677] [2024-11-16 03:09:39,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180709677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:09:39,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:09:39,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:09:39,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335317391] [2024-11-16 03:09:39,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:09:39,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:09:39,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:09:39,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:09:39,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:09:39,550 INFO L87 Difference]: Start difference. First operand 16011 states and 18419 transitions. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 2 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:40,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:09:40,252 INFO L93 Difference]: Finished difference Result 44127 states and 50713 transitions. [2024-11-16 03:09:40,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:09:40,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 2 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 257 [2024-11-16 03:09:40,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:09:40,294 INFO L225 Difference]: With dead ends: 44127 [2024-11-16 03:09:40,294 INFO L226 Difference]: Without dead ends: 28118 [2024-11-16 03:09:40,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:09:40,313 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 158 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 03:09:40,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 107 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 03:09:40,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28118 states. [2024-11-16 03:09:40,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28118 to 28114. [2024-11-16 03:09:40,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28114 states, 28113 states have (on average 1.1471205492121084) internal successors, (32249), 28113 states have internal predecessors, (32249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:40,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28114 states to 28114 states and 32249 transitions. [2024-11-16 03:09:40,603 INFO L78 Accepts]: Start accepts. Automaton has 28114 states and 32249 transitions. Word has length 257 [2024-11-16 03:09:40,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:09:40,604 INFO L471 AbstractCegarLoop]: Abstraction has 28114 states and 32249 transitions. [2024-11-16 03:09:40,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 2 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:40,605 INFO L276 IsEmpty]: Start isEmpty. Operand 28114 states and 32249 transitions. [2024-11-16 03:09:40,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-11-16 03:09:40,628 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:09:40,629 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:09:40,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 03:09:40,629 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:09:40,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:09:40,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1642819246, now seen corresponding path program 1 times [2024-11-16 03:09:40,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:09:40,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090564851] [2024-11-16 03:09:40,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:09:40,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:09:40,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:09:40,938 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-16 03:09:40,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:09:40,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090564851] [2024-11-16 03:09:40,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090564851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:09:40,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:09:40,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:09:40,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142218190] [2024-11-16 03:09:40,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:09:40,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:09:40,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:09:40,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:09:40,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:09:40,940 INFO L87 Difference]: Start difference. First operand 28114 states and 32249 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 2 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:41,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:09:41,633 INFO L93 Difference]: Finished difference Result 65610 states and 76325 transitions. [2024-11-16 03:09:41,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:09:41,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 2 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 257 [2024-11-16 03:09:41,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:09:41,686 INFO L225 Difference]: With dead ends: 65610 [2024-11-16 03:09:41,687 INFO L226 Difference]: Without dead ends: 37498 [2024-11-16 03:09:41,716 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:09:41,717 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 174 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 03:09:41,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 129 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 03:09:41,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37498 states. [2024-11-16 03:09:42,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37498 to 37498. [2024-11-16 03:09:42,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37498 states, 37497 states have (on average 1.1251566792010028) internal successors, (42190), 37497 states have internal predecessors, (42190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:42,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37498 states to 37498 states and 42190 transitions. [2024-11-16 03:09:42,127 INFO L78 Accepts]: Start accepts. Automaton has 37498 states and 42190 transitions. Word has length 257 [2024-11-16 03:09:42,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:09:42,127 INFO L471 AbstractCegarLoop]: Abstraction has 37498 states and 42190 transitions. [2024-11-16 03:09:42,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 2 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:42,128 INFO L276 IsEmpty]: Start isEmpty. Operand 37498 states and 42190 transitions. [2024-11-16 03:09:42,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-16 03:09:42,149 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:09:42,149 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:09:42,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 03:09:42,149 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:09:42,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:09:42,149 INFO L85 PathProgramCache]: Analyzing trace with hash 2042854273, now seen corresponding path program 1 times [2024-11-16 03:09:42,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:09:42,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581477786] [2024-11-16 03:09:42,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:09:42,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:09:42,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:09:43,117 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 83 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:09:43,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:09:43,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581477786] [2024-11-16 03:09:43,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581477786] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:09:43,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212802259] [2024-11-16 