./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem11_label23.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem11_label23.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f869ff34b8d1fc9233da1bce651f8bc007d942cb0a36d4a975409aebb2d888b1 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 10:21:39,667 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 10:21:39,731 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 10:21:39,743 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 10:21:39,744 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 10:21:39,759 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 10:21:39,760 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 10:21:39,762 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 10:21:39,763 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 10:21:39,764 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 10:21:39,764 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 10:21:39,764 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 10:21:39,765 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 10:21:39,765 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 10:21:39,766 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 10:21:39,767 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 10:21:39,767 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 10:21:39,767 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 10:21:39,767 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 10:21:39,768 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 10:21:39,768 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 10:21:39,768 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 10:21:39,772 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 10:21:39,772 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 10:21:39,772 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 10:21:39,772 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 10:21:39,772 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 10:21:39,773 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 10:21:39,773 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 10:21:39,773 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 10:21:39,773 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 10:21:39,773 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 10:21:39,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:21:39,774 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 10:21:39,774 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 10:21:39,774 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 10:21:39,774 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 10:21:39,774 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 10:21:39,774 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 10:21:39,774 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 10:21:39,775 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 10:21:39,777 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 10:21:39,777 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f869ff34b8d1fc9233da1bce651f8bc007d942cb0a36d4a975409aebb2d888b1 [2024-11-18 10:21:39,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 10:21:39,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 10:21:40,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 10:21:40,003 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 10:21:40,003 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 10:21:40,004 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem11_label23.c [2024-11-18 10:21:41,268 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 10:21:41,510 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 10:21:41,515 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label23.c [2024-11-18 10:21:41,534 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/415cdce83/c536299a70034f07bc44adcec9dc6792/FLAG2ba626932 [2024-11-18 10:21:41,831 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/415cdce83/c536299a70034f07bc44adcec9dc6792 [2024-11-18 10:21:41,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 10:21:41,834 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 10:21:41,837 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 10:21:41,837 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 10:21:41,841 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 10:21:41,841 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:21:41" (1/1) ... [2024-11-18 10:21:41,842 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cde54b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:41, skipping insertion in model container [2024-11-18 10:21:41,842 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:21:41" (1/1) ... [2024-11-18 10:21:41,887 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 10:21:42,099 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label23.c[9364,9377] [2024-11-18 10:21:42,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:21:42,255 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 10:21:42,287 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label23.c[9364,9377] [2024-11-18 10:21:42,425 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:21:42,442 INFO L204 MainTranslator]: Completed translation [2024-11-18 10:21:42,443 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:42 WrapperNode [2024-11-18 10:21:42,443 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 10:21:42,444 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 10:21:42,445 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 10:21:42,445 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 10:21:42,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:42" (1/1) ... [2024-11-18 10:21:42,475 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:42" (1/1) ... [2024-11-18 10:21:42,546 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1000 [2024-11-18 10:21:42,548 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 10:21:42,549 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 10:21:42,549 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 10:21:42,549 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 10:21:42,558 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:42" (1/1) ... [2024-11-18 10:21:42,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:42" (1/1) ... [2024-11-18 10:21:42,570 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:42" (1/1) ... [2024-11-18 10:21:42,617 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 10:21:42,617 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:42" (1/1) ... [2024-11-18 10:21:42,617 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:42" (1/1) ... [2024-11-18 10:21:42,649 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:42" (1/1) ... [2024-11-18 10:21:42,658 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:42" (1/1) ... [2024-11-18 10:21:42,669 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:42" (1/1) ... [2024-11-18 10:21:42,676 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:42" (1/1) ... [2024-11-18 10:21:42,687 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 10:21:42,689 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 10:21:42,689 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 10:21:42,689 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 10:21:42,690 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:42" (1/1) ... [2024-11-18 10:21:42,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:21:42,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:21:42,714 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 10:21:42,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 10:21:42,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 10:21:42,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 10:21:42,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 10:21:42,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 10:21:42,802 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 10:21:42,804 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 10:21:43,922 INFO L? ?]: Removed 129 outVars from TransFormulas that were not future-live. [2024-11-18 10:21:43,922 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 10:21:43,940 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 10:21:43,942 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 10:21:43,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:21:43 BoogieIcfgContainer [2024-11-18 10:21:43,943 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 10:21:43,944 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 10:21:43,945 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 10:21:43,948 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 10:21:43,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:21:41" (1/3) ... [2024-11-18 10:21:43,949 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@695e1561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:21:43, skipping insertion in model container [2024-11-18 10:21:43,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:42" (2/3) ... [2024-11-18 10:21:43,949 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@695e1561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:21:43, skipping insertion in model container [2024-11-18 10:21:43,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:21:43" (3/3) ... [2024-11-18 10:21:43,950 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label23.c [2024-11-18 10:21:43,963 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 10:21:43,964 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 10:21:44,028 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 10:21:44,034 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;@68587eb9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 10:21:44,034 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 10:21:44,039 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 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) [2024-11-18 10:21:44,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 10:21:44,049 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:21:44,050 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:21:44,051 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:21:44,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:21:44,056 INFO L85 PathProgramCache]: Analyzing trace with hash 962891993, now seen corresponding path program 1 times [2024-11-18 10:21:44,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:21:44,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454688625] [2024-11-18 10:21:44,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:21:44,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:21:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:21:44,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:21:44,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:21:44,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454688625] [2024-11-18 10:21:44,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454688625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:21:44,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:21:44,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:21:44,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183142923] [2024-11-18 10:21:44,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:21:44,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:21:44,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:21:44,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:21:44,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:21:44,391 INFO L87 Difference]: Start difference. First operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 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) [2024-11-18 10:21:45,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:21:45,305 INFO L93 Difference]: Finished difference Result 769 states and 1360 transitions. [2024-11-18 10:21:45,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:21:45,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 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 65 [2024-11-18 10:21:45,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:21:45,327 INFO L225 Difference]: With dead ends: 769 [2024-11-18 10:21:45,327 INFO L226 Difference]: Without dead ends: 422 [2024-11-18 10:21:45,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:21:45,335 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 175 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:21:45,337 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 163 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 10:21:45,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-11-18 10:21:45,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 412. [2024-11-18 10:21:45,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 411 states have (on average 1.5231143552311435) internal successors, (626), 411 states have internal predecessors, (626), 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) [2024-11-18 10:21:45,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 626 transitions. [2024-11-18 10:21:45,402 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 626 transitions. Word has length 65 [2024-11-18 10:21:45,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:21:45,402 INFO L471 AbstractCegarLoop]: Abstraction has 412 states and 626 transitions. [2024-11-18 10:21:45,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 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) [2024-11-18 10:21:45,403 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 626 transitions. [2024-11-18 10:21:45,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-18 10:21:45,407 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:21:45,407 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:21:45,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 10:21:45,408 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:21:45,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:21:45,409 INFO L85 PathProgramCache]: Analyzing trace with hash -566112933, now seen corresponding path program 1 times [2024-11-18 10:21:45,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:21:45,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618918651] [2024-11-18 10:21:45,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:21:45,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:21:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:21:45,566 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:21:45,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:21:45,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618918651] [2024-11-18 10:21:45,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618918651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:21:45,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:21:45,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:21:45,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532272671] [2024-11-18 10:21:45,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:21:45,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:21:45,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:21:45,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:21:45,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:21:45,570 INFO L87 Difference]: Start difference. First operand 412 states and 626 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 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) [2024-11-18 10:21:46,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:21:46,210 INFO L93 Difference]: Finished difference Result 1194 states and 1821 transitions. [2024-11-18 10:21:46,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:21:46,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 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 131 [2024-11-18 10:21:46,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:21:46,214 INFO L225 Difference]: With dead ends: 1194 [2024-11-18 10:21:46,215 INFO L226 Difference]: Without dead ends: 784 [2024-11-18 10:21:46,217 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:21:46,219 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 175 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:21:46,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 154 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 10:21:46,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2024-11-18 10:21:46,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 