./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash f9c847a826e86c06ca90730b1e3bd09118dbfcc8c7c9aa6dc001687e12e32563 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 03:01:21,385 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 03:01:21,455 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-10 03:01:21,460 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 03:01:21,461 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 03:01:21,483 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 03:01:21,483 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 03:01:21,483 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 03:01:21,484 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 03:01:21,484 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 03:01:21,484 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 03:01:21,484 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 03:01:21,484 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 03:01:21,485 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 03:01:21,485 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 03:01:21,485 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 03:01:21,485 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 03:01:21,485 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 03:01:21,486 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 03:01:21,486 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 03:01:21,486 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 03:01:21,490 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 03:01:21,490 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 03:01:21,490 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 03:01:21,490 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 03:01:21,491 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 03:01:21,491 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 03:01:21,491 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 03:01:21,491 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 03:01:21,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 03:01:21,492 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 03:01:21,492 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 03:01:21,492 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 03:01:21,492 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 03:01:21,493 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 03:01:21,493 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 03:01:21,493 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 03:01:21,493 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 03:01:21,494 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 03:01:21,494 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9c847a826e86c06ca90730b1e3bd09118dbfcc8c7c9aa6dc001687e12e32563 [2024-11-10 03:01:21,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 03:01:21,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 03:01:21,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 03:01:21,701 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 03:01:21,702 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 03:01:21,702 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c [2024-11-10 03:01:22,895 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 03:01:23,077 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 03:01:23,078 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c [2024-11-10 03:01:23,090 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/965d73f3a/c0f24c5d71f0488890bfa9d18947b26f/FLAGf8489c766 [2024-11-10 03:01:23,481 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/965d73f3a/c0f24c5d71f0488890bfa9d18947b26f [2024-11-10 03:01:23,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 03:01:23,485 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 03:01:23,485 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 03:01:23,486 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 03:01:23,490 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 03:01:23,491 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:01:23" (1/1) ... [2024-11-10 03:01:23,491 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@189ad481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:01:23, skipping insertion in model container [2024-11-10 03:01:23,492 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:01:23" (1/1) ... [2024-11-10 03:01:23,513 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 03:01:23,671 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/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c[1255,1268] [2024-11-10 03:01:23,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 03:01:23,750 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 03:01:23,759 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/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vlunc.c[1255,1268] [2024-11-10 03:01:23,805 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 03:01:23,817 INFO L204 MainTranslator]: Completed translation [2024-11-10 03:01:23,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:01:23 WrapperNode [2024-11-10 03:01:23,818 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 03:01:23,818 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 03:01:23,819 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 03:01:23,819 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 03:01:23,824 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:01:23" (1/1) ... [2024-11-10 03:01:23,838 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:01:23" (1/1) ... [2024-11-10 03:01:23,886 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 516 [2024-11-10 03:01:23,886 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 03:01:23,887 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 03:01:23,887 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 03:01:23,887 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 03:01:23,895 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:01:23" (1/1) ... [2024-11-10 03:01:23,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:01:23" (1/1) ... [2024-11-10 03:01:23,913 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:01:23" (1/1) ... [2024-11-10 03:01:23,949 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]. [2024-11-10 03:01:23,950 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:01:23" (1/1) ... [2024-11-10 03:01:23,950 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:01:23" (1/1) ... [2024-11-10 03:01:23,972 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:01:23" (1/1) ... [2024-11-10 03:01:23,974 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:01:23" (1/1) ... [2024-11-10 03:01:23,981 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:01:23" (1/1) ... [2024-11-10 03:01:23,987 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:01:23" (1/1) ... [2024-11-10 03:01:23,994 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 03:01:23,996 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 03:01:23,996 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 03:01:23,996 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 03:01:23,997 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:01:23" (1/1) ... [2024-11-10 03:01:24,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 03:01:24,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 03:01:24,026 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) [2024-11-10 03:01:24,029 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 [2024-11-10 03:01:24,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 03:01:24,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 03:01:24,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 03:01:24,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 03:01:24,155 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 03:01:24,156 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 03:01:24,662 INFO L? ?]: Removed 314 outVars from TransFormulas that were not future-live. [2024-11-10 03:01:24,662 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 03:01:24,696 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 03:01:24,697 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 03:01:24,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:01:24 BoogieIcfgContainer [2024-11-10 03:01:24,697 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 03:01:24,699 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 03:01:24,699 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 03:01:24,701 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 03:01:24,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 03:01:23" (1/3) ... [2024-11-10 03:01:24,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4419c1be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:01:24, skipping insertion in model container [2024-11-10 03:01:24,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:01:23" (2/3) ... [2024-11-10 03:01:24,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4419c1be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:01:24, skipping insertion in model container [2024-11-10 03:01:24,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:01:24" (3/3) ... [2024-11-10 03:01:24,707 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_vlunc.c [2024-11-10 03:01:24,719 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 03:01:24,719 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 03:01:24,822 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 03:01:24,832 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;@3fec456a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 03:01:24,833 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-10 03:01:24,837 INFO L276 IsEmpty]: Start isEmpty. Operand has 133 states, 131 states have (on average 1.4809160305343512) internal successors, (194), 132 states have internal predecessors, (194), 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) [2024-11-10 03:01:24,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-10 03:01:24,844 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:01:24,845 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] [2024-11-10 03:01:24,845 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:01:24,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:01:24,850 INFO L85 PathProgramCache]: Analyzing trace with hash 2043150947, now seen corresponding path program 1 times [2024-11-10 03:01:24,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:01:24,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386630429] [2024-11-10 03:01:24,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:01:24,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:01:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:01:25,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:01:25,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:01:25,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386630429] [2024-11-10 03:01:25,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386630429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 03:01:25,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 03:01:25,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 03:01:25,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207684025] [2024-11-10 03:01:25,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 03:01:25,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 03:01:25,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:01:25,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 03:01:25,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 03:01:25,391 INFO L87 Difference]: Start difference. First operand has 133 states, 131 states have (on average 1.4809160305343512) internal successors, (194), 132 states have internal predecessors, (194), 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 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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) [2024-11-10 03:01:25,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:01:25,498 INFO L93 Difference]: Finished difference Result 237 states and 349 transitions. [2024-11-10 03:01:25,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 03:01:25,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 46 [2024-11-10 03:01:25,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:01:25,508 INFO L225 Difference]: With dead ends: 237 [2024-11-10 03:01:25,508 INFO L226 Difference]: Without dead ends: 130 [2024-11-10 03:01:25,510 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 03:01:25,512 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 0 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 03:01:25,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 463 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 03:01:25,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-10 03:01:25,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2024-11-10 03:01:25,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.4728682170542635) internal successors, (190), 129 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) [2024-11-10 03:01:25,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 190 transitions. [2024-11-10 03:01:25,538 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 190 transitions. Word has length 46 [2024-11-10 03:01:25,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:01:25,539 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 190 transitions. [2024-11-10 03:01:25,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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) [2024-11-10 03:01:25,539 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 190 transitions. [2024-11-10 03:01:25,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-10 03:01:25,540 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:01:25,540 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] [2024-11-10 03:01:25,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 03:01:25,540 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:01:25,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:01:25,541 INFO L85 PathProgramCache]: Analyzing trace with hash -941776636, now seen corresponding path program 1 times [2024-11-10 03:01:25,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:01:25,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647375555] [2024-11-10 03:01:25,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:01:25,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:01:25,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:01:25,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:01:25,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:01:25,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647375555] [2024-11-10 03:01:25,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647375555] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 03:01:25,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 03:01:25,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 03:01:25,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939552932] [2024-11-10 03:01:25,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 03:01:25,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 03:01:25,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:01:25,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 03:01:25,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 03:01:25,677 INFO L87 Difference]: Start difference. First operand 130 states and 190 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-11-10 03:01:25,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:01:25,744 INFO L93 Difference]: Finished difference Result 236 states and 345 transitions. [2024-11-10 03:01:25,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 03:01:25,745 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 47 [2024-11-10 03:01:25,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:01:25,746 INFO L225 Difference]: With dead ends: 236 [2024-11-10 03:01:25,746 INFO L226 Difference]: Without dead ends: 132 [2024-11-10 03:01:25,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 03:01:25,747 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 0 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 03:01:25,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 460 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 03:01:25,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-10 03:01:25,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2024-11-10 03:01:25,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.465648854961832) internal successors, (192), 131 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) [2024-11-10 03:01:25,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 192 transitions. [2024-11-10 03:01:25,753 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 192 transitions. Word has length 47 [2024-11-10 03:01:25,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:01:25,753 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 192 transitions. [2024-11-10 03:01:25,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-11-10 03:01:25,754 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 192 transitions. [2024-11-10 03:01:25,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-10 03:01:25,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:01:25,755 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] [2024-11-10 03:01:25,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 03:01:25,755 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:01:25,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:01:25,756 INFO L85 PathProgramCache]: Analyzing trace with hash 616938984, now seen corresponding path program 1 times [2024-11-10 03:01:25,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:01:25,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930069248] [2024-11-10 03:01:25,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:01:25,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:01:25,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:01:26,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:01:26,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:01:26,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930069248] [2024-11-10 03:01:26,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930069248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 03:01:26,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 03:01:26,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 03:01:26,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739333792] [2024-11-10 03:01:26,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 03:01:26,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 03:01:26,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:01:26,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 03:01:26,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-10 03:01:26,085 INFO L87 Difference]: Start difference. First operand 132 states and 192 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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) [2024-11-10 03:01:26,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:01:26,219 INFO L93 Difference]: Finished difference Result 243 states and 354 transitions. [2024-11-10 03:01:26,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 03:01:26,219 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 48 [2024-11-10 03:01:26,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:01:26,221 INFO L225 Difference]: With dead ends: 243 [2024-11-10 03:01:26,221 INFO L226 Difference]: Without dead ends: 137 [2024-11-10 03:01:26,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-10 03:01:26,223 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 1 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 03:01:26,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 748 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 03:01:26,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-10 03:01:26,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2024-11-10 03:01:26,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.4558823529411764) internal successors, (198), 136 states have internal predecessors, (198), 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) [2024-11-10 03:01:26,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 198 transitions. [2024-11-10 03:01:26,229 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 198 transitions. Word has length 48 [2024-11-10 03:01:26,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:01:26,230 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 198 transitions. [2024-11-10 03:01:26,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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) [2024-11-10 03:01:26,230 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 198 transitions. [2024-11-10 03:01:26,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-10 03:01:26,231 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:01:26,231 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] [2024-11-10 03:01:26,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 03:01:26,232 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:01:26,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:01:26,232 INFO L85 PathProgramCache]: Analyzing trace with hash 354934783, now seen corresponding path program 1 times [2024-11-10 03:01:26,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:01:26,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301485827] [2024-11-10 03:01:26,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:01:26,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:01:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:01:26,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:01:26,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:01:26,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301485827] [2024-11-10 03:01:26,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301485827] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 03:01:26,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 03:01:26,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 03:01:26,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774623131] [2024-11-10 03:01:26,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 03:01:26,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 03:01:26,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:01:26,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 03:01:26,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-10 03:01:26,402 INFO L87 Difference]: Start difference. First operand 137 states and 198 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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) [2024-11-10 03:01:26,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:01:26,548 INFO L93 Difference]: Finished difference Result 259 states and 375 transitions. [2024-11-10 03:01:26,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 03:01:26,549 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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 49 [2024-11-10 03:01:26,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:01:26,550 INFO L225 Difference]: With dead ends: 259 [2024-11-10 03:01:26,550 INFO L226 Difference]: Without dead ends: 148 [2024-11-10 03:01:26,550 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-10 03:01:26,551 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 5 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 03:01:26,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 893 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 03:01:26,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-10 03:01:26,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2024-11-10 03:01:26,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.4421768707482994) internal successors, (212), 147 states have internal predecessors, (212), 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) [2024-11-10 03:01:26,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 212 transitions. [2024-11-10 03:01:26,557 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 212 transitions. Word has length 49 [2024-11-10 03:01:26,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:01:26,557 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 212 transitions. [2024-11-10 03:01:26,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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) [2024-11-10 03:01:26,558 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 212 transitions. [2024-11-10 03:01:26,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-10 03:01:26,559 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:01:26,559 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] [2024-11-10 03:01:26,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 03:01:26,559 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:01:26,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:01:26,560 INFO L85 PathProgramCache]: Analyzing trace with hash -833630278, now seen corresponding path program 1 times [2024-11-10 03:01:26,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:01:26,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9172520] [2024-11-10 03:01:26,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:01:26,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:01:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:01:26,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:01:26,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:01:26,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9172520] [2024-11-10 03:01:26,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9172520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 03:01:26,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 03:01:26,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 03:01:26,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302920194] [2024-11-10 03:01:26,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 03:01:26,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 03:01:26,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:01:26,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 03:01:26,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 03:01:26,677 INFO L87 Difference]: Start difference. First operand 148 states and 212 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-11-10 03:01:26,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:01:26,784 INFO L93 Difference]: Finished difference Result 366 states and 522 transitions. [2024-11-10 03:01:26,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 03:01:26,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 49 [2024-11-10 03:01:26,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:01:26,785 INFO L225 Difference]: With dead ends: 366 [2024-11-10 03:01:26,785 INFO L226 Difference]: Without dead ends: 244 [2024-11-10 03:01:26,786 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-10 03:01:26,787 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 394 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 03:01:26,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 442 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 03:01:26,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-10 03:01:26,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 195. [2024-11-10 03:01:26,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.443298969072165) internal successors, (280), 194 states have internal predecessors, (280), 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) [2024-11-10 03:01:26,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 280 transitions. [2024-11-10 03:01:26,794 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 280 transitions. Word has length 49 [2024-11-10 03:01:26,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:01:26,794 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 280 transitions. [2024-11-10 03:01:26,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-11-10 03:01:26,795 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 280 transitions. [2024-11-10 03:01:26,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-10 03:01:26,796 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:01:26,796 