03:09:43,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:09:43,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:09:43,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:09:43,120 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:09:43,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 03:09:43,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:09:43,244 INFO L255 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:09:43,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:09:43,328 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 03:09:43,329 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:09:43,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212802259] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:09:43,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:09:43,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-11-16 03:09:43,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149886943] [2024-11-16 03:09:43,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:09:43,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:09:43,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:09:43,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:09:43,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:09:43,331 INFO L87 Difference]: Start difference. First operand 37498 states and 42190 transitions. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 2 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:43,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:09:43,975 INFO L93 Difference]: Finished difference Result 97101 states and 109790 transitions. [2024-11-16 03:09:43,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:09:43,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 2 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 265 [2024-11-16 03:09:43,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:09:44,041 INFO L225 Difference]: With dead ends: 97101 [2024-11-16 03:09:44,041 INFO L226 Difference]: Without dead ends: 59605 [2024-11-16 03:09:44,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:09:44,072 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 155 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 03:09:44,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 131 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 03:09:44,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59605 states. [2024-11-16 03:09:44,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59605 to 52396. [2024-11-16 03:09:44,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52396 states, 52395 states have (on average 1.1408722206317397) internal successors, (59776), 52395 states have internal predecessors, (59776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:44,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52396 states to 52396 states and 59776 transitions. [2024-11-16 03:09:44,670 INFO L78 Accepts]: Start accepts. Automaton has 52396 states and 59776 transitions. Word has length 265 [2024-11-16 03:09:44,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:09:44,671 INFO L471 AbstractCegarLoop]: Abstraction has 52396 states and 59776 transitions. [2024-11-16 03:09:44,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 2 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:44,671 INFO L276 IsEmpty]: Start isEmpty. Operand 52396 states and 59776 transitions. [2024-11-16 03:09:44,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2024-11-16 03:09:44,698 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:09:44,698 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:09:44,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 03:09:44,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:09:44,900 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:09:44,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:09:44,901 INFO L85 PathProgramCache]: Analyzing trace with hash -2101026281, now seen corresponding path program 1 times [2024-11-16 03:09:44,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:09:44,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41773019] [2024-11-16 03:09:44,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:09:44,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:09:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:09:45,589 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 72 proven. 7 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-16 03:09:45,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:09:45,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41773019] [2024-11-16 03:09:45,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41773019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:09:45,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894146238] [2024-11-16 03:09:45,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:09:45,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:09:45,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:09:45,596 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:09:45,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 03:09:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:09:45,759 INFO L255 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:09:45,764 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:09:45,934 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-16 03:09:45,935 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:09:45,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894146238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:09:45,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:09:45,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-16 03:09:45,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223256698] [2024-11-16 03:09:45,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:09:45,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:09:45,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:09:45,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:09:45,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:09:45,937 INFO L87 Difference]: Start difference. First operand 52396 states and 59776 transitions. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:46,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:09:46,600 INFO L93 Difference]: Finished difference Result 104598 states and 119362 transitions. [2024-11-16 03:09:46,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:09:46,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 292 [2024-11-16 03:09:46,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:09:46,656 INFO L225 Difference]: With dead ends: 104598 [2024-11-16 03:09:46,656 INFO L226 Difference]: Without dead ends: 52204 [2024-11-16 03:09:46,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:09:46,689 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 84 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 03:09:46,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 282 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 03:09:46,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52204 states. [2024-11-16 03:09:47,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52204 to 51988. [2024-11-16 03:09:47,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51988 states, 51987 states have (on average 1.1331679073614558) internal successors, (58910), 51987 states have internal predecessors, (58910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:47,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51988 states to 51988 states and 58910 transitions. [2024-11-16 03:09:47,496 INFO L78 Accepts]: Start accepts. Automaton has 51988 states and 58910 transitions. Word has length 292 [2024-11-16 03:09:47,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:09:47,496 INFO L471 AbstractCegarLoop]: Abstraction has 51988 states and 58910 transitions. [2024-11-16 03:09:47,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:47,496 INFO L276 IsEmpty]: Start isEmpty. Operand 51988 states and 58910 transitions. [2024-11-16 03:09:47,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2024-11-16 03:09:47,646 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:09:47,647 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:09:47,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 03:09:47,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:09:47,848 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:09:47,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:09:47,848 INFO L85 PathProgramCache]: Analyzing trace with hash -2052259785, now seen corresponding path program 1 times [2024-11-16 03:09:47,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:09:47,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753043977] [2024-11-16 03:09:47,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:09:47,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:09:47,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:09:48,292 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 108 proven. 