784. [2024-11-18 10:21:46,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.3742017879948913) internal successors, (1076), 783 states have internal predecessors, (1076), 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) [2024-11-18 10:21:46,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1076 transitions. [2024-11-18 10:21:46,243 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1076 transitions. Word has length 131 [2024-11-18 10:21:46,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:21:46,243 INFO L471 AbstractCegarLoop]: Abstraction has 784 states and 1076 transitions. [2024-11-18 10:21:46,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 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) [2024-11-18 10:21:46,243 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1076 transitions. [2024-11-18 10:21:46,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-18 10:21:46,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:21:46,245 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:21:46,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 10:21:46,246 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:21:46,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:21:46,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1935044965, now seen corresponding path program 1 times [2024-11-18 10:21:46,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:21:46,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692004057] [2024-11-18 10:21:46,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:21:46,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:21:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:21:46,532 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:21:46,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:21:46,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692004057] [2024-11-18 10:21:46,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692004057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:21:46,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:21:46,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:21:46,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651108624] [2024-11-18 10:21:46,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:21:46,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:21:46,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:21:46,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:21:46,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:21:46,535 INFO L87 Difference]: Start difference. First operand 784 states and 1076 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 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) [2024-11-18 10:21:47,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:21:47,131 INFO L93 Difference]: Finished difference Result 1936 states and 2599 transitions. [2024-11-18 10:21:47,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:21:47,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 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 135 [2024-11-18 10:21:47,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:21:47,135 INFO L225 Difference]: With dead ends: 1936 [2024-11-18 10:21:47,135 INFO L226 Difference]: Without dead ends: 1154 [2024-11-18 10:21:47,136 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:21:47,137 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 119 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:21:47,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 190 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 10:21:47,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2024-11-18 10:21:47,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1153. [2024-11-18 10:21:47,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 1152 states have (on average 1.2699652777777777) internal successors, (1463), 1152 states have internal predecessors, (1463), 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) [2024-11-18 10:21:47,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1463 transitions. [2024-11-18 10:21:47,164 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1463 transitions. Word has length 135 [2024-11-18 10:21:47,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:21:47,165 INFO L471 AbstractCegarLoop]: Abstraction has 1153 states and 1463 transitions. [2024-11-18 10:21:47,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 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) [2024-11-18 10:21:47,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1463 transitions. [2024-11-18 10:21:47,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-18 10:21:47,167 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:21:47,167 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:21:47,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 10:21:47,168 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:21:47,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:21:47,169 INFO L85 PathProgramCache]: Analyzing trace with hash -444441444, now seen corresponding path program 1 times [2024-11-18 10:21:47,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:21:47,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199351462] [2024-11-18 10:21:47,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:21:47,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:21:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:21:47,415 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:21:47,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:21:47,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199351462] [2024-11-18 10:21:47,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199351462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:21:47,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:21:47,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:21:47,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630011142] [2024-11-18 10:21:47,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:21:47,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:21:47,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:21:47,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:21:47,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:21:47,419 INFO L87 Difference]: Start difference. First operand 1153 states and 1463 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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) [2024-11-18 10:21:48,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:21:48,030 INFO L93 Difference]: Finished difference Result 2679 states and 3481 transitions. [2024-11-18 10:21:48,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:21:48,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 177 [2024-11-18 10:21:48,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:21:48,035 INFO L225 Difference]: With dead ends: 2679 [2024-11-18 10:21:48,036 INFO L226 Difference]: Without dead ends: 1712 [2024-11-18 10:21:48,037 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:21:48,037 INFO L432 NwaCegarLoop]: 312 mSDtfsCounter, 141 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:21:48,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 332 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 10:21:48,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1712 states. [2024-11-18 10:21:48,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1712 to 1521. [2024-11-18 10:21:48,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1520 states have (on average 1.255921052631579) internal successors, (1909), 1520 states have internal predecessors, (1909), 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) [2024-11-18 10:21:48,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 1909 transitions. [2024-11-18 10:21:48,057 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 1909 transitions. Word has length 177 [2024-11-18 10:21:48,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:21:48,058 INFO L471 AbstractCegarLoop]: Abstraction has 1521 states and 1909 transitions. [2024-11-18 10:21:48,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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) [2024-11-18 10:21:48,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 1909 transitions. [2024-11-18 10:21:48,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-11-18 10:21:48,060 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:21:48,061 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:21:48,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 10:21:48,061 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:21:48,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:21:48,062 INFO L85 PathProgramCache]: Analyzing trace with hash 522290920, now seen corresponding path program 1 times [2024-11-18 10:21:48,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:21:48,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672360922] [2024-11-18 10:21:48,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:21:48,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:21:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:21:48,276 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-18 10:21:48,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:21:48,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672360922] [2024-11-18 10:21:48,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672360922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:21:48,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:21:48,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:21:48,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477069456] [2024-11-18 10:21:48,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:21:48,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:21:48,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:21:48,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:21:48,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:21:48,281 INFO L87 Difference]: Start difference. First operand 1521 states and 1909 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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) [2024-11-18 10:21:48,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:21:48,967 INFO L93 Difference]: Finished difference Result 3597 states and 4559 transitions. [2024-11-18 10:21:48,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:21:48,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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 247 [2024-11-18 10:21:48,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:21:48,973 INFO L225 Difference]: With dead ends: 3597 [2024-11-18 10:21:48,973 INFO L226 Difference]: Without dead ends: 2078 [2024-11-18 10:21:48,975 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:21:48,975 INFO L432 NwaCegarLoop]: 370 mSDtfsCounter, 132 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:21:48,976 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 391 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 10:21:48,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2078 states. [2024-11-18 10:21:48,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2078 to 1889. [2024-11-18 10:21:48,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1889 states, 1888 states have (on average 1.2473516949152543) internal successors, (2355), 1888 states have internal predecessors, (2355), 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) [2024-11-18 10:21:48,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 2355 transitions. [2024-11-18 10:21:48,999 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 2355 transitions. Word has length 247 [2024-11-18 10:21:49,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:21:49,000 INFO L471 AbstractCegarLoop]: Abstraction has 1889 states and 2355 transitions. [2024-11-18 10:21:49,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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) [2024-11-18 10:21:49,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 2355 transitions. [2024-11-18 10:21:49,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-11-18 10:21:49,004 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:21:49,004 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:21:49,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 10:21:49,004 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:21:49,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:21:49,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1609653245, now seen corresponding path program 1 times [2024-11-18 10:21:49,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:21:49,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582930866] [2024-11-18 10:21:49,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:21:49,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:21:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:21:49,274 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 221 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:21:49,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:21:49,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582930866] [2024-11-18 10:21:49,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582930866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:21:49,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:21:49,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:21:49,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124760496] [2024-11-18 10:21:49,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:21:49,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:21:49,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:21:49,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:21:49,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:21:49,278 INFO L87 Difference]: Start difference. First operand 1889 states and 2355 transitions. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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) [2024-11-18 10:21:49,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:21:49,965 INFO L93 Difference]: Finished difference Result 5075 states and 6326 transitions. [2024-11-18 10:21:49,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:21:49,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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 274 [2024-11-18 10:21:49,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:21:49,977 INFO L225 Difference]: With dead ends: 5075 [2024-11-18 10:21:49,977 INFO L226 Difference]: Without dead ends: 3188 [2024-11-18 10:21:49,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:21:49,981 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 123 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:21:49,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 140 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 10:21:49,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3188 states. [2024-11-18 10:21:50,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3188 to 3186. [2024-11-18 10:21:50,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3186 states, 3185 states have (on average 1.2160125588697017) internal successors, (3873), 3185 states have internal predecessors, (3873), 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) [2024-11-18 10:21:50,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 3873 transitions. [2024-11-18 10:21:50,024 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 3873 transitions. Word has length 274 [2024-11-18 10:21:50,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:21:50,024 INFO L471 AbstractCegarLoop]: Abstraction has 3186 states and 3873 transitions. [2024-11-18 10:21:50,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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) [2024-11-18 10:21:50,025 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 3873 transitions. [2024-11-18 10:21:50,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-11-18 10:21:50,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:21:50,028 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:21:50,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 10:21:50,029 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:21:50,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:21:50,029 INFO L85 PathProgramCache]: Analyzing trace with hash 328502846, now seen corresponding path program 1 times [2024-11-18 