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] [2024-11-10 03:01:26,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 03:01:26,796 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:01:26,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:01:26,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1800583890, now seen corresponding path program 1 times [2024-11-10 03:01:26,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:01:26,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898776155] [2024-11-10 03:01:26,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:01:26,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:01:26,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:01:26,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:01:26,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:01:26,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898776155] [2024-11-10 03:01:26,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898776155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 03:01:26,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 03:01:26,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 03:01:26,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98284156] [2024-11-10 03:01:26,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 03:01:26,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 03:01:26,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:01:26,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 03:01:26,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-10 03:01:26,918 INFO L87 Difference]: Start difference. First operand 195 states and 280 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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) [2024-11-10 03:01:27,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:01:27,031 INFO L93 Difference]: Finished difference Result 355 states and 509 transitions. [2024-11-10 03:01:27,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 03:01:27,032 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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 50 [2024-11-10 03:01:27,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:01:27,033 INFO L225 Difference]: With dead ends: 355 [2024-11-10 03:01:27,033 INFO L226 Difference]: Without dead ends: 217 [2024-11-10 03:01:27,033 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-10 03:01:27,034 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 5 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 03:01:27,034 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 893 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 03:01:27,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-11-10 03:01:27,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2024-11-10 03:01:27,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.4259259259259258) internal successors, (308), 216 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) [2024-11-10 03:01:27,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 308 transitions. [2024-11-10 03:01:27,040 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 308 transitions. Word has length 50 [2024-11-10 03:01:27,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:01:27,040 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 308 transitions. [2024-11-10 03:01:27,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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) [2024-11-10 03:01:27,041 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 308 transitions. [2024-11-10 03:01:27,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-10 03:01:27,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:01:27,045 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] [2024-11-10 03:01:27,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 03:01:27,045 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:01:27,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:01:27,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1742890999, now seen corresponding path program 1 times [2024-11-10 03:01:27,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:01:27,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876883179] [2024-11-10 03:01:27,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:01:27,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:01:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:01:27,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:01:27,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:01:27,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876883179] [2024-11-10 03:01:27,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876883179] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 03:01:27,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 03:01:27,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 03:01:27,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98376730] [2024-11-10 03:01:27,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 03:01:27,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 03:01:27,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:01:27,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 03:01:27,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 03:01:27,145 INFO L87 Difference]: Start difference. First operand 217 states and 308 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-11-10 03:01:27,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:01:27,255 INFO L93 Difference]: Finished difference Result 393 states and 552 transitions. [2024-11-10 03:01:27,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 03:01:27,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 50 [2024-11-10 03:01:27,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:01:27,256 INFO L225 Difference]: With dead ends: 393 [2024-11-10 03:01:27,257 INFO L226 Difference]: Without dead ends: 248 [2024-11-10 03:01:27,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-10 03:01:27,257 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 362 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 03:01:27,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 442 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 03:01:27,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-11-10 03:01:27,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 207. [2024-11-10 03:01:27,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.4174757281553398) internal successors, (292), 206 states have internal predecessors, (292), 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) [2024-11-10 03:01:27,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 292 transitions. [2024-11-10 03:01:27,262 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 292 transitions. Word has length 50 [2024-11-10 03:01:27,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:01:27,263 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 292 transitions. [2024-11-10 03:01:27,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-11-10 03:01:27,263 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 292 transitions. [2024-11-10 03:01:27,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-10 03:01:27,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:01:27,264 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] [2024-11-10 03:01:27,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 03:01:27,264 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:01:27,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:01:27,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1135556245, now seen corresponding path program 1 times [2024-11-10 03:01:27,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:01:27,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15057682] [2024-11-10 03:01:27,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:01:27,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:01:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:01:27,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:01:27,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:01:27,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15057682] [2024-11-10 03:01:27,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15057682] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 03:01:27,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 03:01:27,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 03:01:27,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317657551] [2024-11-10 03:01:27,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 03:01:27,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 03:01:27,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:01:27,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 03:01:27,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-10 03:01:27,399 INFO L87 Difference]: Start difference. First operand 207 states and 292 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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) [2024-11-10 03:01:27,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:01:27,512 INFO L93 Difference]: Finished difference Result 387 states and 545 transitions. [2024-11-10 03:01:27,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 03:01:27,513 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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 51 [2024-11-10 03:01:27,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:01:27,514 INFO L225 Difference]: With dead ends: 387 [2024-11-10 03:01:27,514 INFO L226 Difference]: Without dead ends: 229 [2024-11-10 03:01:27,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-10 03:01:27,515 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 5 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 03:01:27,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 893 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 03:01:27,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-10 03:01:27,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2024-11-10 03:01:27,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.4035087719298245) internal successors, (320), 228 states have internal predecessors, (320), 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) [2024-11-10 03:01:27,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 320 transitions. [2024-11-10 03:01:27,526 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 320 transitions. Word has length 51 [2024-11-10 03:01:27,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:01:27,526 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 320 transitions. [2024-11-10 03:01:27,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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) [2024-11-10 03:01:27,527 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 320 transitions. [2024-11-10 03:01:27,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-10 03:01:27,531 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:01:27,531 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] [2024-11-10 03:01:27,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 03:01:27,531 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:01:27,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:01:27,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1040644240, now seen corresponding path program 1 times [2024-11-10 03:01:27,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:01:27,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081723922] [2024-11-10 03:01:27,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:01:27,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:01:27,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:01:27,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:01:27,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:01:27,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081723922] [2024-11-10 03:01:27,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081723922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 03:01:27,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 03:01:27,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 03:01:27,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202746329] [2024-11-10 03:01:27,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 03:01:27,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 03:01:27,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:01:27,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 03:01:27,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 03:01:27,636 INFO L87 Difference]: Start difference. First operand 229 states and 320 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-10 03:01:27,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:01:27,742 INFO L93 Difference]: Finished difference Result 431 states and 598 transitions. [2024-11-10 03:01:27,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 03:01:27,743 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 51 [2024-11-10 03:01:27,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:01:27,744 INFO L225 Difference]: With dead ends: 431 [2024-11-10 03:01:27,744 INFO L226 Difference]: Without dead ends: 268 [2024-11-10 03:01:27,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-10 03:01:27,745 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 378 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 03:01:27,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 442 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 03:01:27,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-10 03:01:27,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 219. [2024-11-10 03:01:27,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.3944954128440368) internal successors, (304), 218 states have internal predecessors, (304), 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) [2024-11-10 03:01:27,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 304 transitions. [2024-11-10 03:01:27,759 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 304 transitions. Word has length 51 [2024-11-10 03:01:27,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:01:27,760 