./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.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 7ec37a095871269c822e7d35e6d840f2de134a68f657807281a5c0e96980df26 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 03:23:28,216 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 03:23:28,286 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 03:23:28,291 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 03:23:28,291 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 03:23:28,316 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 03:23:28,317 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 03:23:28,317 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 03:23:28,318 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 03:23:28,322 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 03:23:28,322 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 03:23:28,322 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 03:23:28,323 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 03:23:28,323 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 03:23:28,324 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 03:23:28,324 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 03:23:28,324 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 03:23:28,324 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 03:23:28,325 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 03:23:28,325 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 03:23:28,327 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 03:23:28,328 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 03:23:28,328 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 03:23:28,328 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 03:23:28,328 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 03:23:28,329 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 03:23:28,329 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 03:23:28,329 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 03:23:28,330 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 03:23:28,330 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 03:23:28,331 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 03:23:28,331 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 03:23:28,331 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 03:23:28,332 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 03:23:28,332 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 03:23:28,332 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 03:23:28,332 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 03:23:28,332 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 03:23:28,333 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 03:23:28,333 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 03:23:28,333 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 03:23:28,333 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 03:23:28,334 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ec37a095871269c822e7d35e6d840f2de134a68f657807281a5c0e96980df26 [2024-11-22 03:23:28,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 03:23:28,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 03:23:28,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 03:23:28,686 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 03:23:28,687 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 03:23:28,688 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-1.c [2024-11-22 03:23:30,451 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 03:23:31,194 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 03:23:31,195 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-1.c [2024-11-22 03:23:31,244 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9630903c7/ec715307e6194fc59ba247da12b49730/FLAGfa80d94ac [2024-11-22 03:23:31,576 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9630903c7/ec715307e6194fc59ba247da12b49730 [2024-11-22 03:23:31,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 03:23:31,579 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 03:23:31,580 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 03:23:31,581 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 03:23:31,591 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 03:23:31,591 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:23:31" (1/1) ... [2024-11-22 03:23:31,592 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1600e0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:23:31, skipping insertion in model container [2024-11-22 03:23:31,592 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:23:31" (1/1) ... [2024-11-22 03:23:31,741 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 03:23:33,701 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_label45+token_ring.03.cil-1.c[380323,380336] [2024-11-22 03:23:33,727 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_label45+token_ring.03.cil-1.c[383339,383352] [2024-11-22 03:23:33,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 03:23:33,879 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 03:23:34,529 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_label45+token_ring.03.cil-1.c[380323,380336] [2024-11-22 03:23:34,534 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_label45+token_ring.03.cil-1.c[383339,383352] [2024-11-22 03:23:34,545 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 03:23:34,601 INFO L204 MainTranslator]: Completed translation [2024-11-22 03:23:34,602 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:23:34 WrapperNode [2024-11-22 03:23:34,603 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 03:23:34,604 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 03:23:34,604 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 03:23:34,604 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 03:23:34,610 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:23:34" (1/1) ... [2024-11-22 03:23:34,778 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:23:34" (1/1) ... [2024-11-22 03:23:35,035 INFO L138 Inliner]: procedures = 50, calls = 51, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 12699 [2024-11-22 03:23:35,035 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 03:23:35,036 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 03:23:35,036 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 03:23:35,036 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 03:23:35,049 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:23:34" (1/1) ... [2024-11-22 03:23:35,049 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:23:34" (1/1) ... [2024-11-22 03:23:35,129 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:23:34" (1/1) ... [2024-11-22 03:23:35,378 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]. [2024-11-22 03:23:35,382 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:23:34" (1/1) ... [2024-11-22 03:23:35,383 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:23:34" (1/1) ... [2024-11-22 03:23:35,716 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:23:34" (1/1) ... [2024-11-22 03:23:35,762 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:23:34" (1/1) ... [2024-11-22 03:23:35,788 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:23:34" (1/1) ... [2024-11-22 03:23:35,810 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:23:34" (1/1) ... [2024-11-22 03:23:35,859 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 03:23:35,861 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 03:23:35,861 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 03:23:35,861 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 03:23:35,862 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:23:34" (1/1) ... [2024-11-22 03:23:35,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 03:23:35,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:23:35,904 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) [2024-11-22 03:23:35,906 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 [2024-11-22 03:23:35,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 03:23:35,971 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-22 03:23:35,971 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-22 03:23:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-22 03:23:35,973 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-22 03:23:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-22 03:23:35,974 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-22 03:23:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-22 03:23:35,974 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-22 03:23:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-22 03:23:35,974 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-22 03:23:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-22 03:23:35,974 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-22 03:23:35,975 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-22 03:23:35,975 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-22 03:23:35,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 03:23:35,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 03:23:35,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 03:23:36,087 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 03:23:36,090 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 03:23:44,718 INFO L? ?]: Removed 1705 outVars from TransFormulas that were not future-live. [2024-11-22 03:23:44,719 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 03:23:44,769 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 03:23:44,770 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-22 03:23:44,770 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:23:44 BoogieIcfgContainer [2024-11-22 03:23:44,770 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 03:23:44,772 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 03:23:44,772 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 03:23:44,775 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 03:23:44,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:23:31" (1/3) ... [2024-11-22 03:23:44,776 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c3a415 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:23:44, skipping insertion in model container [2024-11-22 03:23:44,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:23:34" (2/3) ... [2024-11-22 03:23:44,777 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c3a415 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:23:44, skipping insertion in model container [2024-11-22 03:23:44,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:23:44" (3/3) ... [2024-11-22 03:23:44,778 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.03.cil-1.c [2024-11-22 03:23:44,793 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 03:23:44,794 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-22 03:23:44,889 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 03:23:44,895 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;@2d9ce34f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 03:23:44,895 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-22 03:23:44,907 INFO L276 IsEmpty]: Start isEmpty. Operand has 2352 states, 2323 states have (on average 1.8544984933275936) internal successors, (4308), 2328 states have internal predecessors, (4308), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-22 03:23:44,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-22 03:23:44,918 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:23:44,918 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] [2024-11-22 03:23:44,919 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:23:44,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:23:44,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1300199463, now seen corresponding path program 1 times [2024-11-22 03:23:44,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:23:44,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369183787] [2024-11-22 03:23:44,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:23:44,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:23:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:23:45,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 03:23:45,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:23:45,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369183787] [2024-11-22 03:23:45,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369183787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:23:45,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:23:45,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 03:23:45,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228328787] [2024-11-22 03:23:45,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:23:45,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 03:23:45,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:23:45,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 03:23:45,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 03:23:45,457 INFO L87 Difference]: Start difference. First operand has 2352 states, 2323 states have (on average 1.8544984933275936) internal successors, (4308), 2328 states have internal predecessors, (4308), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:23:46,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:23:46,176 INFO L93 Difference]: Finished difference Result 4859 states and 8943 transitions. [2024-11-22 03:23:46,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 03:23:46,179 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-22 03:23:46,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:23:46,198 INFO L225 Difference]: With dead ends: 4859 [2024-11-22 03:23:46,198 INFO L226 Difference]: Without dead ends: 2448 [2024-11-22 03:23:46,208 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 [2024-11-22 03:23:46,210 INFO L432 NwaCegarLoop]: 4217 mSDtfsCounter, 4429 mSDsluCounter, 8526 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4440 SdHoareTripleChecker+Valid, 12743 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 03:23:46,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4440 Valid, 12743 Invalid, 310 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [42 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 03:23:46,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2448 states. [2024-11-22 03:23:46,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2448 to 2435. [2024-11-22 03:23:46,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2435 states, 2389 states have (on average 1.8271243197990792) internal successors, (4365), 2393 states have internal predecessors, (4365), 31 states have call successors, (31), 13 states have call predecessors, (31), 13 states have return successors, (30), 29 states have call predecessors, (30), 29 states have call successors, (30) [2024-11-22 03:23:46,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2435 states to 2435 states and 4426 transitions. [2024-11-22 03:23:46,341 INFO L78 Accepts]: Start accepts. Automaton has 2435 states and 4426 transitions. Word has length 80 [2024-11-22 03:23:46,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:23:46,342 INFO L471 AbstractCegarLoop]: Abstraction has 2435 states and 4426 transitions. [2024-11-22 03:23:46,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:23:46,343 INFO L276 IsEmpty]: Start isEmpty. Operand 2435 states and 4426 transitions. [2024-11-22 03:23:46,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-22 03:23:46,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:23:46,347 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] [2024-11-22 03:23:46,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 03:23:46,348 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:23:46,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:23:46,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1753327317, now seen corresponding path program 1 times [2024-11-22 03:23:46,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:23:46,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394961657] [2024-11-22 03:23:46,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:23:46,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:23:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:23:46,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 03:23:46,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:23:46,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394961657] [2024-11-22 03:23:46,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394961657] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:23:46,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:23:46,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 03:23:46,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340360434] [2024-11-22 03:23:46,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:23:46,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 03:23:46,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:23:46,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 03:23:46,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:23:46,642 INFO L87 Difference]: Start difference. First operand 2435 states and 4426 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:23:47,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:23:47,289 INFO L93 Difference]: Finished difference Result 2925 states and 5165 transitions. [2024-11-22 03:23:47,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 03:23:47,290 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-22 03:23:47,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:23:47,301 INFO L225 Difference]: With dead ends: 2925 [2024-11-22 03:23:47,302 INFO L226 Difference]: Without dead ends: 2622 [2024-11-22 03:23:47,305 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 03:23:47,306 INFO L432 NwaCegarLoop]: 4272 mSDtfsCounter, 4353 mSDsluCounter, 12794 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4364 SdHoareTripleChecker+Valid, 17066 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 03:23:47,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4364 Valid, 17066 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 03:23:47,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2622 states. [2024-11-22 03:23:47,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2622 to 2577. [2024-11-22 03:23:47,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2577 states, 2512 states have (on average 1.8105095541401275) internal successors, (4548), 2517 states have internal predecessors, (4548), 43 states have call successors, (43), 19 states have call predecessors, (43), 20 states have return successors, (45), 42 states have call predecessors, (45), 41 states have call successors, (45) [2024-11-22 03:23:47,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2577 states to 2577 states and 4636 transitions. [2024-11-22 03:23:47,376 INFO L78 Accepts]: Start accepts. Automaton has 2577 states and 4636 transitions. Word has length 80 [2024-11-22 03:23:47,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:23:47,377 INFO L471 AbstractCegarLoop]: Abstraction has 2577 states and 4636 transitions. [2024-11-22 03:23:47,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:23:47,377 INFO L276 IsEmpty]: Start isEmpty. Operand 2577 states and 4636 transitions. [2024-11-22 03:23:47,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-22 03:23:47,380 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:23:47,380 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] [2024-11-22 03:23:47,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 03:23:47,381 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:23:47,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:23:47,382 INFO L85 PathProgramCache]: Analyzing trace with hash 67147479, now seen corresponding path program 1 times [2024-11-22 03:23:47,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:23:47,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027497718] [2024-11-22 03:23:47,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:23:47,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:23:47,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:23:47,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 03:23:47,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:23:47,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027497718] [2024-11-22 03:23:47,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027497718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:23:47,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:23:47,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 03:23:47,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086664304] [2024-11-22 03:23:47,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:23:47,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 03:23:47,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:23:47,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 03:23:47,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:23:47,508 INFO L87 Difference]: Start difference. First operand 2577 states and 4636 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:23:48,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:23:48,169 INFO L93 Difference]: Finished difference Result 3367 states and 5826 transitions. [2024-11-22 03:23:48,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 03:23:48,170 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-22 03:23:48,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:23:48,193 INFO L225 Difference]: With dead ends: 3367 [2024-11-22 03:23:48,196 INFO L226 Difference]: Without dead ends: 2922 [2024-11-22 03:23:48,199 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 [2024-11-22 03:23:48,204 INFO L432 NwaCegarLoop]: 4268 mSDtfsCounter, 4348 mSDsluCounter, 12782 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4359 SdHoareTripleChecker+Valid, 17050 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 03:23:48,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4359 Valid, 17050 Invalid, 528 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 03:23:48,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2024-11-22 03:23:48,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 2874. [2024-11-22 03:23:48,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2874 states, 2769 states have (on average 1.7815095702419645) internal successors, (4933), 2778 states have internal predecessors, (4933), 67 states have call successors, (67), 31 states have call predecessors, (67), 36 states have return successors, (81), 68 states have call predecessors, (81), 65 states have call successors, (81) [2024-11-22 03:23:48,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 5081 transitions. [2024-11-22 03:23:48,334 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 5081 transitions. Word has length 80 [2024-11-22 03:23:48,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:23:48,339 INFO L471 AbstractCegarLoop]: Abstraction has 2874 states and 5081 transitions. [2024-11-22 03:23:48,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:23:48,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 5081 transitions. [2024-11-22 03:23:48,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-22 03:23:48,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:23:48,344 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] [2024-11-22 03:23:48,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 03:23:48,345 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:23:48,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:23:48,349 INFO L85 PathProgramCache]: Analyzing trace with hash 12754581, now seen corresponding path program 1 times [2024-11-22 03:23:48,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:23:48,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16251171] [2024-11-22 03:23:48,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:23:48,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:23:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:23:48,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 03:23:48,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:23:48,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16251171] [2024-11-22 03:23:48,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16251171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:23:48,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:23:48,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 03:23:48,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032381304] [2024-11-22 03:23:48,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:23:48,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 03:23:48,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:23:48,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 03:23:48,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:23:48,501 INFO L87 Difference]: Start difference. First operand 2874 states and 5081 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:23:49,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:23:49,159 INFO L93 Difference]: Finished difference Result 4298 states and 7245 transitions. [2024-11-22 03:23:49,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 03:23:49,159 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-22 03:23:49,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:23:49,169 INFO L225 Difference]: With dead ends: 4298 [2024-11-22 03:23:49,169 INFO L226 Difference]: Without dead ends: 3556 [2024-11-22 03:23:49,171 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 [2024-11-22 03:23:49,172 INFO L432 NwaCegarLoop]: 4265 mSDtfsCounter, 4343 mSDsluCounter, 12773 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4354 SdHoareTripleChecker+Valid, 17038 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 03:23:49,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4354 Valid, 17038 Invalid, 528 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 03:23:49,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3556 states. [2024-11-22 03:23:49,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3556 to 3501. [2024-11-22 03:23:49,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3501 states, 3310 states have (on average 1.736858006042296) internal successors, (5749), 3333 states have internal predecessors, (5749), 115 states have call successors, (115), 55 states have call predecessors, (115), 74 states have return successors, (177), 120 states have call predecessors, (177), 113 states have call successors, (177) [2024-11-22 03:23:49,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3501 states to 3501 states and 6041 transitions. [2024-11-22 03:23:49,247 INFO L78 Accepts]: Start accepts. Automaton has 3501 states and 6041 transitions. Word has length 80 [2024-11-22 03:23:49,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:23:49,248 INFO L471 AbstractCegarLoop]: Abstraction has 3501 states and 6041 transitions. [2024-11-22 03:23:49,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:23:49,248 INFO L276 IsEmpty]: Start isEmpty. Operand 3501 states and 6041 transitions. [2024-11-22 03:23:49,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-22 03:23:49,250 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:23:49,250 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] [2024-11-22 03:23:49,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 03:23:49,252 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:23:49,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:23:49,252 INFO L85 PathProgramCache]: Analyzing trace with hash -404642025, now seen corresponding path program 1 times [2024-11-22 03:23:49,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:23:49,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413416858] [2024-11-22 03:23:49,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:23:49,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:23:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:23:49,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 03:23:49,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:23:49,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413416858] [2024-11-22 03:23:49,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413416858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:23:49,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:23:49,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 03:23:49,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122923132] [2024-11-22 03:23:49,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:23:49,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 03:23:49,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:23:49,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 03:23:49,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:23:49,361 INFO L87 Difference]: Start difference. First operand 3501 states and 6041 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:23:49,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:23:49,836 INFO L93 Difference]: Finished difference Result 6481 states and 10656 transitions. [2024-11-22 03:23:49,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 03:23:49,836 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-22 03:23:49,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:23:49,855 INFO L225 Difference]: With dead ends: 6481 [2024-11-22 03:23:49,856 INFO L226 Difference]: Without dead ends: 5112 [2024-11-22 03:23:49,862 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 [2024-11-22 03:23:49,863 INFO L432 NwaCegarLoop]: 4260 mSDtfsCounter, 4442 mSDsluCounter, 12753 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4457 SdHoareTripleChecker+Valid, 17013 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 03:23:49,864 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4457 Valid, 17013 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 03:23:49,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5112 states. [2024-11-22 03:23:50,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5112 to 4812. [2024-11-22 03:23:50,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4812 states, 4439 states have (on average 1.6825861680558685) internal successors, (7469), 4508 states have internal predecessors, (7469), 203 states have call successors, (203), 103 states have call predecessors, (203), 168 states have return successors, (457), 216 states have call predecessors, (457), 201 states have call successors, (457) [2024-11-22 03:23:50,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4812 states to 4812 states and 8129 transitions. [2024-11-22 03:23:50,162 INFO L78 Accepts]: Start accepts. Automaton has 4812 states and 8129 transitions. Word has length 80 [2024-11-22 03:23:50,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:23:50,162 INFO L471 AbstractCegarLoop]: Abstraction has 4812 states and 8129 transitions. [2024-11-22 03:23:50,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:23:50,163 INFO L276 IsEmpty]: Start isEmpty. Operand 4812 states and 8129 transitions. [2024-11-22 03:23:50,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-22 03:23:50,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:23:50,169 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] [2024-11-22 03:23:50,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 03:23:50,170 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:23:50,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:23:50,170 INFO L85 PathProgramCache]: Analyzing trace with hash 274630229, now seen corresponding path program 1 times [2024-11-22 03:23:50,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:23:50,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226291690] [2024-11-22 03:23:50,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:23:50,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:23:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:23:50,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 03:23:50,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:23:50,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226291690] [2024-11-22 03:23:50,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226291690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:23:50,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:23:50,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 03:23:50,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32026856] [2024-11-22 03:23:50,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:23:50,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 03:23:50,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:23:50,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 03:23:50,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:23:50,281 INFO L87 Difference]: Start difference. First operand 4812 states and 8129 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:23:50,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:23:50,953 INFO L93 Difference]: Finished difference Result 10704 states and 17674 transitions. [2024-11-22 03:23:50,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 03:23:50,954 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-22 03:23:50,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:23:50,993 INFO L225 Difference]: With dead ends: 10704 [2024-11-22 03:23:50,993 INFO L226 Difference]: Without dead ends: 8024 [2024-11-22 03:23:51,005 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 [2024-11-22 03:23:51,006 INFO L432 NwaCegarLoop]: 4256 mSDtfsCounter, 4355 mSDsluCounter, 12741 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4365 SdHoareTripleChecker+Valid, 16997 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 03:23:51,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4365 Valid, 16997 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 03:23:51,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8024 states. [2024-11-22 03:23:51,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8024 to 7439. [2024-11-22 03:23:51,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7439 states, 6656 states have (on average 1.6245492788461537) internal successors, (10813), 6871 states have internal predecessors, (10813), 371 states have call successors, (371), 199 states have call predecessors, (371), 410 states have return successors, (1393), 400 states have call predecessors, (1393), 369 states have call successors, (1393) [2024-11-22 03:23:51,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7439 states to 7439 states and 12577 transitions. [2024-11-22 03:23:51,810 INFO L78 Accepts]: Start accepts. Automaton has 7439 states and 12577 transitions. Word has length 80 [2024-11-22 03:23:51,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:23:51,818 INFO L471 AbstractCegarLoop]: Abstraction has 7439 states and 12577 transitions. [2024-11-22 03:23:51,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:23:51,819 INFO L276 IsEmpty]: Start isEmpty. Operand 7439 states and 12577 transitions. [2024-11-22 03:23:51,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-22 03:23:51,823 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:23:51,823 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] [2024-11-22 03:23:51,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 03:23:51,824 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:23:51,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:23:51,824 INFO L85 PathProgramCache]: Analyzing trace with hash -2058762409, now seen corresponding path program 1 times [2024-11-22 03:23:51,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:23:51,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949626763] [2024-11-22 03:23:51,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:23:51,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:23:51,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:23:51,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 03:23:51,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:23:51,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949626763] [2024-11-22 03:23:51,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949626763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:23:51,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:23:51,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 03:23:51,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874200392] [2024-11-22 03:23:51,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:23:51,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 03:23:51,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:23:51,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 03:23:51,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:23:51,935 INFO L87 Difference]: Start difference. First operand 7439 states and 12577 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:23:52,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:23:52,940 INFO L93 Difference]: Finished difference Result 18613 states and 32164 transitions. [2024-11-22 03:23:52,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 03:23:52,941 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-22 03:23:52,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:23:53,013 INFO L225 Difference]: With dead ends: 18613 [2024-11-22 03:23:53,014 INFO L226 Difference]: Without dead ends: 13306 [2024-11-22 03:23:53,029 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 [2024-11-22 03:23:53,030 INFO L432 NwaCegarLoop]: 4250 mSDtfsCounter, 4339 mSDsluCounter, 12725 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4354 SdHoareTripleChecker+Valid, 16975 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 03:23:53,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4354 Valid, 16975 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 03:23:53,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13306 states. [2024-11-22 03:23:53,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13306 to 12967. [2024-11-22 03:23:53,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12967 states, 11218 states have (on average 1.567035122125156) internal successors, (17579), 11887 states have internal predecessors, (17579), 691 states have call successors, (691), 391 states have call predecessors, (691), 1056 states have return successors, (4785), 752 states have call predecessors, (4785), 689 states have call successors, (4785) [2024-11-22 03:23:53,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12967 states to 12967 states and 23055 transitions. [2024-11-22 03:23:53,591 INFO L78 Accepts]: Start accepts. Automaton has 12967 states and 23055 transitions. Word has length 80 [2024-11-22 03:23:53,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:23:53,593 INFO L471 AbstractCegarLoop]: Abstraction has 12967 states and 23055 transitions. [2024-11-22 03:23:53,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:23:53,594 INFO L276 IsEmpty]: Start isEmpty. Operand 12967 states and 23055 transitions. [2024-11-22 03:23:53,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-22 03:23:53,607 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:23:53,607 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] [2024-11-22 03:23:53,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 03:23:53,608 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:23:53,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:23:53,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1498062631, now seen corresponding path program 1 times [2024-11-22 03:23:53,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:23:53,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372050887] [2024-11-22 03:23:53,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:23:53,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:23:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:23:53,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 03:23:53,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:23:53,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372050887] [2024-11-22 03:23:53,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372050887] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:23:53,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:23:53,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 03:23:53,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981482612] [2024-11-22 03:23:53,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:23:53,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 03:23:53,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:23:53,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 03:23:53,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 03:23:53,654 INFO L87 Difference]: Start difference. First operand 12967 states and 23055 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:23:54,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:23:54,870 INFO L93 Difference]: Finished difference Result 29581 states and 52414 transitions. [2024-11-22 03:23:54,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 03:23:54,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-22 03:23:54,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:23:54,951 INFO L225 Difference]: With dead ends: 29581 [2024-11-22 03:23:54,951 INFO L226 Difference]: Without dead ends: 18747 [2024-11-22 03:23:55,003 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 [2024-11-22 03:23:55,004 INFO L432 NwaCegarLoop]: 4391 mSDtfsCounter, 4358 mSDsluCounter, 4326 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4358 SdHoareTripleChecker+Valid, 8717 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 03:23:55,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4358 Valid, 8717 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 03:23:55,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18747 states. [2024-11-22 03:23:56,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18747 to 17904. [2024-11-22 03:23:56,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17904 states, 15380 states have (on average 1.5298439531859558) internal successors, (23529), 16294 states have internal predecessors, (23529), 1056 states have call successors, (1056), 589 states have call predecessors, (1056), 1466 states have return successors, (6143), 1084 states have call predecessors, (6143), 1054 states have call successors, (6143) [2024-11-22 03:23:56,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17904 states to 17904 states and 30728 transitions. [2024-11-22 03:23:56,382 INFO L78 Accepts]: Start accepts. Automaton has 17904 states and 30728 transitions. Word has length 80 [2024-11-22 03:23:56,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:23:56,387 INFO L471 AbstractCegarLoop]: Abstraction has 17904 states and 30728 transitions. [2024-11-22 03:23:56,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:23:56,387 INFO L276 IsEmpty]: Start isEmpty. Operand 17904 states and 30728 transitions. [2024-11-22 03:23:56,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-22 03:23:56,444 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:23:56,444 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:23:56,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 03:23:56,445 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:23:56,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:23:56,445 INFO L85 PathProgramCache]: Analyzing trace with hash 2122320658, now seen corresponding path program 1 times [2024-11-22 03:23:56,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:23:56,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963650098] [2024-11-22 03:23:56,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:23:56,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:23:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:23:56,514 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-22 03:23:56,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:23:56,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963650098] [2024-11-22 03:23:56,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963650098] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:23:56,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026568053] [2024-11-22 03:23:56,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:23:56,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:23:56,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:23:56,519 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 03:23:56,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 03:23:56,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:23:56,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-22 03:23:56,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:23:56,786 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-22 03:23:56,786 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 03:23:56,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026568053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:23:56,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 03:23:56,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-22 03:23:56,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119307809] [2024-11-22 03:23:56,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:23:56,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 03:23:56,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:23:56,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 03:23:56,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:23:56,799 INFO L87 Difference]: Start difference. First operand 17904 states and 30728 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 03:23:58,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:23:58,200 INFO L93 Difference]: Finished difference Result 49099 states and 84084 transitions. [2024-11-22 03:23:58,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 03:23:58,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 130 [2024-11-22 03:23:58,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:23:58,356 INFO L225 Difference]: With dead ends: 49099 [2024-11-22 03:23:58,356 INFO L226 Difference]: Without dead ends: 33328 [2024-11-22 03:23:58,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:23:58,409 INFO L432 NwaCegarLoop]: 4195 mSDtfsCounter, 4151 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4151 SdHoareTripleChecker+Valid, 4408 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 03:23:58,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4151 Valid, 4408 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 03:23:58,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33328 states. [2024-11-22 03:24:00,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33328 to 33128. [2024-11-22 03:24:01,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33128 states, 28138 states have (on average 1.5033051389579928) internal successors, (42300), 29963 states have internal predecessors, (42300), 2056 states have call successors, (2056), 1177 states have call predecessors, (2056), 2932 states have return successors, (12169), 2051 states have call predecessors, (12169), 2054 states have call successors, (12169) [2024-11-22 03:24:01,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33128 states to 33128 states and 56525 transitions. [2024-11-22 03:24:01,203 INFO L78 Accepts]: Start accepts. Automaton has 33128 states and 56525 transitions. Word has length 130 [2024-11-22 03:24:01,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:24:01,204 INFO L471 AbstractCegarLoop]: Abstraction has 33128 states and 56525 transitions. [2024-11-22 03:24:01,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 03:24:01,204 INFO L276 IsEmpty]: Start isEmpty. Operand 33128 states and 56525 transitions. [2024-11-22 03:24:01,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-22 03:24:01,274 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:24:01,275 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:24:01,283 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 03:24:01,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:24:01,480 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:24:01,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:24:01,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1621050866, now seen corresponding path program 1 times [2024-11-22 03:24:01,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:24:01,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854111812] [2024-11-22 03:24:01,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:24:01,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:24:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:24:01,565 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-22 03:24:01,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:24:01,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854111812] [2024-11-22 03:24:01,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854111812] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:24:01,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675995740] [2024-11-22 03:24:01,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:24:01,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:24:01,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:24:01,569 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 03:24:01,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 03:24:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:24:01,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-22 03:24:01,685 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:24:01,762 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 03:24:01,763 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 03:24:01,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675995740] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:24:01,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 03:24:01,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-22 03:24:01,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095909442] [2024-11-22 03:24:01,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:24:01,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 03:24:01,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:24:01,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 03:24:01,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:24:01,765 INFO L87 Difference]: Start difference. First operand 33128 states and 56525 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 03:24:04,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:24:04,889 INFO L93 Difference]: Finished difference Result 94425 states and 161343 transitions. [2024-11-22 03:24:04,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 03:24:04,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 130 [2024-11-22 03:24:04,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:24:05,218 INFO L225 Difference]: With dead ends: 94425 [2024-11-22 03:24:05,219 INFO L226 Difference]: Without dead ends: 63430 [2024-11-22 03:24:05,295 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:24:05,296 INFO L432 NwaCegarLoop]: 4195 mSDtfsCounter, 4145 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4145 SdHoareTripleChecker+Valid, 4408 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 03:24:05,297 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4145 Valid, 4408 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 03:24:05,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63430 states. [2024-11-22 03:24:09,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63430 to 63034. [2024-11-22 03:24:09,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63034 states, 53162 states have (on average 1.4870772356194275) internal successors, (79056), 56809 states have internal predecessors, (79056), 4006 states have call successors, (4006), 2353 states have call predecessors, (4006), 5864 states have return successors, (24171), 3935 states have call predecessors, (24171), 4004 states have call successors, (24171) [2024-11-22 03:24:09,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63034 states to 63034 states and 107233 transitions. [2024-11-22 03:24:10,010 INFO L78 Accepts]: Start accepts. Automaton has 63034 states and 107233 transitions. Word has length 130 [2024-11-22 03:24:10,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:24:10,010 INFO L471 AbstractCegarLoop]: Abstraction has 63034 states and 107233 transitions. [2024-11-22 03:24:10,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 03:24:10,011 INFO L276 IsEmpty]: Start isEmpty. Operand 63034 states and 107233 transitions. [2024-11-22 03:24:10,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-22 03:24:10,119 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:24:10,120 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:24:10,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 03:24:10,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-22 03:24:10,327 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:24:10,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:24:10,330 INFO L85 PathProgramCache]: Analyzing trace with hash 771500242, now seen corresponding path program 1 times [2024-11-22 03:24:10,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:24:10,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436518142] [2024-11-22 03:24:10,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:24:10,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:24:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:24:10,420 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-22 03:24:10,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:24:10,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436518142] [2024-11-22 03:24:10,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436518142] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:24:10,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229729996] [2024-11-22 03:24:10,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:24:10,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:24:10,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:24:10,426 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 03:24:10,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 03:24:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:24:10,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-22 03:24:10,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:24:10,562 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-22 03:24:10,564 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 03:24:10,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229729996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:24:10,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 03:24:10,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-22 03:24:10,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478311843] [2024-11-22 03:24:10,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:24:10,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 03:24:10,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:24:10,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 03:24:10,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:24:10,566 INFO L87 Difference]: Start difference. First operand 63034 states and 107233 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 03:24:16,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:24:16,462 INFO L93 Difference]: Finished difference Result 181941 states and 311905 transitions. [2024-11-22 03:24:16,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 03:24:16,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 130 [2024-11-22 03:24:16,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:24:17,255 INFO L225 Difference]: With dead ends: 181941 [2024-11-22 03:24:17,255 INFO L226 Difference]: Without dead ends: 121041 [2024-11-22 03:24:17,458 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:24:17,458 INFO L432 NwaCegarLoop]: 4401 mSDtfsCounter, 197 mSDsluCounter, 4195 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 8596 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 03:24:17,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 8596 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 03:24:17,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121041 states.