10:21:50,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:21:50,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610870608] [2024-11-18 10:21:50,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:21:50,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:21:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:21:50,467 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:21:50,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:21:50,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610870608] [2024-11-18 10:21:50,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610870608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:21:50,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:21:50,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:21:50,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641082661] [2024-11-18 10:21:50,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:21:50,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:21:50,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:21:50,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:21:50,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:21:50,469 INFO L87 Difference]: Start difference. First operand 3186 states and 3873 transitions. Second operand has 4 states, 4 states have (on average 70.0) internal successors, (280), 3 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) [2024-11-18 10:21:51,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:21:51,599 INFO L93 Difference]: Finished difference Result 10433 states and 12706 transitions. [2024-11-18 10:21:51,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:21:51,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 70.0) internal successors, (280), 3 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 280 [2024-11-18 10:21:51,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:21:51,619 INFO L225 Difference]: With dead ends: 10433 [2024-11-18 10:21:51,620 INFO L226 Difference]: Without dead ends: 7249 [2024-11-18 10:21:51,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:21:51,626 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 228 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 10:21:51,626 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 147 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 10:21:51,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7249 states. [2024-11-18 10:21:51,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7249 to 7242. [2024-11-18 10:21:51,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7242 states, 7241 states have (on average 1.1959674078165998) internal successors, (8660), 7241 states have internal predecessors, (8660), 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) [2024-11-18 10:21:51,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7242 states to 7242 states and 8660 transitions. [2024-11-18 10:21:51,776 INFO L78 Accepts]: Start accepts. Automaton has 7242 states and 8660 transitions. Word has length 280 [2024-11-18 10:21:51,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:21:51,776 INFO L471 AbstractCegarLoop]: Abstraction has 7242 states and 8660 transitions. [2024-11-18 10:21:51,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.0) internal successors, (280), 3 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) [2024-11-18 10:21:51,776 INFO L276 IsEmpty]: Start isEmpty. Operand 7242 states and 8660 transitions. [2024-11-18 10:21:51,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2024-11-18 10:21:51,780 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:21:51,780 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:21:51,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 10:21:51,781 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:21:51,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:21:51,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1580395159, now seen corresponding path program 1 times [2024-11-18 10:21:51,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:21:51,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542969619] [2024-11-18 10:21:51,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:21:51,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:21:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:21:52,471 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 157 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:21:52,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:21:52,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542969619] [2024-11-18 10:21:52,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542969619] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:21:52,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137185370] [2024-11-18 10:21:52,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:21:52,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:21:52,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:21:52,486 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:21:52,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 10:21:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:21:52,603 INFO L255 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 10:21:52,617 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:21:53,028 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-18 10:21:53,029 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:21:53,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137185370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:21:53,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:21:53,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-18 10:21:53,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470335866] [2024-11-18 10:21:53,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:21:53,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:21:53,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:21:53,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:21:53,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-18 10:21:53,032 INFO L87 Difference]: Start difference. First operand 7242 states and 8660 transitions. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 3 states have internal predecessors, (179), 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) [2024-11-18 10:21:53,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:21:53,996 INFO L93 Difference]: Finished difference Result 19470 states and 23084 transitions. [2024-11-18 10:21:53,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:21:53,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 3 states have internal predecessors, (179), 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 283 [2024-11-18 10:21:53,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:21:54,031 INFO L225 Difference]: With dead ends: 19470 [2024-11-18 10:21:54,032 INFO L226 Difference]: Without dead ends: 12598 [2024-11-18 10:21:54,041 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-18 10:21:54,042 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 258 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:21:54,044 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 178 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 10:21:54,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12598 states. [2024-11-18 10:21:54,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12598 to 10010. [2024-11-18 10:21:54,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10010 states, 10009 states have (on average 1.1815366170446597) internal successors, (11826), 10009 states have internal predecessors, (11826), 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) [2024-11-18 10:21:54,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10010 states to 10010 states and 11826 transitions. [2024-11-18 10:21:54,217 INFO L78 Accepts]: Start accepts. Automaton has 10010 states and 11826 transitions. Word has length 283 [2024-11-18 10:21:54,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:21:54,218 INFO L471 AbstractCegarLoop]: Abstraction has 10010 states and 11826 transitions. [2024-11-18 10:21:54,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 3 states have internal predecessors, (179), 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) [2024-11-18 10:21:54,218 INFO L276 IsEmpty]: Start isEmpty. Operand 10010 states and 11826 transitions. [2024-11-18 10:21:54,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-11-18 10:21:54,222 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:21:54,223 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 10:21:54,238 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 10:21:54,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:21:54,424 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:21:54,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:21:54,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1984989751, now seen corresponding path program 1 times [2024-11-18 10:21:54,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:21:54,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61398632] [2024-11-18 10:21:54,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:21:54,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:21:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:21:54,556 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-18 10:21:54,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:21:54,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61398632] [2024-11-18 10:21:54,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61398632] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:21:54,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:21:54,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:21:54,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450024591] [2024-11-18 10:21:54,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:21:54,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:21:54,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:21:54,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:21:54,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:21:54,559 INFO L87 Difference]: Start difference. First operand 10010 states and 11826 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 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) [2024-11-18 10:21:55,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:21:55,127 INFO L93 Difference]: Finished difference Result 19648 states and 23262 transitions. [2024-11-18 10:21:55,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:21:55,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 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) Word has length 295 [2024-11-18 10:21:55,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:21:55,146 INFO L225 Difference]: With dead ends: 19648 [2024-11-18 10:21:55,147 INFO L226 Difference]: Without dead ends: 10008 [2024-11-18 10:21:55,155 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:21:55,157 INFO L432 NwaCegarLoop]: 284 mSDtfsCounter, 170 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:21:55,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 304 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 10:21:55,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10008 states. [2024-11-18 10:21:55,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10008 to 10008. [2024-11-18 10:21:55,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10008 states, 10007 states have (on average 1.1504946537423804) internal successors, (11513), 10007 states have internal predecessors, (11513), 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) [2024-11-18 10:21:55,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10008 states to 10008 states and 11513 transitions. [2024-11-18 10:21:55,309 INFO L78 Accepts]: Start accepts. Automaton has 10008 states and 11513 transitions. Word has length 295 [2024-11-18 10:21:55,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:21:55,310 INFO L471 AbstractCegarLoop]: Abstraction has 10008 states and 11513 transitions. [2024-11-18 10:21:55,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 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) [2024-11-18 10:21:55,310 INFO L276 IsEmpty]: Start isEmpty. Operand 10008 states and 11513 transitions. [2024-11-18 10:21:55,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2024-11-18 10:21:55,316 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:21:55,317 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 10:21:55,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 10:21:55,317 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:21:55,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:21:55,318 INFO L85 PathProgramCache]: Analyzing trace with hash 286412562, now seen corresponding path program 1 times [2024-11-18 10:21:55,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:21:55,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372484225] [2024-11-18 10:21:55,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:21:55,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:21:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:21:55,709 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 125 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:21:55,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:21:55,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372484225] [2024-11-18 10:21:55,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372484225] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:21:55,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463236333] [2024-11-18 10:21:55,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:21:55,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:21:55,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:21:55,712 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:21:55,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 10:21:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:21:55,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 10:21:55,814 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:21:56,127 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:21:56,127 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:21:56,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463236333] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:21:56,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:21:56,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-18 10:21:56,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211195271] [2024-11-18 10:21:56,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:21:56,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:21:56,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:21:56,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:21:56,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:21:56,132 INFO L87 Difference]: Start difference. First operand 10008 states and 11513 transitions. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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) [2024-11-18 10:21:56,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:21:56,693 INFO L93 Difference]: Finished difference Result 20954 states and 24251 transitions. [2024-11-18 10:21:56,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:21:56,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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 298 [2024-11-18 10:21:56,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:21:56,711 INFO L225 Difference]: With dead ends: 20954 [2024-11-18 10:21:56,712 INFO L226 Difference]: Without dead ends: 11316 [2024-11-18 10:21:56,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:21:56,722 INFO L432 NwaCegarLoop]: 305 mSDtfsCounter, 99 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:21:56,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 326 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 10:21:56,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11316 states. [2024-11-18 10:21:56,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11316 to 11307. [2024-11-18 10:21:56,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11307 states, 11306 states have (on average 1.151689368476915) internal successors, (13021), 11306 states have internal predecessors, (13021), 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) [2024-11-18 10:21:56,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11307 states to 11307 states and 13021 transitions. [2024-11-18 10:21:56,840 INFO L78 Accepts]: Start accepts. Automaton has 11307 states and 13021 transitions. Word has length 298 [2024-11-18 10:21:56,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:21:56,840 INFO L471 AbstractCegarLoop]: Abstraction has 11307 states and 13021 transitions. [2024-11-18 10:21:56,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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) [2024-11-18 10:21:56,841 INFO L276 IsEmpty]: Start isEmpty. Operand 11307 states and 13021 transitions. [2024-11-18 10:21:56,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-11-18 10:21:56,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:21:56,846 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 10:21:56,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 10:21:57,050 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,SelfDestructingSolverStorable9 [2024-11-18 10:21:57,052 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:21:57,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:21:57,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1382301666, now seen corresponding path program 1 times [2024-11-18 10:21:57,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:21:57,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333339823] [2024-11-18 10:21:57,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:21:57,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:21:57,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:21:57,374 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-18 10:21:57,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:21:57,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333339823] [2024-11-18 10:21:57,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333339823] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:21:57,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536486791] [2024-11-18 10:21:57,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:21:57,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:21:57,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:21:57,377 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:21:57,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 10:21:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:21:57,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 10:21:57,484 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:21:57,738 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-18 10:21:57,738 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:21:59,139 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-18 10:21:59,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536486791] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 10:21:59,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 10:21:59,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-18 10:21:59,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389923419] [2024-11-18 10:21:59,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:21:59,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:21:59,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:21:59,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:21:59,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:21:59,140 INFO L87 Difference]: Start difference. First operand 11307 states and 13021 transitions. Second operand has 4 states, 4 states have (on average 48.25) internal successors, (193), 3 states have internal predecessors, (193), 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) [2024-11-18 10:21:59,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:21:59,997 INFO L93 Difference]: Finished difference Result 18343 states and 21259 transitions. [2024-11-18 10:21:59,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:21:59,997 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 3 states have internal predecessors, (193), 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 303 [2024-11-18 10:21:59,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:00,025 INFO L225 Difference]: With dead ends: 18343 [2024-11-18 10:22:00,025 INFO L226 Difference]: Without dead ends: 18341 [2024-11-18 10:22:00,032 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 607 GetRequests, 603 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:22:00,032 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 263 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:00,033 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 206 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 10:22:00,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18341 states. [2024-11-18 10:22:00,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18341 to 12779. [2024-11-18 10:22:00,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12779 states, 12778 states have (on average 1.1523712631084677) internal successors, (14725), 12778 states have internal predecessors, (14725), 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) [2024-11-18 10:22:00,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12779 states to 12779 states and 14725 transitions. [2024-11-18 10:22:00,276 INFO L78 Accepts]: Start accepts. Automaton has 12779 states and 14725 transitions. Word has length 303 [2024-11-18 10:22:00,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:00,276 INFO L471 AbstractCegarLoop]: Abstraction has 12779 states and 14725 transitions. [2024-11-18 10:22:00,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 3 states have internal predecessors, (193), 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) [2024-11-18 10:22:00,277 INFO L276 IsEmpty]: Start isEmpty. Operand 12779 states and 14725 transitions. [2024-11-18 10:22:00,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2024-11-18 10:22:00,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:22:00,284 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 10:22:00,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 10:22:00,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:22:00,485 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:22:00,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:22:00,485 INFO L85 PathProgramCache]: Analyzing trace with hash -807971748, now seen corresponding path program 1 times [2024-11-18 10:22:00,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:22:00,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161302304] [2024-11-18 10:22:00,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:00,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:22:00,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:00,812 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 55 proven. 70 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-18 10:22:00,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:00,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161302304] [2024-11-18 10:22:00,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161302304] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:22:00,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505042886] [2024-11-18 10:22:00,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:00,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:22:00,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:22:00,816 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:22:00,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 10:22:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:00,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 10:22:00,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:22:00,991 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-18 10:22:00,991 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:22:00,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505042886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:22:00,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:22:00,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-18 10:22:00,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816279486] [2024-11-18 10:22:00,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:22:00,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:22:00,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:00,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:22:00,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:22:00,993 INFO L87 Difference]: Start difference. First operand 12779 states and 14725 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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) [2024-11-18 10:22:01,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:01,629 INFO L93 Difference]: Finished difference Result 28131 states and 32517 transitions. [2024-11-18 10:22:01,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:22:01,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 327 [2024-11-18 10:22:01,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:01,653 INFO L225 Difference]: With dead ends: 28131 [2024-11-18 10:22:01,654 INFO L226 Difference]: Without dead ends: 15722 [2024-11-18 10:22:01,666 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:22:01,666 INFO L432 NwaCegarLoop]: 346 mSDtfsCounter, 133 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:01,667 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 369 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 10:22:01,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15722 states. [2024-11-18 10:22:01,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15722 to 14618. [2024-11-18 10:22:01,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14618 states, 14617 states have (on average 1.1441472258329342) internal successors, (16724), 14617 states have internal predecessors, (16724), 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) [2024-11-18 10:22:01,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14618 states to 14618 states and 16724 transitions. [2024-11-18 10:22:01,823 INFO L78 Accepts]: Start accepts. Automaton has 14618 states and 16724 transitions. Word has length 327 [2024-11-18 10:22:01,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:01,823 INFO L471 AbstractCegarLoop]: Abstraction has 14618 states and 16724 transitions. [2024-11-18 10:22:01,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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) [2024-11-18 10:22:01,823 INFO L276 IsEmpty]: Start isEmpty. Operand 14618 states and 16724 transitions. [2024-11-18 10:22:01,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2024-11-18 10:22:01,830 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:22:01,830 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:22:01,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 10:22:02,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:22:02,032 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:22:02,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:22:02,032 INFO L85 PathProgramCache]: Analyzing trace with hash 332634922, now seen corresponding path program 1 times [2024-11-18 10:22:02,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:22:02,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595089428] [2024-11-18 10:22:02,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:02,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:22:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:02,731 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 281 proven. 27 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2024-11-18 10:22:02,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:02,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595089428] [2024-11-18 10:22:02,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595089428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:22:02,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413469330] [2024-11-18 10:22:02,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:02,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:22:02,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:22:02,734 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:22:02,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 10:22:02,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:02,844 INFO L255 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 10:22:02,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:22:03,051 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 362 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-18 10:22:03,052 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:22:03,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413469330] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:22:03,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:22:03,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-18 10:22:03,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502328132] [2024-11-18 10:22:03,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:22:03,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:22:03,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:03,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:22:03,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:22:03,054 INFO L87 Difference]: Start difference. First operand 14618 states and 16724 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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) [2024-11-18 10:22:03,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:03,553 INFO L93 Difference]: Finished difference Result 30531 states and 34952 transitions. [2024-11-18 10:22:03,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:22:03,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 352 [2024-11-18 10:22:03,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:03,576 INFO L225 Difference]: With dead ends: 30531 [2024-11-18 10:22:03,577 INFO L226 Difference]: Without dead ends: 16283 [2024-11-18 10:22:03,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:22:03,589 INFO L432 NwaCegarLoop]: 348 mSDtfsCounter, 84 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:03,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 369 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 10:22:03,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16283 states. [2024-11-18 10:22:03,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16283 to 15360. [2024-11-18 10:22:03,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15360 states, 15359 states have (on average 1.1405039390585325) internal successors, (17517), 15359 states have internal predecessors, (17517), 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) [2024-11-18 10:22:03,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15360 states to 15360 states and 17517 transitions. [2024-11-18 10:22:03,745 INFO L78 Accepts]: Start accepts. Automaton has 15360 states and 17517 transitions. Word has length 352 [2024-11-18 10:22:03,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:03,746 INFO L471 AbstractCegarLoop]: Abstraction has 15360 states and 17517 transitions. [2024-11-18 10:22:03,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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) [2024-11-18 10:22:03,746 INFO L276 IsEmpty]: Start isEmpty. Operand 15360 states and 17517 transitions. [2024-11-18 10:22:03,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2024-11-18 10:22:03,754 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:22:03,754 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 10:22:03,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 10:22:03,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-18 10:22:03,955 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:22:03,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:22:03,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1737705753, now seen corresponding path program 1 times [2024-11-18 10:22:03,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:22:03,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586641476] [2024-11-18 10:22:03,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:03,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:22:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:04,721 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 208 proven. 