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 304 transitions. [2024-11-10 03:01:27,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-10 03:01:27,760 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 304 transitions. [2024-11-10 03:01:27,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-10 03:01:27,761 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:01:27,761 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] [2024-11-10 03:01:27,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 03:01:27,761 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:01:27,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:01:27,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1912170684, now seen corresponding path program 1 times [2024-11-10 03:01:27,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:01:27,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524918806] [2024-11-10 03:01:27,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:01:27,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:01:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:01:27,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:01:27,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:01:27,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524918806] [2024-11-10 03:01:27,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524918806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 03:01:27,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 03:01:27,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 03:01:27,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968406654] [2024-11-10 03:01:27,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 03:01:27,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 03:01:27,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:01:27,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 03:01:27,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-10 03:01:27,870 INFO L87 Difference]: Start difference. First operand 219 states and 304 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2024-11-10 03:01:27,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:01:27,978 INFO L93 Difference]: Finished difference Result 419 states and 581 transitions. [2024-11-10 03:01:27,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 03:01:27,979 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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 52 [2024-11-10 03:01:27,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:01:27,980 INFO L225 Difference]: With dead ends: 419 [2024-11-10 03:01:27,980 INFO L226 Difference]: Without dead ends: 241 [2024-11-10 03:01:27,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-10 03:01:27,981 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 5 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 03:01:27,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 893 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 03:01:27,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2024-11-10 03:01:27,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2024-11-10 03:01:27,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 1.3833333333333333) internal successors, (332), 240 states have internal predecessors, (332), 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) [2024-11-10 03:01:27,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 332 transitions. [2024-11-10 03:01:27,985 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 332 transitions. Word has length 52 [2024-11-10 03:01:27,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:01:27,985 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 332 transitions. [2024-11-10 03:01:27,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2024-11-10 03:01:27,986 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 332 transitions. [2024-11-10 03:01:27,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-10 03:01:27,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:01:27,986 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] [2024-11-10 03:01:27,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 03:01:27,986 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:01:27,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:01:27,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1503832993, now seen corresponding path program 1 times [2024-11-10 03:01:27,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:01:27,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945351772] [2024-11-10 03:01:27,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:01:27,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:01:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:01:28,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:01:28,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:01:28,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945351772] [2024-11-10 03:01:28,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945351772] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 03:01:28,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 03:01:28,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 03:01:28,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178979380] [2024-11-10 03:01:28,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 03:01:28,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 03:01:28,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:01:28,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 03:01:28,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 03:01:28,069 INFO L87 Difference]: Start difference. First operand 241 states and 332 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2024-11-10 03:01:28,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:01:28,158 INFO L93 Difference]: Finished difference Result 447 states and 610 transitions. [2024-11-10 03:01:28,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 03:01:28,158 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 52 [2024-11-10 03:01:28,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:01:28,159 INFO L225 Difference]: With dead ends: 447 [2024-11-10 03:01:28,159 INFO L226 Difference]: Without dead ends: 264 [2024-11-10 03:01:28,160 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-10 03:01:28,160 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 322 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 03:01:28,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 442 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 03:01:28,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-10 03:01:28,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 231. [2024-11-10 03:01:28,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.373913043478261) internal successors, (316), 230 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) [2024-11-10 03:01:28,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 316 transitions. [2024-11-10 03:01:28,164 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 316 transitions. Word has length 52 [2024-11-10 03:01:28,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:01:28,164 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 316 transitions. [2024-11-10 03:01:28,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2024-11-10 03:01:28,164 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 316 transitions. [2024-11-10 03:01:28,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-10 03:01:28,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:01:28,165 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] [2024-11-10 03:01:28,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 03:01:28,165 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:01:28,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:01:28,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1697247334, now seen corresponding path program 1 times [2024-11-10 03:01:28,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:01:28,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682292162] [2024-11-10 03:01:28,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:01:28,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:01:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:01:28,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:01:28,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:01:28,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682292162] [2024-11-10 03:01:28,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682292162] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 03:01:28,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 03:01:28,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 03:01:28,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397872081] [2024-11-10 03:01:28,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 03:01:28,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 03:01:28,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:01:28,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 03:01:28,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 03:01:28,253 INFO L87 Difference]: Start difference. First operand 231 states and 316 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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) [2024-11-10 03:01:28,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:01:28,347 INFO L93 Difference]: Finished difference Result 462 states and 628 transitions. [2024-11-10 03:01:28,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 03:01:28,348 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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 53 [2024-11-10 03:01:28,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:01:28,348 INFO L225 Difference]: With dead ends: 462 [2024-11-10 03:01:28,349 INFO L226 Difference]: Without dead ends: 274 [2024-11-10 03:01:28,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-10 03:01:28,349 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 362 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 03:01:28,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 442 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 03:01:28,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-10 03:01:28,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 225. [2024-11-10 03:01:28,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.3660714285714286) internal successors, (306), 224 states have internal predecessors, (306), 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) [2024-11-10 03:01:28,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 306 transitions. [2024-11-10 03:01:28,353 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 306 transitions. Word has length 53 [2024-11-10 03:01:28,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:01:28,353 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 306 transitions. [2024-11-10 03:01:28,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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) [2024-11-10 03:01:28,354 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 306 transitions. [2024-11-10 03:01:28,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-10 03:01:28,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:01:28,354 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] [2024-11-10 03:01:28,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-10 03:01:28,354 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:01:28,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:01:28,355 INFO L85 PathProgramCache]: Analyzing trace with hash -996922325, now seen corresponding path program 1 times [2024-11-10 03:01:28,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:01:28,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226606184] [2024-11-10 03:01:28,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:01:28,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:01:28,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:01:28,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:01:28,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:01:28,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226606184] [2024-11-10 03:01:28,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226606184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 03:01:28,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 03:01:28,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 03:01:28,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224276091] [2024-11-10 03:01:28,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 03:01:28,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 03:01:28,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:01:28,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 03:01:28,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 03:01:28,430 INFO L87 Difference]: Start difference. First operand 225 states and 306 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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) [2024-11-10 03:01:28,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:01:28,497 INFO L93 Difference]: Finished difference Result 420 states and 570 transitions. [2024-11-10 03:01:28,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 03:01:28,498 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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 53 [2024-11-10 03:01:28,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:01:28,499 INFO L225 Difference]: With dead ends: 420 [2024-11-10 03:01:28,499 INFO L226 Difference]: Without dead ends: 237 [2024-11-10 03:01:28,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 03:01:28,500 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 4 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 03:01:28,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 611 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 03:01:28,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-11-10 03:01:28,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2024-11-10 03:01:28,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.3559322033898304) internal successors, (320), 236 states have internal predecessors, (320), 