./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_2.cil-1+token_ring.02.cil-2.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_2.cil-1+token_ring.02.cil-2.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 4ea93d7c6d06d46004840cc5fcb436c7c307334e6ee754b8ee507b78f644445d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 03:01:42,361 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 03:01:42,435 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 03:01:42,451 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 03:01:42,452 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 03:01:42,484 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 03:01:42,485 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 03:01:42,486 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 03:01:42,486 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 03:01:42,487 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 03:01:42,489 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 03:01:42,489 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 03:01:42,490 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 03:01:42,490 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 03:01:42,492 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 03:01:42,492 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 03:01:42,493 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 03:01:42,493 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 03:01:42,493 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 03:01:42,494 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 03:01:42,494 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 03:01:42,498 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 03:01:42,498 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 03:01:42,499 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 03:01:42,499 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 03:01:42,499 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 03:01:42,500 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 03:01:42,500 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 03:01:42,500 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 03:01:42,500 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 03:01:42,501 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 03:01:42,501 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 03:01:42,501 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 03:01:42,501 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 03:01:42,502 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 03:01:42,502 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 03:01:42,502 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 03:01:42,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 03:01:42,504 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 03:01:42,504 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 03:01:42,504 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 03:01:42,505 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 03:01:42,506 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ea93d7c6d06d46004840cc5fcb436c7c307334e6ee754b8ee507b78f644445d [2024-10-24 03:01:42,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 03:01:42,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 03:01:42,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 03:01:42,784 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 03:01:42,785 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 03:01:42,786 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.02.cil-2.c [2024-10-24 03:01:44,302 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 03:01:44,337 ERROR L? ?]: Error during toolchain job processing: java.lang.NullPointerException at org.eclipse.cdt.internal.core.model.PathEntry.kindFromString(PathEntry.java:80) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.decodePathEntry(DefaultPathEntryStore.java:127) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.getRawPathEntries(DefaultPathEntryStore.java:97) at org.eclipse.cdt.internal.core.model.PathEntryStoreProxy.getRawPathEntries(PathEntryStoreProxy.java:102) at org.eclipse.cdt.internal.core.model.PathEntryManager.getRawPathEntries(PathEntryManager.java:666) at org.eclipse.cdt.core.model.CoreModel.getRawPathEntries(CoreModel.java:937) at org.eclipse.cdt.core.model.CoreModel.oldIsScannerInformationEmpty(CoreModel.java:1307) at org.eclipse.cdt.core.model.CoreModel.isScannerInformationEmpty(CoreModel.java:1252) at org.eclipse.cdt.internal.core.pdom.indexer.ProjectIndexerInputAdapter.isFileBuildConfigured(ProjectIndexerInputAdapter.java:267) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.isRequiredInIndex(AbstractIndexerTask.java:748) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.extractFiles(AbstractIndexerTask.java:667) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.runTask(AbstractIndexerTask.java:558) at org.eclipse.cdt.internal.core.pdom.indexer.PDOMIndexerTask.run(PDOMIndexerTask.java:164) at org.eclipse.cdt.internal.core.pdom.PDOMIndexerJob.run(PDOMIndexerJob.java:160) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-10-24 03:01:44,547 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 03:01:44,549 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.02.cil-2.c [2024-10-24 03:01:44,563 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eec2f57a2/73bd4c858e3b4357a64a8c05eded6c64/FLAGd1134093b [2024-10-24 03:01:44,899 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eec2f57a2/73bd4c858e3b4357a64a8c05eded6c64 [2024-10-24 03:01:44,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 03:01:44,902 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 03:01:44,903 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 03:01:44,904 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 03:01:44,908 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 03:01:44,908 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:01:44" (1/1) ... [2024-10-24 03:01:44,909 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22adfefc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:01:44, skipping insertion in model container [2024-10-24 03:01:44,909 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:01:44" (1/1) ... [2024-10-24 03:01:44,949 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 03:01:45,108 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_2.cil-1+token_ring.02.cil-2.c[914,927] [2024-10-24 03:01:45,155 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_2.cil-1+token_ring.02.cil-2.c[7115,7128] [2024-10-24 03:01:45,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 03:01:45,196 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 03:01:45,208 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_2.cil-1+token_ring.02.cil-2.c[914,927] [2024-10-24 03:01:45,226 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_2.cil-1+token_ring.02.cil-2.c[7115,7128] [2024-10-24 03:01:45,249 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 03:01:45,269 INFO L204 MainTranslator]: Completed translation [2024-10-24 03:01:45,269 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:01:45 WrapperNode [2024-10-24 03:01:45,270 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 03:01:45,271 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 03:01:45,271 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 03:01:45,271 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 03:01:45,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:01:45" (1/1) ... [2024-10-24 03:01:45,288 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:01:45" (1/1) ... [2024-10-24 03:01:45,324 INFO L138 Inliner]: procedures = 57, calls = 64, calls flagged for inlining = 25, calls inlined = 25, statements flattened = 474 [2024-10-24 03:01:45,325 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 03:01:45,325 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 03:01:45,325 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 03:01:45,326 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 03:01:45,336 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:01:45" (1/1) ... [2024-10-24 03:01:45,337 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:01:45" (1/1) ... [2024-10-24 03:01:45,340 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:01:45" (1/1) ... [2024-10-24 03:01:45,354 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 03:01:45,354 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:01:45" (1/1) ... [2024-10-24 03:01:45,354 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:01:45" (1/1) ... [2024-10-24 03:01:45,362 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:01:45" (1/1) ... [2024-10-24 03:01:45,369 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:01:45" (1/1) ... [2024-10-24 03:01:45,372 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:01:45" (1/1) ... [2024-10-24 03:01:45,373 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:01:45" (1/1) ... [2024-10-24 03:01:45,377 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 03:01:45,381 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 03:01:45,381 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 03:01:45,381 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 03:01:45,382 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:01:45" (1/1) ... [2024-10-24 03:01:45,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 03:01:45,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:01:45,418 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 03:01:45,419 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 03:01:45,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 03:01:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-24 03:01:45,457 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-24 03:01:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-10-24 03:01:45,457 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-10-24 03:01:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-10-24 03:01:45,457 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-10-24 03:01:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-10-24 03:01:45,458 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-10-24 03:01:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-10-24 03:01:45,458 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-10-24 03:01:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-10-24 03:01:45,458 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-10-24 03:01:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-10-24 03:01:45,459 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-10-24 03:01:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-10-24 03:01:45,459 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-10-24 03:01:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-10-24 03:01:45,459 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-10-24 03:01:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-10-24 03:01:45,460 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-10-24 03:01:45,460 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-10-24 03:01:45,460 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-10-24 03:01:45,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 03:01:45,460 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-10-24 03:01:45,460 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-10-24 03:01:45,461 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-10-24 03:01:45,461 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-10-24 03:01:45,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 03:01:45,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 03:01:45,461 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-10-24 03:01:45,461 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-10-24 03:01:45,461 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-10-24 03:01:45,461 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-10-24 03:01:45,549 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 03:01:45,551 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 03:01:46,070 INFO L? ?]: Removed 71 outVars from TransFormulas that were not future-live. [2024-10-24 03:01:46,071 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 03:01:46,123 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 03:01:46,124 INFO L314 CfgBuilder]: Removed 9 assume(true) statements. [2024-10-24 03:01:46,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:01:46 BoogieIcfgContainer [2024-10-24 03:01:46,124 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 03:01:46,131 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 03:01:46,131 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 03:01:46,136 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 03:01:46,136 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:01:44" (1/3) ... [2024-10-24 03:01:46,137 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a9439f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:01:46, skipping insertion in model container [2024-10-24 03:01:46,137 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:01:45" (2/3) ... [2024-10-24 03:01:46,138 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a9439f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:01:46, skipping insertion in model container [2024-10-24 03:01:46,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:01:46" (3/3) ... [2024-10-24 03:01:46,140 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.02.cil-2.c [2024-10-24 03:01:46,160 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 03:01:46,160 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-24 03:01:46,285 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 03:01:46,292 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;@73596455, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 03:01:46,293 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-24 03:01:46,300 INFO L276 IsEmpty]: Start isEmpty. Operand has 217 states, 167 states have (on average 1.6467065868263473) internal successors, (275), 175 states have internal predecessors, (275), 32 states have call successors, (32), 15 states have call predecessors, (32), 15 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) [2024-10-24 03:01:46,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-24 03:01:46,313 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:01:46,313 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] [2024-10-24 03:01:46,314 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:01:46,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:01:46,320 INFO L85 PathProgramCache]: Analyzing trace with hash 2083918704, now seen corresponding path program 1 times [2024-10-24 03:01:46,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:01:46,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622127564] [2024-10-24 03:01:46,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:01:46,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:01:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:46,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:01:46,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:46,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:01:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:46,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:01:46,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:46,718 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:01:46,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:46,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:01:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:46,731 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:01:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:46,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:01:46,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:46,743 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 03:01:46,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:01:46,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622127564] [2024-10-24 03:01:46,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622127564] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:01:46,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:01:46,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 03:01:46,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907253483] [2024-10-24 03:01:46,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:01:46,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 03:01:46,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:01:46,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 03:01:46,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 03:01:46,787 INFO L87 Difference]: Start difference. First operand has 217 states, 167 states have (on average 1.6467065868263473) internal successors, (275), 175 states have internal predecessors, (275), 32 states have call successors, (32), 15 states have call predecessors, (32), 15 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-24 03:01:47,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:01:47,495 INFO L93 Difference]: Finished difference Result 437 states and 682 transitions. [2024-10-24 03:01:47,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 03:01:47,498 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2024-10-24 03:01:47,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:01:47,509 INFO L225 Difference]: With dead ends: 437 [2024-10-24 03:01:47,509 INFO L226 Difference]: Without dead ends: 228 [2024-10-24 03:01:47,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-24 03:01:47,517 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 433 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 03:01:47,518 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 518 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 03:01:47,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-10-24 03:01:47,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 211. [2024-10-24 03:01:47,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 164 states have (on average 1.5182926829268293) internal successors, (249), 169 states have internal predecessors, (249), 32 states have call successors, (32), 15 states have call predecessors, (32), 13 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-10-24 03:01:47,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 309 transitions. [2024-10-24 03:01:47,591 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 309 transitions. Word has length 58 [2024-10-24 03:01:47,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:01:47,592 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 309 transitions. [2024-10-24 03:01:47,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-24 03:01:47,593 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 309 transitions. [2024-10-24 03:01:47,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-24 03:01:47,598 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:01:47,598 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] [2024-10-24 03:01:47,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 03:01:47,598 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:01:47,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:01:47,599 INFO L85 PathProgramCache]: Analyzing trace with hash -182462482, now seen corresponding path program 1 times [2024-10-24 03:01:47,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:01:47,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927958468] [2024-10-24 03:01:47,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:01:47,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:01:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:47,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:01:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:47,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:01:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:47,871 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:01:47,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:47,883 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:01:47,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:47,889 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:01:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:47,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:01:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:47,898 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:01:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:47,905 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 03:01:47,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:01:47,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927958468] [2024-10-24 03:01:47,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927958468] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:01:47,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:01:47,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 03:01:47,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573689028] [2024-10-24 03:01:47,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:01:47,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 03:01:47,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:01:47,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 03:01:47,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-24 03:01:47,913 INFO L87 Difference]: Start difference. First operand 211 states and 309 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-24 03:01:48,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:01:48,766 INFO L93 Difference]: Finished difference Result 417 states and 606 transitions. [2024-10-24 03:01:48,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 03:01:48,766 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2024-10-24 03:01:48,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:01:48,770 INFO L225 Difference]: With dead ends: 417 [2024-10-24 03:01:48,770 INFO L226 Difference]: Without dead ends: 336 [2024-10-24 03:01:48,771 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2024-10-24 03:01:48,773 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 433 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 03:01:48,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 814 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 03:01:48,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-10-24 03:01:48,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 299. [2024-10-24 03:01:48,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 232 states have (on average 1.4870689655172413) internal successors, (345), 239 states