./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.04.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.04.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 6b2ea308b98ca1eae9030e7a6017fcc5084f411cde9353ed6e1419a4046239c4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 15:39:24,963 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 15:39:25,048 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 15:39:25,055 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 15:39:25,056 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 15:39:25,089 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 15:39:25,090 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 15:39:25,090 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 15:39:25,091 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 15:39:25,092 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 15:39:25,093 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 15:39:25,093 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 15:39:25,094 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 15:39:25,094 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 15:39:25,095 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 15:39:25,097 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 15:39:25,097 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 15:39:25,097 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 15:39:25,098 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 15:39:25,098 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 15:39:25,098 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 15:39:25,101 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 15:39:25,101 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 15:39:25,102 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 15:39:25,102 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 15:39:25,102 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 15:39:25,103 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 15:39:25,103 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 15:39:25,103 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 15:39:25,103 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 15:39:25,104 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 15:39:25,104 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 15:39:25,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:39:25,105 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 15:39:25,106 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 15:39:25,106 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 15:39:25,107 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 15:39:25,107 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 15:39:25,107 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 15:39:25,107 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 15:39:25,108 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 15:39:25,108 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 15:39:25,108 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b2ea308b98ca1eae9030e7a6017fcc5084f411cde9353ed6e1419a4046239c4 [2024-11-18 15:39:25,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 15:39:25,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 15:39:25,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 15:39:25,427 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 15:39:25,428 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 15:39:25,430 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label46+token_ring.04.cil-1.c [2024-11-18 15:39:26,915 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 15:39:27,515 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 15:39:27,517 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.04.cil-1.c [2024-11-18 15:39:27,577 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b66b66f31/cbed7ef61425480bab63fdaf23bc6455/FLAG70729ba55 [2024-11-18 15:39:27,987 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b66b66f31/cbed7ef61425480bab63fdaf23bc6455 [2024-11-18 15:39:27,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 15:39:27,991 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 15:39:27,993 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 15:39:27,993 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 15:39:27,998 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 15:39:27,998 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:39:27" (1/1) ... [2024-11-18 15:39:27,999 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15024df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:27, skipping insertion in model container [2024-11-18 15:39:27,999 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:39:27" (1/1) ... [2024-11-18 15:39:28,217 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 15:39:29,775 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.04.cil-1.c[382357,382370] [2024-11-18 15:39:29,799 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.04.cil-1.c[383339,383352] [2024-11-18 15:39:30,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:39:30,020 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 15:39:30,797 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.04.cil-1.c[382357,382370] [2024-11-18 15:39:30,801 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.04.cil-1.c[383339,383352] [2024-11-18 15:39:30,815 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:39:30,874 INFO L204 MainTranslator]: Completed translation [2024-11-18 15:39:30,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:30 WrapperNode [2024-11-18 15:39:30,875 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 15:39:30,877 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 15:39:30,877 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 15:39:30,877 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 15:39:30,885 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:30" (1/1) ... [2024-11-18 15:39:30,971 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:30" (1/1) ... [2024-11-18 15:39:31,500 INFO L138 Inliner]: procedures = 52, calls = 53, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 12753 [2024-11-18 15:39:31,501 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 15:39:31,502 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 15:39:31,502 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 15:39:31,502 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 15:39:31,513 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:30" (1/1) ... [2024-11-18 15:39:31,513 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:30" (1/1) ... [2024-11-18 15:39:31,600 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:30" (1/1) ... [2024-11-18 15:39:31,719 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 15:39:31,720 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:30" (1/1) ... [2024-11-18 15:39:31,720 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:30" (1/1) ... [2024-11-18 15:39:31,934 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:30" (1/1) ... [2024-11-18 15:39:32,109 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:30" (1/1) ... [2024-11-18 15:39:32,172 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:30" (1/1) ... [2024-11-18 15:39:32,197 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:30" (1/1) ... [2024-11-18 15:39:32,277 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 15:39:32,279 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 15:39:32,279 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 15:39:32,279 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 15:39:32,281 