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) [2024-11-10 03:01:28,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 320 transitions. [2024-11-10 03:01:28,504 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 320 transitions. Word has length 53 [2024-11-10 03:01:28,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:01:28,504 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 320 transitions. [2024-11-10 03:01:28,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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) [2024-11-10 03:01:28,504 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 320 transitions. [2024-11-10 03:01:28,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-10 03:01:28,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:01:28,505 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] [2024-11-10 03:01:28,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-10 03:01:28,505 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:01:28,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:01:28,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1410127962, now seen corresponding path program 1 times [2024-11-10 03:01:28,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:01:28,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128860985] [2024-11-10 03:01:28,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:01:28,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:01:28,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:01:28,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:01:28,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:01:28,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128860985] [2024-11-10 03:01:28,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128860985] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 03:01:28,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 03:01:28,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 03:01:28,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965710214] [2024-11-10 03:01:28,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 03:01:28,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 03:01:28,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:01:28,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 03:01:28,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 03:01:28,593 INFO L87 Difference]: Start difference. First operand 237 states and 320 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-11-10 03:01:28,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:01:28,686 INFO L93 Difference]: Finished difference Result 439 states and 593 transitions. [2024-11-10 03:01:28,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 03:01:28,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 54 [2024-11-10 03:01:28,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:01:28,688 INFO L225 Difference]: With dead ends: 439 [2024-11-10 03:01:28,688 INFO L226 Difference]: Without dead ends: 238 [2024-11-10 03:01:28,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-10 03:01:28,689 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 290 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 03:01:28,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 442 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 03:01:28,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-11-10 03:01:28,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 213. [2024-11-10 03:01:28,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.3679245283018868) internal successors, (290), 212 states have internal predecessors, (290), 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) [2024-11-10 03:01:28,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 290 transitions. [2024-11-10 03:01:28,694 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 290 transitions. Word has length 54 [2024-11-10 03:01:28,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:01:28,694 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 290 transitions. [2024-11-10 03:01:28,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-11-10 03:01:28,695 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 290 transitions. [2024-11-10 03:01:28,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-10 03:01:28,697 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:01:28,697 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 03:01:28,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-10 03:01:28,698 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:01:28,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:01:28,698 INFO L85 PathProgramCache]: Analyzing trace with hash -497484998, now seen corresponding path program 1 times [2024-11-10 03:01:28,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:01:28,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981347735] [2024-11-10 03:01:28,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:01:28,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:01:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:01:30,369 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:01:30,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:01:30,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981347735] [2024-11-10 03:01:30,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981347735] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 03:01:30,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365301418] [2024-11-10 03:01:30,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:01:30,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 03:01:30,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 03:01:30,372 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) [2024-11-10 03:01:30,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 03:01:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:01:30,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-11-10 03:01:30,665 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 03:01:31,981 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:01:31,982 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 03:01:33,749 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:01:33,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365301418] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 03:01:33,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 03:01:33,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18, 21] total 49 [2024-11-10 03:01:33,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658094541] [2024-11-10 03:01:33,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 03:01:33,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-10 03:01:33,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:01:33,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-10 03:01:33,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=2052, Unknown=0, NotChecked=0, Total=2352 [2024-11-10 03:01:33,753 INFO L87 Difference]: Start difference. First operand 213 states and 290 transitions. Second operand has 49 states, 49 states have (on average 5.755102040816326) internal successors, (282), 49 states have internal predecessors, (282), 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) [2024-11-10 03:01:36,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:01:36,268 INFO L93 Difference]: Finished difference Result 631 states and 862 transitions. [2024-11-10 03:01:36,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-10 03:01:36,268 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 5.755102040816326) internal successors, (282), 49 states have internal predecessors, (282), 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 100 [2024-11-10 03:01:36,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:01:36,270 INFO L225 Difference]: With dead ends: 631 [2024-11-10 03:01:36,270 INFO L226 Difference]: Without dead ends: 468 [2024-11-10 03:01:36,272 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2599 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1081, Invalid=7849, Unknown=0, NotChecked=0, Total=8930 [2024-11-10 03:01:36,272 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 1497 mSDsluCounter, 1979 mSDsCounter, 0 mSdLazyCounter, 2441 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 2075 SdHoareTripleChecker+Invalid, 2479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-10 03:01:36,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1497 Valid, 2075 Invalid, 2479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2441 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-10 03:01:36,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2024-11-10 03:01:36,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 360. [2024-11-10 03:01:36,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.350974930362117) internal successors, (485), 359 states have internal predecessors, (485), 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) [2024-11-10 03:01:36,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 485 transitions. [2024-11-10 03:01:36,278 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 485 transitions. Word has length 100 [2024-11-10 03:01:36,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:01:36,278 INFO L471 AbstractCegarLoop]: Abstraction has 360 states and 485 transitions. [2024-11-10 03:01:36,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 5.755102040816326) internal successors, (282), 49 states have internal predecessors, (282), 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) [2024-11-10 03:01:36,278 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 485 transitions. [2024-11-10 03:01:36,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-10 03:01:36,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:01:36,279 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 03:01:36,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-10 03:01:36,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-10 03:01:36,484 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:01:36,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:01:36,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1758401306, now seen corresponding path program 1 times [2024-11-10 03:01:36,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:01:36,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788792515] [2024-11-10 03:01:36,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:01:36,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:01:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:01:37,480 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:01:37,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:01:37,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788792515] [2024-11-10 03:01:37,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788792515] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 03:01:37,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884664543] [2024-11-10 03:01:37,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:01:37,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 03:01:37,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 03:01:37,482 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) [2024-11-10 03:01:37,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 03:01:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:01:37,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-10 03:01:37,732 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 03:01:38,253 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:01:38,253 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 03:01:39,278 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:01:39,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884664543] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 03:01:39,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 03:01:39,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 14] total 36 [2024-11-10 03:01:39,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15878654] [2024-11-10 03:01:39,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 03:01:39,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-10 03:01:39,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:01:39,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-10 03:01:39,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1128, Unknown=0, NotChecked=0, Total=1260 [2024-11-10 03:01:39,281 INFO L87 Difference]: Start difference. First operand 360 states and 485 transitions. Second operand has 36 states, 36 states have (on average 8.027777777777779) internal successors, (289), 36 states have internal predecessors, (289), 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) [2024-11-10 03:01:42,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:01:42,374 INFO L93 Difference]: Finished difference Result 1860 states and 2543 transitions. [2024-11-10 03:01:42,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-10 03:01:42,374 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 8.027777777777779) internal successors, (289), 36 states have internal predecessors, (289), 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 101 [2024-11-10 03:01:42,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:01:42,378 INFO L225 Difference]: With dead ends: 1860 [2024-11-10 03:01:42,378 INFO L226 Difference]: Without dead ends: 1582 [2024-11-10 03:01:42,380 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 183 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2628 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1076, Invalid=8626, Unknown=0, NotChecked=0, Total=9702 [2024-11-10 03:01:42,381 INFO L432 NwaCegarLoop]: 237 mSDtfsCounter, 1262 mSDsluCounter, 5235 mSDsCounter, 0 mSdLazyCounter, 4397 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1262 SdHoareTripleChecker+Valid, 5472 SdHoareTripleChecker+Invalid, 4416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 4397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-10 03:01:42,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1262 Valid, 5472 Invalid, 4416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 4397 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-10 