have internal predecessors, (345), 43 states have call successors, (43), 22 states have call predecessors, (43), 22 states have return successors, (44), 40 states have call predecessors, (44), 39 states have call successors, (44) [2024-10-24 03:01:48,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 432 transitions. [2024-10-24 03:01:48,817 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 432 transitions. Word has length 58 [2024-10-24 03:01:48,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:01:48,817 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 432 transitions. [2024-10-24 03:01:48,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-24 03:01:48,818 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 432 transitions. [2024-10-24 03:01:48,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-24 03:01:48,823 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:01:48,823 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:01:48,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 03:01:48,823 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:01:48,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:01:48,824 INFO L85 PathProgramCache]: Analyzing trace with hash -316696146, now seen corresponding path program 1 times [2024-10-24 03:01:48,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:01:48,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840877845] [2024-10-24 03:01:48,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:01:48,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:01:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:48,908 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:01:48,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:48,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:01:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:48,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:01:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:48,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:01:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:48,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:01:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:48,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:01:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:49,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:01:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:49,006 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 03:01:49,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:01:49,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840877845] [2024-10-24 03:01:49,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840877845] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:01:49,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:01:49,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-24 03:01:49,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314955979] [2024-10-24 03:01:49,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:01:49,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 03:01:49,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:01:49,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 03:01:49,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-24 03:01:49,009 INFO L87 Difference]: Start difference. First operand 299 states and 432 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-24 03:01:49,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:01:49,766 INFO L93 Difference]: Finished difference Result 493 states and 705 transitions. [2024-10-24 03:01:49,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 03:01:49,766 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2024-10-24 03:01:49,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:01:49,769 INFO L225 Difference]: With dead ends: 493 [2024-10-24 03:01:49,769 INFO L226 Difference]: Without dead ends: 331 [2024-10-24 03:01:49,773 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-10-24 03:01:49,775 INFO L432 NwaCegarLoop]: 182 mSDtfsCounter, 344 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 03:01:49,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 1025 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 03:01:49,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-10-24 03:01:49,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 303. [2024-10-24 03:01:49,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 235 states have (on average 1.476595744680851) internal successors, (347), 242 states have internal predecessors, (347), 43 states have call successors, (43), 22 states have call predecessors, (43), 23 states have return successors, (45), 41 states have call predecessors, (45), 39 states have call successors, (45) [2024-10-24 03:01:49,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 435 transitions. [2024-10-24 03:01:49,819 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 435 transitions. Word has length 58 [2024-10-24 03:01:49,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:01:49,820 INFO L471 AbstractCegarLoop]: Abstraction has 303 states and 435 transitions. [2024-10-24 03:01:49,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-24 03:01:49,820 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 435 transitions. [2024-10-24 03:01:49,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-24 03:01:49,821 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:01:49,821 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] [2024-10-24 03:01:49,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 03:01:49,822 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:01:49,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:01:49,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1734287852, now seen corresponding path program 1 times [2024-10-24 03:01:49,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:01:49,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376110044] [2024-10-24 03:01:49,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:01:49,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:01:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:49,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:01:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:49,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:01:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:49,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:01:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:49,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:01:49,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:49,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:01:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:49,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:01:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:49,961 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:01:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:49,965 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 03:01:49,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:01:49,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376110044] [2024-10-24 03:01:49,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376110044] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:01:49,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:01:49,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-24 03:01:49,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199928402] [2024-10-24 03:01:49,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:01:49,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 03:01:49,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:01:49,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 03:01:49,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-24 03:01:49,968 INFO L87 Difference]: Start difference. First operand 303 states and 435 transitions. Second operand has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-10-24 03:01:51,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:01:51,671 INFO L93 Difference]: Finished difference Result 1136 states and 1586 transitions. [2024-10-24 03:01:51,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-24 03:01:51,672 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 58 [2024-10-24 03:01:51,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:01:51,678 INFO L225 Difference]: With dead ends: 1136 [2024-10-24 03:01:51,678 INFO L226 Difference]: Without dead ends: 958 [2024-10-24 03:01:51,682 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2024-10-24 03:01:51,683 INFO L432 NwaCegarLoop]: 243 mSDtfsCounter, 1791 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 1479 mSolverCounterSat, 452 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1807 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 1931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 452 IncrementalHoareTripleChecker+Valid, 1479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-24 03:01:51,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1807 Valid, 1336 Invalid, 1931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [452 Valid, 1479 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-24 03:01:51,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2024-10-24 03:01:51,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 841. [2024-10-24 03:01:51,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 654 states have (on average 1.4051987767584098) internal successors, (919), 669 states have internal predecessors, (919), 100 states have call successors, (100), 75 states have call predecessors, (100), 85 states have return successors, (114), 98 states have call predecessors, (114), 96 states have call successors, (114) [2024-10-24 03:01:51,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1133 transitions. [2024-10-24 03:01:51,762 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1133 transitions. Word has length 58 [2024-10-24 03:01:51,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:01:51,763 INFO L471 AbstractCegarLoop]: Abstraction has 841 states and 1133 transitions. [2024-10-24 03:01:51,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-10-24 03:01:51,763 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1133 transitions. [2024-10-24 03:01:51,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-24 03:01:51,764 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:01:51,765 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] [2024-10-24 03:01:51,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 03:01:51,765 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:01:51,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:01:51,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1696915276, now seen corresponding path program 1 times [2024-10-24 03:01:51,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:01:51,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708703273] [2024-10-24 03:01:51,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:01:51,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:01:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:51,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:01:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:51,850 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:01:51,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:51,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:01:51,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:51,906 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:01:51,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:51,909 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:01:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:51,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:01:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:51,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:01:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:51,953 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 03:01:51,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:01:51,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708703273] [2024-10-24 03:01:51,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708703273] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:01:51,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:01:51,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-24 03:01:51,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819552706] [2024-10-24 03:01:51,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:01:51,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 03:01:51,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:01:51,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 03:01:51,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-24 03:01:51,956 INFO L87 Difference]: Start difference. First operand 841 states and 1133 transitions. Second operand has 9 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-24 03:01:52,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:01:52,741 INFO L93 Difference]: Finished difference Result 1651 states and 2205 transitions. [2024-10-24 03:01:52,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 03:01:52,742 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 59 [2024-10-24 03:01:52,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:01:52,749 INFO L225 Difference]: With dead ends: 1651 [2024-10-24 03:01:52,749 INFO L226 Difference]: Without dead ends: 941 [2024-10-24 03:01:52,751 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-10-24 03:01:52,752 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 236 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 03:01:52,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 1144 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 966 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 03:01:52,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2024-10-24 03:01:52,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 857. [2024-10-24 03:01:52,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 666 states have (on average 1.3903903903903905) internal successors, (926), 681 states have internal predecessors, (926), 100 states have call successors, (100), 75 states have call predecessors, (100), 89 states have return successors, (118), 102 states have call predecessors, (118), 96 states have call successors, (118) [2024-10-24 03:01:52,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1144 transitions. [2024-10-24 03:01:52,843 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1144 transitions. Word has length 59 [2024-10-24 03:01:52,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:01:52,844 INFO L471 AbstractCegarLoop]: Abstraction has 857 states and 1144 transitions. [2024-10-24 03:01:52,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-24 03:01:52,844 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1144 transitions. [2024-10-24 03:01:52,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-24 03:01:52,845 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:01:52,845 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] [2024-10-24 03:01:52,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 03:01:52,845 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:01:52,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:01:52,845 INFO L85 PathProgramCache]: Analyzing trace with hash 226312758, now seen corresponding path program 1 times [2024-10-24 03:01:52,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:01:52,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916522943] [2024-10-24 03:01:52,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:01:52,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:01:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:52,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:01:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:52,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:01:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:52,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:01:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:52,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:01:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:52,972 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:01:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:52,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:01:52,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:53,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:01:53,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:53,002 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 03:01:53,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:01:53,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916522943] [2024-10-24 03:01:53,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916522943] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:01:53,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:01:53,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 03:01:53,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801188784] [2024-10-24 03:01:53,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:01:53,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 03:01:53,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:01:53,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 03:01:53,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 03:01:53,006 INFO L87 Difference]: Start difference. First operand 857 states and 1144 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-24 03:01:53,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:01:53,941 INFO L93 Difference]: Finished difference Result 2297 states and 2963 transitions. [2024-10-24 03:01:53,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-24 03:01:53,941 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 59 [2024-10-24 03:01:53,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:01:53,949 INFO L225 Difference]: With dead ends: 2297 [2024-10-24 03:01:53,949 INFO L226 Difference]: Without dead ends: 1572 [2024-10-24 03:01:53,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2024-10-24 03:01:53,955 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 749 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 03:01:53,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 718 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 03:01:53,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2024-10-24 03:01:54,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1270. [2024-10-24 03:01:54,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 984 states have (on average 1.3617886178861789) internal successors, (1340), 1008 states have internal predecessors, (1340), 146 states have call successors, (146), 114 states have call predecessors, (146), 138 states have return successors, (190), 150 states have call predecessors, (190), 142 states have call successors, (190) [2024-10-24 03:01:54,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 1676 transitions. [2024-10-24 03:01:54,100 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 1676 transitions. Word has length 59 [2024-10-24 03:01:54,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:01:54,101 INFO L471 AbstractCegarLoop]: Abstraction has 1270 states and 1676 transitions. [2024-10-24 03:01:54,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-24 03:01:54,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 1676 transitions. [2024-10-24 03:01:54,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-24 03:01:54,102 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:01:54,103 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] [2024-10-24 03:01:54,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 03:01:54,103 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:01:54,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:01:54,104 INFO L85 PathProgramCache]: Analyzing trace with hash 445167476, now seen corresponding path program 1 times [2024-10-24 03:01:54,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:01:54,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498213122] [2024-10-24 03:01:54,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:01:54,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:01:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:54,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:01:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:54,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:01:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:54,191 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:01:54,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:54,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:01:54,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:54,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:01:54,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:54,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:01:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:54,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:01:54,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:54,228 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 03:01:54,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:01:54,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498213122] [2024-10-24 03:01:54,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498213122] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:01:54,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:01:54,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:01:54,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662524227] [2024-10-24 03:01:54,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:01:54,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:01:54,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:01:54,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:01:54,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:01:54,231 INFO L87 Difference]: Start difference. First operand 1270 states and 1676 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-24 03:01:55,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:01:55,001 INFO L93 Difference]: Finished difference Result 3541 states and 4615 transitions. [2024-10-24 03:01:55,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 03:01:55,001 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 59 [2024-10-24 03:01:55,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:01:55,014 INFO L225 Difference]: With dead ends: 3541 [2024-10-24 03:01:55,014 INFO L226 Difference]: Without dead ends: 2405 [2024-10-24 03:01:55,018 