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:30" (1/1) ... [2024-11-18 15:39:32,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:39:32,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:39:32,318 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 15:39:32,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 15:39:32,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 15:39:32,368 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-18 15:39:32,369 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-18 15:39:32,369 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-18 15:39:32,370 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-18 15:39:32,370 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-18 15:39:32,371 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-18 15:39:32,371 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-18 15:39:32,371 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-18 15:39:32,371 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-18 15:39:32,371 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-18 15:39:32,371 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-18 15:39:32,371 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-18 15:39:32,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 15:39:32,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 15:39:32,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 15:39:32,508 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 15:39:32,511 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 15:39:40,602 INFO L? ?]: Removed 1707 outVars from TransFormulas that were not future-live. [2024-11-18 15:39:40,603 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 15:39:40,675 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 15:39:40,675 INFO L316 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-18 15:39:40,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:39:40 BoogieIcfgContainer [2024-11-18 15:39:40,676 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 15:39:40,679 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 15:39:40,679 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 15:39:40,683 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 15:39:40,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:39:27" (1/3) ... [2024-11-18 15:39:40,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57de1668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:39:40, skipping insertion in model container [2024-11-18 15:39:40,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:30" (2/3) ... [2024-11-18 15:39:40,685 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57de1668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:39:40, skipping insertion in model container [2024-11-18 15:39:40,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:39:40" (3/3) ... [2024-11-18 15:39:40,687 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.04.cil-1.c [2024-11-18 15:39:40,706 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 15:39:40,707 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-18 15:39:40,863 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 15:39:40,871 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;@53c1ee2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 15:39:40,871 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-18 15:39:40,888 INFO L276 IsEmpty]: Start isEmpty. Operand has 2370 states, 2343 states have (on average 1.8523260776781905) internal successors, (4340), 2346 states have internal predecessors, (4340), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-18 15:39:40,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-18 15:39:40,905 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:39:40,905 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] [2024-11-18 15:39:40,906 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:39:40,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:39:40,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1995785756, now seen corresponding path program 1 times [2024-11-18 15:39:40,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:39:40,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020550177] [2024-11-18 15:39:40,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:39:40,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:39:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:39:41,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:39:41,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:39:41,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020550177] [2024-11-18 15:39:41,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020550177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:39:41,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:39:41,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:39:41,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262221680] [2024-11-18 15:39:41,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:39:41,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:39:41,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:39:41,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:39:41,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:39:41,333 INFO L87 Difference]: Start difference. First operand has 2370 states, 2343 states have (on average 1.8523260776781905) internal successors, (4340), 2346 states have internal predecessors, (4340), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:39:41,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:39:41,548 INFO L93 Difference]: Finished difference Result 4734 states and 8741 transitions. [2024-11-18 15:39:41,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:39:41,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 1 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 90 [2024-11-18 15:39:41,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:39:41,581 INFO L225 Difference]: With dead ends: 4734 [2024-11-18 15:39:41,581 INFO L226 Difference]: Without dead ends: 2303 [2024-11-18 15:39:41,592 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:39:41,595 INFO L432 NwaCegarLoop]: 4297 mSDtfsCounter, 270 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 8319 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:39:41,596 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 8319 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:39:41,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2303 states. [2024-11-18 15:39:41,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2303 to 2303. [2024-11-18 15:39:41,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2303 states, 2277 states have (on average 1.8414580588493632) internal successors, (4193), 2279 states have internal predecessors, (4193), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-18 15:39:41,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 4229 transitions. [2024-11-18 15:39:41,763 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 4229 transitions. Word has length 90 [2024-11-18 15:39:41,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:39:41,766 INFO L471 AbstractCegarLoop]: Abstraction has 2303 states and 4229 transitions. [2024-11-18 15:39:41,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:39:41,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 4229 transitions. [2024-11-18 15:39:41,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-18 15:39:41,772 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:39:41,773 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] [2024-11-18 15:39:41,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 15:39:41,773 