03:01:42,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2024-11-10 03:01:42,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 537. [2024-11-10 03:01:42,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 536 states have (on average 1.3582089552238805) internal successors, (728), 536 states have internal predecessors, (728), 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) [2024-11-10 03:01:42,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 728 transitions. [2024-11-10 03:01:42,391 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 728 transitions. Word has length 101 [2024-11-10 03:01:42,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:01:42,391 INFO L471 AbstractCegarLoop]: Abstraction has 537 states and 728 transitions. [2024-11-10 03:01:42,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 8.027777777777779) internal successors, (289), 36 states have internal predecessors, (289), 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) [2024-11-10 03:01:42,391 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 728 transitions. [2024-11-10 03:01:42,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-10 03:01:42,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:01:42,392 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 03:01:42,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 03:01:42,593 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,SelfDestructingSolverStorable15 [2024-11-10 03:01:42,593 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:01:42,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:01:42,594 INFO L85 PathProgramCache]: Analyzing trace with hash -721507209, now seen corresponding path program 1 times [2024-11-10 03:01:42,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:01:42,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532135057] [2024-11-10 03:01:42,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:01:42,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:01:42,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:01:43,682 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:01:43,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:01:43,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532135057] [2024-11-10 03:01:43,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532135057] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 03:01:43,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123275924] [2024-11-10 03:01:43,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:01:43,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 03:01:43,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 03:01:43,684 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) [2024-11-10 03:01:43,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 03:01:43,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:01:43,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-11-10 03:01:43,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 03:01:44,718 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:01:44,718 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 03:01:45,947 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:01:45,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123275924] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 03:01:45,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 03:01:45,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 18] total 41 [2024-11-10 03:01:45,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650703929] [2024-11-10 03:01:45,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 03:01:45,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-10 03:01:45,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:01:45,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-10 03:01:45,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1451, Unknown=0, NotChecked=0, Total=1640 [2024-11-10 03:01:45,949 INFO L87 Difference]: Start difference. First operand 537 states and 728 transitions. Second operand has 41 states, 41 states have (on average 6.829268292682927) internal successors, (280), 41 states have internal predecessors, (280), 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) [2024-11-10 03:01:47,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:01:47,379 INFO L93 Difference]: Finished difference Result 1510 states and 2047 transitions. [2024-11-10 03:01:47,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-10 03:01:47,380 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 6.829268292682927) internal successors, (280), 41 states have internal predecessors, (280), 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 101 [2024-11-10 03:01:47,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:01:47,382 INFO L225 Difference]: With dead ends: 1510 [2024-11-10 03:01:47,382 INFO L226 Difference]: Without dead ends: 1035 [2024-11-10 03:01:47,384 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1334 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=643, Invalid=4327, Unknown=0, NotChecked=0, Total=4970 [2024-11-10 03:01:47,385 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 1655 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 2125 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1655 SdHoareTripleChecker+Valid, 2015 SdHoareTripleChecker+Invalid, 2147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-10 03:01:47,385 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1655 Valid, 2015 Invalid, 2147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2125 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-10 03:01:47,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2024-11-10 03:01:47,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 833. [2024-11-10 03:01:47,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 832 states have (on average 1.3461538461538463) internal successors, (1120), 832 states have internal predecessors, (1120), 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) [2024-11-10 03:01:47,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1120 transitions. [2024-11-10 03:01:47,396 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1120 transitions. Word has length 101 [2024-11-10 03:01:47,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:01:47,396 INFO L471 AbstractCegarLoop]: Abstraction has 833 states and 1120 transitions. [2024-11-10 03:01:47,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 6.829268292682927) internal successors, (280), 41 states have internal predecessors, (280), 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) [2024-11-10 03:01:47,396 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1120 transitions. [2024-11-10 03:01:47,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-10 03:01:47,397 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:01:47,397 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 03:01:47,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-10 03:01:47,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 03:01:47,598 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:01:47,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:01:47,599 INFO L85 PathProgramCache]: Analyzing trace with hash -239563982, now seen corresponding path program 1 times [2024-11-10 03:01:47,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:01:47,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628267089] [2024-11-10 03:01:47,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:01:47,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:01:47,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:01:48,753 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:01:48,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:01:48,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628267089] [2024-11-10 03:01:48,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628267089] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 03:01:48,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026572681] [2024-11-10 03:01:48,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:01:48,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 03:01:48,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 03:01:48,756 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) [2024-11-10 03:01:48,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 03:01:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:01:49,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 133 conjuncts are in the unsatisfiable core [2024-11-10 03:01:49,052 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 03:01:50,224 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:01:50,225 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 03:01:52,192 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:01:52,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026572681] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 03:01:52,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 03:01:52,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 18, 21] total 47 [2024-11-10 03:01:52,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389971493] [2024-11-10 03:01:52,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 03:01:52,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-10 03:01:52,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:01:52,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-10 03:01:52,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=1872, Unknown=0, NotChecked=0, Total=2162 [2024-11-10 03:01:52,194 INFO L87 Difference]: Start difference. First operand 833 states and 1120 transitions. Second operand has 47 states, 47 states have (on average 6.127659574468085) internal successors, (288), 47 states have internal predecessors, (288), 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) [2024-11-10 03:01:56,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:01:56,044 INFO L93 Difference]: Finished difference Result 2284 states and 3099 transitions. [2024-11-10 03:01:56,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-11-10 03:01:56,045 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 6.127659574468085) internal successors, (288), 47 states have internal predecessors, (288), 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 102 [2024-11-10 03:01:56,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:01:56,048 INFO L225 Difference]: With dead ends: 2284 [2024-11-10 03:01:56,048 INFO L226 Difference]: Without dead ends: 1545 [2024-11-10 03:01:56,051 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4235 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1626, Invalid=12180, Unknown=0, NotChecked=0, Total=13806 [2024-11-10 03:01:56,052 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 1672 mSDsluCounter, 2509 mSDsCounter, 0 mSdLazyCounter, 3107 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1672 SdHoareTripleChecker+Valid, 2606 SdHoareTripleChecker+Invalid, 3146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-10 03:01:56,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1672 Valid, 2606 Invalid, 3146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 3107 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-10 03:01:56,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1545 states. [2024-11-10 03:01:56,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1545 to 652. [2024-11-10 03:01:56,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 651 states have (on average 1.3533026113671276) internal successors, (881), 651 states have internal predecessors, (881), 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) [2024-11-10 03:01:56,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 881 transitions. [2024-11-10 03:01:56,061 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 881 transitions. Word has length 102 [2024-11-10 03:01:56,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:01:56,062 INFO L471 AbstractCegarLoop]: Abstraction has 652 states and 881 transitions. [2024-11-10 03:01:56,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 6.127659574468085) internal successors, (288), 47 states have internal predecessors, (288), 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) [2024-11-10 03:01:56,062 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 881 transitions. [2024-11-10 03:01:56,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-10 03:01:56,063 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:01:56,063 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 03:01:56,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-10 03:01:56,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-10 03:01:56,263 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:01:56,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:01:56,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1953711120, now seen corresponding path program 1 times [2024-11-10 03:01:56,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:01:56,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093423640] [2024-11-10 03:01:56,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:01:56,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:01:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:01:57,271 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:01:57,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:01:57,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093423640] [2024-11-10 03:01:57,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093423640] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 03:01:57,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98715325] [2024-11-10 03:01:57,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:01:57,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 03:01:57,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 03:01:57,273 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) [2024-11-10 03:01:57,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 03:01:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:01:57,539 INFO L255 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-11-10 03:01:57,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 