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2024-10-24 03:01:55,018 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 585 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 03:01:55,019 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 685 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 03:01:55,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2405 states. [2024-10-24 03:01:55,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2405 to 2301. [2024-10-24 03:01:55,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2301 states, 1755 states have (on average 1.3071225071225072) internal successors, (2294), 1800 states have internal predecessors, (2294), 270 states have call successors, (270), 220 states have call predecessors, (270), 274 states have return successors, (398), 283 states have call predecessors, (398), 266 states have call successors, (398) [2024-10-24 03:01:55,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2301 states to 2301 states and 2962 transitions. [2024-10-24 03:01:55,244 INFO L78 Accepts]: Start accepts. Automaton has 2301 states and 2962 transitions. Word has length 59 [2024-10-24 03:01:55,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:01:55,244 INFO L471 AbstractCegarLoop]: Abstraction has 2301 states and 2962 transitions. [2024-10-24 03:01:55,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-24 03:01:55,244 INFO L276 IsEmpty]: Start isEmpty. Operand 2301 states and 2962 transitions. [2024-10-24 03:01:55,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-24 03:01:55,245 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:01:55,245 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] [2024-10-24 03:01:55,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 03:01:55,246 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:01:55,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:01:55,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1598525080, now seen corresponding path program 1 times [2024-10-24 03:01:55,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:01:55,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75557599] [2024-10-24 03:01:55,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:01:55,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:01:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:55,284 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:01:55,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:55,293 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:01:55,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:55,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:01:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:55,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:01:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:55,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:01:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:55,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:01:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:55,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:01:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:55,319 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 03:01:55,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:01:55,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75557599] [2024-10-24 03:01:55,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75557599] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:01:55,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:01:55,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 03:01:55,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130717708] [2024-10-24 03:01:55,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:01:55,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 03:01:55,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:01:55,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 03:01:55,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 03:01:55,321 INFO L87 Difference]: Start difference. First operand 2301 states and 2962 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-24 03:01:56,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:01:56,107 INFO L93 Difference]: Finished difference Result 5359 states and 6872 transitions. [2024-10-24 03:01:56,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 03:01:56,108 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2024-10-24 03:01:56,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:01:56,124 INFO L225 Difference]: With dead ends: 5359 [2024-10-24 03:01:56,125 INFO L226 Difference]: Without dead ends: 3192 [2024-10-24 03:01:56,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-10-24 03:01:56,132 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 551 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 03:01:56,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 549 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 03:01:56,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3192 states. [2024-10-24 03:01:56,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3192 to 2948. [2024-10-24 03:01:56,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2948 states, 2245 states have (on average 1.2966592427616928) internal successors, (2911), 2296 states have internal predecessors, (2911), 346 states have call successors, (346), 286 states have call predecessors, (346), 355 states have return successors, (494), 368 states have call predecessors, (494), 342 states have call successors, (494) [2024-10-24 03:01:56,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2948 states to 2948 states and 3751 transitions. [2024-10-24 03:01:56,475 INFO L78 Accepts]: Start accepts. Automaton has 2948 states and 3751 transitions. Word has length 60 [2024-10-24 03:01:56,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:01:56,475 INFO L471 AbstractCegarLoop]: Abstraction has 2948 states and 3751 transitions. [2024-10-24 03:01:56,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-24 03:01:56,475 INFO L276 IsEmpty]: Start isEmpty. Operand 2948 states and 3751 transitions. [2024-10-24 03:01:56,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-24 03:01:56,476 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:01:56,477 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] [2024-10-24 03:01:56,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 03:01:56,477 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:01:56,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:01:56,477 INFO L85 PathProgramCache]: Analyzing trace with hash -713989047, now seen corresponding path program 1 times [2024-10-24 03:01:56,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:01:56,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934697566] [2024-10-24 03:01:56,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:01:56,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:01:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:56,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:01:56,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:56,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:01:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:56,526 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 03:01:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:56,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 03:01:56,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:56,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 03:01:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:56,542 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 03:01:56,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:01:56,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934697566] [2024-10-24 03:01:56,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934697566] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:01:56,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:01:56,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 03:01:56,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875895237] [2024-10-24 03:01:56,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:01:56,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 03:01:56,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:01:56,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 03:01:56,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 03:01:56,545 INFO L87 Difference]: Start difference. First operand 2948 states and 3751 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 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 03:01:57,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:01:57,340 INFO L93 Difference]: Finished difference Result 3097 states and 3984 transitions. [2024-10-24 03:01:57,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 03:01:57,341 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 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 62 [2024-10-24 03:01:57,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:01:57,355 INFO L225 Difference]: With dead ends: 3097 [2024-10-24 03:01:57,355 INFO L226 Difference]: Without dead ends: 2978 [2024-10-24 03:01:57,356 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-10-24 03:01:57,358 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 379 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 03:01:57,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 455 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 03:01:57,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2024-10-24 03:01:57,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 2948. [2024-10-24 03:01:57,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2948 states, 2245 states have (on average 1.2962138084632517) internal successors, (2910), 2296 states have internal predecessors, (2910), 346 states have call successors, (346), 286 states have call predecessors, (346), 355 states have return successors, (494), 368 states have call predecessors, (494), 342 states have call successors, (494) [2024-10-24 03:01:57,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2948 states to 2948 states and 3750 transitions. [2024-10-24 03:01:57,771 INFO L78 Accepts]: Start accepts. Automaton has 2948 states and 3750 transitions. Word has length 62 [2024-10-24 03:01:57,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:01:57,771 INFO L471 AbstractCegarLoop]: Abstraction has 2948 states and 3750 transitions. [2024-10-24 03:01:57,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 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 03:01:57,772 INFO L276 IsEmpty]: Start isEmpty. Operand 2948 states and 3750 transitions. [2024-10-24 03:01:57,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-24 03:01:57,774 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:01:57,774 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] [2024-10-24 03:01:57,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 03:01:57,774 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:01:57,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:01:57,775 INFO L85 PathProgramCache]: Analyzing trace with hash -754663797, now seen corresponding path program 1 times [2024-10-24 03:01:57,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:01:57,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457300750] [2024-10-24 03:01:57,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:01:57,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:01:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:57,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:01:57,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:57,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:01:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:57,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 03:01:57,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:57,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 03:01:57,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:57,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 03:01:57,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:57,871 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 03:01:57,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:01:57,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457300750] [2024-10-24 03:01:57,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457300750] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:01:57,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:01:57,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 03:01:57,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069504092] [2024-10-24 03:01:57,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:01:57,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 03:01:57,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:01:57,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 03:01:57,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 03:01:57,874 INFO L87 Difference]: Start difference. First operand 2948 states and 3750 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 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 03:01:58,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:01:58,919 INFO L93 Difference]: Finished difference Result 3237 states and 4200 transitions. [2024-10-24 03:01:58,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 03:01:58,919 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 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 62 [2024-10-24 03:01:58,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:01:58,936 INFO L225 Difference]: With dead ends: 3237 [2024-10-24 03:01:58,936 INFO L226 Difference]: Without dead ends: 3122 [2024-10-24 03:01:58,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-24 03:01:58,940 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 605 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 03:01:58,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 592 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 03:01:58,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2024-10-24 03:01:59,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 3061. [2024-10-24 03:01:59,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3061 states, 2340 states have (on average 1.3068376068376069) internal successors, (3058), 2392 states have internal predecessors, (3058), 357 states have call successors, (357), 292 states have call predecessors, (357), 362 states have return successors, (508), 379 states have call predecessors, (508), 353 states have call successors, (508) [2024-10-24 03:01:59,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3061 states to 3061 states and 3923 transitions. [2024-10-24 03:01:59,353 INFO L78 Accepts]: Start accepts. Automaton has 3061 states and 3923 transitions. Word has length 62 [2024-10-24 03:01:59,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:01:59,354 INFO L471 AbstractCegarLoop]: Abstraction has 3061 states and 3923 transitions. [2024-10-24 03:01:59,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 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 03:01:59,354 INFO L276 IsEmpty]: Start isEmpty. Operand 3061 states and 3923 transitions. [2024-10-24 03:01:59,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-24 03:01:59,355 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:01:59,355 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] [2024-10-24 03:01:59,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 03:01:59,356 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:01:59,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:01:59,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1511717389, now seen corresponding path program 1 times [2024-10-24 03:01:59,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:01:59,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603615688] [2024-10-24 03:01:59,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:01:59,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:01:59,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:59,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:01:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:59,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:01:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:59,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 03:01:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:59,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 03:01:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:59,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 03:01:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:01:59,468 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 03:01:59,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:01:59,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603615688] [2024-10-24 03:01:59,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603615688] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:01:59,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:01:59,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:01:59,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766808324] [2024-10-24 03:01:59,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:01:59,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:01:59,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:01:59,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:01:59,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:01:59,474 INFO L87 Difference]: Start difference. First operand 3061 states and 3923 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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 03:02:00,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:02:00,824 INFO L93 Difference]: Finished difference Result 3492 states and 4586 transitions. [2024-10-24 03:02:00,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 03:02:00,824 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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 62 [2024-10-24 03:02:00,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:02:00,842 INFO L225 Difference]: With dead ends: 3492 [2024-10-24 03:02:00,843 INFO L226 Difference]: Without dead ends: 3264 [2024-10-24 03:02:00,845 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 03:02:00,846 INFO L432 NwaCegarLoop]: 242 mSDtfsCounter, 608 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 1349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 03:02:00,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 988 Invalid, 1349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 03:02:00,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3264 states. [2024-10-24 03:02:01,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3264 to 3167. [2024-10-24 03:02:01,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3167 states, 2428 states have (on average 1.314662273476112) internal successors, (3192), 2481 states have internal predecessors, (3192), 368 states have call successors, (368), 298 states have call predecessors, (368), 369 states have return successors, (521), 391 states have call predecessors, (521), 364 states have call successors, (521) [2024-10-24 03:02:01,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3167 states to 3167 states and 4081 transitions. [2024-10-24 03:02:01,280 INFO L78 Accepts]: Start accepts. Automaton has 3167 states and 4081 transitions. Word has length 62 [2024-10-24 03:02:01,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:02:01,280 INFO L471 AbstractCegarLoop]: Abstraction has 3167 states and 4081 transitions. [2024-10-24 03:02:01,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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 03:02:01,281 INFO L276 IsEmpty]: Start isEmpty. Operand 3167 states and 4081 transitions. [2024-10-24 03:02:01,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-24 03:02:01,282 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:02:01,282 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] [2024-10-24 03:02:01,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 03:02:01,282 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:02:01,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:02:01,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1030637131, now seen corresponding path program 1 times [2024-10-24 03:02:01,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:02:01,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792892347] [2024-10-24 03:02:01,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:02:01,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:02:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:01,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:02:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:01,353 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:02:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:01,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 03:02:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:01,392 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 03:02:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:01,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 03:02:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:01,396 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 03:02:01,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:02:01,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792892347] [2024-10-24 03:02:01,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792892347] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:02:01,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:02:01,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:02:01,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893234130] [2024-10-24 03:02:01,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:02:01,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:02:01,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:02:01,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:02:01,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:02:01,399 INFO L87 Difference]: Start difference. First operand 3167 states and 4081 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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 03:02:02,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:02:02,692 INFO L93 Difference]: Finished difference Result 3928 states and 5248 transitions. [2024-10-24 03:02:02,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 03:02:02,693 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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 62 [2024-10-24 