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:39:41,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:39:41,775 INFO L85 PathProgramCache]: Analyzing trace with hash -937947678, now seen corresponding path program 1 times [2024-11-18 15:39:41,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:39:41,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143227893] [2024-11-18 15:39:41,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:39:41,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:39:41,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:39:42,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:39:42,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:39:42,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143227893] [2024-11-18 15:39:42,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143227893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:39:42,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:39:42,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:39:42,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254934727] [2024-11-18 15:39:42,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:39:42,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:39:42,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:39:42,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:39:42,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:39:42,063 INFO L87 Difference]: Start difference. First operand 2303 states and 4229 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:39:42,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:39:42,643 INFO L93 Difference]: Finished difference Result 2659 states and 4769 transitions. [2024-11-18 15:39:42,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 15:39:42,644 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 2 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 90 [2024-11-18 15:39:42,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:39:42,664 INFO L225 Difference]: With dead ends: 2659 [2024-11-18 15:39:42,664 INFO L226 Difference]: Without dead ends: 2489 [2024-11-18 15:39:42,668 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:39:42,670 INFO L432 NwaCegarLoop]: 4168 mSDtfsCounter, 4433 mSDsluCounter, 8437 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4445 SdHoareTripleChecker+Valid, 12605 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:39:42,670 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4445 Valid, 12605 Invalid, 344 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [40 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:39:42,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2489 states. [2024-11-18 15:39:42,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2489 to 2476. [2024-11-18 15:39:42,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2476 states, 2430 states have (on average 1.8213991769547324) internal successors, (4426), 2433 states have internal predecessors, (4426), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2024-11-18 15:39:42,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2476 states to 2476 states and 4489 transitions. [2024-11-18 15:39:42,750 INFO L78 Accepts]: Start accepts. Automaton has 2476 states and 4489 transitions. Word has length 90 [2024-11-18 15:39:42,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:39:42,751 INFO L471 AbstractCegarLoop]: Abstraction has 2476 states and 4489 transitions. [2024-11-18 15:39:42,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:39:42,752 INFO L276 IsEmpty]: Start isEmpty. Operand 2476 states and 4489 transitions. [2024-11-18 15:39:42,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-18 15:39:42,759 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:39:42,759 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] [2024-11-18 15:39:42,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 15:39:42,759 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:39:42,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:39:42,760 INFO L85 PathProgramCache]: Analyzing trace with hash -2112607130, now seen corresponding path program 1 times [2024-11-18 15:39:42,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:39:42,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59546334] [2024-11-18 15:39:42,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:39:42,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:39:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:39:42,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:39:42,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:39:42,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59546334] [2024-11-18 15:39:42,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59546334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:39:42,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:39:42,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:39:42,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65485989] [2024-11-18 15:39:42,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:39:42,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:39:42,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:39:42,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:39:42,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:39:42,947 INFO L87 Difference]: Start difference. First operand 2476 states and 4489 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:39:43,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:39:43,524 INFO L93 Difference]: Finished difference Result 3034 states and 5338 transitions. [2024-11-18 15:39:43,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:39:43,525 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 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 90 [2024-11-18 15:39:43,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:39:43,538 INFO L225 Difference]: With dead ends: 3034 [2024-11-18 15:39:43,538 INFO L226 Difference]: Without dead ends: 2691 [2024-11-18 15:39:43,541 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:39:43,542 INFO L432 NwaCegarLoop]: 4306 mSDtfsCounter, 4427 mSDsluCounter, 12907 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4439 SdHoareTripleChecker+Valid, 17213 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:39:43,542 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4439 Valid, 17213 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:39:43,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2024-11-18 15:39:43,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 2638. [2024-11-18 15:39:43,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2638 states, 2572 states have (on average 1.802877138413686) internal successors, (4637), 2576 states have internal predecessors, (4637), 44 states have call successors, (44), 18 states have call predecessors, (44), 20 states have return successors, (48), 45 states have call predecessors, (48), 44 states have call successors, (48) [2024-11-18 15:39:43,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 4729 transitions. [2024-11-18 15:39:43,620 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 4729 transitions. Word has length 90 [2024-11-18 15:39:43,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:39:43,621 INFO L471 AbstractCegarLoop]: Abstraction has 2638 states and 4729 transitions. [2024-11-18 15:39:43,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:39:43,621 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 4729 transitions. [2024-11-18 15:39:43,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-18 15:39:43,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:39:43,623 