03:01:58,356 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:01:58,356 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 03:01:59,690 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:01:59,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98715325] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 03:01:59,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 03:01:59,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 22] total 52 [2024-11-10 03:01:59,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465163972] [2024-11-10 03:01:59,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 03:01:59,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-10 03:01:59,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:01:59,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-10 03:01:59,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=2402, Unknown=0, NotChecked=0, Total=2652 [2024-11-10 03:01:59,693 INFO L87 Difference]: Start difference. First operand 652 states and 881 transitions. Second operand has 52 states, 52 states have (on average 5.519230769230769) internal successors, (287), 52 states have internal predecessors, (287), 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) [2024-11-10 03:02:05,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:02:05,585 INFO L93 Difference]: Finished difference Result 2842 states and 3895 transitions. [2024-11-10 03:02:05,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2024-11-10 03:02:05,585 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.519230769230769) internal successors, (287), 52 states have internal predecessors, (287), 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 102 [2024-11-10 03:02:05,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:02:05,590 INFO L225 Difference]: With dead ends: 2842 [2024-11-10 03:02:05,590 INFO L226 Difference]: Without dead ends: 2243 [2024-11-10 03:02:05,595 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8613 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2611, Invalid=27145, Unknown=0, NotChecked=0, Total=29756 [2024-11-10 03:02:05,595 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 2567 mSDsluCounter, 5206 mSDsCounter, 0 mSdLazyCounter, 6129 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2567 SdHoareTripleChecker+Valid, 5371 SdHoareTripleChecker+Invalid, 6176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 6129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-10 03:02:05,595 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2567 Valid, 5371 Invalid, 6176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 6129 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-10 03:02:05,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2243 states. [2024-11-10 03:02:05,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2243 to 902. [2024-11-10 03:02:05,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 901 states have (on average 1.3540510543840178) internal successors, (1220), 901 states have internal predecessors, (1220), 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) [2024-11-10 03:02:05,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1220 transitions. [2024-11-10 03:02:05,614 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1220 transitions. Word has length 102 [2024-11-10 03:02:05,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:02:05,614 INFO L471 AbstractCegarLoop]: Abstraction has 902 states and 1220 transitions. [2024-11-10 03:02:05,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.519230769230769) internal successors, (287), 52 states have internal predecessors, (287), 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) [2024-11-10 03:02:05,615 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1220 transitions. [2024-11-10 03:02:05,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-10 03:02:05,616 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:02:05,616 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 03:02:05,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 03:02:05,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 03:02:05,817 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:02:05,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:02:05,818 INFO L85 PathProgramCache]: Analyzing trace with hash -255864799, now seen corresponding path program 1 times [2024-11-10 03:02:05,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:02:05,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768623951] [2024-11-10 03:02:05,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:02:05,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:02:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:02:06,789 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:02:06,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:02:06,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768623951] [2024-11-10 03:02:06,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768623951] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 03:02:06,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344336543] [2024-11-10 03:02:06,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:02:06,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 03:02:06,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 03:02:06,791 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) [2024-11-10 03:02:06,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 03:02:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:02:07,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-11-10 03:02:07,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 03:02:07,728 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:02:07,728 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 03:02:09,153 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:02:09,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344336543] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 03:02:09,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 03:02:09,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 20] total 43 [2024-11-10 03:02:09,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60076803] [2024-11-10 03:02:09,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 03:02:09,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-10 03:02:09,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:02:09,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-10 03:02:09,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1624, Unknown=0, NotChecked=0, Total=1806 [2024-11-10 03:02:09,155 INFO L87 Difference]: Start difference. First operand 902 states and 1220 transitions. Second operand has 43 states, 43 states have (on average 6.4186046511627906) internal successors, (276), 43 states have internal predecessors, (276), 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) [2024-11-10 03:02:11,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:02:11,117 INFO L93 Difference]: Finished difference Result 2185 states and 2924 transitions. [2024-11-10 03:02:11,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-10 03:02:11,118 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 6.4186046511627906) internal successors, (276), 43 states have internal predecessors, (276), 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 103 [2024-11-10 03:02:11,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:02:11,121 INFO L225 Difference]: With dead ends: 2185 [2024-11-10 03:02:11,121 INFO L226 Difference]: Without dead ends: 1414 [2024-11-10 03:02:11,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1694 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=668, Invalid=5494, Unknown=0, NotChecked=0, Total=6162 [2024-11-10 03:02:11,123 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 1408 mSDsluCounter, 2720 mSDsCounter, 0 mSdLazyCounter, 2611 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1408 SdHoareTripleChecker+Valid, 2848 SdHoareTripleChecker+Invalid, 2628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-10 03:02:11,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1408 Valid, 2848 Invalid, 2628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2611 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-10 03:02:11,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2024-11-10 03:02:11,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1077. [2024-11-10 03:02:11,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1077 states, 1076 states have (on average 1.3355018587360594) internal successors, (1437), 1076 states have internal predecessors, (1437), 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) [2024-11-10 03:02:11,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1437 transitions. [2024-11-10 03:02:11,136 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1437 transitions. Word has length 103 [2024-11-10 03:02:11,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:02:11,137 INFO L471 AbstractCegarLoop]: Abstraction has 1077 states and 1437 transitions. [2024-11-10 03:02:11,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 6.4186046511627906) internal successors, (276), 43 states have internal predecessors, (276), 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) [2024-11-10 03:02:11,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1437 transitions. [2024-11-10 03:02:11,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-10 03:02:11,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:02:11,138 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] [2024-11-10 03:02:11,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 03:02:11,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 03:02:11,339 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:02:11,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:02:11,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1499737153, now seen corresponding path program 1 times [2024-11-10 03:02:11,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:02:11,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129429504] [2024-11-10 03:02:11,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:02:11,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:02:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:02:11,937 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:02:11,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:02:11,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129429504] [2024-11-10 03:02:11,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129429504] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 03:02:11,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009344282] [2024-11-10 03:02:11,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:02:11,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 03:02:11,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 03:02:11,938 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) [2024-11-10 03:02:11,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 03:02:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:02:12,204 INFO L255 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-10 03:02:12,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 03:02:12,532 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:02:12,532 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 03:02:13,309 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:02:13,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009344282] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 03:02:13,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 03:02:13,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 14] total 31 [2024-11-10 03:02:13,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441579336] [2024-11-10 03:02:13,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 03:02:13,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-10 03:02:13,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:02:13,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-10 03:02:13,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=820, Unknown=0, NotChecked=0, Total=930 [2024-11-10 03:02:13,311 INFO L87 Difference]: Start difference. First operand 1077 states and 1437 transitions. Second operand has 31 states, 31 states have (on average 9.0) internal successors, (279), 31 states have internal predecessors, (279), 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) [2024-11-10 03:02:14,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:02:14,564 INFO L93 Difference]: Finished difference Result 2319 states and 3094 transitions. [2024-11-10 03:02:14,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-10 03:02:14,565 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 9.0) internal successors, (279), 31 states have internal predecessors, (279), 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 104 [2024-11-10 03:02:14,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:02:14,568 INFO L225 Difference]: With dead ends: 2319 [2024-11-10 03:02:14,568 INFO L226 Difference]: Without dead ends: 1493 [2024-11-10 03:02:14,569 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 190 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=446, Invalid=2746, Unknown=0, NotChecked=0, Total=3192 [2024-11-10 03:02:14,570 INFO L432 NwaCegarLoop]: 226 mSDtfsCounter, 826 mSDsluCounter, 3282 mSDsCounter, 0 mSdLazyCounter, 2589 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 3508 SdHoareTripleChecker+Invalid, 2600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-10 03:02:14,570 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 3508 Invalid, 2600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2589 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-10 03:02:14,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1493 states. [2024-11-10 03:02:14,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1493 to 1177. [2024-11-10 03:02:14,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1176 states have (on average 1.3350340136054422) internal successors, (1570), 1176 states have internal predecessors, (1570), 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) [2024-11-10 