03:02:02,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:02:02,713 INFO L225 Difference]: With dead ends: 3928 [2024-10-24 03:02:02,713 INFO L226 Difference]: Without dead ends: 3594 [2024-10-24 03:02:02,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-24 03:02:02,719 INFO L432 NwaCegarLoop]: 238 mSDtfsCounter, 622 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 1391 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 03:02:02,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 979 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1391 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 03:02:02,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3594 states. [2024-10-24 03:02:03,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3594 to 3379. [2024-10-24 03:02:03,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3379 states, 2606 states have (on average 1.329623944742901) internal successors, (3465), 2661 states have internal predecessors, (3465), 388 states have call successors, (388), 310 states have call predecessors, (388), 383 states have return successors, (549), 413 states have call predecessors, (549), 384 states have call successors, (549) [2024-10-24 03:02:03,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3379 states to 3379 states and 4402 transitions. [2024-10-24 03:02:03,169 INFO L78 Accepts]: Start accepts. Automaton has 3379 states and 4402 transitions. Word has length 62 [2024-10-24 03:02:03,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:02:03,170 INFO L471 AbstractCegarLoop]: Abstraction has 3379 states and 4402 transitions. [2024-10-24 03:02:03,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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 03:02:03,170 INFO L276 IsEmpty]: Start isEmpty. Operand 3379 states and 4402 transitions. [2024-10-24 03:02:03,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-24 03:02:03,173 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:02:03,173 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] [2024-10-24 03:02:03,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 03:02:03,174 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:02:03,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:02:03,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1325168119, now seen corresponding path program 1 times [2024-10-24 03:02:03,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:02:03,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643120179] [2024-10-24 03:02:03,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:02:03,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:02:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:03,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:02:03,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:03,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:02:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:03,272 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 03:02:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:03,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 03:02:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:03,281 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 03:02:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:03,283 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 03:02:03,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:02:03,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643120179] [2024-10-24 03:02:03,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643120179] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:02:03,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:02:03,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:02:03,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986700281] [2024-10-24 03:02:03,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:02:03,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:02:03,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:02:03,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:02:03,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:02:03,287 INFO L87 Difference]: Start difference. First operand 3379 states and 4402 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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 03:02:04,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:02:04,782 INFO L93 Difference]: Finished difference Result 4662 states and 6359 transitions. [2024-10-24 03:02:04,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 03:02:04,782 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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 62 [2024-10-24 03:02:04,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:02:04,801 INFO L225 Difference]: With dead ends: 4662 [2024-10-24 03:02:04,801 INFO L226 Difference]: Without dead ends: 4116 [2024-10-24 03:02:04,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-24 03:02:04,806 INFO L432 NwaCegarLoop]: 237 mSDtfsCounter, 649 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 03:02:04,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 975 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 03:02:04,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4116 states. [2024-10-24 03:02:05,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4116 to 3760. [2024-10-24 03:02:05,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3760 states, 2921 states have (on average 1.3478260869565217) internal successors, (3937), 2980 states have internal predecessors, (3937), 426 states have call successors, (426), 334 states have call predecessors, (426), 411 states have return successors, (609), 455 states have call predecessors, (609), 422 states have call successors, (609) [2024-10-24 03:02:05,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3760 states to 3760 states and 4972 transitions. [2024-10-24 03:02:05,271 INFO L78 Accepts]: Start accepts. Automaton has 3760 states and 4972 transitions. Word has length 62 [2024-10-24 03:02:05,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:02:05,271 INFO L471 AbstractCegarLoop]: Abstraction has 3760 states and 4972 transitions. [2024-10-24 03:02:05,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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 03:02:05,272 INFO L276 IsEmpty]: Start isEmpty. Operand 3760 states and 4972 transitions. [2024-10-24 03:02:05,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-24 03:02:05,273 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:02:05,274 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] [2024-10-24 03:02:05,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 03:02:05,274 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:02:05,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:02:05,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1678256501, now seen corresponding path program 1 times [2024-10-24 03:02:05,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:02:05,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285626554] [2024-10-24 03:02:05,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:02:05,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:02:05,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:05,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:02:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:05,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:02:05,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:05,354 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 03:02:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:05,359 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 03:02:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:05,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 03:02:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:05,363 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 03:02:05,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:02:05,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285626554] [2024-10-24 03:02:05,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285626554] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:02:05,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:02:05,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:02:05,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952908277] [2024-10-24 03:02:05,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:02:05,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:02:05,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:02:05,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:02:05,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:02:05,365 INFO L87 Difference]: Start difference. First operand 3760 states and 4972 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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 03:02:06,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:02:06,207 INFO L93 Difference]: Finished difference Result 4900 states and 6722 transitions. [2024-10-24 03:02:06,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 03:02:06,207 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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 62 [2024-10-24 03:02:06,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:02:06,226 INFO L225 Difference]: With dead ends: 4900 [2024-10-24 03:02:06,226 INFO L226 Difference]: Without dead ends: 3973 [2024-10-24 03:02:06,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-24 03:02:06,231 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 514 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 03:02:06,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 601 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 03:02:06,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3973 states. [2024-10-24 03:02:06,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3973 to 3760. [2024-10-24 03:02:06,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3760 states, 2921 states have (on average 1.344744950359466) internal successors, (3928), 2980 states have internal predecessors, (3928), 426 states have call successors, (426), 334 states have call predecessors, (426), 411 states have return successors, (609), 455 states have call predecessors, (609), 422 states have call successors, (609) [2024-10-24 03:02:06,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3760 states to 3760 states and 4963 transitions. [2024-10-24 03:02:06,630 INFO L78 Accepts]: Start accepts. Automaton has 3760 states and 4963 transitions. Word has length 62 [2024-10-24 03:02:06,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:02:06,631 INFO L471 AbstractCegarLoop]: Abstraction has 3760 states and 4963 transitions. [2024-10-24 03:02:06,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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 03:02:06,632 INFO L276 IsEmpty]: Start isEmpty. Operand 3760 states and 4963 transitions. [2024-10-24 03:02:06,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-24 03:02:06,634 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:02:06,634 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] [2024-10-24 03:02:06,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 03:02:06,634 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:02:06,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:02:06,635 INFO L85 PathProgramCache]: Analyzing trace with hash 250016201, now seen corresponding path program 1 times [2024-10-24 03:02:06,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:02:06,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324745546] [2024-10-24 03:02:06,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:02:06,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:02:06,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:06,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:02:06,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:06,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:02:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:06,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 03:02:06,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:06,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 03:02:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:06,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 03:02:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:06,712 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 03:02:06,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:02:06,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324745546] [2024-10-24 03:02:06,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324745546] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:02:06,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:02:06,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 03:02:06,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132912327] [2024-10-24 03:02:06,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:02:06,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 03:02:06,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:02:06,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 03:02:06,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 03:02:06,714 INFO L87 Difference]: Start difference. First operand 3760 states and 4963 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 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 03:02:07,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:02:07,477 INFO L93 Difference]: Finished difference Result 4897 states and 6701 transitions. [2024-10-24 03:02:07,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 03:02:07,478 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 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 62 [2024-10-24 03:02:07,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:02:07,495 INFO L225 Difference]: With dead ends: 4897 [2024-10-24 03:02:07,495 INFO L226 Difference]: Without dead ends: 3971 [2024-10-24 03:02:07,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-10-24 03:02:07,500 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 231 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 03:02:07,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 700 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 03:02:07,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3971 states. [2024-10-24 03:02:08,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3971 to 3778. [2024-10-24 03:02:08,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3778 states, 2939 states have (on average 1.3426335488261314) internal successors, (3946), 2998 states have internal predecessors, (3946), 426 states have call successors, (426), 334 states have call predecessors, (426), 411 states have return successors, (609), 455 states have call predecessors, (609), 422 states have call successors, (609) [2024-10-24 03:02:08,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3778 states to 3778 states and 4981 transitions. [2024-10-24 03:02:08,106 INFO L78 Accepts]: Start accepts. Automaton has 3778 states and 4981 transitions. Word has length 62 [2024-10-24 03:02:08,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:02:08,106 INFO L471 AbstractCegarLoop]: Abstraction has 3778 states and 4981 transitions. [2024-10-24 03:02:08,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 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 03:02:08,106 INFO L276 IsEmpty]: Start isEmpty. Operand 3778 states and 4981 transitions. [2024-10-24 03:02:08,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-24 03:02:08,108 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:02:08,108 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] [2024-10-24 03:02:08,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 03:02:08,108 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:02:08,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:02:08,109 INFO L85 PathProgramCache]: Analyzing trace with hash -779343097, now seen corresponding path program 1 times [2024-10-24 03:02:08,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:02:08,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343875237] [2024-10-24 03:02:08,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:02:08,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:02:08,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:08,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:02:08,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:08,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:02:08,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:08,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 03:02:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:08,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 03:02:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:08,215 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 03:02:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:08,221 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 03:02:08,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:02:08,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343875237] [2024-10-24 03:02:08,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343875237] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:02:08,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:02:08,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:02:08,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661970363] [2024-10-24 03:02:08,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:02:08,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:02:08,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:02:08,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:02:08,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:02:08,227 INFO L87 Difference]: Start difference. First operand 3778 states and 4981 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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 03:02:09,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:02:09,823 INFO L93 Difference]: Finished difference Result 7010 states and 9947 transitions. [2024-10-24 03:02:09,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-24 03:02:09,824 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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 62 [2024-10-24 03:02:09,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:02:09,848 INFO L225 Difference]: With dead ends: 7010 [2024-10-24 03:02:09,848 INFO L226 Difference]: Without dead ends: 6066 [2024-10-24 03:02:09,854 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2024-10-24 03:02:09,855 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 1292 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 1363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-24 03:02:09,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1312 Valid, 777 Invalid, 1363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-24 03:02:09,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6066 states. [2024-10-24 03:02:10,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6066 to 5544. [2024-10-24 03:02:10,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5544 states, 4393 states have (on average 1.3792396995219667) internal successors, (6059), 4483 states have internal predecessors, (6059), 610 states have call successors, (610), 446 states have call predecessors, (610), 539 states have return successors, (908), 624 states have call predecessors, (908), 606 states have call successors, (908) [2024-10-24 03:02:10,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5544 states to 5544 states and 7577 transitions. [2024-10-24 03:02:10,536 INFO L78 Accepts]: Start accepts. Automaton has 5544 states and 7577 transitions. Word has length 62 [2024-10-24 03:02:10,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:02:10,536 INFO L471 AbstractCegarLoop]: Abstraction has 5544 states and 7577 transitions. [2024-10-24 03:02:10,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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 03:02:10,537 INFO L276 IsEmpty]: Start isEmpty. Operand 5544 states and 7577 transitions. [2024-10-24 03:02:10,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-24 03:02:10,539 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:02:10,539 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] [2024-10-24 03:02:10,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 03:02:10,539 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:02:10,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:02:10,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1532828887, now seen corresponding path program 1 times [2024-10-24 03:02:10,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:02:10,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817547453] [2024-10-24 03:02:10,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:02:10,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:02:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:10,571 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:02:10,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:10,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:02:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:10,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:02:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:10,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:02:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:10,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:02:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:10,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:02:10,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:10,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:02:10,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:10,602 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 03:02:10,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:02:10,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817547453] [2024-10-24 03:02:10,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817547453] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:02:10,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:02:10,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 03:02:10,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638425439] [2024-10-24 03:02:10,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:02:10,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 03:02:10,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:02:10,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 03:02:10,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 03:02:10,604 INFO L87 Difference]: Start difference. First operand 5544 states and 7577 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-24 03:02:11,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:02:11,792 INFO L93 Difference]: Finished difference Result 8847 states and 11724 transitions. [2024-10-24 03:02:11,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 03:02:11,792 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2024-10-24 03:02:11,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:02:11,816 INFO L225 Difference]: With dead ends: 8847 [2024-10-24 03:02:11,816 INFO L226 Difference]: Without dead ends: 6031 [2024-10-24 03:02:11,824 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-10-24 03:02:11,825 INFO L432 NwaCegarLoop]: 189 mSDtfsCounter, 544 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 03:02:11,825 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 611 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 03:02:11,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6031 states. [2024-10-24 03:02:12,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6031 to 5802. [2024-10-24 03:02:12,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5802 states, 4593 states have (on average 1.3720879599390376) internal successors, (6302), 4686 states have internal predecessors, (6302), 638 states have call successors, (638), 471 states have call predecessors, (638), 569 states have return successors, (942), 654 states have call predecessors, (942), 634 states have call successors, (942) [2024-10-24 03:02:12,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5802 states to 5802 states and 7882 transitions. [2024-10-24 03:02:12,503 INFO L78 Accepts]: Start accepts. Automaton has 5802 states and 7882 transitions. Word has length 66 [2024-10-24 03:02:12,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:02:12,504 INFO L471 AbstractCegarLoop]: Abstraction has 5802 states and 7882 transitions. [2024-10-24 03:02:12,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-24 03:02:12,504 INFO L276 IsEmpty]: Start isEmpty. Operand 5802 states and 7882 transitions. [2024-10-24 03:02:12,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-24 03:02:12,507 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:02:12,507 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:02:12,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 03:02:12,507 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:02:12,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:02:12,508 INFO L85 PathProgramCache]: Analyzing trace with hash -243171438, now seen corresponding path program 1 times [2024-10-24 03:02:12,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:02:12,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152230583] [2024-10-24 03:02:12,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:02:12,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:02:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:12,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:02:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:12,577 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:02:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:12,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:02:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:12,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:02:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:12,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:02:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:12,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:02:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:12,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:02:12,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:12,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:02:12,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:02:12,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152230583] [2024-10-24 03:02:12,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152230583] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:02:12,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:02:12,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:02:12,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605784170] [2024-10-24 03:02:12,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:02:12,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:02:12,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:02:12,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:02:12,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:02:12,609 INFO L87 Difference]: Start difference. First operand 5802 states and 7882 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-24 03:02:14,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:02:14,207 INFO L93 Difference]: Finished difference Result 6778 states and 9071 transitions. [2024-10-24 03:02:14,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 03:02:14,208 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 67 [2024-10-24 03:02:14,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:02:14,228 INFO L225 Difference]: With dead ends: 6778 [2024-10-24 03:02:14,228 INFO L226 Difference]: Without dead ends: 6775 [2024-10-24 03:02:14,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2024-10-24 03:02:14,230 INFO L432 NwaCegarLoop]: 183 mSDtfsCounter, 979 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 03:02:14,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 461 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 03:02:14,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6775 states. [2024-10-24 03:02:14,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6775 to 6491. [2024-10-24 03:02:14,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6491 states, 5103 states have (on average 1.358612580834803) internal successors, (6933), 5203 states have internal predecessors, (6933), 721 states have call successors, (721), 543 states have call predecessors, (721), 665 states have return successors, (1070), 754 states have call predecessors, (1070), 718 states have call successors, (1070) [2024-10-24 03:02:14,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6491 states to 6491 states and 8724 transitions. [2024-10-24 03:02:14,870 INFO L78 Accepts]: Start accepts. Automaton has 6491 states and 8724 transitions. Word has length 67 [2024-10-24 03:02:14,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:02:14,871 INFO L471 AbstractCegarLoop]: Abstraction has 6491 states and 8724 transitions. [2024-10-24 03:02:14,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-24 03:02:14,871 INFO L276 IsEmpty]: Start isEmpty. Operand 6491 states and 8724 transitions. [2024-10-24 03:02:14,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-24 03:02:14,873 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:02:14,873 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:02:14,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 03:02:14,874 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:02:14,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:02:14,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1050889345, now seen corresponding path program 1 times [2024-10-24 03:02:14,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:02:14,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284193833] [2024-10-24 03:02:14,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:02:14,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:02:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:14,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:02:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:14,961 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:02:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:14,972 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:02:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:14,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:02:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:14,979 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:02:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:14,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:02:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:14,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:02:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:14,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:02:14,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:02:14,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284193833] [2024-10-24 03:02:14,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284193833] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 03:02:14,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130049423] [2024-10-24 03:02:14,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:02:14,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:02:14,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:02:14,990 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 03:02:14,992 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 03:02:15,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:15,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 03:02:15,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 03:02:15,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:02:15,317 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 03:02:15,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:02:15,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130049423] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 03:02:15,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 03:02:15,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2024-10-24 03:02:15,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181497613] [2024-10-24 03:02:15,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 03:02:15,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 03:02:15,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:02:15,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 03:02:15,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-10-24 03:02:15,419 INFO L87 Difference]: Start difference. First operand 6491 states and 8724 transitions. Second operand has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-10-24 03:02:18,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:02:18,028 INFO L93 Difference]: Finished difference Result 10556 states and 13744 transitions. [2024-10-24 03:02:18,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-24 03:02:18,029 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 68 [2024-10-24 03:02:18,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:02:18,066 INFO L225 Difference]: With dead ends: 10556 [2024-10-24 03:02:18,066 INFO L226 Difference]: Without dead ends: 10553 [2024-10-24 03:02:18,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2024-10-24 03:02:18,073 INFO L432 NwaCegarLoop]: 252 mSDtfsCounter, 1194 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1250 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 1469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-24 03:02:18,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1250 Valid, 1008 Invalid, 1469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-24 03:02:18,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10553 states. [2024-10-24 03:02:19,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10553 to 9742. [2024-10-24 03:02:19,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9742 states, 7580 states have (on average 1.3269129287598944) internal successors, (10058), 7731 states have internal predecessors, (10058), 1091 states have call successors, (1091), 868 states have call predecessors, (1091), 1069 states have return successors, (1616), 1152 states have call predecessors, (1616), 1088 states have call successors, (1616) [2024-10-24 03:02:19,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9742 states to 9742 states and 12765 transitions. [2024-10-24 03:02:19,532 INFO L78 Accepts]: Start accepts. Automaton has 9742 states and 12765 transitions. Word has length 68 [2024-10-24 03:02:19,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:02:19,532 INFO L471 AbstractCegarLoop]: Abstraction has 9742 states and 12765 transitions. [2024-10-24 03:02:19,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-10-24 03:02:19,533 INFO L276 IsEmpty]: Start isEmpty. Operand 9742 states and 12765 transitions. [2024-10-24 03:02:19,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-24 03:02:19,538 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:02:19,538 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:02:19,557 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 03:02:19,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:02:19,740 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:02:19,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:02:19,740 INFO L85 PathProgramCache]: Analyzing trace with hash 104005074, now seen corresponding path program 2 times [2024-10-24 03:02:19,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:02:19,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844346163] [2024-10-24 03:02:19,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:02:19,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:02:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:19,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:02:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:19,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:02:19,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:19,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:02:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:19,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:02:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:19,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:02:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:19,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:02:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:19,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:02:19,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:19,800 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:02:19,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:02:19,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844346163] [2024-10-24 03:02:19,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844346163] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:02:19,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:02:19,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 03:02:19,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868768474] [2024-10-24 03:02:19,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:02:19,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 03:02:19,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:02:19,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 03:02:19,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 03:02:19,802 INFO L87 Difference]: Start difference. First operand 9742 states and 12765 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-24 03:02:21,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:02:21,015 INFO L93 Difference]: Finished difference Result 12511 states and 16249 transitions. [2024-10-24 03:02:21,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 03:02:21,016 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 71 [2024-10-24 03:02:21,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:02:21,045 INFO L225 Difference]: With dead ends: 12511 [2024-10-24 03:02:21,046 INFO L226 Difference]: Without dead ends: 6299 [2024-10-24 03:02:21,060 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-10-24 03:02:21,061 INFO L432 NwaCegarLoop]: 203 mSDtfsCounter, 499 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 03:02:21,061 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 646 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 03:02:21,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6299 states. [2024-10-24 03:02:21,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6299 to 5345. [2024-10-24 03:02:21,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5345 states, 4249 states have (on average 1.364321016709814) internal successors, (5797), 4322 states have internal predecessors, (5797), 591 states have call successors, (591), 433 states have call predecessors, (591), 503 states have return successors, (842), 599 states have call predecessors, (842), 588 states have call successors, (842) [2024-10-24 03:02:21,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5345 states to 5345 states and 7230 transitions. [2024-10-24 03:02:21,697 INFO L78 Accepts]: Start accepts. Automaton has 5345 states and 7230 transitions. Word has length 71 [2024-10-24 03:02:21,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:02:21,697 INFO L471 AbstractCegarLoop]: Abstraction has 5345 states and 7230 transitions. [2024-10-24 03:02:21,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-24 03:02:21,697 INFO L276 IsEmpty]: Start isEmpty. Operand 5345 states and 7230 transitions. [2024-10-24 03:02:21,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-24 03:02:21,701 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:02:21,702 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:02:21,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-24 03:02:21,702 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:02:21,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:02:21,703 INFO L85 PathProgramCache]: Analyzing trace with hash 178274904, now seen corresponding path program 1 times [2024-10-24 03:02:21,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:02:21,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270345553] [2024-10-24 03:02:21,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:02:21,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:02:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:21,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:02:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:21,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:02:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:21,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:02:21,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:21,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:02:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:21,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:02:21,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:21,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:02:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:21,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:02:21,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:21,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 03:02:21,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:21,802 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 03:02:21,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:02:21,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270345553] [2024-10-24 03:02:21,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270345553] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:02:21,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:02:21,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 03:02:21,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141097143] [2024-10-24 03:02:21,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:02:21,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 03:02:21,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:02:21,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 03:02:21,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-24 03:02:21,803 INFO L87 Difference]: Start difference. First operand 5345 states and 7230 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-24 03:02:23,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:02:23,429 INFO L93 Difference]: Finished difference Result 10612 states and 13697 transitions. [2024-10-24 03:02:23,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-24 03:02:23,429 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2024-10-24 03:02:23,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:02:23,461 INFO L225 Difference]: With dead ends: 10612 [2024-10-24 03:02:23,462 INFO L226 Difference]: Without dead ends: 7127 [2024-10-24 03:02:23,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2024-10-24 03:02:23,475 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 1025 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 03:02:23,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1037 Valid, 759 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 03:02:23,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7127 states. [2024-10-24 03:02:24,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7127 to 6896. [2024-10-24 03:02:24,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6896 states, 5397 states have (on average 1.3255512321660181) internal successors, (7154), 5507 states have internal predecessors, (7154), 775 states have call successors, (775), 591 states have call predecessors, (775), 722 states have return successors, (1163), 807 states have call predecessors, (1163), 772 states have call successors, (1163) [2024-10-24 03:02:24,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6896 states to 6896 states and 9092 transitions. [2024-10-24 03:02:24,514 INFO L78 Accepts]: Start accepts. Automaton has 6896 states and 9092 transitions. Word has length 76 [2024-10-24 03:02:24,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:02:24,515 INFO L471 AbstractCegarLoop]: Abstraction has 6896 states and 9092 transitions. [2024-10-24 03:02:24,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-24 03:02:24,515 INFO L276 IsEmpty]: Start isEmpty. Operand 6896 states and 9092 transitions. [2024-10-24 03:02:24,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-24 03:02:24,520 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:02:24,520 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:02:24,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-24 03:02:24,521 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:02:24,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:02:24,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1670249923, now seen corresponding path program 1 times [2024-10-24 03:02:24,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:02:24,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703265050] [2024-10-24 03:02:24,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:02:24,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:02:24,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:24,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:02:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:24,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:02:24,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:24,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:02:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:24,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:02:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:24,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:02:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:24,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:02:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:24,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:02:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:24,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 03:02:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:24,624 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 03:02:24,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:02:24,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703265050] [2024-10-24 03:02:24,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703265050] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:02:24,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:02:24,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-24 03:02:24,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774617021] [2024-10-24 03:02:24,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:02:24,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 03:02:24,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:02:24,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 03:02:24,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-24 03:02:24,626 INFO L87 Difference]: Start difference. First operand 6896 states and 9092 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-24 03:02:26,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:02:26,166 INFO L93 Difference]: Finished difference Result 9546 states and 12347 transitions. [2024-10-24 03:02:26,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-24 03:02:26,167 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 86 [2024-10-24 03:02:26,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:02:26,193 INFO L225 Difference]: With dead ends: 9546 [2024-10-24 03:02:26,193 INFO L226 Difference]: Without dead ends: 6052 [2024-10-24 03:02:26,205 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2024-10-24 03:02:26,206 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 1310 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 03:02:26,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1339 Valid, 896 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 03:02:26,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6052 states. [2024-10-24 03:02:27,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6052 to 5690. [2024-10-24 03:02:27,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5690 states, 4475 states have (on average 1.3369832402234636) internal successors, (5983), 4568 states have internal predecessors, (5983), 633 states have call successors, (633), 467 states have call predecessors, (633), 580 states have return successors, (928), 664 states have call predecessors, (928), 630 states have call successors, (928) [2024-10-24 03:02:27,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5690 states to 5690 states and 7544 transitions. [2024-10-24 03:02:27,036 INFO L78 Accepts]: Start accepts. Automaton has 5690 states and 7544 transitions. Word has length 86 [2024-10-24 03:02:27,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:02:27,037 INFO L471 AbstractCegarLoop]: Abstraction has 5690 states and 7544 transitions. [2024-10-24 03:02:27,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-24 03:02:27,037 INFO L276 IsEmpty]: Start isEmpty. Operand 5690 states and 7544 transitions. [2024-10-24 03:02:27,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-24 03:02:27,043 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:02:27,044 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:02:27,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-24 03:02:27,044 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:02:27,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:02:27,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1894959182, now seen corresponding path program 1 times [2024-10-24 03:02:27,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:02:27,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162239312] [2024-10-24 03:02:27,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:02:27,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:02:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:27,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:02:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:27,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:02:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:27,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 03:02:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:27,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 03:02:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:27,117 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 03:02:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:27,118 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 03:02:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:27,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:02:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:27,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-24 03:02:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:27,131 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-24 03:02:27,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:02:27,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162239312] [2024-10-24 03:02:27,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162239312] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 03:02:27,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737215940] [2024-10-24 03:02:27,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:02:27,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:02:27,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:02:27,134 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 03:02:27,137 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 03:02:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:27,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 03:02:27,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 03:02:27,251 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-24 03:02:27,252 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 03:02:27,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737215940] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:02:27,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 03:02:27,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-24 03:02:27,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717381467] [2024-10-24 03:02:27,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:02:27,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 03:02:27,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:02:27,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 03:02:27,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:02:27,254 INFO L87 Difference]: Start difference. First operand 5690 states and 7544 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-24 03:02:28,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:02:28,294 INFO L93 Difference]: Finished difference Result 8593 states and 11937 transitions. [2024-10-24 03:02:28,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 03:02:28,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 100 [2024-10-24 03:02:28,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:02:28,319 INFO L225 Difference]: With dead ends: 8593 [2024-10-24 03:02:28,319 INFO L226 Difference]: Without dead ends: 6176 [2024-10-24 03:02:28,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:02:28,332 INFO L432 NwaCegarLoop]: 405 mSDtfsCounter, 133 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 03:02:28,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 683 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 03:02:28,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6176 states. [2024-10-24 03:02:29,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6176 to 6176. [2024-10-24 03:02:29,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6176 states, 4878 states have (on average 1.346248462484625) internal successors, (6567), 4975 states have internal predecessors, (6567), 682 states have call successors, (682), 497 states have call predecessors, (682), 614 states have return successors, (1006), 713 states have call predecessors, (1006), 679 states have call successors, (1006) [2024-10-24 03:02:29,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6176 states to 6176 states and 8255 transitions. [2024-10-24 03:02:29,253 INFO L78 Accepts]: Start accepts. Automaton has 6176 states and 8255 transitions. Word has length 100 [2024-10-24 03:02:29,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:02:29,254 INFO L471 AbstractCegarLoop]: Abstraction has 6176 states and 8255 transitions. [2024-10-24 03:02:29,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-24 03:02:29,254 INFO L276 IsEmpty]: Start isEmpty. Operand 6176 states and 8255 transitions. [2024-10-24 03:02:29,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-10-24 03:02:29,263 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:02:29,263 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:02:29,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 03:02:29,464 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,SelfDestructingSolverStorable22 [2024-10-24 03:02:29,465 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:02:29,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:02:29,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1644455643, now seen corresponding path program 1 times [2024-10-24 03:02:29,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:02:29,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838828796] [2024-10-24 03:02:29,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:02:29,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:02:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:29,559 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:02:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:29,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:02:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:29,577 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:02:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:29,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:02:29,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:29,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:02:29,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:29,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:02:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:29,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:02:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:29,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 03:02:29,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:29,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 03:02:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:29,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 03:02:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:29,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-24 03:02:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:29,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:02:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:29,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:02:29,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:29,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-24 03:02:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:29,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-24 03:02:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:29,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-10-24 03:02:29,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:29,626 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-24 03:02:29,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:02:29,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838828796] [2024-10-24 03:02:29,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838828796] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 03:02:29,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984619318] [2024-10-24 03:02:29,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:02:29,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:02:29,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:02:29,629 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 03:02:29,631 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 03:02:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:29,744 INFO L255 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 03:02:29,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 03:02:29,791 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 03:02:29,793 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 03:02:29,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984619318] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:02:29,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 03:02:29,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2024-10-24 03:02:29,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471716304] [2024-10-24 03:02:29,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:02:29,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 03:02:29,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:02:29,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 03:02:29,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-24 03:02:29,796 INFO L87 Difference]: Start difference. First operand 6176 states and 8255 transitions. Second operand has 6 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-24 03:02:30,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:02:30,311 INFO L93 Difference]: Finished difference Result 7605 states and 9978 transitions. [2024-10-24 03:02:30,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 03:02:30,311 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 131 [2024-10-24 03:02:30,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:02:30,329 INFO L225 Difference]: With dead ends: 7605 [2024-10-24 03:02:30,330 INFO L226 Difference]: Without dead ends: 4645 [2024-10-24 03:02:30,338 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-24 03:02:30,338 INFO L432 NwaCegarLoop]: 280 mSDtfsCounter, 0 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1393 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 03:02:30,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1393 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 03:02:30,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4645 states. [2024-10-24 03:02:30,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4645 to 4630. [2024-10-24 03:02:30,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4630 states, 3774 states have (on average 1.3863275039745628) internal successors, (5232), 3832 states have internal predecessors, (5232), 474 states have call successors, (474), 314 states have call predecessors, (474), 380 states have return successors, (712), 491 states have call predecessors, (712), 471 states have call successors, (712) [2024-10-24 03:02:30,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4630 states to 4630 states and 6418 transitions. [2024-10-24 03:02:30,881 INFO L78 Accepts]: Start accepts. Automaton has 4630 states and 6418 transitions. Word has length 131 [2024-10-24 03:02:30,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:02:30,881 INFO L471 AbstractCegarLoop]: Abstraction has 4630 states and 6418 transitions. [2024-10-24 03:02:30,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-24 03:02:30,882 INFO L276 IsEmpty]: Start isEmpty. Operand 4630 states and 6418 transitions. [2024-10-24 03:02:30,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-10-24 03:02:30,889 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:02:30,890 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:02:30,909 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 03:02:31,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:02:31,090 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:02:31,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:02:31,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1177748283, now seen corresponding path program 1 times [2024-10-24 03:02:31,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:02:31,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120111854] [2024-10-24 03:02:31,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:02:31,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:02:31,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:31,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:02:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:31,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:02:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:31,152 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 03:02:31,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:31,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 03:02:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:31,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 03:02:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:31,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 03:02:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:31,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:02:31,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:31,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-24 03:02:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:31,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:02:31,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:31,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-24 03:02:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:31,195 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-10-24 03:02:31,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:02:31,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120111854] [2024-10-24 03:02:31,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120111854] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 03:02:31,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69217340] [2024-10-24 03:02:31,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:02:31,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:02:31,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:02:31,197 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 03:02:31,199 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 03:02:31,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:31,307 INFO L255 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 03:02:31,315 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 03:02:31,430 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-24 03:02:31,431 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 03:02:31,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69217340] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:02:31,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 03:02:31,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-10-24 03:02:31,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508366227] [2024-10-24 03:02:31,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:02:31,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 03:02:31,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:02:31,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 03:02:31,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:02:31,433 INFO L87 Difference]: Start difference. First operand 4630 states and 6418 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-24 03:02:32,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:02:32,145 INFO L93 Difference]: Finished difference Result 8108 states and 11662 transitions. [2024-10-24 03:02:32,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 03:02:32,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 128 [2024-10-24 03:02:32,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:02:32,169 INFO L225 Difference]: With dead ends: 8108 [2024-10-24 03:02:32,169 INFO L226 Difference]: Without dead ends: 6105 [2024-10-24 03:02:32,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:02:32,180 INFO L432 NwaCegarLoop]: 279 mSDtfsCounter, 219 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 03:02:32,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 430 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 03:02:32,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6105 states. [2024-10-24 03:02:32,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6105 to 6072. [2024-10-24 03:02:32,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6072 states, 4976 states have (on average 1.4061495176848875) internal successors, (6997), 5051 states have internal predecessors, (6997), 614 states have call successors, (614), 402 states have call predecessors, (614), 480 states have return successors, (913), 626 states have call predecessors, (913), 611 states have call successors, (913) [2024-10-24 03:02:32,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6072 states to 6072 states and 8524 transitions. [2024-10-24 03:02:32,814 INFO L78 Accepts]: Start accepts. Automaton has 6072 states and 8524 transitions. Word has length 128 [2024-10-24 03:02:32,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:02:32,815 INFO L471 AbstractCegarLoop]: Abstraction has 6072 states and 8524 transitions. [2024-10-24 03:02:32,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-24 03:02:32,815 INFO L276 IsEmpty]: Start isEmpty. Operand 6072 states and 8524 transitions. [2024-10-24 03:02:32,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-10-24 03:02:32,823 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:02:32,823 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:02:32,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-24 03:02:33,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:02:33,024 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:02:33,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:02:33,024 INFO L85 PathProgramCache]: Analyzing trace with hash 2096722906, now seen corresponding path program 1 times [2024-10-24 03:02:33,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:02:33,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880299307] [2024-10-24 03:02:33,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:02:33,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:02:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:33,075 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:02:33,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:33,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:02:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:33,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 03:02:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:33,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 03:02:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:33,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 03:02:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:33,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 03:02:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:33,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:02:33,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:33,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-24 03:02:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:33,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:02:33,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:33,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-24 03:02:33,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:33,147 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-24 03:02:33,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:02:33,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880299307] [2024-10-24 03:02:33,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880299307] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 03:02:33,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552573604] [2024-10-24 03:02:33,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:02:33,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:02:33,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:02:33,150 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 03:02:33,153 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 03:02:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:33,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 03:02:33,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 03:02:33,364 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-24 03:02:33,365 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 03:02:33,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552573604] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:02:33,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 03:02:33,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-10-24 03:02:33,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352385323] [2024-10-24 03:02:33,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:02:33,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 03:02:33,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:02:33,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 03:02:33,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:02:33,367 INFO L87 Difference]: Start difference. First operand 6072 states and 8524 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-24 03:02:34,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:02:34,272 INFO L93 Difference]: Finished difference Result 15180 states and 22122 transitions. [2024-10-24 03:02:34,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 03:02:34,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 128 [2024-10-24 03:02:34,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:02:34,321 INFO L225 Difference]: With dead ends: 15180 [2024-10-24 03:02:34,321 INFO L226 Difference]: Without dead ends: 10542 [2024-10-24 03:02:34,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:02:34,342 INFO L432 NwaCegarLoop]: 278 mSDtfsCounter, 224 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 03:02:34,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 429 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 03:02:34,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10542 states. [2024-10-24 03:02:35,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10542 to 10490. [2024-10-24 03:02:35,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10490 states, 8643 states have (on average 1.4249681823440934) internal successors, (12316), 8778 states have internal predecessors, (12316), 1046 states have call successors, (1046), 681 states have call predecessors, (1046), 799 states have return successors, (1557), 1038 states have call predecessors, (1557), 1043 states have call successors, (1557) [2024-10-24 03:02:35,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10490 states to 10490 states and 14919 transitions. [2024-10-24 03:02:35,471 INFO L78 Accepts]: Start accepts. Automaton has 10490 states and 14919 transitions. Word has length 128 [2024-10-24 03:02:35,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:02:35,471 INFO L471 AbstractCegarLoop]: Abstraction has 10490 states and 14919 transitions. [2024-10-24 03:02:35,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-24 03:02:35,472 INFO L276 IsEmpty]: Start isEmpty. Operand 10490 states and 14919 transitions. [2024-10-24 03:02:35,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-10-24 03:02:35,487 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:02:35,487 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:02:35,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 03:02:35,687 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,SelfDestructingSolverStorable25 [2024-10-24 03:02:35,688 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:02:35,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:02:35,688 INFO L85 PathProgramCache]: Analyzing trace with hash -2069395970, now seen corresponding path program 1 times [2024-10-24 03:02:35,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:02:35,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843965000] [2024-10-24 03:02:35,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:02:35,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:02:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:35,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:02:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:35,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:02:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:35,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:02:35,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:35,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:02:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:35,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:02:35,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:35,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:02:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:35,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:02:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:35,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-24 03:02:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:35,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-24 03:02:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:35,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-24 03:02:35,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:35,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-24 03:02:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:35,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:02:35,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:35,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:02:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:35,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-10-24 03:02:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:35,825 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-24 03:02:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:35,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-10-24 03:02:35,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:35,830 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-24 03:02:35,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:02:35,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843965000] [2024-10-24 03:02:35,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843965000] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:02:35,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:02:35,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:02:35,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060548691] [2024-10-24 03:02:35,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:02:35,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:02:35,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:02:35,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:02:35,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:02:35,834 INFO L87 Difference]: Start difference. First operand 10490 states and 14919 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-10-24 03:02:37,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:02:37,040 INFO L93 Difference]: Finished difference Result 11657 states and 16323 transitions. [2024-10-24 03:02:37,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 03:02:37,041 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 145 [2024-10-24 03:02:37,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:02:37,071 INFO L225 Difference]: With dead ends: 11657 [2024-10-24 03:02:37,071 INFO L226 Difference]: Without dead ends: 10398 [2024-10-24 03:02:37,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-24 03:02:37,078 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 378 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 03:02:37,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 746 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 03:02:37,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10398 states. [2024-10-24 03:02:37,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10398 to 10259. [2024-10-24 03:02:37,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10259 states, 8463 states have (on average 1.4306983339241404) internal successors, (12108), 8598 states have internal predecessors, (12108), 1021 states have call successors, (1021), 660 states have call predecessors, (1021), 773 states have return successors, (1519), 1008 states have call predecessors, (1519), 1018 states have call successors, (1519) [2024-10-24 03:02:37,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10259 states to 10259 states and 14648 transitions. [2024-10-24 03:02:37,891 INFO L78 Accepts]: Start accepts. Automaton has 10259 states and 14648 transitions. Word has length 145 [2024-10-24 03:02:37,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:02:37,892 INFO L471 AbstractCegarLoop]: Abstraction has 10259 states and 14648 transitions. [2024-10-24 03:02:37,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-10-24 03:02:37,892 INFO L276 IsEmpty]: Start isEmpty. Operand 10259 states and 14648 transitions. [2024-10-24 03:02:37,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-10-24 03:02:37,902 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:02:37,902 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:02:37,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-24 03:02:37,902 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:02:37,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:02:37,903 INFO L85 PathProgramCache]: Analyzing trace with hash -2105371629, now seen corresponding path program 1 times [2024-10-24 03:02:37,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:02:37,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808667087] [2024-10-24 03:02:37,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:02:37,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:02:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:38,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:02:38,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:38,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:02:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:38,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:02:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:38,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:02:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:38,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:02:38,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:38,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:02:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:38,095 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:02:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:38,097 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-24 03:02:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:38,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-24 03:02:38,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:38,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-24 03:02:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:38,117 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-24 03:02:38,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:38,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:02:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:38,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:02:38,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:38,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-24 03:02:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:38,135 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-10-24 03:02:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:38,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-10-24 03:02:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:38,138 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-10-24 03:02:38,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:02:38,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808667087] [2024-10-24 03:02:38,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808667087] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 03:02:38,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407894474] [2024-10-24 03:02:38,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:02:38,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:02:38,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:02:38,141 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 03:02:38,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 03:02:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:38,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 03:02:38,254 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 03:02:38,383 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-24 03:02:38,383 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 03:02:38,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407894474] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:02:38,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 03:02:38,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-10-24 03:02:38,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331503232] [2024-10-24 03:02:38,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:02:38,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 03:02:38,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:02:38,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 03:02:38,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-10-24 03:02:38,386 INFO L87 Difference]: Start difference. First operand 10259 states and 14648 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-10-24 03:02:39,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:02:39,494 INFO L93 Difference]: Finished difference Result 12369 states and 17240 transitions. [2024-10-24 03:02:39,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 03:02:39,495 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 147 [2024-10-24 03:02:39,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:02:39,527 INFO L225 Difference]: With dead ends: 12369 [2024-10-24 03:02:39,527 INFO L226 Difference]: Without dead ends: 11087 [2024-10-24 03:02:39,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-10-24 03:02:39,535 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 167 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 03:02:39,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 449 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 03:02:39,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11087 states. [2024-10-24 03:02:40,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11087 to 11048. [2024-10-24 03:02:40,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11048 states, 9109 states have (on average 1.411790536831705) internal successors, (12860), 9248 states have internal predecessors, (12860), 1091 states have call successors, (1091), 711 states have call predecessors, (1091), 846 states have return successors, (1630), 1096 states have call predecessors, (1630), 1088 states have call successors, (1630) [2024-10-24 03:02:40,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11048 states to 11048 states and 15581 transitions. [2024-10-24 03:02:40,519 INFO L78 Accepts]: Start accepts. Automaton has 11048 states and 15581 transitions. Word has length 147 [2024-10-24 03:02:40,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:02:40,520 INFO L471 AbstractCegarLoop]: Abstraction has 11048 states and 15581 transitions. [2024-10-24 03:02:40,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-10-24 03:02:40,520 INFO L276 IsEmpty]: Start isEmpty. Operand 11048 states and 15581 transitions. [2024-10-24 03:02:40,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-10-24 03:02:40,531 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:02:40,532 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:02:40,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 03:02:40,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-24 03:02:40,733 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:02:40,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:02:40,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1607928724, now seen corresponding path program 1 times [2024-10-24 03:02:40,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:02:40,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851348301] [2024-10-24 03:02:40,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:02:40,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:02:40,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:40,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:02:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:40,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:02:40,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:40,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 03:02:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:40,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 03:02:40,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:40,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 03:02:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:40,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 03:02:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:40,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-24 03:02:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:40,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:02:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:40,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-10-24 03:02:40,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:40,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:02:40,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:40,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-24 03:02:40,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:40,843 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-24 03:02:40,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:02:40,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851348301] [2024-10-24 03:02:40,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851348301] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 03:02:40,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238839500] [2024-10-24 03:02:40,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:02:40,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:02:40,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:02:40,847 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 03:02:40,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 03:02:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:40,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 03:02:40,961 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 03:02:41,038 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-24 03:02:41,038 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 03:02:41,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238839500] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:02:41,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 03:02:41,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-24 03:02:41,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824866097] [2024-10-24 03:02:41,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:02:41,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 03:02:41,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:02:41,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 03:02:41,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:02:41,039 INFO L87 Difference]: Start difference. First operand 11048 states and 15581 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-24 03:02:41,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:02:41,833 INFO L93 Difference]: Finished difference Result 16297 states and 23258 transitions. [2024-10-24 03:02:41,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 03:02:41,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 144 [2024-10-24 03:02:41,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:02:41,870 INFO L225 Difference]: With dead ends: 16297 [2024-10-24 03:02:41,870 INFO L226 Difference]: Without dead ends: 8272 [2024-10-24 03:02:41,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:02:41,895 INFO L432 NwaCegarLoop]: 275 mSDtfsCounter, 241 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 03:02:41,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 303 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 03:02:41,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8272 states. [2024-10-24 03:02:42,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8272 to 7812. [2024-10-24 03:02:42,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7812 states, 6438 states have (on average 1.3432743087915502) internal successors, (8648), 6511 states have internal predecessors, (8648), 752 states have call successors, (752), 527 states have call predecessors, (752), 620 states have return successors, (1000), 777 states have call predecessors, (1000), 749 states have call successors, (1000) [2024-10-24 03:02:42,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7812 states to 7812 states and 10400 transitions. [2024-10-24 03:02:42,834 INFO L78 Accepts]: Start accepts. Automaton has 7812 states and 10400 transitions. Word has length 144 [2024-10-24 03:02:42,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:02:42,834 INFO L471 AbstractCegarLoop]: Abstraction has 7812 states and 10400 transitions. [2024-10-24 03:02:42,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-24 03:02:42,835 INFO L276 IsEmpty]: Start isEmpty. Operand 7812 states and 10400 transitions. [2024-10-24 03:02:42,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-10-24 03:02:42,842 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:02:42,842 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:02:42,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 03:02:43,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:02:43,043 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:02:43,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:02:43,044 INFO L85 PathProgramCache]: Analyzing trace with hash -694760969, now seen corresponding path program 1 times [2024-10-24 03:02:43,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:02:43,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915781459] [2024-10-24 03:02:43,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:02:43,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:02:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:43,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:02:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:43,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:02:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:43,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 03:02:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:43,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 03:02:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:43,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 03:02:43,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:43,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 03:02:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:43,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-24 03:02:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:43,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:02:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:43,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-24 03:02:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:43,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:02:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:43,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-24 03:02:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:43,159 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-24 03:02:43,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:02:43,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915781459] [2024-10-24 03:02:43,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915781459] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 03:02:43,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675119999] [2024-10-24 03:02:43,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:02:43,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:02:43,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:02:43,163 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 03:02:43,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 03:02:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:43,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 03:02:43,276 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 03:02:43,292 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-10-24 03:02:43,292 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 03:02:43,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675119999] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:02:43,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 03:02:43,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-24 03:02:43,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660096549] [2024-10-24 03:02:43,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:02:43,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 03:02:43,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:02:43,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 03:02:43,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:02:43,294 INFO L87 Difference]: Start difference. First operand 7812 states and 10400 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-24 03:02:44,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:02:44,126 INFO L93 Difference]: Finished difference Result 14139 states and 19084 transitions. [2024-10-24 03:02:44,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 03:02:44,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 144 [2024-10-24 03:02:44,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:02:44,165 INFO L225 Difference]: With dead ends: 14139 [2024-10-24 03:02:44,167 INFO L226 Difference]: Without dead ends: 8320 [2024-10-24 03:02:44,182 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:02:44,184 INFO L432 NwaCegarLoop]: 290 mSDtfsCounter, 264 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 03:02:44,187 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 435 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 03:02:44,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8320 states. [2024-10-24 03:02:45,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8320 to 8195. [2024-10-24 03:02:45,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8195 states, 6784 states have (on average 1.3170695754716981) internal successors, (8935), 6852 states have internal predecessors, (8935), 754 states have call successors, (754), 559 states have call predecessors, (754), 655 states have return successors, (996), 787 states have call predecessors, (996), 751 states have call successors, (996) [2024-10-24 03:02:45,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8195 states to 8195 states and 10685 transitions. [2024-10-24 03:02:45,092 INFO L78 Accepts]: Start accepts. Automaton has 8195 states and 10685 transitions. Word has length 144 [2024-10-24 03:02:45,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:02:45,092 INFO L471 AbstractCegarLoop]: Abstraction has 8195 states and 10685 transitions. [2024-10-24 03:02:45,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-24 03:02:45,092 INFO L276 IsEmpty]: Start isEmpty. Operand 8195 states and 10685 transitions. [2024-10-24 03:02:45,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-10-24 03:02:45,098 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:02:45,098 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:02:45,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-24 03:02:45,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:02:45,299 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:02:45,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:02:45,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1741339516, now seen corresponding path program 1 times [2024-10-24 03:02:45,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:02:45,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787159471] [2024-10-24 03:02:45,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:02:45,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:02:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:45,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:02:45,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:45,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:02:45,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:45,359 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 03:02:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:45,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 03:02:45,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:45,382 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 03:02:45,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:45,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 03:02:45,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:45,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:02:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:45,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-24 03:02:45,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:45,391 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-24 03:02:45,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:45,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:02:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:45,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-24 03:02:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:45,398 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-24 03:02:45,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:02:45,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787159471] [2024-10-24 03:02:45,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787159471] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 03:02:45,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744933621] [2024-10-24 03:02:45,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:02:45,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:02:45,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:02:45,401 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 03:02:45,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 03:02:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:45,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 03:02:45,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 03:02:45,539 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-24 03:02:45,539 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 03:02:45,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744933621] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:02:45,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 03:02:45,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-24 03:02:45,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90576827] [2024-10-24 03:02:45,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:02:45,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 03:02:45,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:02:45,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 03:02:45,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:02:45,541 INFO L87 Difference]: Start difference. First operand 8195 states and 10685 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-24 03:02:46,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:02:46,611 INFO L93 Difference]: Finished difference Result 19656 states and 26268 transitions. [2024-10-24 03:02:46,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 03:02:46,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 145 [2024-10-24 03:02:46,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:02:46,652 INFO L225 Difference]: With dead ends: 19656 [2024-10-24 03:02:46,652 INFO L226 Difference]: Without dead ends: 13454 [2024-10-24 03:02:46,666 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:02:46,666 INFO L432 NwaCegarLoop]: 409 mSDtfsCounter, 144 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 03:02:46,667 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 683 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 03:02:46,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13454 states. [2024-10-24 03:02:47,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13454 to 13450. [2024-10-24 03:02:47,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13450 states, 11136 states have (on average 1.3247126436781609) internal successors, (14752), 11254 states have internal predecessors, (14752), 1261 states have call successors, (1261), 914 states have call predecessors, (1261), 1051 states have return successors, (1831), 1289 states have call predecessors, (1831), 1258 states have call successors, (1831) [2024-10-24 03:02:47,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13450 states to 13450 states and 17844 transitions. [2024-10-24 03:02:47,922 INFO L78 Accepts]: Start accepts. Automaton has 13450 states and 17844 transitions. Word has length 145 [2024-10-24 03:02:47,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:02:47,922 INFO L471 AbstractCegarLoop]: Abstraction has 13450 states and 17844 transitions. [2024-10-24 03:02:47,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-24 03:02:47,923 INFO L276 IsEmpty]: Start isEmpty. Operand 13450 states and 17844 transitions. [2024-10-24 03:02:47,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-10-24 03:02:47,931 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:02:47,931 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:02:47,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-24 03:02:48,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:02:48,132 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:02:48,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:02:48,132 INFO L85 PathProgramCache]: Analyzing trace with hash -172480370, now seen corresponding path program 1 times [2024-10-24 03:02:48,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:02:48,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494117863] [2024-10-24 03:02:48,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:02:48,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:02:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:48,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:02:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:48,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:02:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:48,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 03:02:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:48,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 03:02:48,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:48,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 03:02:48,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:48,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 03:02:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:48,215 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-24 03:02:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:48,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:02:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:48,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-24 03:02:48,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:48,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:02:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:48,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-10-24 03:02:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:48,229 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-10-24 03:02:48,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:02:48,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494117863] [2024-10-24 03:02:48,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494117863] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 03:02:48,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406936813] [2024-10-24 03:02:48,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:02:48,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:02:48,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:02:48,232 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 03:02:48,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-24 03:02:48,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:48,339 INFO L255 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 03:02:48,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 03:02:48,379 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-24 03:02:48,380 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 03:02:48,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406936813] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:02:48,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 03:02:48,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-24 03:02:48,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075155400] [2024-10-24 03:02:48,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:02:48,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 03:02:48,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:02:48,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 03:02:48,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:02:48,382 INFO L87 Difference]: Start difference. First operand 13450 states and 17844 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-24 03:02:50,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:02:50,302 INFO L93 Difference]: Finished difference Result 35813 states and 48654 transitions. [2024-10-24 03:02:50,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 03:02:50,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 146 [2024-10-24 03:02:50,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:02:50,376 INFO L225 Difference]: With dead ends: 35813 [2024-10-24 03:02:50,376 INFO L226 Difference]: Without dead ends: 24360 [2024-10-24 03:02:50,405 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:02:50,406 INFO L432 NwaCegarLoop]: 301 mSDtfsCounter, 260 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 03:02:50,406 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 456 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 03:02:50,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24360 states. [2024-10-24 03:02:52,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24360 to 24144. [2024-10-24 03:02:52,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24144 states, 20068 states have (on average 1.3245963723340641) internal successors, (26582), 20286 states have internal predecessors, (26582), 2231 states have call successors, (2231), 1630 states have call predecessors, (2231), 1843 states have return successors, (3908), 2243 states have call predecessors, (3908), 2228 states have call successors, (3908) [2024-10-24 03:02:52,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24144 states to 24144 states and 32721 transitions. [2024-10-24 03:02:52,874 INFO L78 Accepts]: Start accepts. Automaton has 24144 states and 32721 transitions. Word has length 146 [2024-10-24 03:02:52,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:02:52,875 INFO L471 AbstractCegarLoop]: Abstraction has 24144 states and 32721 transitions. [2024-10-24 03:02:52,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-24 03:02:52,875 INFO L276 IsEmpty]: Start isEmpty. Operand 24144 states and 32721 transitions. [2024-10-24 03:02:52,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-10-24 03:02:52,891 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:02:52,891 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:02:52,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-24 03:02:53,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-10-24 03:02:53,092 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:02:53,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:02:53,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1046343504, now seen corresponding path program 1 times [2024-10-24 03:02:53,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:02:53,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475477392] [2024-10-24 03:02:53,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:02:53,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:02:53,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:53,118 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:02:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:53,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:02:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:53,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 03:02:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:53,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 03:02:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:53,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 03:02:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:53,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 03:02:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:53,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-24 03:02:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:53,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:02:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:53,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-24 03:02:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:53,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:02:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:53,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-10-24 03:02:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:02:53,162 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-10-24 03:02:53,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:02:53,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475477392] [2024-10-24 03:02:53,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475477392] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:02:53,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:02:53,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 03:02:53,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24315608] [2024-10-24 03:02:53,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:02:53,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 03:02:53,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:02:53,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 03:02:53,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 03:02:53,164 INFO L87 Difference]: Start difference. First operand 24144 states and 32721 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8)