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] [2024-11-18 15:39:43,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 15:39:43,623 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:39:43,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:39:43,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1225384284, now seen corresponding path program 1 times [2024-11-18 15:39:43,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:39:43,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414207208] [2024-11-18 15:39:43,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:39:43,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:39:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:39:43,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:39:43,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:39:43,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414207208] [2024-11-18 15:39:43,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414207208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:39:43,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:39:43,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:39:43,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063640352] [2024-11-18 15:39:43,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:39:43,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:39:43,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:39:43,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:39:43,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:39:43,767 INFO L87 Difference]: Start difference. First operand 2638 states and 4729 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:39:44,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:39:44,265 INFO L93 Difference]: Finished difference Result 3542 states and 6101 transitions. [2024-11-18 15:39:44,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:39:44,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 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 90 [2024-11-18 15:39:44,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:39:44,282 INFO L225 Difference]: With dead ends: 3542 [2024-11-18 15:39:44,282 INFO L226 Difference]: Without dead ends: 3037 [2024-11-18 15:39:44,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:39:44,288 INFO L432 NwaCegarLoop]: 4178 mSDtfsCounter, 4438 mSDsluCounter, 12608 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4450 SdHoareTripleChecker+Valid, 16786 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:39:44,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4450 Valid, 16786 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:39:44,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3037 states. [2024-11-18 15:39:44,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3037 to 2979. [2024-11-18 15:39:44,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2979 states, 2871 states have (on average 1.7715081853012888) internal successors, (5086), 2879 states have internal predecessors, (5086), 70 states have call successors, (70), 30 states have call predecessors, (70), 36 states have return successors, (86), 73 states have call predecessors, (86), 70 states have call successors, (86) [2024-11-18 15:39:44,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2979 states to 2979 states and 5242 transitions. [2024-11-18 15:39:44,396 INFO L78 Accepts]: Start accepts. Automaton has 2979 states and 5242 transitions. Word has length 90 [2024-11-18 15:39:44,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:39:44,396 INFO L471 AbstractCegarLoop]: Abstraction has 2979 states and 5242 transitions. [2024-11-18 15:39:44,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:39:44,396 INFO L276 IsEmpty]: Start isEmpty. Operand 2979 states and 5242 transitions. [2024-11-18 15:39:44,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-18 15:39:44,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:39:44,400 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] [2024-11-18 15:39:44,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 15:39:44,401 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:39:44,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:39:44,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1158540454, now seen corresponding path program 1 times [2024-11-18 15:39:44,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:39:44,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044686330] [2024-11-18 15:39:44,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:39:44,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:39:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:39:44,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:39:44,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:39:44,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044686330] [2024-11-18 15:39:44,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044686330] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:39:44,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:39:44,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:39:44,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236134864] [2024-11-18 15:39:44,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:39:44,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:39:44,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:39:44,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:39:44,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:39:44,529 INFO L87 Difference]: Start difference. First operand 2979 states and 5242 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:39:45,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:39:45,231 INFO L93 Difference]: Finished difference Result 4621 states and 7756 transitions. [2024-11-18 15:39:45,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:39:45,232 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 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 90 [2024-11-18 15:39:45,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:39:45,250 INFO L225 Difference]: With dead ends: 4621 [2024-11-18 15:39:45,251 INFO L226 Difference]: Without dead ends: 3775 [2024-11-18 15:39:45,255 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:39:45,257 INFO L432 NwaCegarLoop]: 4299 mSDtfsCounter, 4417 mSDsluCounter, 12886 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4429 SdHoareTripleChecker+Valid, 17185 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:39:45,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4429 Valid, 17185 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:39:45,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2024-11-18 15:39:45,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 3706. [2024-11-18 15:39:45,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3706 states, 3508 states have (on average 1.725769669327252) internal successors, (6054), 3530 states have internal predecessors, (6054), 122 states have call successors, (122), 54 states have call predecessors, (122), 74 states have return successors, (186), 129 states have call predecessors, (186), 122 states have call successors, (186) [2024-11-18 15:39:45,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3706 states to 3706 states and 6362 transitions. [2024-11-18 15:39:45,393 INFO L78 Accepts]: Start accepts. Automaton has 3706 states and 6362 transitions. Word has length 90 [2024-11-18 15:39:45,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:39:45,393 INFO L471 AbstractCegarLoop]: Abstraction has 3706 states and 6362 transitions. [2024-11-18 15:39:45,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:39:45,394 