7 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2024-11-16 03:09:48,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:09:48,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753043977] [2024-11-16 03:09:48,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753043977] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:09:48,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504918551] [2024-11-16 03:09:48,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:09:48,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:09:48,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:09:48,294 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:09:48,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 03:09:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:09:48,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 03:09:48,438 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:09:48,481 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-16 03:09:48,481 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:09:48,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504918551] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:09:48,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:09:48,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-16 03:09:48,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400520921] [2024-11-16 03:09:48,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:09:48,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:09:48,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:09:48,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:09:48,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:09:48,483 INFO L87 Difference]: Start difference. First operand 51988 states and 58910 transitions. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:49,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:09:49,163 INFO L93 Difference]: Finished difference Result 99446 states and 112494 transitions. [2024-11-16 03:09:49,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:09:49,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 335 [2024-11-16 03:09:49,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:09:49,211 INFO L225 Difference]: With dead ends: 99446 [2024-11-16 03:09:49,211 INFO L226 Difference]: Without dead ends: 47460 [2024-11-16 03:09:49,243 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:09:49,244 INFO L432 NwaCegarLoop]: 303 mSDtfsCounter, 201 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 03:09:49,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 319 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 03:09:49,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47460 states. [2024-11-16 03:09:49,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47460 to 47453. [2024-11-16 03:09:49,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47453 states, 47452 states have (on average 1.1045899013740201) internal successors, (52415), 47452 states have internal predecessors, (52415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:49,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47453 states to 47453 states and 52415 transitions. [2024-11-16 03:09:49,944 INFO L78 Accepts]: Start accepts. Automaton has 47453 states and 52415 transitions. Word has length 335 [2024-11-16 03:09:49,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:09:49,944 INFO L471 AbstractCegarLoop]: Abstraction has 47453 states and 52415 transitions. [2024-11-16 03:09:49,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:49,945 INFO L276 IsEmpty]: Start isEmpty. Operand 47453 states and 52415 transitions. [2024-11-16 03:09:49,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2024-11-16 03:09:49,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:09:49,975 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:09:49,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-16 03:09:50,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-16 03:09:50,181 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:09:50,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:09:50,181 INFO L85 PathProgramCache]: Analyzing trace with hash -635213060, now seen corresponding path program 1 times [2024-11-16 03:09:50,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:09:50,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899487327] [2024-11-16 03:09:50,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:09:50,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:09:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:09:51,575 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 78 proven. 7 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2024-11-16 03:09:51,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:09:51,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899487327] [2024-11-16 03:09:51,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899487327] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:09:51,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134503291] [2024-11-16 03:09:51,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:09:51,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:09:51,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:09:51,578 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:09:51,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 03:09:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:09:51,835 INFO L255 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 03:09:51,839 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:09:51,974 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 209 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 03:09:51,974 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:09:51,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134503291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:09:51,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:09:51,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-16 03:09:51,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142172313] [2024-11-16 03:09:51,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:09:51,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:09:51,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:09:51,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:09:51,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:09:51,976 INFO L87 Difference]: Start difference. First operand 47453 states and 52415 transitions. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:52,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:09:52,601 INFO L93 Difference]: Finished difference Result 94090 states and 103905 transitions. [2024-11-16 03:09:52,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:09:52,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 352 [2024-11-16 03:09:52,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:09:52,648 INFO L225 Difference]: With dead ends: 94090 [2024-11-16 03:09:52,649 INFO L226 Difference]: Without dead ends: 46639 [2024-11-16 03:09:52,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:09:52,679 INFO L432 NwaCegarLoop]: 276 mSDtfsCounter, 112 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 03:09:52,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 291 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 03:09:52,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46639 states. [2024-11-16 03:09:53,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46639 to 34390. [2024-11-16 03:09:53,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34390 states, 34389 states have (on average 1.0884294396463985) internal successors, (37430), 34389 states have internal predecessors, (37430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:53,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34390 states to 34390 states and 37430 transitions. [2024-11-16 03:09:53,259 INFO L78 Accepts]: Start accepts. Automaton has 34390 states and 37430 transitions. Word has length 352 [2024-11-16 03:09:53,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:09:53,260 INFO L471 AbstractCegarLoop]: Abstraction has 34390 states and 37430 transitions. [2024-11-16 03:09:53,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:53,260 INFO L276 IsEmpty]: Start isEmpty. Operand 34390 states and 37430 transitions. [2024-11-16 03:09:53,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2024-11-16 03:09:53,293 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:09:53,294 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:09:53,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 03:09:53,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-16 03:09:53,498 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:09:53,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:09:53,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1946112510, now seen corresponding path program 1 times [2024-11-16 03:09:53,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:09:53,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189668245] [2024-11-16 03:09:53,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:09:53,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:09:53,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:09:54,127 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 225 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-16 03:09:54,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:09:54,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189668245] [2024-11-16 03:09:54,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189668245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:09:54,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:09:54,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:09:54,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766821014] [2024-11-16 03:09:54,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:09:54,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:09:54,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:09:54,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:09:54,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:09:54,129 INFO L87 Difference]: Start difference. First operand 34390 states and 37430 transitions. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 2 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:54,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:09:54,459 INFO L93 Difference]: Finished difference Result 102756 states and 111844 transitions. [2024-11-16 03:09:54,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:09:54,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 2 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 402 [2024-11-16 03:09:54,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:09:54,523 INFO L225 Difference]: With dead ends: 102756 [2024-11-16 03:09:54,524 INFO L226 Difference]: Without dead ends: 68368 [2024-11-16 03:09:54,552 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:09:54,553 INFO L432 NwaCegarLoop]: 251 mSDtfsCounter, 186 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 03:09:54,553 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 489 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 03:09:54,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68368 states. [2024-11-16 03:09:55,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68368 to 68364. [2024-11-16 03:09:55,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68364 states, 68363 states have (on average 1.088176352705411) internal successors, (74391), 68363 states have internal predecessors, (74391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:55,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68364 states to 68364 states and 74391 transitions. [2024-11-16 03:09:55,389 INFO L78 Accepts]: Start accepts. Automaton has 68364 states and 74391 transitions. Word has length 402 [2024-11-16 03:09:55,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:09:55,389 INFO L471 AbstractCegarLoop]: Abstraction has 68364 states and 74391 transitions. [2024-11-16 03:09:55,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 2 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:55,390 INFO L276 IsEmpty]: Start isEmpty. Operand 68364 states and 74391 transitions. [2024-11-16 03:09:55,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2024-11-16 03:09:55,413 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:09:55,414 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:09:55,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 03:09:55,414 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:09:55,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:09:55,414 INFO L85 PathProgramCache]: Analyzing trace with hash -643332555, now seen corresponding path program 1 times [2024-11-16 03:09:55,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:09:55,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743920756] [2024-11-16 03:09:55,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:09:55,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:09:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:09:57,248 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 117 proven. 7 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2024-11-16 03:09:57,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:09:57,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743920756] [2024-11-16 03:09:57,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743920756] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:09:57,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716161981] [2024-11-16 03:09:57,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:09:57,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:09:57,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:09:57,250 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:09:57,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 03:09:57,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:09:57,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 03:09:57,421 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:09:57,579 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 225 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-16 03:09:57,579 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:09:57,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716161981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:09:57,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:09:57,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-16 03:09:57,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699258088] [2024-11-16 03:09:57,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:09:57,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:09:57,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:09:57,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:09:57,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:09:57,581 INFO L87 Difference]: Start difference. First operand 68364 states and 74391 transitions. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:58,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:09:58,327 INFO L93 Difference]: Finished difference Result 154541 states and 168276 transitions. [2024-11-16 03:09:58,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:09:58,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 407 [2024-11-16 03:09:58,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:09:58,329 INFO L225 Difference]: With dead ends: 154541 [2024-11-16 03:09:58,329 INFO L226 Difference]: Without dead ends: 0 [2024-11-16 03:09:58,378 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:09:58,379 INFO L432 NwaCegarLoop]: 298 mSDtfsCounter, 51 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 03:09:58,379 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 323 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 03:09:58,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-16 03:09:58,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-16 03:09:58,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:58,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-16 03:09:58,380 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 407 [2024-11-16 03:09:58,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:09:58,381 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-16 03:09:58,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:09:58,381 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-16 03:09:58,381 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-16 03:09:58,383 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-16 03:09:58,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 03:09:58,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:09:58,587 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:09:58,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-16 03:10:05,920 WARN L286 SmtUtils]: Spent 7.33s on a formula simplification. DAG size of input: 528 DAG size of output: 534 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-11-16 03:10:10,763 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-16 03:10:10,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 03:10:10 BoogieIcfgContainer [2024-11-16 03:10:10,798 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-16 03:10:10,798 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-16 03:10:10,798 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-16 03:10:10,799 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-16 03:10:10,799 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:09:26" (3/4) ... [2024-11-16 03:10:10,802 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-16 03:10:10,845 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-16 03:10:10,847 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-16 03:10:10,848 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-16 03:10:10,854 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-16 03:10:11,119 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-16 03:10:11,120 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-16 03:10:11,120 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-16 03:10:11,121 INFO L158 Benchmark]: Toolchain (without parser) took 46739.14ms. Allocated memory was 195.0MB in the beginning and 11.7GB in the end (delta: 11.5GB). Free memory was 119.3MB in the beginning and 10.5GB in the end (delta: -10.4GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-11-16 03:10:11,121 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 113.2MB. Free memory is still 76.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 03:10:11,122 INFO L158 Benchmark]: CACSL2BoogieTranslator took 685.04ms. Allocated memory is still 195.0MB. Free memory was 119.1MB in the beginning and 110.2MB in the end (delta: 8.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-16 03:10:11,122 INFO L158 Benchmark]: Boogie Procedure Inliner took 113.92ms. Allocated memory is still 195.0MB. Free memory was 110.2MB in the beginning and 95.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-16 03:10:11,122 INFO L158 Benchmark]: Boogie Preprocessor took 158.28ms. Allocated memory is still 195.0MB. Free memory was 95.5MB in the beginning and 83.9MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-16 03:10:11,123 INFO L158 Benchmark]: IcfgBuilder took 1552.16ms. Allocated memory was 195.0MB in the beginning and 337.6MB in the end (delta: 142.6MB). Free memory was 83.9MB in the beginning and 247.6MB in the end (delta: -163.7MB). Peak memory consumption was 56.5MB. Max. memory is 16.1GB. [2024-11-16 03:10:11,126 INFO L158 Benchmark]: TraceAbstraction took 43901.62ms. Allocated memory was 337.6MB in the beginning and 11.7GB in the end (delta: 11.3GB). Free memory was 246.6MB in the beginning and 10.6GB in the end (delta: -10.3GB). Peak memory consumption was 5.2GB. Max. memory is 16.1GB. [2024-11-16 03:10:11,126 INFO L158 Benchmark]: Witness Printer took 321.97ms. Allocated memory is still 11.7GB. Free memory was 10.6GB in the beginning and 10.5GB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-11-16 03:10:11,128 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 113.2MB. Free memory is still 76.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 685.04ms. Allocated memory is still 195.0MB. Free memory was 119.1MB in the beginning and 110.2MB in the end (delta: 8.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 113.92ms. Allocated memory is still 195.0MB. Free memory was 110.2MB in the beginning and 95.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 158.28ms. Allocated memory is still 195.0MB. Free memory was 95.5MB in the beginning and 83.9MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * IcfgBuilder took 1552.16ms. Allocated memory was 195.0MB in the beginning and 337.6MB in the end (delta: 142.6MB). Free memory was 83.9MB in the beginning and 247.6MB in the end (delta: -163.7MB). Peak memory consumption was 56.5MB. Max. memory is 16.1GB. * TraceAbstraction took 43901.62ms. Allocated memory was 337.6MB in the beginning and 11.7GB in the end (delta: 11.3GB). Free memory was 246.6MB in the beginning and 10.6GB in the end (delta: -10.3GB). Peak memory consumption was 5.2GB. Max. memory is 16.1GB. * Witness Printer took 321.97ms. Allocated memory is still 11.7GB. Free memory was 10.6GB in the beginning and 10.5GB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 1582]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 305 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 31.6s, OverallIterations: 17, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.4s, AutomataDifference: 12.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2747 SdHoareTripleChecker+Valid, 9.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2747 mSDsluCounter, 3712 SdHoareTripleChecker+Invalid, 7.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 566 mSDsCounter, 1467 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9667 IncrementalHoareTripleChecker+Invalid, 11134 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1467 mSolverCounterUnsat, 3146 mSDtfsCounter, 9667 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2142 GetRequests, 2104 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68364occurred in iteration=16, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.7s AutomataMinimizationTime, 17 MinimizatonAttempts, 19737 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 10.1s InterpolantComputationTime, 6557 NumberOfCodeBlocks, 6557 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 6533 ConstructedInterpolants, 0 QuantifiedInterpolants, 29282 SizeOfPredicates, 0 NumberOfNonLiveVariables, 3735 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 24 InterpolantComputations, 17 PerfectInterpolantSequences, 3072/3121 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 1668]: Location Invariant Derived location invariant: null RESULT: Ultimate proved your program to be correct! [2024-11-16 03:10:11,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE