./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.08.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.08.cil-1.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 cc9459d71a43b78b6be6f61a2c5766a75503f0e4a415faec33f88f27c796c833 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 02:26:20,214 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 02:26:20,279 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 02:26:20,285 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 02:26:20,286 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 02:26:20,310 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 02:26:20,310 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 02:26:20,311 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 02:26:20,311 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 02:26:20,312 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 02:26:20,312 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 02:26:20,312 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 02:26:20,313 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 02:26:20,313 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 02:26:20,313 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 02:26:20,314 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 02:26:20,314 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 02:26:20,314 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 02:26:20,315 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 02:26:20,315 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 02:26:20,318 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 02:26:20,319 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 02:26:20,319 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 02:26:20,319 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 02:26:20,319 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 02:26:20,320 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 02:26:20,320 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 02:26:20,320 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 02:26:20,320 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 02:26:20,321 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 02:26:20,321 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 02:26:20,321 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 02:26:20,321 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 02:26:20,322 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 02:26:20,322 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 02:26:20,322 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 02:26:20,325 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 02:26:20,325 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 02:26:20,325 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 02:26:20,326 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 02:26:20,326 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 02:26:20,326 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 02:26:20,327 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc9459d71a43b78b6be6f61a2c5766a75503f0e4a415faec33f88f27c796c833 [2024-10-24 02:26:20,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 02:26:20,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 02:26:20,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 02:26:20,634 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 02:26:20,635 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 02:26:20,636 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.08.cil-1.c [2024-10-24 02:26:21,994 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 02:26:22,678 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 02:26:22,679 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.08.cil-1.c [2024-10-24 02:26:22,736 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1315fcc3/72d341c3542a4cd591cf9d34e251c2b2/FLAGc0fa2e598 [2024-10-24 02:26:23,091 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1315fcc3/72d341c3542a4cd591cf9d34e251c2b2 [2024-10-24 02:26:23,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 02:26:23,094 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 02:26:23,095 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 02:26:23,095 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 02:26:23,101 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 02:26:23,102 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:26:23" (1/1) ... [2024-10-24 02:26:23,103 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66063dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:26:23, skipping insertion in model container [2024-10-24 02:26:23,103 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:26:23" (1/1) ... [2024-10-24 02:26:23,296 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 02:26:24,945 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.08.cil-1.c[380593,380606] [2024-10-24 02:26:24,970 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.08.cil-1.c[383339,383352] [2024-10-24 02:26:25,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 02:26:25,180 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 02:26:25,984 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.08.cil-1.c[380593,380606] [2024-10-24 02:26:25,990 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.08.cil-1.c[383339,383352] [2024-10-24 02:26:26,008 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 02:26:26,074 INFO L204 MainTranslator]: Completed translation [2024-10-24 02:26:26,074 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:26:26 WrapperNode [2024-10-24 02:26:26,075 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 02:26:26,076 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 02:26:26,077 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 02:26:26,077 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 02:26:26,085 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:26:26" (1/1) ... [2024-10-24 02:26:26,202 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:26:26" (1/1) ... [2024-10-24 02:26:26,586 INFO L138 Inliner]: procedures = 60, calls = 65, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 12993 [2024-10-24 02:26:26,587 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 02:26:26,587 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 02:26:26,588 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 02:26:26,588 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 02:26:26,610 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:26:26" (1/1) ... [2024-10-24 02:26:26,617 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:26:26" (1/1) ... [2024-10-24 02:26:26,688 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:26:26" (1/1) ... [2024-10-24 02:26:26,835 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]. [2024-10-24 02:26:26,836 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:26:26" (1/1) ... [2024-10-24 02:26:26,837 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:26:26" (1/1) ... [2024-10-24 02:26:26,988 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:26:26" (1/1) ... [2024-10-24 02:26:27,049 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:26:26" (1/1) ... [2024-10-24 02:26:27,078 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:26:26" (1/1) ... [2024-10-24 02:26:27,152 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:26:26" (1/1) ... [2024-10-24 02:26:27,290 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 02:26:27,292 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 02:26:27,292 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 02:26:27,293 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 02:26:27,294 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:26:26" (1/1) ... [2024-10-24 02:26:27,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 02:26:27,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:26:27,359 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) [2024-10-24 02:26:27,370 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 [2024-10-24 02:26:27,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 02:26:27,427 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-10-24 02:26:27,427 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-10-24 02:26:27,427 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-24 02:26:27,427 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-24 02:26:27,427 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-10-24 02:26:27,429 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-10-24 02:26:27,429 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-10-24 02:26:27,429 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-10-24 02:26:27,430 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-10-24 02:26:27,430 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-10-24 02:26:27,430 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-10-24 02:26:27,430 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-10-24 02:26:27,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 02:26:27,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 02:26:27,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 02:26:27,651 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 02:26:27,655 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 02:26:35,470 INFO L? ?]: Removed 1731 outVars from TransFormulas that were not future-live. [2024-10-24 02:26:35,471 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 02:26:35,579 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 02:26:35,580 INFO L314 CfgBuilder]: Removed 12 assume(true) statements. [2024-10-24 02:26:35,580 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:26:35 BoogieIcfgContainer [2024-10-24 02:26:35,581 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 02:26:35,583 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 02:26:35,583 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 02:26:35,586 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 02:26:35,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:26:23" (1/3) ... [2024-10-24 02:26:35,588 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d78c7d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:26:35, skipping insertion in model container [2024-10-24 02:26:35,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:26:26" (2/3) ... [2024-10-24 02:26:35,590 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d78c7d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:26:35, skipping insertion in model container [2024-10-24 02:26:35,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:26:35" (3/3) ... [2024-10-24 02:26:35,592 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.08.cil-1.c [2024-10-24 02:26:35,609 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 02:26:35,610 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-24 02:26:35,737 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 02:26:35,743 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;@4bce8f1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 02:26:35,744 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-24 02:26:35,760 INFO L276 IsEmpty]: Start isEmpty. Operand has 2379 states, 2348 states have (on average 1.8794718909710393) internal successors, (4413), 2351 states have internal predecessors, (4413), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-24 02:26:35,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-10-24 02:26:35,780 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:26:35,781 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:26:35,782 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:26:35,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:26:35,790 INFO L85 PathProgramCache]: Analyzing trace with hash 854879499, now seen corresponding path program 1 times [2024-10-24 02:26:35,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:26:35,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363828552] [2024-10-24 02:26:35,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:26:35,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:26:35,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:36,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:26:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:36,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 02:26:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:36,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:26:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:36,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-24 02:26:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:36,379 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-24 02:26:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:36,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:26:36,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:26:36,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363828552] [2024-10-24 02:26:36,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363828552] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:26:36,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:26:36,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 02:26:36,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771387911] [2024-10-24 02:26:36,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:26:36,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 02:26:36,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:26:36,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 02:26:36,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:26:36,437 INFO L87 Difference]: Start difference. First operand has 2379 states, 2348 states have (on average 1.8794718909710393) internal successors, (4413), 2351 states have internal predecessors, (4413), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:26:37,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:26:37,816 INFO L93 Difference]: Finished difference Result 4844 states and 9066 transitions. [2024-10-24 02:26:37,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 02:26:37,819 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2024-10-24 02:26:37,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:26:37,841 INFO L225 Difference]: With dead ends: 4844 [2024-10-24 02:26:37,841 INFO L226 Difference]: Without dead ends: 2465 [2024-10-24 02:26:37,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-24 02:26:37,853 INFO L432 NwaCegarLoop]: 4181 mSDtfsCounter, 695 mSDsluCounter, 12116 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 16297 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:26:37,854 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 16297 Invalid, 806 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-24 02:26:37,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2024-10-24 02:26:37,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 2375. [2024-10-24 02:26:37,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2375 states, 2345 states have (on average 1.8426439232409382) internal successors, (4321), 2347 states have internal predecessors, (4321), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-24 02:26:38,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2375 states to 2375 states and 4365 transitions. [2024-10-24 02:26:38,004 INFO L78 Accepts]: Start accepts. Automaton has 2375 states and 4365 transitions. Word has length 121 [2024-10-24 02:26:38,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:26:38,004 INFO L471 AbstractCegarLoop]: Abstraction has 2375 states and 4365 transitions. [2024-10-24 02:26:38,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:26:38,005 INFO L276 IsEmpty]: Start isEmpty. Operand 2375 states and 4365 transitions. [2024-10-24 02:26:38,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-10-24 02:26:38,008 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:26:38,009 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:26:38,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 02:26:38,009 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:26:38,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:26:38,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1147006771, now seen corresponding path program 1 times [2024-10-24 02:26:38,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:26:38,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413040750] [2024-10-24 02:26:38,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:26:38,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:26:38,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:38,275 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:26:38,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:38,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 02:26:38,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:38,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:26:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:38,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-24 02:26:38,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:38,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-24 02:26:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:38,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:26:38,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:26:38,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413040750] [2024-10-24 02:26:38,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413040750] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:26:38,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:26:38,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 02:26:38,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144994488] [2024-10-24 02:26:38,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:26:38,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 02:26:38,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:26:38,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 02:26:38,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 02:26:38,467 INFO L87 Difference]: Start difference. First operand 2375 states and 4365 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:26:40,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:26:40,909 INFO L93 Difference]: Finished difference Result 3046 states and 5475 transitions. [2024-10-24 02:26:40,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 02:26:40,910 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2024-10-24 02:26:40,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:26:40,925 INFO L225 Difference]: With dead ends: 3046 [2024-10-24 02:26:40,925 INFO L226 Difference]: Without dead ends: 2806 [2024-10-24 02:26:40,928 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-24 02:26:40,929 INFO L432 NwaCegarLoop]: 4154 mSDtfsCounter, 4998 mSDsluCounter, 12445 mSDsCounter, 0 mSdLazyCounter, 1622 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5013 SdHoareTripleChecker+Valid, 16599 SdHoareTripleChecker+Invalid, 1714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-24 02:26:40,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5013 Valid, 16599 Invalid, 1714 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [92 Valid, 1622 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-24 02:26:40,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2024-10-24 02:26:41,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2627. [2024-10-24 02:26:41,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2627 states, 2573 states have (on average 1.8239409249902838) internal successors, (4693), 2576 states have internal predecessors, (4693), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2024-10-24 02:26:41,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2627 states to 2627 states and 4774 transitions. [2024-10-24 02:26:41,040 INFO L78 Accepts]: Start accepts. Automaton has 2627 states and 4774 transitions. Word has length 121 [2024-10-24 02:26:41,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:26:41,040 INFO L471 AbstractCegarLoop]: Abstraction has 2627 states and 4774 transitions. [2024-10-24 02:26:41,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:26:41,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2627 states and 4774 transitions. [2024-10-24 02:26:41,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-10-24 02:26:41,043 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:26:41,043 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:26:41,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 02:26:41,044 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:26:41,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:26:41,044 INFO L85 PathProgramCache]: Analyzing trace with hash -601718259, now seen corresponding path program 1 times [2024-10-24 02:26:41,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:26:41,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600838307] [2024-10-24 02:26:41,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:26:41,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:26:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:41,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:26:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:41,236 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 02:26:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:41,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:26:41,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:41,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-24 02:26:41,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:41,358 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-24 02:26:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:41,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:26:41,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:26:41,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600838307] [2024-10-24 02:26:41,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600838307] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:26:41,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:26:41,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:26:41,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873339640] [2024-10-24 02:26:41,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:26:41,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:26:41,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:26:41,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:26:41,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:26:41,366 INFO L87 Difference]: Start difference. First operand 2627 states and 4774 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:26:44,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:26:44,214 INFO L93 Difference]: Finished difference Result 3651 states and 6465 transitions. [2024-10-24 02:26:44,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 02:26:44,216 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2024-10-24 02:26:44,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:26:44,237 INFO L225 Difference]: With dead ends: 3651 [2024-10-24 02:26:44,237 INFO L226 Difference]: Without dead ends: 3159 [2024-10-24 02:26:44,243 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 02:26:44,244 INFO L432 NwaCegarLoop]: 4300 mSDtfsCounter, 5019 mSDsluCounter, 16941 mSDsCounter, 0 mSdLazyCounter, 2638 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5034 SdHoareTripleChecker+Valid, 21241 SdHoareTripleChecker+Invalid, 2691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:26:44,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5034 Valid, 21241 Invalid, 2691 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 2638 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-24 02:26:44,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3159 states. [2024-10-24 02:26:44,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3159 to 2860. [2024-10-24 02:26:44,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2860 states, 2782 states have (on average 1.8069734004313445) internal successors, (5027), 2786 states have internal predecessors, (5027), 56 states have call successors, (56), 18 states have call predecessors, (56), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2024-10-24 02:26:44,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2860 states to 2860 states and 5144 transitions. [2024-10-24 02:26:44,353 INFO L78 Accepts]: Start accepts. Automaton has 2860 states and 5144 transitions. Word has length 121 [2024-10-24 02:26:44,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:26:44,354 INFO L471 AbstractCegarLoop]: Abstraction has 2860 states and 5144 transitions. [2024-10-24 02:26:44,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:26:44,355 INFO L276 IsEmpty]: Start isEmpty. Operand 2860 states and 5144 transitions. [2024-10-24 02:26:44,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-10-24 02:26:44,356 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:26:44,357 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:26:44,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 02:26:44,358 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:26:44,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:26:44,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1659854991, now seen corresponding path program 1 times [2024-10-24 02:26:44,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:26:44,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423783621] [2024-10-24 02:26:44,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:26:44,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:26:44,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:44,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:26:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:44,523 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 02:26:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:44,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:26:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:44,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-24 02:26:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:44,609 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-24 02:26:44,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:44,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:26:44,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:26:44,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423783621] [2024-10-24 02:26:44,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423783621] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:26:44,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:26:44,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:26:44,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695392180] [2024-10-24 02:26:44,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:26:44,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:26:44,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:26:44,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:26:44,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:26:44,614 INFO L87 Difference]: Start difference. First operand 2860 states and 5144 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:26:46,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:26:46,679 INFO L93 Difference]: Finished difference Result 4537 states and 7907 transitions. [2024-10-24 02:26:46,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 02:26:46,680 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2024-10-24 02:26:46,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:26:46,697 INFO L225 Difference]: With dead ends: 4537 [2024-10-24 02:26:46,700 INFO L226 Difference]: Without dead ends: 3812 [2024-10-24 02:26:46,704 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 02:26:46,705 INFO L432 NwaCegarLoop]: 4163 mSDtfsCounter, 5097 mSDsluCounter, 16578 mSDsCounter, 0 mSdLazyCounter, 2188 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5112 SdHoareTripleChecker+Valid, 20741 SdHoareTripleChecker+Invalid, 2271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-24 02:26:46,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5112 Valid, 20741 Invalid, 2271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2188 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-24 02:26:46,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3812 states. [2024-10-24 02:26:46,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3812 to 3327. [2024-10-24 02:26:46,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3327 states, 3201 states have (on average 1.7794439237738207) internal successors, (5696), 3207 states have internal predecessors, (5696), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2024-10-24 02:26:46,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3327 states to 3327 states and 5889 transitions. [2024-10-24 02:26:46,851 INFO L78 Accepts]: Start accepts. Automaton has 3327 states and 5889 transitions. Word has length 121 [2024-10-24 02:26:46,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:26:46,854 INFO L471 AbstractCegarLoop]: Abstraction has 3327 states and 5889 transitions. [2024-10-24 02:26:46,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:26:46,855 INFO L276 IsEmpty]: Start isEmpty. Operand 3327 states and 5889 transitions. [2024-10-24 02:26:46,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-10-24 02:26:46,857 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:26:46,857 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:26:46,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 02:26:46,857 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:26:46,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:26:46,858 INFO L85 PathProgramCache]: Analyzing trace with hash -206853683, now seen corresponding path program 1 times [2024-10-24 02:26:46,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:26:46,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628744042] [2024-10-24 02:26:46,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:26:46,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:26:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:46,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:26:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:47,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 02:26:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:47,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:26:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:47,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-24 02:26:47,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:47,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-24 02:26:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:47,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:26:47,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:26:47,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628744042] [2024-10-24 02:26:47,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628744042] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:26:47,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:26:47,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:26:47,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043353223] [2024-10-24 02:26:47,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:26:47,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:26:47,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:26:47,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:26:47,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:26:47,110 INFO L87 Difference]: Start difference. First operand 3327 states and 5889 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:26:48,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:26:48,503 INFO L93 Difference]: Finished difference Result 4994 states and 8645 transitions. [2024-10-24 02:26:48,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 02:26:48,504 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2024-10-24 02:26:48,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:26:48,523 INFO L225 Difference]: With dead ends: 4994 [2024-10-24 02:26:48,523 INFO L226 Difference]: Without dead ends: 3802 [2024-10-24 02:26:48,529 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-24 02:26:48,530 INFO L432 NwaCegarLoop]: 4141 mSDtfsCounter, 4728 mSDsluCounter, 16388 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4744 SdHoareTripleChecker+Valid, 20529 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:26:48,530 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4744 Valid, 20529 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-24 02:26:48,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3802 states. [2024-10-24 02:26:48,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3802 to 3327. [2024-10-24 02:26:48,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3327 states, 3201 states have (on average 1.7778819119025304) internal successors, (5691), 3207 states have internal predecessors, (5691), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2024-10-24 02:26:48,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3327 states to 3327 states and 5884 transitions. [2024-10-24 02:26:48,658 INFO L78 Accepts]: Start accepts. Automaton has 3327 states and 5884 transitions. Word has length 121 [2024-10-24 02:26:48,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:26:48,659 INFO L471 AbstractCegarLoop]: Abstraction has 3327 states and 5884 transitions. [2024-10-24 02:26:48,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:26:48,660 INFO L276 IsEmpty]: Start isEmpty. Operand 3327 states and 5884 transitions. [2024-10-24 02:26:48,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-10-24 02:26:48,661 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:26:48,662 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:26:48,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 02:26:48,662 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:26:48,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:26:48,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1513996081, now seen corresponding path program 1 times [2024-10-24 02:26:48,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:26:48,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832682281] [2024-10-24 02:26:48,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:26:48,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:26:48,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:48,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:26:48,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:48,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 02:26:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:48,847 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:26:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:48,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-24 02:26:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:48,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-24 02:26:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:48,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:26:48,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:26:48,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832682281] [2024-10-24 02:26:48,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832682281] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:26:48,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:26:48,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:26:48,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158432960] [2024-10-24 02:26:48,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:26:48,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:26:48,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:26:48,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:26:48,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:26:48,881 INFO L87 Difference]: Start difference. First operand 3327 states and 5884 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:26:49,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:26:49,915 INFO L93 Difference]: Finished difference Result 4983 states and 8609 transitions. [2024-10-24 02:26:49,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 02:26:49,916 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2024-10-24 02:26:49,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:26:49,931 INFO L225 Difference]: With dead ends: 4983 [2024-10-24 02:26:49,931 INFO L226 Difference]: Without dead ends: 3791 [2024-10-24 02:26:49,936 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-24 02:26:49,938 INFO L432 NwaCegarLoop]: 4141 mSDtfsCounter, 4833 mSDsluCounter, 12312 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4849 SdHoareTripleChecker+Valid, 16453 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 02:26:49,938 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4849 Valid, 16453 Invalid, 1265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 02:26:49,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3791 states. [2024-10-24 02:26:50,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3791 to 3327. [2024-10-24 02:26:50,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3327 states, 3201 states have (on average 1.7763199000312402) internal successors, (5686), 3207 states have internal predecessors, (5686), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2024-10-24 02:26:50,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3327 states to 3327 states and 5879 transitions. [2024-10-24 02:26:50,067 INFO L78 Accepts]: Start accepts. Automaton has 3327 states and 5879 transitions. Word has length 121 [2024-10-24 02:26:50,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:26:50,067 INFO L471 AbstractCegarLoop]: Abstraction has 3327 states and 5879 transitions. [2024-10-24 02:26:50,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:26:50,068 INFO L276 IsEmpty]: Start isEmpty. Operand 3327 states and 5879 transitions. [2024-10-24 02:26:50,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-10-24 02:26:50,070 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:26:50,070 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:26:50,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 02:26:50,070 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:26:50,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:26:50,071 INFO L85 PathProgramCache]: Analyzing trace with hash -482955183, now seen corresponding path program 1 times [2024-10-24 02:26:50,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:26:50,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42475000] [2024-10-24 02:26:50,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:26:50,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:26:50,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:50,226 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:26:50,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:50,279 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 02:26:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:50,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:26:50,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:50,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-24 02:26:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:50,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-24 02:26:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:50,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:26:50,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:26:50,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42475000] [2024-10-24 02:26:50,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42475000] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:26:50,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:26:50,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:26:50,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842663475] [2024-10-24 02:26:50,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:26:50,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:26:50,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:26:50,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:26:50,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:26:50,363 INFO L87 Difference]: Start difference. First operand 3327 states and 5879 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:26:52,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:26:52,739 INFO L93 Difference]: Finished difference Result 6219 states and 10582 transitions. [2024-10-24 02:26:52,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 02:26:52,740 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2024-10-24 02:26:52,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:26:52,771 INFO L225 Difference]: With dead ends: 6219 [2024-10-24 02:26:52,775 INFO L226 Difference]: Without dead ends: 5027 [2024-10-24 02:26:52,783 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 02:26:52,784 INFO L432 NwaCegarLoop]: 4298 mSDtfsCounter, 5002 mSDsluCounter, 16941 mSDsCounter, 0 mSdLazyCounter, 2559 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5017 SdHoareTripleChecker+Valid, 21239 SdHoareTripleChecker+Invalid, 2614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-24 02:26:52,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5017 Valid, 21239 Invalid, 2614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2559 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-24 02:26:52,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5027 states. [2024-10-24 02:26:52,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5027 to 4276. [2024-10-24 02:26:52,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4276 states, 4054 states have (on average 1.735816477553034) internal successors, (7037), 4064 states have internal predecessors, (7037), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2024-10-24 02:26:52,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4276 states to 4276 states and 7388 transitions. [2024-10-24 02:26:52,956 INFO L78 Accepts]: Start accepts. Automaton has 4276 states and 7388 transitions. Word has length 121 [2024-10-24 02:26:52,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:26:52,956 INFO L471 AbstractCegarLoop]: Abstraction has 4276 states and 7388 transitions. [2024-10-24 02:26:52,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:26:52,957 INFO L276 IsEmpty]: Start isEmpty. Operand 4276 states and 7388 transitions. [2024-10-24 02:26:52,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-10-24 02:26:52,959 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:26:52,960 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:26:52,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 02:26:52,960 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:26:52,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:26:52,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1905608847, now seen corresponding path program 1 times [2024-10-24 02:26:52,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:26:52,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826433011] [2024-10-24 02:26:52,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:26:52,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:26:52,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:53,032 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:26:53,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:53,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 02:26:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:53,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:26:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:53,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-24 02:26:53,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:53,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-24 02:26:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:53,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:26:53,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:26:53,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826433011] [2024-10-24 02:26:53,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826433011] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:26:53,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:26:53,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:26:53,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043058354] [2024-10-24 02:26:53,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:26:53,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:26:53,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:26:53,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:26:53,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:26:53,151 INFO L87 Difference]: Start difference. First operand 4276 states and 7388 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:26:54,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:26:54,635 INFO L93 Difference]: Finished difference Result 7177 states and 12134 transitions. [2024-10-24 02:26:54,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 02:26:54,636 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2024-10-24 02:26:54,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:26:54,661 INFO L225 Difference]: With dead ends: 7177 [2024-10-24 02:26:54,662 INFO L226 Difference]: Without dead ends: 5036 [2024-10-24 02:26:54,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-24 02:26:54,672 INFO L432 NwaCegarLoop]: 4141 mSDtfsCounter, 4724 mSDsluCounter, 16388 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4740 SdHoareTripleChecker+Valid, 20529 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:26:54,673 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4740 Valid, 20529 Invalid, 1348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1291 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-24 02:26:54,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5036 states. [2024-10-24 02:26:54,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5036 to 4276. [2024-10-24 02:26:54,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4276 states, 4054 states have (on average 1.7335964479526393) internal successors, (7028), 4064 states have internal predecessors, (7028), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2024-10-24 02:26:54,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4276 states to 4276 states and 7379 transitions. [2024-10-24 02:26:54,971 INFO L78 Accepts]: Start accepts. Automaton has 4276 states and 7379 transitions. Word has length 121 [2024-10-24 02:26:54,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:26:54,971 INFO L471 AbstractCegarLoop]: Abstraction has 4276 states and 7379 transitions. [2024-10-24 02:26:54,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:26:54,972 INFO L276 IsEmpty]: Start isEmpty. Operand 4276 states and 7379 transitions. [2024-10-24 02:26:54,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-10-24 02:26:54,975 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:26:54,975 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:26:54,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 02:26:54,976 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:26:54,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:26:54,977 INFO L85 PathProgramCache]: Analyzing trace with hash -788287343, now seen corresponding path program 1 times [2024-10-24 02:26:54,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:26:54,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725146129] [2024-10-24 02:26:54,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:26:54,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:26:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:55,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:26:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:55,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 02:26:55,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:55,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:26:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:55,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-24 02:26:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:55,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-24 02:26:55,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:55,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:26:55,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:26:55,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725146129] [2024-10-24 02:26:55,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725146129] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:26:55,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:26:55,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:26:55,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278367792] [2024-10-24 02:26:55,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:26:55,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:26:55,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:26:55,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:26:55,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:26:55,269 INFO L87 Difference]: Start difference. First operand 4276 states and 7379 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:26:57,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:26:57,797 INFO L93 Difference]: Finished difference Result 9610 states and 16003 transitions. [2024-10-24 02:26:57,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 02:26:57,798 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2024-10-24 02:26:57,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:26:57,823 INFO L225 Difference]: With dead ends: 9610 [2024-10-24 02:26:57,823 INFO L226 Difference]: Without dead ends: 7469 [2024-10-24 02:26:57,830 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 02:26:57,832 INFO L432 NwaCegarLoop]: 4298 mSDtfsCounter, 4994 mSDsluCounter, 16941 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5009 SdHoareTripleChecker+Valid, 21239 SdHoareTripleChecker+Invalid, 2576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-24 02:26:57,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5009 Valid, 21239 Invalid, 2576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-24 02:26:57,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7469 states. [2024-10-24 02:26:58,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7469 to 6184. [2024-10-24 02:26:58,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6184 states, 5770 states have (on average 1.6863084922010398) internal successors, (9730), 5788 states have internal predecessors, (9730), 294 states have call successors, (294), 102 states have call predecessors, (294), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2024-10-24 02:26:58,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6184 states to 6184 states and 10415 transitions. [2024-10-24 02:26:58,121 INFO L78 Accepts]: Start accepts. Automaton has 6184 states and 10415 transitions. Word has length 121 [2024-10-24 02:26:58,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:26:58,123 INFO L471 AbstractCegarLoop]: Abstraction has 6184 states and 10415 transitions. [2024-10-24 02:26:58,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:26:58,123 INFO L276 IsEmpty]: Start isEmpty. Operand 6184 states and 10415 transitions. [2024-10-24 02:26:58,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-10-24 02:26:58,128 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:26:58,128 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:26:58,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 02:26:58,128 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:26:58,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:26:58,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1845018545, now seen corresponding path program 1 times [2024-10-24 02:26:58,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:26:58,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169690686] [2024-10-24 02:26:58,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:26:58,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:26:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:58,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:26:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:58,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 02:26:58,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:58,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:26:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:58,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-24 02:26:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:58,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-24 02:26:58,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:26:58,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:26:58,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:26:58,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169690686] [2024-10-24 02:26:58,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169690686] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:26:58,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:26:58,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:26:58,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149419983] [2024-10-24 02:26:58,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:26:58,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:26:58,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:26:58,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:26:58,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:26:58,323 INFO L87 Difference]: Start difference. First operand 6184 states and 10415 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:27:01,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:27:01,116 INFO L93 Difference]: Finished difference Result 18072 states and 29651 transitions. [2024-10-24 02:27:01,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 02:27:01,116 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2024-10-24 02:27:01,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:27:01,165 INFO L225 Difference]: With dead ends: 18072 [2024-10-24 02:27:01,165 INFO L226 Difference]: Without dead ends: 14023 [2024-10-24 02:27:01,185 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-24 02:27:01,186 INFO L432 NwaCegarLoop]: 4296 mSDtfsCounter, 5287 mSDsluCounter, 16936 mSDsCounter, 0 mSdLazyCounter, 2498 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5311 SdHoareTripleChecker+Valid, 21232 SdHoareTripleChecker+Invalid, 2556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-24 02:27:01,187 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5311 Valid, 21232 Invalid, 2556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 2498 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-24 02:27:01,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14023 states. [2024-10-24 02:27:01,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14023 to 9981. [2024-10-24 02:27:01,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9981 states, 9199 states have (on average 1.6453962387216001) internal successors, (15136), 9233 states have internal predecessors, (15136), 550 states have call successors, (550), 198 states have call predecessors, (550), 230 states have return successors, (825), 581 states have call predecessors, (825), 550 states have call successors, (825) [2024-10-24 02:27:01,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9981 states to 9981 states and 16511 transitions. [2024-10-24 02:27:01,737 INFO L78 Accepts]: Start accepts. Automaton has 9981 states and 16511 transitions. Word has length 121 [2024-10-24 02:27:01,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:27:01,737 INFO L471 AbstractCegarLoop]: Abstraction has 9981 states and 16511 transitions. [2024-10-24 02:27:01,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:27:01,738 INFO L276 IsEmpty]: Start isEmpty. Operand 9981 states and 16511 transitions. [2024-10-24 02:27:01,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-10-24 02:27:01,744 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:27:01,744 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:27:01,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 02:27:01,745 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:27:01,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:27:01,745 INFO L85 PathProgramCache]: Analyzing trace with hash -493633327, now seen corresponding path program 1 times [2024-10-24 02:27:01,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:27:01,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977188168] [2024-10-24 02:27:01,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:27:01,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:27:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:27:01,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:27:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:27:01,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 02:27:01,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:27:01,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:27:01,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:27:01,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-24 02:27:01,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:27:01,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-24 02:27:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:27:01,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:27:01,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:27:01,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977188168] [2024-10-24 02:27:01,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977188168] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:27:01,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:27:01,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:27:01,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026963914] [2024-10-24 02:27:01,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:27:01,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:27:01,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:27:01,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:27:01,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:27:01,946 INFO L87 Difference]: Start difference. First operand 9981 states and 16511 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:27:05,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:27:05,683 INFO L93 Difference]: Finished difference Result 32883 states and 53741 transitions. [2024-10-24 02:27:05,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 02:27:05,684 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2024-10-24 02:27:05,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:27:05,796 INFO L225 Difference]: With dead ends: 32883 [2024-10-24 02:27:05,796 INFO L226 Difference]: Without dead ends: 25037 [2024-10-24 02:27:05,831 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-24 02:27:05,832 INFO L432 NwaCegarLoop]: 4189 mSDtfsCounter, 5120 mSDsluCounter, 16600 mSDsCounter, 0 mSdLazyCounter, 2636 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5134 SdHoareTripleChecker+Valid, 20789 SdHoareTripleChecker+Invalid, 2715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:27:05,833 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5134 Valid, 20789 Invalid, 2715 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [79 Valid, 2636 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-24 02:27:05,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25037 states. [2024-10-24 02:27:06,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25037 to 17414. [2024-10-24 02:27:06,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17414 states, 15912 states have (on average 1.6165158371040724) internal successors, (25722), 15978 states have internal predecessors, (25722), 1046 states have call successors, (1046), 390 states have call predecessors, (1046), 454 states have return successors, (1839), 1109 states have call predecessors, (1839), 1046 states have call successors, (1839) [2024-10-24 02:27:06,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17414 states to 17414 states and 28607 transitions. [2024-10-24 02:27:06,951 INFO L78 Accepts]: Start accepts. Automaton has 17414 states and 28607 transitions. Word has length 121 [2024-10-24 02:27:06,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:27:06,951 INFO L471 AbstractCegarLoop]: Abstraction has 17414 states and 28607 transitions. [2024-10-24 02:27:06,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:27:06,952 INFO L276 IsEmpty]: Start isEmpty. Operand 17414 states and 28607 transitions. [2024-10-24 02:27:06,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-10-24 02:27:06,966 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:27:06,966 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:27:06,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 02:27:06,966 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:27:06,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:27:06,967 INFO L85 PathProgramCache]: Analyzing trace with hash -2112608241, now seen corresponding path program 1 times [2024-10-24 02:27:06,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:27:06,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214889832] [2024-10-24 02:27:06,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:27:06,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:27:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:27:07,035 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:27:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:27:07,079 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 02:27:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:27:07,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:27:07,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:27:07,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-24 02:27:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:27:07,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-24 02:27:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:27:07,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:27:07,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:27:07,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214889832] [2024-10-24 02:27:07,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214889832] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:27:07,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:27:07,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:27:07,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881473051] [2024-10-24 02:27:07,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:27:07,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:27:07,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:27:07,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:27:07,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:27:07,151 INFO L87 Difference]: Start difference. First operand 17414 states and 28607 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:27:11,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:27:11,377 INFO L93 Difference]: Finished difference Result 61578 states and 100971 transitions. [2024-10-24 02:27:11,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 02:27:11,378 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2024-10-24 02:27:11,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:27:11,583 INFO L225 Difference]: With dead ends: 61578 [2024-10-24 02:27:11,584 INFO L226 Difference]: Without dead ends: 46299 [2024-10-24 02:27:11,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-24 02:27:11,643 INFO L432 NwaCegarLoop]: 4296 mSDtfsCounter, 5221 mSDsluCounter, 16936 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5245 SdHoareTripleChecker+Valid, 21232 SdHoareTripleChecker+Invalid, 2525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-24 02:27:11,643 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5245 Valid, 21232 Invalid, 2525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-24 02:27:11,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46299 states. [2024-10-24 02:27:13,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46299 to 32439. [2024-10-24 02:27:13,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32439 states, 29529 states have (on average 1.598835043516543) internal successors, (47212), 29659 states have internal predecessors, (47212), 2006 states have call successors, (2006), 774 states have call predecessors, (2006), 902 states have return successors, (4321), 2133 states have call predecessors, (4321), 2006 states have call successors, (4321) [2024-10-24 02:27:13,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32439 states to 32439 states and 53539 transitions. [2024-10-24 02:27:14,008 INFO L78 Accepts]: Start accepts. Automaton has 32439 states and 53539 transitions. Word has length 121 [2024-10-24 02:27:14,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:27:14,008 INFO L471 AbstractCegarLoop]: Abstraction has 32439 states and 53539 transitions. [2024-10-24 02:27:14,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:27:14,009 INFO L276 IsEmpty]: Start isEmpty. Operand 32439 states and 53539 transitions. [2024-10-24 02:27:14,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-10-24 02:27:14,030 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:27:14,030 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:27:14,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 02:27:14,031 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:27:14,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:27:14,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1298850065, now seen corresponding path program 1 times [2024-10-24 02:27:14,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:27:14,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110703369] [2024-10-24 02:27:14,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:27:14,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:27:14,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:27:14,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:27:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:27:14,142 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 02:27:14,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:27:14,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:27:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:27:14,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-24 02:27:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:27:14,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-24 02:27:14,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:27:14,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:27:14,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:27:14,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110703369] [2024-10-24 02:27:14,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110703369] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:27:14,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:27:14,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:27:14,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509206979] [2024-10-24 02:27:14,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:27:14,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:27:14,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:27:14,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:27:14,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:27:14,217 INFO L87 Difference]: Start difference. First operand 32439 states and 53539 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:27:21,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:27:21,453 INFO L93 Difference]: Finished difference Result 116759 states and 193853 transitions. [2024-10-24 02:27:21,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 02:27:21,453 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 121 [2024-10-24 02:27:21,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:27:21,867 INFO L225 Difference]: With dead ends: 116759 [2024-10-24 02:27:21,868 INFO L226 Difference]: Without dead ends: 86455 [2024-10-24 02:27:21,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-24 02:27:21,989 INFO L432 NwaCegarLoop]: 4296 mSDtfsCounter, 5030 mSDsluCounter, 16936 mSDsCounter, 0 mSdLazyCounter, 2755 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5044 SdHoareTripleChecker+Valid, 21232 SdHoareTripleChecker+Invalid, 2812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-24 02:27:21,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5044 Valid, 21232 Invalid, 2812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2755 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-24 02:27:22,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86455 states. [2024-10-24 02:27:26,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86455 to 62617. [2024-10-24 02:27:26,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62617 states, 56955 states have (on average 1.5903081380036872) internal successors, (90576), 57213 states have internal predecessors, (90576), 3862 states have call successors, (3862), 1542 states have call predecessors, (3862), 1798 states have return successors, (10679), 4117 states have call predecessors, (10679), 3862 states have call successors, (10679) [2024-10-24 02:27:26,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62617 states to 62617 states and 105117 transitions. [2024-10-24 02:27:26,562 INFO L78 Accepts]: Start accepts. Automaton has 62617 states and 105117 transitions. Word has length 121 [2024-10-24 02:27:26,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:27:26,562 INFO L471 AbstractCegarLoop]: Abstraction has 62617 states and 105117 transitions. [2024-10-24 02:27:26,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:27:26,563 INFO L276 IsEmpty]: Start isEmpty. Operand 62617 states and 105117 transitions. [2024-10-24 02:27:26,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-10-24 02:27:26,609 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:27:26,609 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:27:26,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 02:27:26,609 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:27:26,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:27:26,610 INFO L85 PathProgramCache]: Analyzing trace with hash -641731949, now seen corresponding path program 1 times [2024-10-24 02:27:26,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:27:26,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108511516] [2024-10-24 02:27:26,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:27:26,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:27:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:27:26,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:27:26,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:27:26,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 02:27:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:27:26,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:27:26,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:27:26,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-24 02:27:26,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:27:26,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-24 02:27:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:27:26,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:27:26,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:27:26,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108511516] [2024-10-24 02:27:26,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108511516] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:27:26,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:27:26,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:27:26,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080053392] [2024-10-24 02:27:26,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:27:26,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:27:26,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:27:26,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:27:26,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:27:26,830 INFO L87 Difference]: Start difference. First operand 62617 states and 105117 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)