INFO L276 IsEmpty]: Start isEmpty. Operand 3706 states and 6362 transitions. [2024-11-18 15:39:45,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-18 15:39:45,396 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:39:45,396 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] [2024-11-18 15:39:45,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 15:39:45,397 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:39:45,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:39:45,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1235441252, now seen corresponding path program 1 times [2024-11-18 15:39:45,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:39:45,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835037757] [2024-11-18 15:39:45,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:39:45,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:39:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:39:45,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:39:45,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:39:45,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835037757] [2024-11-18 15:39:45,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835037757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:39:45,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:39:45,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:39:45,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138298755] [2024-11-18 15:39:45,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:39:45,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:39:45,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:39:45,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:39:45,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:39:45,537 INFO L87 Difference]: Start difference. First operand 3706 states and 6362 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:39:46,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:39:46,160 INFO L93 Difference]: Finished difference Result 7166 states and 11747 transitions. [2024-11-18 15:39:46,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:39:46,161 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 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 90 [2024-11-18 15:39:46,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:39:46,191 INFO L225 Difference]: With dead ends: 7166 [2024-11-18 15:39:46,191 INFO L226 Difference]: Without dead ends: 5593 [2024-11-18 15:39:46,200 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:39:46,201 INFO L432 NwaCegarLoop]: 4290 mSDtfsCounter, 4543 mSDsluCounter, 12856 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4560 SdHoareTripleChecker+Valid, 17146 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:39:46,202 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4560 Valid, 17146 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:39:46,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5593 states. [2024-11-18 15:39:46,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5593 to 5226. [2024-11-18 15:39:46,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5226 states, 4838 states have (on average 1.673418768085986) internal successors, (8096), 4906 states have internal predecessors, (8096), 218 states have call successors, (218), 102 states have call predecessors, (218), 168 states have return successors, (474), 233 states have call predecessors, (474), 218 states have call successors, (474) [2024-11-18 15:39:46,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5226 states to 5226 states and 8788 transitions. [2024-11-18 15:39:46,422 INFO L78 Accepts]: Start accepts. Automaton has 5226 states and 8788 transitions. Word has length 90 [2024-11-18 15:39:46,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:39:46,423 INFO L471 AbstractCegarLoop]: Abstraction has 5226 states and 8788 transitions. [2024-11-18 15:39:46,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:39:46,423 INFO L276 IsEmpty]: Start isEmpty. Operand 5226 states and 8788 transitions. [2024-11-18 15:39:46,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-18 15:39:46,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:39:46,427 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] [2024-11-18 15:39:46,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 15:39:46,427 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:39:46,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:39:46,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1151068254, now seen corresponding path program 1 times [2024-11-18 15:39:46,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:39:46,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603221989] [2024-11-18 15:39:46,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:39:46,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:39:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:39:46,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:39:46,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:39:46,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603221989] [2024-11-18 15:39:46,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603221989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:39:46,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:39:46,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:39:46,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372468236] [2024-11-18 15:39:46,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:39:46,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:39:46,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:39:46,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:39:46,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:39:46,537 INFO L87 Difference]: Start difference. First operand 5226 states and 8788 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:39:47,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:39:47,409 INFO L93 Difference]: Finished difference Result 12134 states and 19991 transitions. [2024-11-18 15:39:47,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:39:47,413 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 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 90 [2024-11-18 15:39:47,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:39:47,467 INFO L225 Difference]: With dead ends: 12134 [2024-11-18 15:39:47,467 INFO L226 Difference]: Without dead ends: 9041 [2024-11-18 15:39:47,480 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:39:47,481 INFO L432 NwaCegarLoop]: 4286 mSDtfsCounter, 4436 mSDsluCounter, 12844 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4447 SdHoareTripleChecker+Valid, 17130 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 15:39:47,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4447 Valid, 17130 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 15:39:47,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9041 states. [2024-11-18 15:39:47,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9041 to 8405. [2024-11-18 15:39:47,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8405 states, 7591 states have (on average 1.627190093531814) internal successors, (12352), 7805 states have internal predecessors, (12352), 402 states have call successors, (402), 198 states have call predecessors, (402), 410 states have return successors, (1426), 433 states have call predecessors, (1426), 402 states have call successors, (1426) [2024-11-18 15:39:47,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8405 states to 8405 states and 14180 transitions. [2024-11-18 15:39:47,896 INFO L78 Accepts]: Start accepts. Automaton has 8405 states and 14180 transitions. Word has length 90 [2024-11-18 15:39:47,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:39:47,897 INFO L471 AbstractCegarLoop]: Abstraction has 8405 states and 14180 transitions. [2024-11-18 15:39:47,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:39:47,898 INFO L276 IsEmpty]: Start isEmpty. Operand 8405 states and 14180 transitions. [2024-11-18 15:39:47,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-18 15:39:47,904 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:39:47,904 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] [2024-11-18 15:39:47,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 15:39:47,905 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:39:47,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:39:47,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1643694428, now seen corresponding path program 1 times [2024-11-18 15:39:47,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:39:47,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801291316] [2024-11-18 15:39:47,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:39:47,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:39:47,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:39:48,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:39:48,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:39:48,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801291316] [2024-11-18 15:39:48,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801291316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:39:48,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:39:48,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:39:48,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525968075] [2024-11-18 15:39:48,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:39:48,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:39:48,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:39:48,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:39:48,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:39:48,014 INFO L87 Difference]: Start difference. First operand 8405 states and 14180 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:39:49,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:39:49,181 INFO L93 Difference]: Finished difference Result 22491 states and 38721 transitions. [2024-11-18 15:39:49,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:39:49,182 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 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 90 [2024-11-18 15:39:49,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:39:49,281 INFO L225 Difference]: With dead ends: 22491 [2024-11-18 15:39:49,282 INFO L226 Difference]: Without dead ends: 16219 [2024-11-18 15:39:49,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:39:49,312 INFO L432 NwaCegarLoop]: 4284 mSDtfsCounter, 4473 mSDsluCounter, 12838 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4490 SdHoareTripleChecker+Valid, 17122 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:39:49,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4490 Valid, 17122 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:39:49,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16219 states. [2024-11-18 15:39:50,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16219 to 15362. [2024-11-18 15:39:50,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15362 states, 13550 states have (on average 1.5935055350553506) internal successors, (21592), 14218 states have internal predecessors, (21592), 754 states have call successors, (754), 390 states have call predecessors, (754), 1056 states have return successors, (4850), 817 states have call predecessors, (4850), 754 states have call successors, (4850) [2024-11-18 15:39:50,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15362 states to 15362 states and 27196 transitions. [2024-11-18 15:39:50,549 INFO L78 Accepts]: Start accepts. Automaton has 15362 states and 27196 transitions. Word has length 90 [2024-11-18 15:39:50,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:39:50,550 INFO L471 AbstractCegarLoop]: Abstraction has 15362 states and 27196 transitions. [2024-11-18 15:39:50,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:39:50,550 INFO L276 IsEmpty]: Start isEmpty. Operand 15362 states and 27196 transitions. [2024-11-18 15:39:50,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-18 15:39:50,565 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:39:50,566 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] [2024-11-18 15:39:50,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 15:39:50,566 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:39:50,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:39:50,567 INFO L85 PathProgramCache]: Analyzing trace with hash -689754270, now seen corresponding path program 1 times [2024-11-18 15:39:50,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:39:50,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017298410] [2024-11-18 15:39:50,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:39:50,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:39:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:39:50,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:39:50,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:39:50,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017298410] [2024-11-18 15:39:50,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017298410] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:39:50,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:39:50,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:39:50,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817955933] [2024-11-18 15:39:50,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:39:50,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:39:50,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:39:50,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:39:50,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:39:50,695 INFO L87 Difference]: Start difference. First operand 15362 states and 27196 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:39:52,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:39:52,314 INFO L93 Difference]: Finished difference Result 44798 states and 85199 transitions. [2024-11-18 15:39:52,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:39:52,315 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 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 90 [2024-11-18 15:39:52,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:39:52,511 INFO L225 Difference]: With dead ends: 44798 [2024-11-18 15:39:52,512 INFO L226 Difference]: Without dead ends: 31569 [2024-11-18 15:39:52,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:39:52,587 INFO L432 NwaCegarLoop]: 4281 mSDtfsCounter, 4438 mSDsluCounter, 12829 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4455 SdHoareTripleChecker+Valid, 17110 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:39:52,587 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4455 Valid, 17110 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:39:52,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31569 states. [2024-11-18 15:39:54,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31569 to 30395. [2024-11-18 15:39:54,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30395 states, 26133 states have (on average 1.566907741170168) internal successors, (40948), 28195 states have internal predecessors, (40948), 1426 states have call successors, (1426), 774 states have call predecessors, (1426), 2834 states have return successors, (17810), 1553 states have call predecessors, (17810), 1426 states have call successors, (17810) [2024-11-18 15:39:54,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30395 states to 30395 states and 60184 transitions. [2024-11-18 15:39:54,951 INFO L78 Accepts]: Start accepts. Automaton has 30395 states and 60184 transitions. Word has length 90 [2024-11-18 15:39:54,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:39:54,952 INFO L471 AbstractCegarLoop]: Abstraction has 30395 states and 60184 transitions. [2024-11-18 15:39:54,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:39:54,952 INFO L276 IsEmpty]: Start isEmpty. Operand 30395 states and 60184 transitions. [2024-11-18 15:39:54,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-18 15:39:54,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:39:54,974 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] [2024-11-18 15:39:54,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 15:39:54,974 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:39:54,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:39:54,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1905907996, now seen corresponding path program 1 times [2024-11-18 15:39:54,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:39:54,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668835830] [2024-11-18 15:39:54,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:39:54,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:39:54,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:39:55,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:39:55,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:39:55,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668835830] [2024-11-18 15:39:55,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668835830] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:39:55,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:39:55,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:39:55,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084344644] [2024-11-18 15:39:55,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:39:55,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:39:55,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:39:55,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:39:55,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:39:55,094 INFO L87 Difference]: Start difference. First operand 30395 states and 60184 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:39:58,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:39:58,631 INFO L93 Difference]: Finished difference Result 91977 states and 208533 transitions. [2024-11-18 15:39:58,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:39:58,631 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 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 90 [2024-11-18 15:39:58,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:39:59,354 INFO L225 Difference]: With dead ends: 91977 [2024-11-18 15:39:59,354 INFO L226 Difference]: Without dead ends: 63715 [2024-11-18 15:39:59,424 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:39:59,425 INFO L432 NwaCegarLoop]: 4276 mSDtfsCounter, 4392 mSDsluCounter, 12822 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4403 SdHoareTripleChecker+Valid, 17098 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:39:59,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4403 Valid, 17098 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:39:59,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63715 states. [2024-11-18 15:40:04,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63715 to 62432. [2024-11-18 15:40:04,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62432 states, 51892 states have (on average 1.5312572265474447) internal successors, (79460), 58200 states have internal predecessors, (79460), 2698 states have call successors, (2698), 1534 states have call predecessors, (2698), 7840 states have return successors, (68234), 2953 states have call predecessors, (68234), 2698 states have call successors, (68234) [2024-11-18 15:40:05,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62432 states to 62432 states and 150392 transitions. [2024-11-18 15:40:05,170 INFO L78 Accepts]: Start accepts. Automaton has 62432 states and 150392 transitions. Word has length 90 [2024-11-18 15:40:05,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:40:05,173 INFO L471 AbstractCegarLoop]: Abstraction has 62432 states and 150392 transitions. [2024-11-18 15:40:05,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:40:05,174 INFO L276 IsEmpty]: Start isEmpty. Operand 62432 states and 150392 transitions. [2024-11-18 15:40:05,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-18 15:40:05,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:40:05,213 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] [2024-11-18 15:40:05,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 15:40:05,213 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:40:05,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:40:05,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1657091874, now seen corresponding path program 1 times [2024-11-18 15:40:05,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:40:05,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404064882] [2024-11-18 15:40:05,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:40:05,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:40:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:40:05,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:40:05,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:40:05,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404064882] [2024-11-18 15:40:05,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404064882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:40:05,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:40:05,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 15:40:05,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985882039] [2024-11-18 15:40:05,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:40:05,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 15:40:05,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:40:05,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 15:40:05,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 15:40:05,288 INFO L87 Difference]: Start difference. First operand 62432 states and 150392 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:40:10,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:40:10,970 INFO L93 Difference]: Finished difference Result 156577 states and 375685 transitions. [2024-11-18 15:40:10,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:40:10,971 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 1 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 90 [2024-11-18 15:40:10,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:40:11,675 INFO L225 Difference]: With dead ends: 156577 [2024-11-18 15:40:11,676 INFO L226 Difference]: Without dead ends: 96279 [2024-11-18 15:40:12,182 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 15:40:12,185 INFO L432 NwaCegarLoop]: 4460 mSDtfsCounter, 4420 mSDsluCounter, 4393 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4420 SdHoareTripleChecker+Valid, 8853 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 15:40:12,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4420 Valid, 8853 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 15:40:12,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96279 states.