168 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-18 10:22:04,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:04,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586641476] [2024-11-18 10:22:04,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586641476] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:22:04,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264442445] [2024-11-18 10:22:04,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:04,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:22:04,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:22:04,723 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:22:04,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 10:22:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:04,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 10:22:04,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:22:05,065 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 383 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-11-18 10:22:05,065 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:22:05,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264442445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:22:05,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:22:05,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-18 10:22:05,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404362122] [2024-11-18 10:22:05,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:22:05,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:22:05,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:05,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:22:05,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:22:05,067 INFO L87 Difference]: Start difference. First operand 15360 states and 17517 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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) [2024-11-18 10:22:05,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:05,522 INFO L93 Difference]: Finished difference Result 30720 states and 35028 transitions. [2024-11-18 10:22:05,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:22:05,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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 373 [2024-11-18 10:22:05,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:05,540 INFO L225 Difference]: With dead ends: 30720 [2024-11-18 10:22:05,540 INFO L226 Difference]: Without dead ends: 15362 [2024-11-18 10:22:05,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:22:05,552 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 91 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:05,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 170 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 10:22:05,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15362 states. [2024-11-18 10:22:05,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15362 to 14256. [2024-11-18 10:22:05,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14256 states, 14255 states have (on average 1.1349701858996843) internal successors, (16179), 14255 states have internal predecessors, (16179), 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) [2024-11-18 10:22:05,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14256 states to 14256 states and 16179 transitions. [2024-11-18 10:22:05,741 INFO L78 Accepts]: Start accepts. Automaton has 14256 states and 16179 transitions. Word has length 373 [2024-11-18 10:22:05,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:05,741 INFO L471 AbstractCegarLoop]: Abstraction has 14256 states and 16179 transitions. [2024-11-18 10:22:05,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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) [2024-11-18 10:22:05,742 INFO L276 IsEmpty]: Start isEmpty. Operand 14256 states and 16179 transitions. [2024-11-18 10:22:05,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2024-11-18 10:22:05,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:22:05,751 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:22:05,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 10:22:05,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:22:05,952 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:22:05,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:22:05,953 INFO L85 PathProgramCache]: Analyzing trace with hash -764587049, now seen corresponding path program 1 times [2024-11-18 10:22:05,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:22:05,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966515228] [2024-11-18 10:22:05,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:05,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:22:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:06,276 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 188 proven. 211 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-18 10:22:06,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:06,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966515228] [2024-11-18 10:22:06,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966515228] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:22:06,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992853177] [2024-11-18 10:22:06,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:06,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:22:06,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:22:06,278 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) [2024-11-18 10:22:06,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 10:22:06,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:06,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 10:22:06,391 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:22:06,608 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 399 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-18 10:22:06,608 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:22:06,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992853177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:22:06,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:22:06,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-18 10:22:06,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839772937] [2024-11-18 10:22:06,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:22:06,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:22:06,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:06,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:22:06,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:22:06,610 INFO L87 Difference]: Start difference. First operand 14256 states and 16179 transitions. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 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) [2024-11-18 10:22:07,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:07,142 INFO L93 Difference]: Finished difference Result 31482 states and 35888 transitions. [2024-11-18 10:22:07,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:22:07,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 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 410 [2024-11-18 10:22:07,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:07,161 INFO L225 Difference]: With dead ends: 31482 [2024-11-18 10:22:07,162 INFO L226 Difference]: Without dead ends: 17596 [2024-11-18 10:22:07,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:22:07,170 INFO L432 NwaCegarLoop]: 285 mSDtfsCounter, 105 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:07,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 306 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 10:22:07,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17596 states. [2024-11-18 10:22:07,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17596 to 17219. [2024-11-18 10:22:07,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17219 states, 17218 states have (on average 1.1388082239516786) internal successors, (19608), 17218 states have internal predecessors, (19608), 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) [2024-11-18 10:22:07,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17219 states to 17219 states and 19608 transitions. [2024-11-18 10:22:07,339 INFO L78 Accepts]: Start accepts. Automaton has 17219 states and 19608 transitions. Word has length 410 [2024-11-18 10:22:07,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:07,339 INFO L471 AbstractCegarLoop]: Abstraction has 17219 states and 19608 transitions. [2024-11-18 10:22:07,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 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) [2024-11-18 10:22:07,340 INFO L276 IsEmpty]: Start isEmpty. Operand 17219 states and 19608 transitions. [2024-11-18 10:22:07,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2024-11-18 10:22:07,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:22:07,353 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:22:07,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-18 10:22:07,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:22:07,554 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:22:07,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:22:07,554 INFO L85 PathProgramCache]: Analyzing trace with hash 890840300, now seen corresponding path program 1 times [2024-11-18 10:22:07,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:22:07,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570887888] [2024-11-18 10:22:07,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:07,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:22:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:07,909 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 188 proven. 229 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-18 10:22:07,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:07,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570887888] [2024-11-18 10:22:07,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570887888] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:22:07,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118556283] [2024-11-18 10:22:07,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:07,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:22:07,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:22:07,911 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) [2024-11-18 10:22:07,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 10:22:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:08,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-18 10:22:08,034 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:22:09,113 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 293 proven. 230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:22:09,114 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:22:11,285 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 293 proven. 230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:22:11,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118556283] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 10:22:11,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 10:22:11,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 11 [2024-11-18 10:22:11,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914725331] [2024-11-18 10:22:11,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 10:22:11,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 10:22:11,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:11,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 10:22:11,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-11-18 10:22:11,289 INFO L87 Difference]: Start difference. First operand 17219 states and 19608 transitions. Second operand has 12 states, 12 states have (on average 83.33333333333333) internal successors, (1000), 11 states have internal predecessors, (1000), 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) [2024-11-18 10:22:16,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:16,553 INFO L93 Difference]: Finished difference Result 47376 states and 53733 transitions. [2024-11-18 10:22:16,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-18 10:22:16,553 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 83.33333333333333) internal successors, (1000), 11 states have internal predecessors, (1000), 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 432 [2024-11-18 10:22:16,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:16,588 INFO L225 Difference]: With dead ends: 47376 [2024-11-18 10:22:16,588 INFO L226 Difference]: Without dead ends: 29975 [2024-11-18 10:22:16,603 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 892 GetRequests, 856 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=395, Invalid=1011, Unknown=0, NotChecked=0, Total=1406 [2024-11-18 10:22:16,604 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 3013 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 7374 mSolverCounterSat, 1041 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3013 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 8415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1041 IncrementalHoareTripleChecker+Valid, 7374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:16,604 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3013 Valid, 194 Invalid, 8415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1041 Valid, 7374 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-18 10:22:16,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29975 states. [2024-11-18 10:22:16,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29975 to 18668. [2024-11-18 10:22:16,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18668 states, 18667 states have (on average 1.1046767022017463) internal successors, (20621), 18667 states have internal predecessors, (20621), 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) [2024-11-18 10:22:16,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18668 states to 18668 states and 20621 transitions. [2024-11-18 10:22:16,978 INFO L78 Accepts]: Start accepts. Automaton has 18668 states and 20621 transitions. Word has length 432 [2024-11-18 10:22:16,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:16,978 INFO L471 AbstractCegarLoop]: Abstraction has 18668 states and 20621 transitions. [2024-11-18 10:22:16,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 83.33333333333333) internal successors, (1000), 11 states have internal predecessors, (1000), 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) [2024-11-18 10:22:16,979 INFO L276 IsEmpty]: Start isEmpty. Operand 18668 states and 20621 transitions. [2024-11-18 10:22:16,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2024-11-18 10:22:16,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:22:16,989 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:22:17,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 10:22:17,189 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,SelfDestructingSolverStorable15 [2024-11-18 10:22:17,190 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:22:17,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:22:17,191 INFO L85 PathProgramCache]: Analyzing trace with hash -482780604, now seen corresponding path program 1 times [2024-11-18 10:22:17,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:22:17,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817042186] [2024-11-18 10:22:17,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:17,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:22:17,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:17,893 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 525 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:22:17,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:17,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817042186] [2024-11-18 10:22:17,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817042186] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:22:17,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213851053] [2024-11-18 10:22:17,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:17,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:22:17,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:22:17,895 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) [2024-11-18 10:22:17,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 10:22:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:18,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 10:22:18,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:22:18,352 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 426 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-18 10:22:18,354 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:22:18,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213851053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:22:18,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:22:18,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-18 10:22:18,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885490770] [2024-11-18 10:22:18,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:22:18,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:22:18,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:18,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:22:18,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-18 10:22:18,356 INFO L87 Difference]: Start difference. First operand 18668 states and 20621 transitions. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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) [2024-11-18 10:22:18,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:18,855 INFO L93 Difference]: Finished difference Result 37337 states and 41264 transitions. [2024-11-18 10:22:18,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:22:18,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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 448 [2024-11-18 10:22:18,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:18,875 INFO L225 Difference]: With dead ends: 37337 [2024-11-18 10:22:18,876 INFO L226 Difference]: Without dead ends: 19039 [2024-11-18 10:22:18,887 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-18 10:22:18,888 INFO L432 NwaCegarLoop]: 334 mSDtfsCounter, 44 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:18,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 355 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 10:22:18,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19039 states. [2024-11-18 10:22:19,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19039 to 19036. [2024-11-18 10:22:19,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19036 states, 19035 states have (on average 1.1016023115313895) internal successors, (20969), 19035 states have internal predecessors, (20969), 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) [2024-11-18 10:22:19,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19036 states to 19036 states and 20969 transitions. [2024-11-18 10:22:19,058 INFO L78 Accepts]: Start accepts. Automaton has 19036 states and 20969 transitions. Word has length 448 [2024-11-18 10:22:19,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:19,058 INFO L471 AbstractCegarLoop]: Abstraction has 19036 states and 20969 transitions. [2024-11-18 10:22:19,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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) [2024-11-18 10:22:19,059 INFO L276 IsEmpty]: Start isEmpty. Operand 19036 states and 20969 transitions. [2024-11-18 10:22:19,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2024-11-18 10:22:19,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:22:19,073 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:22:19,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-18 10:22:19,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-18 10:22:19,274 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:22:19,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:22:19,275 INFO L85 PathProgramCache]: Analyzing trace with hash 743274997, now seen corresponding path program 1 times [2024-11-18 10:22:19,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:22:19,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43752487] [2024-11-18 10:22:19,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:19,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:22:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:19,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 314 proven. 516 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2024-11-18 10:22:19,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:19,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43752487] [2024-11-18 10:22:19,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43752487] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:22:19,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244943565] [2024-11-18 10:22:19,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:19,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:22:19,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:22:19,798 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) [2024-11-18 10:22:19,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 10:22:19,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:19,979 INFO L255 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 10:22:19,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:22:20,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 701 proven. 0 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2024-11-18 10:22:20,242 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:22:20,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244943565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:22:20,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:22:20,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-18 10:22:20,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508923663] [2024-11-18 10:22:20,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:22:20,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:22:20,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:20,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:22:20,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 10:22:20,244 INFO L87 Difference]: Start difference. First operand 19036 states and 20969 transitions. Second operand has 4 states, 4 states have (on average 81.75) internal successors, (327), 3 states have internal predecessors, (327), 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) [2024-11-18 10:22:21,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:21,075 INFO L93 Difference]: Finished difference Result 38624 states and 42525 transitions. [2024-11-18 10:22:21,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:22:21,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 3 states have internal predecessors, (327), 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 569 [2024-11-18 10:22:21,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:21,099 INFO L225 Difference]: With dead ends: 38624 [2024-11-18 10:22:21,099 INFO L226 Difference]: Without dead ends: 19774 [2024-11-18 10:22:21,111 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 567 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 10:22:21,111 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 203 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:21,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 127 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 10:22:21,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19774 states. [2024-11-18 10:22:21,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19774 to 19588. [2024-11-18 10:22:21,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19588 states, 19587 states have (on average 1.099606882115689) internal successors, (21538), 19587 states have internal predecessors, (21538), 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) [2024-11-18 10:22:21,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19588 states to 19588 states and 21538 transitions. [2024-11-18 10:22:21,284 INFO L78 Accepts]: Start accepts. Automaton has 19588 states and 21538 transitions. Word has length 569 [2024-11-18 10:22:21,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:21,284 INFO L471 AbstractCegarLoop]: Abstraction has 19588 states and 21538 transitions. [2024-11-18 10:22:21,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 3 states have internal predecessors, (327), 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) [2024-11-18 10:22:21,284 INFO L276 IsEmpty]: Start isEmpty. Operand 19588 states and 21538 transitions. [2024-11-18 10:22:21,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2024-11-18 10:22:21,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:22:21,297 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:22:21,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-18 10:22:21,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-18 10:22:21,498 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:22:21,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:22:21,499 INFO L85 PathProgramCache]: Analyzing trace with hash -245713591, now seen corresponding path program 1 times [2024-11-18 10:22:21,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:22:21,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746735277] [2024-11-18 10:22:21,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:21,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:22:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:21,949 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 251 proven. 406 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-18 10:22:21,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:21,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746735277] [2024-11-18 10:22:21,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746735277] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:22:21,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306486821] [2024-11-18 10:22:21,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:21,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:22:21,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:22:21,951 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:22:21,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 10:22:22,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:22,097 INFO L255 TraceCheckSpWp]: Trace formula consists of 747 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 10:22:22,102 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:22:22,735 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 286 proven. 469 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-18 10:22:22,735 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:22:24,009 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 251 proven. 406 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-18 10:22:24,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306486821] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 10:22:24,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 10:22:24,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2024-11-18 10:22:24,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572541816] [2024-11-18 10:22:24,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 10:22:24,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 10:22:24,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:24,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 10:22:24,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2024-11-18 10:22:24,013 INFO L87 Difference]: Start difference. First operand 19588 states and 21538 transitions. Second operand has 10 states, 10 states have (on average 85.1) internal successors, (851), 9 states have internal predecessors, (851), 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) [2024-11-18 10:22:26,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:26,168 INFO L93 Difference]: Finished difference Result 61129 states and 66877 transitions. [2024-11-18 10:22:26,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 10:22:26,169 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 85.1) internal successors, (851), 9 states have internal predecessors, (851), 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 587 [2024-11-18 10:22:26,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:26,212 INFO L225 Difference]: With dead ends: 61129 [2024-11-18 10:22:26,212 INFO L226 Difference]: Without dead ends: 41911 [2024-11-18 10:22:26,231 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1176 GetRequests, 1168 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2024-11-18 10:22:26,231 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 890 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 3179 mSolverCounterSat, 509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 3688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 3179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:26,232 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 126 Invalid, 3688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [509 Valid, 3179 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-18 10:22:26,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41911 states. [2024-11-18 10:22:26,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41911 to 30470. [2024-11-18 10:22:26,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30470 states, 30469 states have (on average 1.0938987167284782) internal successors, (33330), 30469 states have internal predecessors, (33330), 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) [2024-11-18 10:22:26,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30470 states to 30470 states and 33330 transitions. [2024-11-18 10:22:26,615 INFO L78 Accepts]: Start accepts. Automaton has 30470 states and 33330 transitions. Word has length 587 [2024-11-18 10:22:26,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:26,616 INFO L471 AbstractCegarLoop]: Abstraction has 30470 states and 33330 transitions. [2024-11-18 10:22:26,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 85.1) internal successors, (851), 9 states have internal predecessors, (851), 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) [2024-11-18 10:22:26,616 INFO L276 IsEmpty]: Start isEmpty. Operand 30470 states and 33330 transitions. [2024-11-18 10:22:26,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2024-11-18 10:22:26,630 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:22:26,631 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:22:26,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-18 10:22:26,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:22:26,831 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:22:26,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:22:26,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1548100475, now seen corresponding path program 1 times [2024-11-18 10:22:26,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:22:26,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273839901] [2024-11-18 10:22:26,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:26,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:22:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:27,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 947 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2024-11-18 10:22:27,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:27,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273839901] [2024-11-18 10:22:27,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273839901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:22:27,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:22:27,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:22:27,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694431641] [2024-11-18 10:22:27,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:22:27,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:22:27,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:27,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:22:27,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:22:27,302 INFO L87 Difference]: Start difference. First operand 30470 states and 33330 transitions. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 3 states have internal predecessors, (364), 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) [2024-11-18 10:22:28,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:28,210 INFO L93 Difference]: Finished difference Result 71645 states and 78264 transitions. [2024-11-18 10:22:28,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:22:28,211 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 3 states have internal predecessors, (364), 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 601 [2024-11-18 10:22:28,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:28,258 INFO L225 Difference]: With dead ends: 71645 [2024-11-18 10:22:28,259 INFO L226 Difference]: Without dead ends: 40621 [2024-11-18 10:22:28,283 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:22:28,283 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 223 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:28,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 56 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 10:22:28,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40621 states. [2024-11-18 10:22:28,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40621 to 34884. [2024-11-18 10:22:28,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34884 states, 34883 states have (on average 1.0912192185305163) internal successors, (38065), 34883 states have internal predecessors, (38065), 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) [2024-11-18 10:22:28,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34884 states to 34884 states and 38065 transitions. [2024-11-18 10:22:28,669 INFO L78 Accepts]: Start accepts. Automaton has 34884 states and 38065 transitions. Word has length 601 [2024-11-18 10:22:28,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:28,670 INFO L471 AbstractCegarLoop]: Abstraction has 34884 states and 38065 transitions. [2024-11-18 10:22:28,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 3 states have internal predecessors, (364), 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) [2024-11-18 10:22:28,670 INFO L276 IsEmpty]: Start isEmpty. Operand 34884 states and 38065 transitions. [2024-11-18 10:22:28,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2024-11-18 10:22:28,688 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:22:28,688 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:22:28,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 10:22:28,688 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:22:28,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:22:28,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1608928017, now seen corresponding path program 1 times [2024-11-18 10:22:28,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:22:28,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076772334] [2024-11-18 10:22:28,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:28,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:22:28,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:29,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 829 proven. 301 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-11-18 10:22:29,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:29,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076772334] [2024-11-18 10:22:29,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076772334] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:22:29,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033765080] [2024-11-18 10:22:29,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:29,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:22:29,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:22:29,723 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:22:29,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 10:22:29,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:29,868 INFO L255 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 10:22:29,872 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:22:29,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 1004 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-11-18 10:22:29,976 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:22:29,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033765080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:22:29,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:22:29,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-18 10:22:29,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802915918] [2024-11-18 10:22:29,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:22:29,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:22:29,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:29,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:22:29,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-18 10:22:29,978 INFO L87 Difference]: Start difference. First operand 34884 states and 38065 transitions. Second operand has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 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) [2024-11-18 10:22:30,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:30,565 INFO L93 Difference]: Finished difference Result 69587 states and 75943 transitions. [2024-11-18 10:22:30,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:22:30,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 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 627 [2024-11-18 10:22:30,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:30,602 INFO L225 Difference]: With dead ends: 69587 [2024-11-18 10:22:30,603 INFO L226 Difference]: Without dead ends: 34889 [2024-11-18 10:22:30,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 627 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-18 10:22:30,625 INFO L432 NwaCegarLoop]: 314 mSDtfsCounter, 67 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:30,626 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 331 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 10:22:30,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34889 states. [2024-11-18 10:22:31,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34889 to 34884. [2024-11-18 10:22:31,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34884 states, 34883 states have (on average 1.0784909554797466) internal successors, (37621), 34883 states have internal predecessors, (37621), 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) [2024-11-18 10:22:31,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34884 states to 34884 states and 37621 transitions. [2024-11-18 10:22:31,063 INFO L78 Accepts]: Start accepts. Automaton has 34884 states and 37621 transitions. Word has length 627 [2024-11-18 10:22:31,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:31,063 INFO L471 AbstractCegarLoop]: Abstraction has 34884 states and 37621 transitions. [2024-11-18 10:22:31,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 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) [2024-11-18 10:22:31,064 INFO L276 IsEmpty]: Start isEmpty. Operand 34884 states and 37621 transitions. [2024-11-18 10:22:31,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2024-11-18 10:22:31,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:22:31,081 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:22:31,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-18 10:22:31,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-18 10:22:31,282 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:22:31,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:22:31,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1421710171, now seen corresponding path program 1 times [2024-11-18 10:22:31,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:22:31,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811883647] [2024-11-18 10:22:31,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:31,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:22:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:31,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1360 backedges. 878 proven. 0 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2024-11-18 10:22:31,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:31,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811883647] [2024-11-18 10:22:31,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811883647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:22:31,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:22:31,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:22:31,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382155631] [2024-11-18 10:22:31,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:22:31,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:22:31,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:31,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:22:31,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:22:31,630 INFO L87 Difference]: Start difference. First operand 34884 states and 37621 transitions. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 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) [2024-11-18 10:22:32,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:32,269 INFO L93 Difference]: Finished difference Result 71981 states and 77623 transitions. [2024-11-18 10:22:32,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:22:32,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 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 643 [2024-11-18 10:22:32,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:32,311 INFO L225 Difference]: With dead ends: 71981 [2024-11-18 10:22:32,311 INFO L226 Difference]: Without dead ends: 39309 [2024-11-18 10:22:32,333 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:22:32,334 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 107 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:32,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 61 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 10:22:32,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39309 states. [2024-11-18 10:22:32,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39309 to 34138. [2024-11-18 10:22:32,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34138 states, 34137 states have (on average 1.0763980431789555) internal successors, (36745), 34137 states have internal predecessors, (36745), 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) [2024-11-18 10:22:32,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34138 states to 34138 states and 36745 transitions. [2024-11-18 10:22:32,693 INFO L78 Accepts]: Start accepts. Automaton has 34138 states and 36745 transitions. Word has length 643 [2024-11-18 10:22:32,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:32,694 INFO L471 AbstractCegarLoop]: Abstraction has 34138 states and 36745 transitions. [2024-11-18 10:22:32,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 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) [2024-11-18 10:22:32,694 INFO L276 IsEmpty]: Start isEmpty. Operand 34138 states and 36745 transitions. [2024-11-18 10:22:32,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2024-11-18 10:22:32,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:22:32,712 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:22:32,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-18 10:22:32,712 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:22:32,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:22:32,712 INFO L85 PathProgramCache]: Analyzing trace with hash 200944737, now seen corresponding path program 1 times [2024-11-18 10:22:32,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:22:32,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904824978] [2024-11-18 10:22:32,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:32,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:22:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:33,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1434 backedges. 1099 proven. 0 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2024-11-18 10:22:33,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:33,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904824978] [2024-11-18 10:22:33,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904824978] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:22:33,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:22:33,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:22:33,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487545461] [2024-11-18 10:22:33,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:22:33,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:22:33,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:33,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:22:33,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:22:33,124 INFO L87 Difference]: Start difference. First operand 34138 states and 36745 transitions. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 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) [2024-11-18 10:22:33,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:33,728 INFO L93 Difference]: Finished difference Result 68088 states and 73298 transitions. [2024-11-18 10:22:33,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:22:33,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 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 696 [2024-11-18 10:22:33,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:33,764 INFO L225 Difference]: With dead ends: 68088 [2024-11-18 10:22:33,764 INFO L226 Difference]: Without dead ends: 34320 [2024-11-18 10:22:33,786 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:22:33,787 INFO L432 NwaCegarLoop]: 283 mSDtfsCounter, 61 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:33,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 296 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 10:22:33,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34320 states. [2024-11-18 10:22:34,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34320 to 33584. [2024-11-18 10:22:34,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33584 states, 33583 states have (on average 1.0676830539260935) internal successors, (35856), 33583 states have internal predecessors, (35856), 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) [2024-11-18 10:22:34,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33584 states to 33584 states and 35856 transitions. [2024-11-18 10:22:34,130 INFO L78 Accepts]: Start accepts. Automaton has 33584 states and 35856 transitions. Word has length 696 [2024-11-18 10:22:34,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:34,130 INFO L471 AbstractCegarLoop]: Abstraction has 33584 states and 35856 transitions. [2024-11-18 10:22:34,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 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) [2024-11-18 10:22:34,130 INFO L276 IsEmpty]: Start isEmpty. Operand 33584 states and 35856 transitions. [2024-11-18 10:22:34,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2024-11-18 10:22:34,148 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:22:34,148 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:22:34,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-18 10:22:34,149 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:22:34,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:22:34,149 INFO L85 PathProgramCache]: Analyzing trace with hash -807446658, now seen corresponding path program 1 times [2024-11-18 10:22:34,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:22:34,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653312917] [2024-11-18 10:22:34,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:34,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:22:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:34,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2242 backedges. 440 proven. 0 refuted. 0 times theorem prover too weak. 1802 trivial. 