./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.13.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.13.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 0c76345a7418e3e3e542d36688efe541ee3690f4974296017bb3a3a18fafce6e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 03:00:50,944 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 03:00:51,012 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 03:00:51,018 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 03:00:51,018 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 03:00:51,046 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 03:00:51,048 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 03:00:51,049 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 03:00:51,049 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 03:00:51,050 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 03:00:51,051 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 03:00:51,052 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 03:00:51,052 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 03:00:51,052 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 03:00:51,053 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 03:00:51,055 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 03:00:51,055 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 03:00:51,055 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 03:00:51,055 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 03:00:51,055 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 03:00:51,056 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 03:00:51,060 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 03:00:51,060 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 03:00:51,061 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 03:00:51,061 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 03:00:51,061 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 03:00:51,061 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 03:00:51,061 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 03:00:51,062 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 03:00:51,062 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 03:00:51,063 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 03:00:51,063 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 03:00:51,063 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 03:00:51,063 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 03:00:51,064 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 03:00:51,064 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 03:00:51,065 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 03:00:51,065 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 03:00:51,066 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 03:00:51,066 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 03:00:51,066 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 03:00:51,067 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 03:00:51,067 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c76345a7418e3e3e542d36688efe541ee3690f4974296017bb3a3a18fafce6e [2024-10-24 03:00:51,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 03:00:51,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 03:00:51,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 03:00:51,354 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 03:00:51,355 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 03:00:51,356 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.13.cil-1.c [2024-10-24 03:00:52,721 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 03:00:52,943 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 03:00:52,944 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.13.cil-1.c [2024-10-24 03:00:52,957 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cbd79967/3c3102d6822a4aeab477f41b049e3ebb/FLAG42ee04fef [2024-10-24 03:00:53,287 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cbd79967/3c3102d6822a4aeab477f41b049e3ebb [2024-10-24 03:00:53,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 03:00:53,290 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 03:00:53,291 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 03:00:53,291 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 03:00:53,296 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 03:00:53,296 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:00:53" (1/1) ... [2024-10-24 03:00:53,297 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@615f132c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:00:53, skipping insertion in model container [2024-10-24 03:00:53,297 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:00:53" (1/1) ... [2024-10-24 03:00:53,345 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 03:00:53,480 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.13.cil-1.c[913,926] [2024-10-24 03:00:53,547 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.13.cil-1.c[5977,5990] [2024-10-24 03:00:53,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 03:00:53,666 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 03:00:53,677 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.13.cil-1.c[913,926] [2024-10-24 03:00:53,695 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.13.cil-1.c[5977,5990] [2024-10-24 03:00:53,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 03:00:53,804 INFO L204 MainTranslator]: Completed translation [2024-10-24 03:00:53,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:00:53 WrapperNode [2024-10-24 03:00:53,804 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 03:00:53,806 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 03:00:53,806 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 03:00:53,806 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 03:00:53,812 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:00:53" (1/1) ... [2024-10-24 03:00:53,825 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:00:53" (1/1) ... [2024-10-24 03:00:53,870 INFO L138 Inliner]: procedures = 74, calls = 88, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 1149 [2024-10-24 03:00:53,871 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 03:00:53,871 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 03:00:53,872 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 03:00:53,872 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 03:00:53,882 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:00:53" (1/1) ... [2024-10-24 03:00:53,883 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:00:53" (1/1) ... [2024-10-24 03:00:53,891 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:00:53" (1/1) ... [2024-10-24 03:00:53,926 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-24 03:00:53,927 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:00:53" (1/1) ... [2024-10-24 03:00:53,927 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:00:53" (1/1) ... [2024-10-24 03:00:53,950 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:00:53" (1/1) ... [2024-10-24 03:00:53,963 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:00:53" (1/1) ... [2024-10-24 03:00:53,966 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:00:53" (1/1) ... [2024-10-24 03:00:53,969 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:00:53" (1/1) ... [2024-10-24 03:00:53,974 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 03:00:53,974 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 03:00:53,975 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 03:00:53,975 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 03:00:53,975 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:00:53" (1/1) ... [2024-10-24 03:00:53,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 03:00:54,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:00:54,017 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 03:00:54,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 03:00:54,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 03:00:54,053 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-24 03:00:54,053 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-24 03:00:54,053 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2024-10-24 03:00:54,053 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2024-10-24 03:00:54,053 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-10-24 03:00:54,053 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-10-24 03:00:54,054 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-10-24 03:00:54,054 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-10-24 03:00:54,054 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-10-24 03:00:54,054 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-10-24 03:00:54,054 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-10-24 03:00:54,054 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-10-24 03:00:54,054 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-10-24 03:00:54,055 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-10-24 03:00:54,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 03:00:54,055 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-10-24 03:00:54,055 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-10-24 03:00:54,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 03:00:54,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 03:00:54,056 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-10-24 03:00:54,056 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-10-24 03:00:54,056 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-10-24 03:00:54,056 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-10-24 03:00:54,155 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 03:00:54,158 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 03:00:55,198 INFO L? ?]: Removed 137 outVars from TransFormulas that were not future-live. [2024-10-24 03:00:55,198 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 03:00:55,253 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 03:00:55,253 INFO L314 CfgBuilder]: Removed 20 assume(true) statements. [2024-10-24 03:00:55,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:00:55 BoogieIcfgContainer [2024-10-24 03:00:55,253 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 03:00:55,255 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 03:00:55,255 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 03:00:55,258 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 03:00:55,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:00:53" (1/3) ... [2024-10-24 03:00:55,259 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@745cc56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:00:55, skipping insertion in model container [2024-10-24 03:00:55,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:00:53" (2/3) ... [2024-10-24 03:00:55,259 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@745cc56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:00:55, skipping insertion in model container [2024-10-24 03:00:55,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:00:55" (3/3) ... [2024-10-24 03:00:55,260 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.13.cil-1.c [2024-10-24 03:00:55,275 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 03:00:55,275 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-24 03:00:55,338 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 03:00:55,344 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;@5223bbdc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 03:00:55,344 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-24 03:00:55,351 INFO L276 IsEmpty]: Start isEmpty. Operand has 442 states, 394 states have (on average 1.7309644670050761) internal successors, (682), 401 states have internal predecessors, (682), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2024-10-24 03:00:55,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-24 03:00:55,359 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:00:55,360 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] [2024-10-24 03:00:55,360 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:00:55,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:00:55,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1652009464, now seen corresponding path program 1 times [2024-10-24 03:00:55,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:00:55,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745816216] [2024-10-24 03:00:55,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:00:55,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:00:55,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:55,555 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 03:00:55,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:55,571 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 03:00:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:55,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:00:55,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:00:55,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745816216] [2024-10-24 03:00:55,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745816216] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:00:55,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:00:55,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 03:00:55,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573426574] [2024-10-24 03:00:55,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:00:55,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 03:00:55,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:00:55,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 03:00:55,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 03:00:55,607 INFO L87 Difference]: Start difference. First operand has 442 states, 394 states have (on average 1.7309644670050761) internal successors, (682), 401 states have internal predecessors, (682), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 03:00:56,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:00:56,316 INFO L93 Difference]: Finished difference Result 868 states and 1472 transitions. [2024-10-24 03:00:56,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 03:00:56,319 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2024-10-24 03:00:56,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:00:56,331 INFO L225 Difference]: With dead ends: 868 [2024-10-24 03:00:56,332 INFO L226 Difference]: Without dead ends: 444 [2024-10-24 03:00:56,336 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 03:00:56,339 INFO L432 NwaCegarLoop]: 391 mSDtfsCounter, 382 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 03:00:56,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 973 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 03:00:56,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2024-10-24 03:00:56,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 436. [2024-10-24 03:00:56,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 391 states have (on average 1.6214833759590792) internal successors, (634), 395 states have internal predecessors, (634), 35 states have call successors, (35), 10 states have call predecessors, (35), 8 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-10-24 03:00:56,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 700 transitions. [2024-10-24 03:00:56,399 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 700 transitions. Word has length 37 [2024-10-24 03:00:56,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:00:56,399 INFO L471 AbstractCegarLoop]: Abstraction has 436 states and 700 transitions. [2024-10-24 03:00:56,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 03:00:56,400 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 700 transitions. [2024-10-24 03:00:56,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-24 03:00:56,401 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:00:56,402 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] [2024-10-24 03:00:56,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 03:00:56,402 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:00:56,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:00:56,403 INFO L85 PathProgramCache]: Analyzing trace with hash -398974534, now seen corresponding path program 1 times [2024-10-24 03:00:56,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:00:56,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237395753] [2024-10-24 03:00:56,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:00:56,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:00:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:56,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 03:00:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:56,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 03:00:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:56,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:00:56,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:00:56,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237395753] [2024-10-24 03:00:56,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237395753] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:00:56,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:00:56,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 03:00:56,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171943628] [2024-10-24 03:00:56,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:00:56,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 03:00:56,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:00:56,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 03:00:56,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 03:00:56,484 INFO L87 Difference]: Start difference. First operand 436 states and 700 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 03:00:56,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:00:56,917 INFO L93 Difference]: Finished difference Result 555 states and 872 transitions. [2024-10-24 03:00:56,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 03:00:56,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2024-10-24 03:00:56,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:00:56,920 INFO L225 Difference]: With dead ends: 555 [2024-10-24 03:00:56,920 INFO L226 Difference]: Without dead ends: 499 [2024-10-24 03:00:56,921 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 03:00:56,922 INFO L432 NwaCegarLoop]: 383 mSDtfsCounter, 950 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 03:00:56,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 743 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 03:00:56,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2024-10-24 03:00:56,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 493. [2024-10-24 03:00:56,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 441 states have (on average 1.5941043083900226) internal successors, (703), 446 states have internal predecessors, (703), 39 states have call successors, (39), 12 states have call predecessors, (39), 11 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2024-10-24 03:00:56,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 783 transitions. [2024-10-24 03:00:56,947 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 783 transitions. Word has length 37 [2024-10-24 03:00:56,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:00:56,948 INFO L471 AbstractCegarLoop]: Abstraction has 493 states and 783 transitions. [2024-10-24 03:00:56,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 03:00:56,948 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 783 transitions. [2024-10-24 03:00:56,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-24 03:00:56,950 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:00:56,950 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] [2024-10-24 03:00:56,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 03:00:56,950 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:00:56,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:00:56,951 INFO L85 PathProgramCache]: Analyzing trace with hash -637486216, now seen corresponding path program 1 times [2024-10-24 03:00:56,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:00:56,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488565658] [2024-10-24 03:00:56,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:00:56,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:00:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:56,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 03:00:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:57,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 03:00:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:57,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:00:57,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:00:57,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488565658] [2024-10-24 03:00:57,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488565658] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:00:57,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:00:57,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 03:00:57,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852185197] [2024-10-24 03:00:57,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:00:57,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 03:00:57,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:00:57,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 03:00:57,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 03:00:57,038 INFO L87 Difference]: Start difference. First operand 493 states and 783 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 03:00:57,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:00:57,450 INFO L93 Difference]: Finished difference Result 727 states and 1127 transitions. [2024-10-24 03:00:57,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 03:00:57,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2024-10-24 03:00:57,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:00:57,454 INFO L225 Difference]: With dead ends: 727 [2024-10-24 03:00:57,454 INFO L226 Difference]: Without dead ends: 616 [2024-10-24 03:00:57,454 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 03:00:57,455 INFO L432 NwaCegarLoop]: 387 mSDtfsCounter, 968 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 03:00:57,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 750 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 03:00:57,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2024-10-24 03:00:57,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 593. [2024-10-24 03:00:57,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 528 states have (on average 1.5549242424242424) internal successors, (821), 534 states have internal predecessors, (821), 47 states have call successors, (47), 16 states have call predecessors, (47), 16 states have return successors, (55), 43 states have call predecessors, (55), 43 states have call successors, (55) [2024-10-24 03:00:57,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 923 transitions. [2024-10-24 03:00:57,492 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 923 transitions. Word has length 38 [2024-10-24 03:00:57,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:00:57,492 INFO L471 AbstractCegarLoop]: Abstraction has 593 states and 923 transitions. [2024-10-24 03:00:57,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 03:00:57,493 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 923 transitions. [2024-10-24 03:00:57,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-24 03:00:57,494 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:00:57,495 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] [2024-10-24 03:00:57,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 03:00:57,495 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:00:57,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:00:57,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1990408804, now seen corresponding path program 1 times [2024-10-24 03:00:57,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:00:57,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109556236] [2024-10-24 03:00:57,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:00:57,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:00:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:57,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 03:00:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:57,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 03:00:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:57,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:00:57,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:00:57,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109556236] [2024-10-24 03:00:57,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109556236] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:00:57,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:00:57,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 03:00:57,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667007384] [2024-10-24 03:00:57,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:00:57,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 03:00:57,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:00:57,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 03:00:57,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 03:00:57,540 INFO L87 Difference]: Start difference. First operand 593 states and 923 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 03:00:58,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:00:58,079 INFO L93 Difference]: Finished difference Result 1013 states and 1504 transitions. [2024-10-24 03:00:58,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 03:00:58,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2024-10-24 03:00:58,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:00:58,084 INFO L225 Difference]: With dead ends: 1013 [2024-10-24 03:00:58,084 INFO L226 Difference]: Without dead ends: 802 [2024-10-24 03:00:58,085 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 03:00:58,086 INFO L432 NwaCegarLoop]: 419 mSDtfsCounter, 365 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 03:00:58,086 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 1068 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 03:00:58,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2024-10-24 03:00:58,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 698. [2024-10-24 03:00:58,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 621 states have (on average 1.5297906602254427) internal successors, (950), 629 states have internal predecessors, (950), 53 states have call successors, (53), 22 states have call predecessors, (53), 22 states have return successors, (61), 47 states have call predecessors, (61), 49 states have call successors, (61) [2024-10-24 03:00:58,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1064 transitions. [2024-10-24 03:00:58,120 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1064 transitions. Word has length 39 [2024-10-24 03:00:58,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:00:58,121 INFO L471 AbstractCegarLoop]: Abstraction has 698 states and 1064 transitions. [2024-10-24 03:00:58,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 03:00:58,121 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1064 transitions. [2024-10-24 03:00:58,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-24 03:00:58,123 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:00:58,123 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:00:58,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 03:00:58,123 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:00:58,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:00:58,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1937183733, now seen corresponding path program 1 times [2024-10-24 03:00:58,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:00:58,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322137187] [2024-10-24 03:00:58,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:00:58,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:00:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:58,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 03:00:58,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:58,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 03:00:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:58,185 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 03:00:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:58,195 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 03:00:58,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:00:58,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322137187] [2024-10-24 03:00:58,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322137187] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:00:58,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:00:58,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 03:00:58,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015118324] [2024-10-24 03:00:58,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:00:58,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 03:00:58,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:00:58,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 03:00:58,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 03:00:58,198 INFO L87 Difference]: Start difference. First operand 698 states and 1064 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 03:00:58,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:00:58,718 INFO L93 Difference]: Finished difference Result 1003 states and 1486 transitions. [2024-10-24 03:00:58,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 03:00:58,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 54 [2024-10-24 03:00:58,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:00:58,722 INFO L225 Difference]: With dead ends: 1003 [2024-10-24 03:00:58,722 INFO L226 Difference]: Without dead ends: 792 [2024-10-24 03:00:58,723 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 03:00:58,724 INFO L432 NwaCegarLoop]: 438 mSDtfsCounter, 350 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 03:00:58,724 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 1113 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 03:00:58,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2024-10-24 03:00:58,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 758. [2024-10-24 03:00:58,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 672 states have (on average 1.5044642857142858) internal successors, (1011), 681 states have internal predecessors, (1011), 58 states have call successors, (58), 25 states have call predecessors, (58), 26 states have return successors, (70), 52 states have call predecessors, (70), 54 states have call successors, (70) [2024-10-24 03:00:58,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 1139 transitions. [2024-10-24 03:00:58,760 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 1139 transitions. Word has length 54 [2024-10-24 03:00:58,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:00:58,760 INFO L471 AbstractCegarLoop]: Abstraction has 758 states and 1139 transitions. [2024-10-24 03:00:58,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 03:00:58,760 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 1139 transitions. [2024-10-24 03:00:58,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-24 03:00:58,762 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:00:58,762 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 03:00:58,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 03:00:58,762 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:00:58,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:00:58,763 INFO L85 PathProgramCache]: Analyzing trace with hash 155537417, now seen corresponding path program 1 times [2024-10-24 03:00:58,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:00:58,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190862458] [2024-10-24 03:00:58,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:00:58,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:00:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:58,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 03:00:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:58,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 03:00:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:58,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:00:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:58,845 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 03:00:58,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:00:58,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190862458] [2024-10-24 03:00:58,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190862458] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:00:58,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:00:58,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 03:00:58,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929333621] [2024-10-24 03:00:58,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:00:58,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 03:00:58,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:00:58,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 03:00:58,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 03:00:58,848 INFO L87 Difference]: Start difference. First operand 758 states and 1139 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 03:00:59,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:00:59,287 INFO L93 Difference]: Finished difference Result 1247 states and 1799 transitions. [2024-10-24 03:00:59,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 03:00:59,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 59 [2024-10-24 03:00:59,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:00:59,293 INFO L225 Difference]: With dead ends: 1247 [2024-10-24 03:00:59,293 INFO L226 Difference]: Without dead ends: 912 [2024-10-24 03:00:59,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 03:00:59,295 INFO L432 NwaCegarLoop]: 393 mSDtfsCounter, 954 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 03:00:59,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 762 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 03:00:59,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2024-10-24 03:00:59,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 863. [2024-10-24 03:00:59,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 764 states have (on average 1.4712041884816753) internal successors, (1124), 774 states have internal predecessors, (1124), 65 states have call successors, (65), 30 states have call predecessors, (65), 32 states have return successors, (81), 59 states have call predecessors, (81), 61 states have call successors, (81) [2024-10-24 03:00:59,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1270 transitions. [2024-10-24 03:00:59,321 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1270 transitions. Word has length 59 [2024-10-24 03:00:59,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:00:59,321 INFO L471 AbstractCegarLoop]: Abstraction has 863 states and 1270 transitions. [2024-10-24 03:00:59,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 03:00:59,322 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1270 transitions. [2024-10-24 03:00:59,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-24 03:00:59,323 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:00:59,323 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 03:00:59,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 03:00:59,323 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:00:59,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:00:59,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1582269146, now seen corresponding path program 1 times [2024-10-24 03:00:59,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:00:59,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245448374] [2024-10-24 03:00:59,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:00:59,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:00:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:59,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 03:00:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:59,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 03:00:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:59,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 03:00:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:59,416 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 03:00:59,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:00:59,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245448374] [2024-10-24 03:00:59,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245448374] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 03:00:59,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113787980] [2024-10-24 03:00:59,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:00:59,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:00:59,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:00:59,421 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) [2024-10-24 03:00:59,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 03:00:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:59,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 03:00:59,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 03:00:59,557 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 03:00:59,557 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 03:00:59,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113787980] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:00:59,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 03:00:59,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-24 03:00:59,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789579180] [2024-10-24 03:00:59,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:00:59,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 03:00:59,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:00:59,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 03:00:59,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 03:00:59,559 INFO L87 Difference]: Start difference. First operand 863 states and 1270 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 03:00:59,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:00:59,656 INFO L93 Difference]: Finished difference Result 1256 states and 1815 transitions. [2024-10-24 03:00:59,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 03:00:59,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2024-10-24 03:00:59,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:00:59,660 INFO L225 Difference]: With dead ends: 1256 [2024-10-24 03:00:59,660 INFO L226 Difference]: Without dead ends: 861 [2024-10-24 03:00:59,663 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 03:00:59,664 INFO L432 NwaCegarLoop]: 687 mSDtfsCounter, 66 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 03:00:59,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 1309 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 03:00:59,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2024-10-24 03:00:59,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 823. [2024-10-24 03:00:59,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 730 states have (on average 1.463013698630137) internal successors, (1068), 740 states have internal predecessors, (1068), 61 states have call successors, (61), 28 states have call predecessors, (61), 30 states have return successors, (75), 55 states have call predecessors, (75), 57 states have call successors, (75) [2024-10-24 03:00:59,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1204 transitions. [2024-10-24 03:00:59,709 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1204 transitions. Word has length 60 [2024-10-24 03:00:59,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:00:59,710 INFO L471 AbstractCegarLoop]: Abstraction has 823 states and 1204 transitions. [2024-10-24 03:00:59,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 03:00:59,710 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1204 transitions. [2024-10-24 03:00:59,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-24 03:00:59,711 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:00:59,714 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 03:00:59,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 03:00:59,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:00:59,916 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:00:59,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:00:59,917 INFO L85 PathProgramCache]: Analyzing trace with hash -511845467, now seen corresponding path program 1 times [2024-10-24 03:00:59,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:00:59,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135856853] [2024-10-24 03:00:59,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:00:59,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:00:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:59,961 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 03:00:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:59,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 03:00:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:59,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 03:00:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:00,001 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 03:01:00,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:01:00,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135856853] [2024-10-24 03:01:00,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135856853] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 03:01:00,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709105551] [2024-10-24 03:01:00,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:01:00,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:01:00,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:01:00,004 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) [2024-10-24 03:01:00,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 03:01:00,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:00,109 INFO L255 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 03:01:00,110 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 03:01:00,130 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-24 03:01:00,130 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 03:01:00,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709105551] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:01:00,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 03:01:00,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2024-10-24 03:01:00,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801464405] [2024-10-24 03:01:00,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:01:00,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 03:01:00,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:01:00,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 03:01:00,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 03:01:00,134 INFO L87 Difference]: Start difference. First operand 823 states and 1204 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 03:01:00,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:01:00,244 INFO L93 Difference]: Finished difference Result 1184 states and 1696 transitions. [2024-10-24 03:01:00,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 03:01:00,245 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2024-10-24 03:01:00,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:01:00,248 INFO L225 Difference]: With dead ends: 1184 [2024-10-24 03:01:00,249 INFO L226 Difference]: Without dead ends: 831 [2024-10-24 03:01:00,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 03:01:00,251 INFO L432 NwaCegarLoop]: 644 mSDtfsCounter, 0 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1927 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 03:01:00,254 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1927 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 03:01:00,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2024-10-24 03:01:00,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 831. [2024-10-24 03:01:00,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 738 states have (on average 1.4498644986449865) internal successors, (1070), 748 states have internal predecessors, (1070), 61 states have call successors, (61), 28 states have call predecessors, (61), 30 states have return successors, (75), 55 states have call predecessors, (75), 57 states have call successors, (75) [2024-10-24 03:01:00,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1206 transitions. [2024-10-24 03:01:00,283 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1206 transitions. Word has length 60 [2024-10-24 03:01:00,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:01:00,284 INFO L471 AbstractCegarLoop]: Abstraction has 831 states and 1206 transitions. [2024-10-24 03:01:00,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 03:01:00,284 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1206 transitions. [2024-10-24 03:01:00,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-24 03:01:00,285 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:01:00,285 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 03:01:00,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 03:01:00,489 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,SelfDestructingSolverStorable7 [2024-10-24 03:01:00,490 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:01:00,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:01:00,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1355850969, now seen corresponding path program 1 times [2024-10-24 03:01:00,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:01:00,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657089794] [2024-10-24 03:01:00,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:01:00,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:01:00,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:00,529 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 03:01:00,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:00,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 03:01:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:00,561 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 03:01:00,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:00,569 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-24 03:01:00,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:01:00,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657089794] [2024-10-24 03:01:00,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657089794] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 03:01:00,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559210780] [2024-10-24 03:01:00,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:01:00,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:01:00,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:01:00,573 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) [2024-10-24 03:01:00,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 03:01:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:00,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 03:01:00,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 03:01:00,680 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 03:01:00,680 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 03:01:00,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559210780] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:01:00,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 03:01:00,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2024-10-24 03:01:00,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728760218] [2024-10-24 03:01:00,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:01:00,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 03:01:00,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:01:00,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 03:01:00,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 03:01:00,685 INFO L87 Difference]: Start difference. First operand 831 states and 1206 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 03:01:00,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:01:00,805 INFO L93 Difference]: Finished difference Result 1190 states and 1686 transitions. [2024-10-24 03:01:00,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 03:01:00,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2024-10-24 03:01:00,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:01:00,808 INFO L225 Difference]: With dead ends: 1190 [2024-10-24 03:01:00,808 INFO L226 Difference]: Without dead ends: 847 [2024-10-24 03:01:00,809 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 03:01:00,810 INFO L432 NwaCegarLoop]: 644 mSDtfsCounter, 0 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1927 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 03:01:00,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1927 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 03:01:00,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2024-10-24 03:01:00,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 847. [2024-10-24 03:01:00,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 754 states have (on average 1.43368700265252) internal successors, (1081), 764 states have internal predecessors, (1081), 61 states have call successors, (61), 28 states have call predecessors, (61), 30 states have return successors, (74), 55 states have call predecessors, (74), 57 states have call successors, (74) [2024-10-24 03:01:00,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1216 transitions. [2024-10-24 03:01:00,833 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1216 transitions. Word has length 60 [2024-10-24 03:01:00,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:01:00,833 INFO L471 AbstractCegarLoop]: Abstraction has 847 states and 1216 transitions. [2024-10-24 03:01:00,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 03:01:00,833 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1216 transitions. [2024-10-24 03:01:00,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-24 03:01:00,834 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:01:00,834 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 03:01:00,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 03:01:01,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:01:01,035 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:01:01,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:01:01,036 INFO L85 PathProgramCache]: Analyzing trace with hash 441788647, now seen corresponding path program 1 times [2024-10-24 03:01:01,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:01:01,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045238215] [2024-10-24 03:01:01,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:01:01,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:01:01,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:01,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 03:01:01,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:01,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 03:01:01,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:01,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 03:01:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:01,094 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-24 03:01:01,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:01:01,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045238215] [2024-10-24 03:01:01,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045238215] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:01:01,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:01:01,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 03:01:01,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310556542] [2024-10-24 03:01:01,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:01:01,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 03:01:01,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:01:01,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 03:01:01,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 03:01:01,096 INFO L87 Difference]: Start difference. First operand 847 states and 1216 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 03:01:01,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:01:01,527 INFO L93 Difference]: Finished difference Result 928 states and 1313 transitions. [2024-10-24 03:01:01,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 03:01:01,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 60 [2024-10-24 03:01:01,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:01:01,531 INFO L225 Difference]: With dead ends: 928 [2024-10-24 03:01:01,531 INFO L226 Difference]: Without dead ends: 925 [2024-10-24 03:01:01,531 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-24 03:01:01,532 INFO L432 NwaCegarLoop]: 403 mSDtfsCounter, 1591 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1593 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 03:01:01,532 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1593 Valid, 753 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 03:01:01,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2024-10-24 03:01:01,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 846. [2024-10-24 03:01:01,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 754 states have (on average 1.4310344827586208) internal successors, (1079), 763 states have internal predecessors, (1079), 60 states have call successors, (60), 28 states have call predecessors, (60), 30 states have return successors, (74), 55 states have call predecessors, (74), 57 states have call successors, (74) [2024-10-24 03:01:01,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1213 transitions. [2024-10-24 03:01:01,579 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1213 transitions. Word has length 60 [2024-10-24 03:01:01,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:01:01,579 INFO L471 AbstractCegarLoop]: Abstraction has 846 states and 1213 transitions. [2024-10-24 03:01:01,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 03:01:01,579 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1213 transitions. [2024-10-24 03:01:01,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 03:01:01,581 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:01:01,581 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 03:01:01,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 03:01:01,581 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:01:01,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:01:01,582 INFO L85 PathProgramCache]: Analyzing trace with hash 809038442, now seen corresponding path program 1 times [2024-10-24 03:01:01,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:01:01,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724031770] [2024-10-24 03:01:01,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:01:01,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:01:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:01,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 03:01:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:01,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 03:01:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:01,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 03:01:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:01,676 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-24 03:01:01,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:01:01,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724031770] [2024-10-24 03:01:01,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724031770] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 03:01:01,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264462762] [2024-10-24 03:01:01,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:01:01,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:01:01,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:01:01,678 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 03:01:01,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 03:01:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:01,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 03:01:01,772 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 03:01:01,911 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:01:01,911 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 03:01:01,959 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-24 03:01:01,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264462762] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 03:01:01,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 03:01:01,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 8 [2024-10-24 03:01:01,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318072125] [2024-10-24 03:01:01,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 03:01:01,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 03:01:01,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:01:01,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 03:01:01,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-24 03:01:01,961 INFO L87 Difference]: Start difference. First operand 846 states and 1213 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 6 states have call successors, (10), 6 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-10-24 03:01:02,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:01:02,811 INFO L93 Difference]: Finished difference Result 1521 states and 2063 transitions. [2024-10-24 03:01:02,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 03:01:02,811 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 6 states have call successors, (10), 6 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 61 [2024-10-24 03:01:02,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:01:02,816 INFO L225 Difference]: With dead ends: 1521 [2024-10-24 03:01:02,816 INFO L226 Difference]: Without dead ends: 1518 [2024-10-24 03:01:02,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-10-24 03:01:02,817 INFO L432 NwaCegarLoop]: 449 mSDtfsCounter, 1130 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 1725 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 2013 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 03:01:02,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1164 Valid, 2013 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1725 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 03:01:02,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2024-10-24 03:01:02,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1139. [2024-10-24 03:01:02,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1011 states have (on average 1.387734915924827) internal successors, (1403), 1026 states have internal predecessors, (1403), 79 states have call successors, (79), 41 states have call predecessors, (79), 47 states have return successors, (104), 72 states have call predecessors, (104), 76 states have call successors, (104) [2024-10-24 03:01:02,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1586 transitions. [2024-10-24 03:01:02,867 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1586 transitions. Word has length 61 [2024-10-24 03:01:02,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:01:02,868 INFO L471 AbstractCegarLoop]: Abstraction has 1139 states and 1586 transitions. [2024-10-24 03:01:02,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 6 states have call successors, (10), 6 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-10-24 03:01:02,868 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1586 transitions. [2024-10-24 03:01:02,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-24 03:01:02,869 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:01:02,869 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:01:02,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 03:01:03,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:01:03,070 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:01:03,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:01:03,071 INFO L85 PathProgramCache]: Analyzing trace with hash -969139261, now seen corresponding path program 2 times [2024-10-24 03:01:03,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:01:03,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435739234] [2024-10-24 03:01:03,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:01:03,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:01:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:03,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 03:01:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:03,097 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 03:01:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:03,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 03:01:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:03,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 03:01:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:03,105 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-24 03:01:03,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:01:03,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435739234] [2024-10-24 03:01:03,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435739234] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:01:03,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:01:03,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 03:01:03,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51304837] [2024-10-24 03:01:03,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:01:03,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 03:01:03,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:01:03,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 03:01:03,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 03:01:03,106 INFO L87 Difference]: Start difference. First operand 1139 states and 1586 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-24 03:01:03,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:01:03,508 INFO L93 Difference]: Finished difference Result 1735 states and 2343 transitions. [2024-10-24 03:01:03,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 03:01:03,508 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 78 [2024-10-24 03:01:03,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:01:03,512 INFO L225 Difference]: With dead ends: 1735 [2024-10-24 03:01:03,513 INFO L226 Difference]: Without dead ends: 1146 [2024-10-24 03:01:03,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 03:01:03,514 INFO L432 NwaCegarLoop]: 399 mSDtfsCounter, 965 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 03:01:03,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 773 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 03:01:03,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2024-10-24 03:01:03,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1075. [2024-10-24 03:01:03,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 954 states have (on average 1.3867924528301887) internal successors, (1323), 969 states have internal predecessors, (1323), 76 states have call successors, (76), 38 states have call predecessors, (76), 43 states have return successors, (99), 68 states have call predecessors, (99), 73 states have call successors, (99) [2024-10-24 03:01:03,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1498 transitions. [2024-10-24 03:01:03,574 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1498 transitions. Word has length 78 [2024-10-24 03:01:03,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:01:03,575 INFO L471 AbstractCegarLoop]: Abstraction has 1075 states and 1498 transitions. [2024-10-24 03:01:03,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-24 03:01:03,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1498 transitions. [2024-10-24 03:01:03,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-24 03:01:03,576 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:01:03,576 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:01:03,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 03:01:03,576 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:01:03,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:01:03,577 INFO L85 PathProgramCache]: Analyzing trace with hash 827307527, now seen corresponding path program 1 times [2024-10-24 03:01:03,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:01:03,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762569412] [2024-10-24 03:01:03,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:01:03,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:01:03,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:03,609 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 03:01:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:03,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 03:01:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:03,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-24 03:01:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:03,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 03:01:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:03,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-24 03:01:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:03,631 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-24 03:01:03,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:01:03,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762569412] [2024-10-24 03:01:03,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762569412] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 03:01:03,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623539847] [2024-10-24 03:01:03,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:01:03,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:01:03,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:01:03,637 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 03:01:03,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 03:01:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:03,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 03:01:03,731 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 03:01:03,743 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-24 03:01:03,743 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 03:01:03,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623539847] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:01:03,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 03:01:03,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-24 03:01:03,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826082916] [2024-10-24 03:01:03,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:01:03,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 03:01:03,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:01:03,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 03:01:03,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 03:01:03,744 INFO L87 Difference]: Start difference. First operand 1075 states and 1498 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-24 03:01:03,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:01:03,830 INFO L93 Difference]: Finished difference Result 1356 states and 1847 transitions. [2024-10-24 03:01:03,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 03:01:03,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 92 [2024-10-24 03:01:03,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:01:03,833 INFO L225 Difference]: With dead ends: 1356 [2024-10-24 03:01:03,833 INFO L226 Difference]: Without dead ends: 377 [2024-10-24 03:01:03,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 03:01:03,835 INFO L432 NwaCegarLoop]: 678 mSDtfsCounter, 54 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 03:01:03,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 1301 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 03:01:03,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-10-24 03:01:03,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2024-10-24 03:01:03,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 341 states have (on average 1.6422287390029326) internal successors, (560), 343 states have internal predecessors, (560), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-10-24 03:01:03,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 616 transitions. [2024-10-24 03:01:03,845 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 616 transitions. Word has length 92 [2024-10-24 03:01:03,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:01:03,846 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 616 transitions. [2024-10-24 03:01:03,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-24 03:01:03,846 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 616 transitions. [2024-10-24 03:01:03,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-24 03:01:03,847 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:01:03,847 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:01:03,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-24 03:01:04,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-24 03:01:04,048 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:01:04,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:01:04,048 INFO L85 PathProgramCache]: Analyzing trace with hash -999009792, now seen corresponding path program 1 times [2024-10-24 03:01:04,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:01:04,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844322831] [2024-10-24 03:01:04,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:01:04,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:01:04,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:04,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:01:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:04,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 03:01:04,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:04,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 03:01:04,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:04,191 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-24 03:01:04,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:04,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-24 03:01:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:04,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:01:04,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:01:04,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844322831] [2024-10-24 03:01:04,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844322831] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:01:04,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:01:04,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 03:01:04,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194512246] [2024-10-24 03:01:04,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:01:04,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 03:01:04,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:01:04,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 03:01:04,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 03:01:04,200 INFO L87 Difference]: Start difference. First operand 377 states and 616 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:01:05,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:01:05,661 INFO L93 Difference]: Finished difference Result 887 states and 1472 transitions. [2024-10-24 03:01:05,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 03:01:05,661 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2024-10-24 03:01:05,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:01:05,664 INFO L225 Difference]: With dead ends: 887 [2024-10-24 03:01:05,664 INFO L226 Difference]: Without dead ends: 517 [2024-10-24 03:01:05,665 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-24 03:01:05,665 INFO L432 NwaCegarLoop]: 327 mSDtfsCounter, 1060 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-24 03:01:05,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 692 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-24 03:01:05,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2024-10-24 03:01:05,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 377. [2024-10-24 03:01:05,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 341 states have (on average 1.6392961876832846) internal successors, (559), 343 states have internal predecessors, (559), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-10-24 03:01:05,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 615 transitions. [2024-10-24 03:01:05,682 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 615 transitions. Word has length 172 [2024-10-24 03:01:05,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:01:05,683 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 615 transitions. [2024-10-24 03:01:05,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:01:05,683 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 615 transitions. [2024-10-24 03:01:05,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-24 03:01:05,684 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:01:05,684 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:01:05,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 03:01:05,684 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:01:05,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:01:05,685 INFO L85 PathProgramCache]: Analyzing trace with hash 725598530, now seen corresponding path program 1 times [2024-10-24 03:01:05,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:01:05,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001054921] [2024-10-24 03:01:05,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:01:05,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:01:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:05,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:01:05,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:05,781 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 03:01:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:05,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 03:01:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:05,850 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-24 03:01:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:05,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-24 03:01:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:05,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:01:05,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:01:05,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001054921] [2024-10-24 03:01:05,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001054921] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:01:05,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:01:05,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 03:01:05,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390927811] [2024-10-24 03:01:05,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:01:05,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 03:01:05,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:01:05,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 03:01:05,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 03:01:05,864 INFO L87 Difference]: Start difference. First operand 377 states and 615 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:01:07,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:01:07,361 INFO L93 Difference]: Finished difference Result 879 states and 1455 transitions. [2024-10-24 03:01:07,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 03:01:07,362 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2024-10-24 03:01:07,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:01:07,364 INFO L225 Difference]: With dead ends: 879 [2024-10-24 03:01:07,365 INFO L226 Difference]: Without dead ends: 517 [2024-10-24 03:01:07,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-24 03:01:07,366 INFO L432 NwaCegarLoop]: 326 mSDtfsCounter, 1051 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-24 03:01:07,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1076 Valid, 690 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-24 03:01:07,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2024-10-24 03:01:07,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 377. [2024-10-24 03:01:07,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 341 states have (on average 1.6363636363636365) internal successors, (558), 343 states have internal predecessors, (558), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-10-24 03:01:07,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 614 transitions. [2024-10-24 03:01:07,384 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 614 transitions. Word has length 172 [2024-10-24 03:01:07,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:01:07,384 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 614 transitions. [2024-10-24 03:01:07,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:01:07,385 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 614 transitions. [2024-10-24 03:01:07,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-24 03:01:07,385 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:01:07,386 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:01:07,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 03:01:07,386 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:01:07,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:01:07,386 INFO L85 PathProgramCache]: Analyzing trace with hash -255356284, now seen corresponding path program 1 times [2024-10-24 03:01:07,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:01:07,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060395079] [2024-10-24 03:01:07,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:01:07,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:01:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:07,460 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:01:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:07,526 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 03:01:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:07,636 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 03:01:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:07,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-24 03:01:07,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:07,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-24 03:01:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:07,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:01:07,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:01:07,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060395079] [2024-10-24 03:01:07,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060395079] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:01:07,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:01:07,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 03:01:07,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144913836] [2024-10-24 03:01:07,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:01:07,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 03:01:07,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:01:07,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 03:01:07,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 03:01:07,662 INFO L87 Difference]: Start difference. First operand 377 states and 614 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:01:10,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:01:10,786 INFO L93 Difference]: Finished difference Result 1392 states and 2318 transitions. [2024-10-24 03:01:10,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 03:01:10,786 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (6), 4 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 172 [2024-10-24 03:01:10,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:01:10,791 INFO L225 Difference]: With dead ends: 1392 [2024-10-24 03:01:10,791 INFO L226 Difference]: Without dead ends: 1035 [2024-10-24 03:01:10,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-24 03:01:10,793 INFO L432 NwaCegarLoop]: 292 mSDtfsCounter, 1601 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 2471 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 2591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-24 03:01:10,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1621 Valid, 1167 Invalid, 2591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2471 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-24 03:01:10,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2024-10-24 03:01:10,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 754. [2024-10-24 03:01:10,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 689 states have (on average 1.6473149492017416) internal successors, (1135), 692 states have internal predecessors, (1135), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2024-10-24 03:01:10,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1238 transitions. [2024-10-24 03:01:10,843 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1238 transitions. Word has length 172 [2024-10-24 03:01:10,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:01:10,844 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 1238 transitions. [2024-10-24 03:01:10,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:01:10,844 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1238 transitions. [2024-10-24 03:01:10,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-24 03:01:10,845 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:01:10,846 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:01:10,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 03:01:10,846 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:01:10,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:01:10,846 INFO L85 PathProgramCache]: Analyzing trace with hash 749748992, now seen corresponding path program 1 times [2024-10-24 03:01:10,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:01:10,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837994868] [2024-10-24 03:01:10,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:01:10,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:01:10,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:10,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:01:10,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:11,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 03:01:11,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:11,135 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 03:01:11,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:11,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-24 03:01:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:11,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-24 03:01:11,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:11,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:01:11,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:01:11,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837994868] [2024-10-24 03:01:11,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837994868] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:01:11,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:01:11,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:01:11,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149855437] [2024-10-24 03:01:11,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:01:11,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:01:11,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:01:11,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:01:11,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:01:11,166 INFO L87 Difference]: Start difference. First operand 754 states and 1238 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:01:14,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:01:14,730 INFO L93 Difference]: Finished difference Result 2307 states and 3848 transitions. [2024-10-24 03:01:14,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 03:01:14,730 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 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 172 [2024-10-24 03:01:14,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:01:14,735 INFO L225 Difference]: With dead ends: 2307 [2024-10-24 03:01:14,736 INFO L226 Difference]: Without dead ends: 1573 [2024-10-24 03:01:14,737 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 03:01:14,738 INFO L432 NwaCegarLoop]: 514 mSDtfsCounter, 1638 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 4019 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1658 SdHoareTripleChecker+Valid, 2232 SdHoareTripleChecker+Invalid, 4086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 4019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-10-24 03:01:14,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1658 Valid, 2232 Invalid, 4086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 4019 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-24 03:01:14,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2024-10-24 03:01:14,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1102. [2024-10-24 03:01:14,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 1008 states have (on average 1.6408730158730158) internal successors, (1654), 1012 states have internal predecessors, (1654), 73 states have call successors, (73), 19 states have call predecessors, (73), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2024-10-24 03:01:14,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1803 transitions. [2024-10-24 03:01:14,814 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1803 transitions. Word has length 172 [2024-10-24 03:01:14,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:01:14,814 INFO L471 AbstractCegarLoop]: Abstraction has 1102 states and 1803 transitions. [2024-10-24 03:01:14,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:01:14,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1803 transitions. [2024-10-24 03:01:14,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-24 03:01:14,815 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:01:14,815 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:01:14,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 03:01:14,816 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:01:14,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:01:14,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1135611394, now seen corresponding path program 1 times [2024-10-24 03:01:14,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:01:14,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795635721] [2024-10-24 03:01:14,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:01:14,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:01:14,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:14,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:01:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:14,964 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 03:01:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:15,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 03:01:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:15,035 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-24 03:01:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:15,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-24 03:01:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:15,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:01:15,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:01:15,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795635721] [2024-10-24 03:01:15,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795635721] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:01:15,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:01:15,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:01:15,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541825924] [2024-10-24 03:01:15,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:01:15,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:01:15,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:01:15,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:01:15,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:01:15,046 INFO L87 Difference]: Start difference. First operand 1102 states and 1803 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:01:18,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:01:18,380 INFO L93 Difference]: Finished difference Result 3648 states and 6075 transitions. [2024-10-24 03:01:18,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 03:01:18,381 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 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 172 [2024-10-24 03:01:18,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:01:18,389 INFO L225 Difference]: With dead ends: 3648 [2024-10-24 03:01:18,389 INFO L226 Difference]: Without dead ends: 2566 [2024-10-24 03:01:18,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 03:01:18,392 INFO L432 NwaCegarLoop]: 512 mSDtfsCounter, 1636 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 4015 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1656 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 4084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 4015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-24 03:01:18,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1656 Valid, 2230 Invalid, 4084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 4015 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-24 03:01:18,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2024-10-24 03:01:18,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 1799. [2024-10-24 03:01:18,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1799 states, 1647 states have (on average 1.6350941105039465) internal successors, (2693), 1653 states have internal predecessors, (2693), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2024-10-24 03:01:18,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1799 states to 1799 states and 2938 transitions. [2024-10-24 03:01:18,481 INFO L78 Accepts]: Start accepts. Automaton has 1799 states and 2938 transitions. Word has length 172 [2024-10-24 03:01:18,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:01:18,481 INFO L471 AbstractCegarLoop]: Abstraction has 1799 states and 2938 transitions. [2024-10-24 03:01:18,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:01:18,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1799 states and 2938 transitions. [2024-10-24 03:01:18,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-24 03:01:18,483 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:01:18,483 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:01:18,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 03:01:18,483 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:01:18,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:01:18,483 INFO L85 PathProgramCache]: Analyzing trace with hash 870963904, now seen corresponding path program 1 times [2024-10-24 03:01:18,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:01:18,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464063970] [2024-10-24 03:01:18,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:01:18,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:01:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:18,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:01:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:18,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 03:01:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:18,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 03:01:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:18,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-24 03:01:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:18,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-24 03:01:18,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:18,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:01:18,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:01:18,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464063970] [2024-10-24 03:01:18,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464063970] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:01:18,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:01:18,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:01:18,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660356899] [2024-10-24 03:01:18,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:01:18,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:01:18,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:01:18,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:01:18,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:01:18,790 INFO L87 Difference]: Start difference. First operand 1799 states and 2938 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:01:20,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:01:20,370 INFO L93 Difference]: Finished difference Result 4333 states and 7201 transitions. [2024-10-24 03:01:20,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 03:01:20,371 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 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 172 [2024-10-24 03:01:20,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:01:20,380 INFO L225 Difference]: With dead ends: 4333 [2024-10-24 03:01:20,380 INFO L226 Difference]: Without dead ends: 2554 [2024-10-24 03:01:20,385 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-24 03:01:20,385 INFO L432 NwaCegarLoop]: 278 mSDtfsCounter, 1437 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 1748 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 1849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-24 03:01:20,385 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1458 Valid, 959 Invalid, 1849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1748 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-24 03:01:20,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2024-10-24 03:01:20,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 1799. [2024-10-24 03:01:20,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1799 states, 1647 states have (on average 1.6320582877959928) internal successors, (2688), 1653 states have internal predecessors, (2688), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2024-10-24 03:01:20,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1799 states to 1799 states and 2933 transitions. [2024-10-24 03:01:20,482 INFO L78 Accepts]: Start accepts. Automaton has 1799 states and 2933 transitions. Word has length 172 [2024-10-24 03:01:20,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:01:20,483 INFO L471 AbstractCegarLoop]: Abstraction has 1799 states and 2933 transitions. [2024-10-24 03:01:20,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:01:20,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1799 states and 2933 transitions. [2024-10-24 03:01:20,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-24 03:01:20,484 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:01:20,484 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:01:20,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 03:01:20,485 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:01:20,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:01:20,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1492877758, now seen corresponding path program 1 times [2024-10-24 03:01:20,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:01:20,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84940405] [2024-10-24 03:01:20,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:01:20,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:01:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:20,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:01:20,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:20,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 03:01:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:20,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 03:01:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:20,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-24 03:01:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:20,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-24 03:01:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:20,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:01:20,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:01:20,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84940405] [2024-10-24 03:01:20,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84940405] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:01:20,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:01:20,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:01:20,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226593378] [2024-10-24 03:01:20,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:01:20,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:01:20,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:01:20,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:01:20,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:01:20,705 INFO L87 Difference]: Start difference. First operand 1799 states and 2933 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:01:22,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:01:22,342 INFO L93 Difference]: Finished difference Result 4322 states and 7165 transitions. [2024-10-24 03:01:22,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 03:01:22,342 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 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 172 [2024-10-24 03:01:22,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:01:22,350 INFO L225 Difference]: With dead ends: 4322 [2024-10-24 03:01:22,351 INFO L226 Difference]: Without dead ends: 2543 [2024-10-24 03:01:22,355 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-24 03:01:22,356 INFO L432 NwaCegarLoop]: 279 mSDtfsCounter, 1335 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 1829 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1356 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 1929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-24 03:01:22,356 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1356 Valid, 960 Invalid, 1929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1829 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-24 03:01:22,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2543 states. [2024-10-24 03:01:22,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2543 to 1799. [2024-10-24 03:01:22,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1799 states, 1647 states have (on average 1.629022465088039) internal successors, (2683), 1653 states have internal predecessors, (2683), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2024-10-24 03:01:22,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1799 states to 1799 states and 2928 transitions. [2024-10-24 03:01:22,454 INFO L78 Accepts]: Start accepts. Automaton has 1799 states and 2928 transitions. Word has length 172 [2024-10-24 03:01:22,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:01:22,454 INFO L471 AbstractCegarLoop]: Abstraction has 1799 states and 2928 transitions. [2024-10-24 03:01:22,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:01:22,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1799 states and 2928 transitions. [2024-10-24 03:01:22,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-24 03:01:22,456 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:01:22,456 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:01:22,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-24 03:01:22,456 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:01:22,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:01:22,457 INFO L85 PathProgramCache]: Analyzing trace with hash 404101700, now seen corresponding path program 1 times [2024-10-24 03:01:22,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:01:22,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567055237] [2024-10-24 03:01:22,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:01:22,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:01:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:22,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:01:22,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:22,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 03:01:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:22,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 03:01:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:22,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-24 03:01:22,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:22,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-24 03:01:22,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:22,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:01:22,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:01:22,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567055237] [2024-10-24 03:01:22,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567055237] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:01:22,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:01:22,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:01:22,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337523153] [2024-10-24 03:01:22,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:01:22,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:01:22,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:01:22,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:01:22,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:01:22,713 INFO L87 Difference]: Start difference. First operand 1799 states and 2928 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:01:26,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:01:26,069 INFO L93 Difference]: Finished difference Result 6200 states and 10240 transitions. [2024-10-24 03:01:26,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 03:01:26,071 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 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 172 [2024-10-24 03:01:26,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:01:26,087 INFO L225 Difference]: With dead ends: 6200 [2024-10-24 03:01:26,087 INFO L226 Difference]: Without dead ends: 4421 [2024-10-24 03:01:26,094 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 03:01:26,094 INFO L432 NwaCegarLoop]: 512 mSDtfsCounter, 1623 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 3933 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1643 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 4002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-24 03:01:26,095 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1643 Valid, 2230 Invalid, 4002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3933 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-24 03:01:26,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4421 states. [2024-10-24 03:01:26,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4421 to 3208. [2024-10-24 03:01:26,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3208 states, 2940 states have (on average 1.6238095238095238) internal successors, (4774), 2950 states have internal predecessors, (4774), 205 states have call successors, (205), 55 states have call predecessors, (205), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2024-10-24 03:01:26,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3208 states to 3208 states and 5217 transitions. [2024-10-24 03:01:26,303 INFO L78 Accepts]: Start accepts. Automaton has 3208 states and 5217 transitions. Word has length 172 [2024-10-24 03:01:26,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:01:26,304 INFO L471 AbstractCegarLoop]: Abstraction has 3208 states and 5217 transitions. [2024-10-24 03:01:26,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:01:26,304 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states and 5217 transitions. [2024-10-24 03:01:26,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-24 03:01:26,306 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:01:26,306 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:01:26,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-24 03:01:26,306 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:01:26,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:01:26,306 INFO L85 PathProgramCache]: Analyzing trace with hash 742389250, now seen corresponding path program 1 times [2024-10-24 03:01:26,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:01:26,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175565699] [2024-10-24 03:01:26,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:01:26,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:01:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:26,364 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:01:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:26,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 03:01:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:26,476 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 03:01:26,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:26,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-24 03:01:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:26,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-24 03:01:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:26,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:01:26,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:01:26,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175565699] [2024-10-24 03:01:26,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175565699] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:01:26,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:01:26,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:01:26,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217967672] [2024-10-24 03:01:26,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:01:26,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:01:26,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:01:26,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:01:26,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:01:26,497 INFO L87 Difference]: Start difference. First operand 3208 states and 5217 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:01:28,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:01:28,215 INFO L93 Difference]: Finished difference Result 7636 states and 12610 transitions. [2024-10-24 03:01:28,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 03:01:28,215 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 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 172 [2024-10-24 03:01:28,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:01:28,243 INFO L225 Difference]: With dead ends: 7636 [2024-10-24 03:01:28,243 INFO L226 Difference]: Without dead ends: 4448 [2024-10-24 03:01:28,249 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-24 03:01:28,254 INFO L432 NwaCegarLoop]: 279 mSDtfsCounter, 1334 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 1807 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1355 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 1907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-24 03:01:28,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1355 Valid, 960 Invalid, 1907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1807 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-24 03:01:28,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4448 states. [2024-10-24 03:01:28,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4448 to 3208. [2024-10-24 03:01:28,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3208 states, 2940 states have (on average 1.620748299319728) internal successors, (4765), 2950 states have internal predecessors, (4765), 205 states have call successors, (205), 55 states have call predecessors, (205), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2024-10-24 03:01:28,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3208 states to 3208 states and 5208 transitions. [2024-10-24 03:01:28,473 INFO L78 Accepts]: Start accepts. Automaton has 3208 states and 5208 transitions. Word has length 172 [2024-10-24 03:01:28,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:01:28,473 INFO L471 AbstractCegarLoop]: Abstraction has 3208 states and 5208 transitions. [2024-10-24 03:01:28,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:01:28,473 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states and 5208 transitions. [2024-10-24 03:01:28,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-24 03:01:28,475 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:01:28,475 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:01:28,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-24 03:01:28,476 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:01:28,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:01:28,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1168943748, now seen corresponding path program 1 times [2024-10-24 03:01:28,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:01:28,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836637574] [2024-10-24 03:01:28,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:01:28,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:01:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:28,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:01:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:28,606 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 03:01:28,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:28,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 03:01:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:28,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-24 03:01:28,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:28,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-24 03:01:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:28,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:01:28,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:01:28,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836637574] [2024-10-24 03:01:28,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836637574] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:01:28,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:01:28,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:01:28,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479134917] [2024-10-24 03:01:28,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:01:28,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:01:28,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:01:28,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:01:28,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:01:28,677 INFO L87 Difference]: Start difference. First operand 3208 states and 5208 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:01:32,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:01:32,507 INFO L93 Difference]: Finished difference Result 11331 states and 18641 transitions. [2024-10-24 03:01:32,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 03:01:32,507 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 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 172 [2024-10-24 03:01:32,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:01:32,533 INFO L225 Difference]: With dead ends: 11331 [2024-10-24 03:01:32,533 INFO L226 Difference]: Without dead ends: 8143 [2024-10-24 03:01:32,541 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 03:01:32,542 INFO L432 NwaCegarLoop]: 512 mSDtfsCounter, 1615 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 3895 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1635 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 3964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-10-24 03:01:32,542 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1635 Valid, 2230 Invalid, 3964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3895 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-24 03:01:32,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8143 states. [2024-10-24 03:01:33,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8143 to 6036. [2024-10-24 03:01:33,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6036 states, 5536 states have (on average 1.6161488439306357) internal successors, (8947), 5554 states have internal predecessors, (8947), 381 states have call successors, (381), 103 states have call predecessors, (381), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2024-10-24 03:01:33,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6036 states to 6036 states and 9804 transitions. [2024-10-24 03:01:33,030 INFO L78 Accepts]: Start accepts. Automaton has 6036 states and 9804 transitions. Word has length 172 [2024-10-24 03:01:33,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:01:33,030 INFO L471 AbstractCegarLoop]: Abstraction has 6036 states and 9804 transitions. [2024-10-24 03:01:33,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:01:33,031 INFO L276 IsEmpty]: Start isEmpty. Operand 6036 states and 9804 transitions. [2024-10-24 03:01:33,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-24 03:01:33,035 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:01:33,035 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:01:33,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-24 03:01:33,035 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:01:33,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:01:33,036 INFO L85 PathProgramCache]: Analyzing trace with hash 628514242, now seen corresponding path program 1 times [2024-10-24 03:01:33,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:01:33,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502872613] [2024-10-24 03:01:33,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:01:33,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:01:33,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:33,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:01:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:33,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 03:01:33,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:33,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 03:01:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:33,320 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-24 03:01:33,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:33,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-24 03:01:33,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:33,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:01:33,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:01:33,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502872613] [2024-10-24 03:01:33,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502872613] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:01:33,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:01:33,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:01:33,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282483196] [2024-10-24 03:01:33,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:01:33,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:01:33,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:01:33,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:01:33,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:01:33,336 INFO L87 Difference]: Start difference. First operand 6036 states and 9804 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:01:37,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:01:37,357 INFO L93 Difference]: Finished difference Result 21609 states and 35575 transitions. [2024-10-24 03:01:37,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 03:01:37,357 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 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 172 [2024-10-24 03:01:37,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:01:37,395 INFO L225 Difference]: With dead ends: 21609 [2024-10-24 03:01:37,396 INFO L226 Difference]: Without dead ends: 15593 [2024-10-24 03:01:37,410 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 03:01:37,410 INFO L432 NwaCegarLoop]: 512 mSDtfsCounter, 1614 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 3882 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1634 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 3951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-24 03:01:37,411 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1634 Valid, 2230 Invalid, 3951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3882 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-24 03:01:37,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15593 states. [2024-10-24 03:01:38,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15593 to 11705. [2024-10-24 03:01:38,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11705 states, 10741 states have (on average 1.6133507122241877) internal successors, (17329), 10775 states have internal predecessors, (17329), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2024-10-24 03:01:38,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11705 states to 11705 states and 19068 transitions. [2024-10-24 03:01:38,251 INFO L78 Accepts]: Start accepts. Automaton has 11705 states and 19068 transitions. Word has length 172 [2024-10-24 03:01:38,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:01:38,251 INFO L471 AbstractCegarLoop]: Abstraction has 11705 states and 19068 transitions. [2024-10-24 03:01:38,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:01:38,252 INFO L276 IsEmpty]: Start isEmpty. Operand 11705 states and 19068 transitions. [2024-10-24 03:01:38,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-24 03:01:38,257 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:01:38,257 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:01:38,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-24 03:01:38,258 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:01:38,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:01:38,258 INFO L85 PathProgramCache]: Analyzing trace with hash 472533700, now seen corresponding path program 1 times [2024-10-24 03:01:38,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:01:38,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190592828] [2024-10-24 03:01:38,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:01:38,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:01:38,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:38,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:01:38,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:38,391 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 03:01:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:38,444 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 03:01:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:38,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-24 03:01:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:38,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-24 03:01:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:38,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:01:38,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:01:38,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190592828] [2024-10-24 03:01:38,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190592828] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:01:38,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:01:38,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:01:38,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681647535] [2024-10-24 03:01:38,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:01:38,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:01:38,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:01:38,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:01:38,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:01:38,464 INFO L87 Difference]: Start difference. First operand 11705 states and 19068 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:01:43,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:01:43,499 INFO L93 Difference]: Finished difference Result 42164 states and 69633 transitions. [2024-10-24 03:01:43,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 03:01:43,500 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 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 172 [2024-10-24 03:01:43,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:01:43,575 INFO L225 Difference]: With dead ends: 42164 [2024-10-24 03:01:43,576 INFO L226 Difference]: Without dead ends: 30479 [2024-10-24 03:01:43,606 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 03:01:43,607 INFO L432 NwaCegarLoop]: 512 mSDtfsCounter, 1613 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 3869 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1633 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 3938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-10-24 03:01:43,607 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1633 Valid, 2230 Invalid, 3938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3869 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-24 03:01:43,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30479 states. [2024-10-24 03:01:45,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30479 to 23074. [2024-10-24 03:01:45,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23074 states, 21182 states have (on average 1.6116986120290813) internal successors, (34139), 21248 states have internal predecessors, (34139), 1437 states have call successors, (1437), 391 states have call predecessors, (1437), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2024-10-24 03:01:45,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23074 states to 23074 states and 37804 transitions. [2024-10-24 03:01:45,188 INFO L78 Accepts]: Start accepts. Automaton has 23074 states and 37804 transitions. Word has length 172 [2024-10-24 03:01:45,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:01:45,189 INFO L471 AbstractCegarLoop]: Abstraction has 23074 states and 37804 transitions. [2024-10-24 03:01:45,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:01:45,189 INFO L276 IsEmpty]: Start isEmpty. Operand 23074 states and 37804 transitions. [2024-10-24 03:01:45,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-24 03:01:45,200 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:01:45,200 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:01:45,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-24 03:01:45,200 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:01:45,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:01:45,200 INFO L85 PathProgramCache]: Analyzing trace with hash 883144066, now seen corresponding path program 1 times [2024-10-24 03:01:45,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:01:45,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329640438] [2024-10-24 03:01:45,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:01:45,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:01:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:45,298 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:01:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:45,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 03:01:45,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:45,468 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 03:01:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:45,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-24 03:01:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:45,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-24 03:01:45,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:45,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:01:45,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:01:45,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329640438] [2024-10-24 03:01:45,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329640438] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:01:45,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:01:45,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:01:45,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478150611] [2024-10-24 03:01:45,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:01:45,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:01:45,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:01:45,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:01:45,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:01:45,491 INFO L87 Difference]: Start difference. First operand 23074 states and 37804 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:01:49,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:01:49,203 INFO L93 Difference]: Finished difference Result 54024 states and 89997 transitions. [2024-10-24 03:01:49,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 03:01:49,204 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 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 172 [2024-10-24 03:01:49,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:01:49,298 INFO L225 Difference]: With dead ends: 54024 [2024-10-24 03:01:49,298 INFO L226 Difference]: Without dead ends: 30970 [2024-10-24 03:01:49,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-24 03:01:49,347 INFO L432 NwaCegarLoop]: 278 mSDtfsCounter, 1407 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 1695 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 1796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-24 03:01:49,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 959 Invalid, 1796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1695 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-24 03:01:49,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30970 states. [2024-10-24 03:01:50,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30970 to 23074. [2024-10-24 03:01:50,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23074 states, 21182 states have (on average 1.6086299688414691) internal successors, (34074), 21248 states have internal predecessors, (34074), 1437 states have call successors, (1437), 391 states have call predecessors, (1437), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2024-10-24 03:01:50,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23074 states to 23074 states and 37739 transitions. [2024-10-24 03:01:50,954 INFO L78 Accepts]: Start accepts. Automaton has 23074 states and 37739 transitions. Word has length 172 [2024-10-24 03:01:50,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:01:50,955 INFO L471 AbstractCegarLoop]: Abstraction has 23074 states and 37739 transitions. [2024-10-24 03:01:50,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:01:50,955 INFO L276 IsEmpty]: Start isEmpty. Operand 23074 states and 37739 transitions. [2024-10-24 03:01:50,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-24 03:01:50,966 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:01:50,967 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:01:50,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-24 03:01:50,967 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:01:50,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:01:50,967 INFO L85 PathProgramCache]: Analyzing trace with hash -904725756, now seen corresponding path program 1 times [2024-10-24 03:01:50,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:01:50,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261560681] [2024-10-24 03:01:50,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:01:50,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:01:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:51,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:01:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:51,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 03:01:51,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:51,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 03:01:51,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:51,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-24 03:01:51,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:51,166 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-24 03:01:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:51,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:01:51,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:01:51,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261560681] [2024-10-24 03:01:51,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261560681] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:01:51,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:01:51,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:01:51,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597751905] [2024-10-24 03:01:51,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:01:51,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:01:51,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:01:51,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:01:51,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:01:51,171 INFO L87 Difference]: Start difference. First operand 23074 states and 37739 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:01:58,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:01:58,671 INFO L93 Difference]: Finished difference Result 83143 states and 137763 transitions. [2024-10-24 03:01:58,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 03:01:58,672 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 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 172 [2024-10-24 03:01:58,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:01:58,843 INFO L225 Difference]: With dead ends: 83143 [2024-10-24 03:01:58,843 INFO L226 Difference]: Without dead ends: 60089 [2024-10-24 03:01:58,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 03:01:58,898 INFO L432 NwaCegarLoop]: 512 mSDtfsCounter, 1607 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 3812 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1627 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 3881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-10-24 03:01:58,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1627 Valid, 2230 Invalid, 3881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3812 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-24 03:01:58,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60089 states. [2024-10-24 03:02:02,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60089 to 46005. [2024-10-24 03:02:02,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46005 states, 42257 states have (on average 1.6073076650022482) internal successors, (67920), 42387 states have internal predecessors, (67920), 2845 states have call successors, (2845), 775 states have call predecessors, (2845), 902 states have return successors, (5158), 2970 states have call predecessors, (5158), 2843 states have call successors, (5158) [2024-10-24 03:02:02,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46005 states to 46005 states and 75923 transitions. [2024-10-24 03:02:02,940 INFO L78 Accepts]: Start accepts. Automaton has 46005 states and 75923 transitions. Word has length 172 [2024-10-24 03:02:02,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:02:02,941 INFO L471 AbstractCegarLoop]: Abstraction has 46005 states and 75923 transitions. [2024-10-24 03:02:02,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:02:02,941 INFO L276 IsEmpty]: Start isEmpty. Operand 46005 states and 75923 transitions. [2024-10-24 03:02:02,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-24 03:02:02,961 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:02:02,962 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:02:02,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-24 03:02:02,962 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:02:02,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:02:02,962 INFO L85 PathProgramCache]: Analyzing trace with hash -835077882, now seen corresponding path program 1 times [2024-10-24 03:02:02,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:02:02,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651060676] [2024-10-24 03:02:02,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:02:02,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:02:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:03,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:02:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:03,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 03:02:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:03,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 03:02:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:03,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-24 03:02:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:03,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-24 03:02:03,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:03,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:02:03,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:02:03,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651060676] [2024-10-24 03:02:03,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651060676] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:02:03,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:02:03,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:02:03,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417181997] [2024-10-24 03:02:03,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:02:03,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:02:03,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:02:03,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:02:03,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:02:03,157 INFO L87 Difference]: Start difference. First operand 46005 states and 75923 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:02:15,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:02:15,795 INFO L93 Difference]: Finished difference Result 186360 states and 310847 transitions. [2024-10-24 03:02:15,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 03:02:15,796 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 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 172 [2024-10-24 03:02:15,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:02:16,257 INFO L225 Difference]: With dead ends: 186360 [2024-10-24 03:02:16,258 INFO L226 Difference]: Without dead ends: 140375 [2024-10-24 03:02:16,647 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-24 03:02:16,648 INFO L432 NwaCegarLoop]: 510 mSDtfsCounter, 2075 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 3789 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2109 SdHoareTripleChecker+Valid, 2223 SdHoareTripleChecker+Invalid, 3861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 3789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-24 03:02:16,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2109 Valid, 2223 Invalid, 3861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 3789 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-24 03:02:16,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140375 states.