03:02:14,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1570 transitions. [2024-11-10 03:02:14,584 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1570 transitions. Word has length 104 [2024-11-10 03:02:14,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:02:14,584 INFO L471 AbstractCegarLoop]: Abstraction has 1177 states and 1570 transitions. [2024-11-10 03:02:14,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 9.0) internal successors, (279), 31 states have internal predecessors, (279), 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) [2024-11-10 03:02:14,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1570 transitions. [2024-11-10 03:02:14,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-10 03:02:14,585 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:02:14,585 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] [2024-11-10 03:02:14,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 03:02:14,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 03:02:14,786 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:02:14,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:02:14,787 INFO L85 PathProgramCache]: Analyzing trace with hash -227369687, now seen corresponding path program 1 times [2024-11-10 03:02:14,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:02:14,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717955297] [2024-11-10 03:02:14,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:02:14,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:02:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:02:15,594 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:02:15,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:02:15,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717955297] [2024-11-10 03:02:15,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717955297] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 03:02:15,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949337903] [2024-11-10 03:02:15,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:02:15,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 03:02:15,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 03:02:15,596 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 03:02:15,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 03:02:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:02:15,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 150 conjuncts are in the unsatisfiable core [2024-11-10 03:02:15,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 03:02:17,087 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:02:17,088 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 03:02:19,960 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:02:19,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949337903] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 03:02:19,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 03:02:19,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 23, 28] total 57 [2024-11-10 03:02:19,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513125931] [2024-11-10 03:02:19,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 03:02:19,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-10 03:02:19,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:02:19,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-10 03:02:19,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=2788, Unknown=0, NotChecked=0, Total=3192 [2024-11-10 03:02:19,963 INFO L87 Difference]: Start difference. First operand 1177 states and 1570 transitions. Second operand has 57 states, 57 states have (on average 4.947368421052632) internal successors, (282), 57 states have internal predecessors, (282), 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) [2024-11-10 03:02:24,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:02:24,105 INFO L93 Difference]: Finished difference Result 2593 states and 3465 transitions. [2024-11-10 03:02:24,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-10 03:02:24,106 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 4.947368421052632) internal successors, (282), 57 states have internal predecessors, (282), 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 105 [2024-11-10 03:02:24,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:02:24,109 INFO L225 Difference]: With dead ends: 2593 [2024-11-10 03:02:24,109 INFO L226 Difference]: Without dead ends: 1526 [2024-11-10 03:02:24,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3960 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1462, Invalid=12110, Unknown=0, NotChecked=0, Total=13572 [2024-11-10 03:02:24,111 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 1459 mSDsluCounter, 3445 mSDsCounter, 0 mSdLazyCounter, 3885 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1459 SdHoareTripleChecker+Valid, 3567 SdHoareTripleChecker+Invalid, 3920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-10 03:02:24,111 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1459 Valid, 3567 Invalid, 3920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3885 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-10 03:02:24,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1526 states. [2024-11-10 03:02:24,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1526 to 1037. [2024-11-10 03:02:24,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1037 states, 1036 states have (on average 1.3445945945945945) internal successors, (1393), 1036 states have internal predecessors, (1393), 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) [2024-11-10 03:02:24,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1393 transitions. [2024-11-10 03:02:24,123 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1393 transitions. Word has length 105 [2024-11-10 03:02:24,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:02:24,124 INFO L471 AbstractCegarLoop]: Abstraction has 1037 states and 1393 transitions. [2024-11-10 03:02:24,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 4.947368421052632) internal successors, (282), 57 states have internal predecessors, (282), 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) [2024-11-10 03:02:24,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1393 transitions. [2024-11-10 03:02:24,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-10 03:02:24,126 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:02:24,126 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 03:02:24,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-10 03:02:24,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-10 03:02:24,327 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:02:24,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:02:24,327 INFO L85 PathProgramCache]: Analyzing trace with hash 166404026, now seen corresponding path program 2 times [2024-11-10 03:02:24,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:02:24,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539744640] [2024-11-10 03:02:24,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:02:24,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:02:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:02:27,734 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 16 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:02:27,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:02:27,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539744640] [2024-11-10 03:02:27,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539744640] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 03:02:27,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733490039] [2024-11-10 03:02:27,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 03:02:27,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 03:02:27,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 03:02:27,735 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 03:02:27,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 03:02:28,379 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 03:02:28,379 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 03:02:28,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 1189 conjuncts, 223 conjuncts are in the unsatisfiable core [2024-11-10 03:02:28,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 03:02:30,218 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 16 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:02:30,218 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 03:02:33,475 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 6 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:02:33,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733490039] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 03:02:33,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 03:02:33,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 28, 27] total 73 [2024-11-10 03:02:33,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153638528] [2024-11-10 03:02:33,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 03:02:33,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-10 03:02:33,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 03:02:33,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-10 03:02:33,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=4928, Unknown=0, NotChecked=0, Total=5256 [2024-11-10 03:02:33,478 INFO L87 Difference]: Start difference. First operand 1037 states and 1393 transitions. Second operand has 73 states, 73 states have (on average 5.986301369863014) internal successors, (437), 73 states have internal predecessors, (437), 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) [2024-11-10 03:02:43,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 03:02:43,945 INFO L93 Difference]: Finished difference Result 9100 states and 12232 transitions. [2024-11-10 03:02:43,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2024-11-10 03:02:43,946 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 5.986301369863014) internal successors, (437), 73 states have internal predecessors, (437), 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 151 [2024-11-10 03:02:43,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 03:02:43,961 INFO L225 Difference]: With dead ends: 9100 [2024-11-10 03:02:43,961 INFO L226 Difference]: Without dead ends: 7927 [2024-11-10 03:02:43,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 250 SyntacticMatches, 2 SemanticMatches, 278 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28035 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=6047, Invalid=72073, Unknown=0, NotChecked=0, Total=78120 [2024-11-10 03:02:43,967 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 6271 mSDsluCounter, 3447 mSDsCounter, 0 mSdLazyCounter, 4454 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6271 SdHoareTripleChecker+Valid, 3532 SdHoareTripleChecker+Invalid, 4534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 4454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-10 03:02:43,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6271 Valid, 3532 Invalid, 4534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 4454 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-10 03:02:43,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7927 states. [2024-11-10 03:02:44,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7927 to 2340. [2024-11-10 03:02:44,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2340 states, 2339 states have (on average 1.337751175716118) internal successors, (3129), 2339 states have internal predecessors, (3129), 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) [2024-11-10 03:02:44,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2340 states to 2340 states and 3129 transitions. [2024-11-10 03:02:44,010 INFO L78 Accepts]: Start accepts. Automaton has 2340 states and 3129 transitions. Word has length 151 [2024-11-10 03:02:44,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 03:02:44,011 INFO L471 AbstractCegarLoop]: Abstraction has 2340 states and 3129 transitions. [2024-11-10 03:02:44,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 5.986301369863014) internal successors, (437), 73 states have internal predecessors, (437), 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) [2024-11-10 03:02:44,011 INFO L276 IsEmpty]: Start isEmpty. Operand 2340 states and 3129 transitions. [2024-11-10 03:02:44,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-10 03:02:44,014 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 03:02:44,014 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 03:02:44,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-10 03:02:44,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 03:02:44,215 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 03:02:44,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 03:02:44,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1615783945, now seen corresponding path program 2 times [2024-11-10 03:02:44,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 03:02:44,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912719953] [2024-11-10 03:02:44,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 03:02:44,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 03:02:44,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 03:02:47,032 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 24 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 03:02:47,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 03:02:47,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912719953] [2024-11-10 03:02:47,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912719953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 03:02:47,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222873799] [2024-11-10 03:02:47,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 03:02:47,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 03:02:47,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 03:02:47,033 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 03:02:47,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process