0 not checked. [2024-11-18 10:22:34,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:34,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653312917] [2024-11-18 10:22:34,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653312917] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:22:34,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:22:34,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:22:34,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652366204] [2024-11-18 10:22:34,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:22:34,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:22:34,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:34,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:22:34,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:22:34,624 INFO L87 Difference]: Start difference. First operand 33584 states and 35856 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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) [2024-11-18 10:22:35,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:35,178 INFO L93 Difference]: Finished difference Result 71046 states and 75874 transitions. [2024-11-18 10:22:35,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:22:35,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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 760 [2024-11-18 10:22:35,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:35,217 INFO L225 Difference]: With dead ends: 71046 [2024-11-18 10:22:35,217 INFO L226 Difference]: Without dead ends: 37832 [2024-11-18 10:22:35,238 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:22:35,238 INFO L432 NwaCegarLoop]: 279 mSDtfsCounter, 150 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:35,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 297 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 10:22:35,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37832 states. [2024-11-18 10:22:35,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37832 to 30641. [2024-11-18 10:22:35,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30641 states, 30640 states have (on average 1.0673629242819844) internal successors, (32704), 30640 states have internal predecessors, (32704), 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) [2024-11-18 10:22:35,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30641 states to 30641 states and 32704 transitions. [2024-11-18 10:22:35,584 INFO L78 Accepts]: Start accepts. Automaton has 30641 states and 32704 transitions. Word has length 760 [2024-11-18 10:22:35,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:35,584 INFO L471 AbstractCegarLoop]: Abstraction has 30641 states and 32704 transitions. [2024-11-18 10:22:35,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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) [2024-11-18 10:22:35,584 INFO L276 IsEmpty]: Start isEmpty. Operand 30641 states and 32704 transitions. [2024-11-18 10:22:35,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2024-11-18 10:22:35,601 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:22:35,602 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 10:22:35,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-18 10:22:35,602 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:22:35,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:22:35,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1099534904, now seen corresponding path program 1 times [2024-11-18 10:22:35,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:22:35,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653068086] [2024-11-18 10:22:35,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:35,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:22:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:36,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1897 backedges. 1324 proven. 77 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-18 10:22:36,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:36,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653068086] [2024-11-18 10:22:36,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653068086] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:22:36,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394091284] [2024-11-18 10:22:36,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:36,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:22:36,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:22:36,379 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:22:36,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-18 10:22:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:36,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 10:22:36,616 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:22:36,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1897 backedges. 1401 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-18 10:22:36,728 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:22:36,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394091284] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:22:36,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:22:36,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-18 10:22:36,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384171755] [2024-11-18 10:22:36,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:22:36,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:22:36,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:36,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:22:36,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:22:36,730 INFO L87 Difference]: Start difference. First operand 30641 states and 32704 transitions. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 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) [2024-11-18 10:22:37,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:37,311 INFO L93 Difference]: Finished difference Result 61456 states and 65601 transitions. [2024-11-18 10:22:37,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:22:37,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 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 767 [2024-11-18 10:22:37,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:37,353 INFO L225 Difference]: With dead ends: 61456 [2024-11-18 10:22:37,354 INFO L226 Difference]: Without dead ends: 31185 [2024-11-18 10:22:37,378 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 770 GetRequests, 766 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:22:37,378 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 59 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:37,379 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 125 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 10:22:37,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31185 states. [2024-11-18 10:22:37,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31185 to 27502. [2024-11-18 10:22:37,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27502 states, 27501 states have (on average 1.0617068470237445) internal successors, (29198), 27501 states have internal predecessors, (29198), 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) [2024-11-18 10:22:37,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27502 states to 27502 states and 29198 transitions. [2024-11-18 10:22:37,711 INFO L78 Accepts]: Start accepts. Automaton has 27502 states and 29198 transitions. Word has length 767 [2024-11-18 10:22:37,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:37,711 INFO L471 AbstractCegarLoop]: Abstraction has 27502 states and 29198 transitions. [2024-11-18 10:22:37,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 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) [2024-11-18 10:22:37,712 INFO L276 IsEmpty]: Start isEmpty. Operand 27502 states and 29198 transitions. [2024-11-18 10:22:37,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2024-11-18 10:22:37,727 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:22:37,728 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:22:37,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-18 10:22:37,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-18 10:22:37,929 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:22:37,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:22:37,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1099454636, now seen corresponding path program 1 times [2024-11-18 10:22:37,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:22:37,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673199329] [2024-11-18 10:22:37,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:37,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:22:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:38,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1729 backedges. 1191 proven. 0 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2024-11-18 10:22:38,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:38,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673199329] [2024-11-18 10:22:38,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673199329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:22:38,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:22:38,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:22:38,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246462106] [2024-11-18 10:22:38,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:22:38,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:22:38,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:38,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:22:38,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:22:38,350 INFO L87 Difference]: Start difference. First operand 27502 states and 29198 transitions. Second operand has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 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) [2024-11-18 10:22:38,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:38,948 INFO L93 Difference]: Finished difference Result 54085 states and 57350 transitions. [2024-11-18 10:22:38,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:22:38,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 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 774 [2024-11-18 10:22:38,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:38,977 INFO L225 Difference]: With dead ends: 54085 [2024-11-18 10:22:38,977 INFO L226 Difference]: Without dead ends: 28611 [2024-11-18 10:22:38,993 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:22:38,994 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 139 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:38,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 69 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 10:22:39,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28611 states. [2024-11-18 10:22:39,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28611 to 26212. [2024-11-18 10:22:39,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26212 states, 26211 states have (on average 1.0592880851550877) internal successors, (27765), 26211 states have internal predecessors, (27765), 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) [2024-11-18 10:22:39,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26212 states to 26212 states and 27765 transitions. [2024-11-18 10:22:39,272 INFO L78 Accepts]: Start accepts. Automaton has 26212 states and 27765 transitions. Word has length 774 [2024-11-18 10:22:39,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:39,272 INFO L471 AbstractCegarLoop]: Abstraction has 26212 states and 27765 transitions. [2024-11-18 10:22:39,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 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) [2024-11-18 10:22:39,273 INFO L276 IsEmpty]: Start isEmpty. Operand 26212 states and 27765 transitions. [2024-11-18 10:22:39,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 851 [2024-11-18 10:22:39,288 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:22:39,289 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:22:39,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-18 10:22:39,289 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:22:39,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:22:39,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1609928325, now seen corresponding path program 1 times [2024-11-18 10:22:39,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:22:39,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542411455] [2024-11-18 10:22:39,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:39,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:22:39,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:40,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1923 backedges. 1359 proven. 73 refuted. 0 times theorem prover too weak. 491 trivial. 0 not checked. [2024-11-18 10:22:40,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:22:40,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542411455] [2024-11-18 10:22:40,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542411455] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:22:40,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77739857] [2024-11-18 10:22:40,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:22:40,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:22:40,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:22:40,244 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:22:40,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-18 10:22:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:22:40,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-18 10:22:40,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:22:41,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1923 backedges. 1050 proven. 496 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2024-11-18 10:22:41,815 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:22:43,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1923 backedges. 1050 proven. 496 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2024-11-18 10:22:43,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77739857] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 10:22:43,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 10:22:43,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 13 [2024-11-18 10:22:43,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638021364] [2024-11-18 10:22:43,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 10:22:43,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 10:22:43,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:22:43,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 10:22:43,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-18 10:22:43,644 INFO L87 Difference]: Start difference. First operand 26212 states and 27765 transitions. Second operand has 13 states, 13 states have (on average 98.53846153846153) internal successors, (1281), 13 states have internal predecessors, (1281), 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) [2024-11-18 10:22:48,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:22:48,254 INFO L93 Difference]: Finished difference Result 54669 states and 57826 transitions. [2024-11-18 10:22:48,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-18 10:22:48,255 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 98.53846153846153) internal successors, (1281), 13 states have internal predecessors, (1281), 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 850 [2024-11-18 10:22:48,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:22:48,256 INFO L225 Difference]: With dead ends: 54669 [2024-11-18 10:22:48,256 INFO L226 Difference]: Without dead ends: 0 [2024-11-18 10:22:48,276 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1755 GetRequests, 1716 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=449, Invalid=1191, Unknown=0, NotChecked=0, Total=1640 [2024-11-18 10:22:48,276 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 3779 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 7865 mSolverCounterSat, 926 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3779 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 8791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 926 IncrementalHoareTripleChecker+Valid, 7865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-18 10:22:48,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3779 Valid, 191 Invalid, 8791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [926 Valid, 7865 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-18 10:22:48,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-18 10:22:48,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-18 10:22:48,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:22:48,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-18 10:22:48,277 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 850 [2024-11-18 10:22:48,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:22:48,277 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-18 10:22:48,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 98.53846153846153) internal successors, (1281), 13 states have internal predecessors, (1281), 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) [2024-11-18 10:22:48,278 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-18 10:22:48,278 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-18 10:22:48,280 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-18 10:22:48,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-18 10:22:48,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:22:48,483 INFO L407 BasicCegarLoop]: Path program 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] [2024-11-18 10:22:48,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-18 10:23:04,028 WARN L286 SmtUtils]: Spent 15.54s on a formula simplification. DAG size of input: 1010 DAG size of output: 1048 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or)