./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.09.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.09.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 39b635cc2ab0f0d4f8e606a07f9fc2cea48a2218c52549f8b5aa54058d2e5b4b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 04:05:56,184 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 04:05:56,278 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 04:05:56,284 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 04:05:56,284 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 04:05:56,316 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 04:05:56,317 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 04:05:56,317 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 04:05:56,318 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 04:05:56,319 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 04:05:56,320 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 04:05:56,320 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 04:05:56,321 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 04:05:56,321 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 04:05:56,323 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 04:05:56,323 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 04:05:56,324 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 04:05:56,325 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 04:05:56,328 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 04:05:56,328 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 04:05:56,328 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 04:05:56,329 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 04:05:56,329 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 04:05:56,330 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 04:05:56,330 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 04:05:56,330 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 04:05:56,330 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 04:05:56,331 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 04:05:56,331 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 04:05:56,331 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 04:05:56,331 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 04:05:56,332 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 04:05:56,332 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 04:05:56,332 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 04:05:56,332 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 04:05:56,333 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 04:05:56,333 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 04:05:56,333 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 04:05:56,334 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 04:05:56,334 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 04:05:56,335 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 04:05:56,336 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 04:05:56,336 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39b635cc2ab0f0d4f8e606a07f9fc2cea48a2218c52549f8b5aa54058d2e5b4b [2024-11-22 04:05:56,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 04:05:56,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 04:05:56,647 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 04:05:56,649 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 04:05:56,649 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 04:05:56,650 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.09.cil-2.c [2024-11-22 04:05:58,174 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 04:05:58,404 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 04:05:58,405 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.09.cil-2.c [2024-11-22 04:05:58,426 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53f244898/17e67402f63946cba1de00da327eac36/FLAG7e3ff7ad7 [2024-11-22 04:05:58,440 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53f244898/17e67402f63946cba1de00da327eac36 [2024-11-22 04:05:58,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 04:05:58,444 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 04:05:58,447 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 04:05:58,447 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 04:05:58,453 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 04:05:58,455 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:05:58" (1/1) ... [2024-11-22 04:05:58,456 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f626f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:05:58, skipping insertion in model container [2024-11-22 04:05:58,456 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:05:58" (1/1) ... [2024-11-22 04:05:58,506 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 04:05:58,695 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.09.cil-2.c[914,927] [2024-11-22 04:05:58,790 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.09.cil-2.c[7115,7128] [2024-11-22 04:05:58,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 04:05:58,947 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 04:05:58,964 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.09.cil-2.c[914,927] [2024-11-22 04:05:58,991 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.09.cil-2.c[7115,7128] [2024-11-22 04:05:59,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 04:05:59,081 INFO L204 MainTranslator]: Completed translation [2024-11-22 04:05:59,081 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:05:59 WrapperNode [2024-11-22 04:05:59,082 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 04:05:59,083 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 04:05:59,083 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 04:05:59,084 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 04:05:59,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:05:59" (1/1) ... [2024-11-22 04:05:59,110 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:05:59" (1/1) ... [2024-11-22 04:05:59,153 INFO L138 Inliner]: procedures = 71, calls = 85, calls flagged for inlining = 39, calls inlined = 39, statements flattened = 894 [2024-11-22 04:05:59,154 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 04:05:59,155 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 04:05:59,155 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 04:05:59,155 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 04:05:59,170 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:05:59" (1/1) ... [2024-11-22 04:05:59,171 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:05:59" (1/1) ... [2024-11-22 04:05:59,180 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:05:59" (1/1) ... [2024-11-22 04:05:59,214 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 04:05:59,215 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:05:59" (1/1) ... [2024-11-22 04:05:59,215 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:05:59" (1/1) ... [2024-11-22 04:05:59,235 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:05:59" (1/1) ... [2024-11-22 04:05:59,256 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:05:59" (1/1) ... [2024-11-22 04:05:59,264 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:05:59" (1/1) ... [2024-11-22 04:05:59,272 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:05:59" (1/1) ... [2024-11-22 04:05:59,283 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 04:05:59,288 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 04:05:59,289 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 04:05:59,291 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 04:05:59,292 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:05:59" (1/1) ... [2024-11-22 04:05:59,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 04:05:59,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 04:05:59,341 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 04:05:59,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 04:05:59,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 04:05:59,426 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-22 04:05:59,426 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-22 04:05:59,427 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-11-22 04:05:59,429 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-11-22 04:05:59,430 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-22 04:05:59,430 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-22 04:05:59,430 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-22 04:05:59,430 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-22 04:05:59,451 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-11-22 04:05:59,452 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-11-22 04:05:59,452 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-22 04:05:59,452 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-22 04:05:59,452 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-22 04:05:59,452 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-22 04:05:59,452 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-11-22 04:05:59,452 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-11-22 04:05:59,452 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-11-22 04:05:59,453 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-11-22 04:05:59,453 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-11-22 04:05:59,453 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-11-22 04:05:59,453 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-22 04:05:59,453 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-22 04:05:59,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 04:05:59,453 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-22 04:05:59,453 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-22 04:05:59,453 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-11-22 04:05:59,453 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-11-22 04:05:59,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 04:05:59,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 04:05:59,454 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-22 04:05:59,454 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-22 04:05:59,454 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-11-22 04:05:59,454 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-11-22 04:05:59,602 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 04:05:59,605 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 04:06:00,595 INFO L? ?]: Removed 113 outVars from TransFormulas that were not future-live. [2024-11-22 04:06:00,595 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 04:06:00,632 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 04:06:00,633 INFO L316 CfgBuilder]: Removed 16 assume(true) statements. [2024-11-22 04:06:00,633 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:06:00 BoogieIcfgContainer [2024-11-22 04:06:00,633 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 04:06:00,636 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 04:06:00,636 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 04:06:00,639 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 04:06:00,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 04:05:58" (1/3) ... [2024-11-22 04:06:00,640 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc186c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:06:00, skipping insertion in model container [2024-11-22 04:06:00,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:05:59" (2/3) ... [2024-11-22 04:06:00,640 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc186c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:06:00, skipping insertion in model container [2024-11-22 04:06:00,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:06:00" (3/3) ... [2024-11-22 04:06:00,642 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.09.cil-2.c [2024-11-22 04:06:00,657 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 04:06:00,657 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-22 04:06:00,741 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 04:06:00,747 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;@59fbdbb4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 04:06:00,747 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-22 04:06:00,755 INFO L276 IsEmpty]: Start isEmpty. Operand has 426 states, 369 states have (on average 1.6151761517615175) internal successors, (596), 377 states have internal predecessors, (596), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-22 04:06:00,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-22 04:06:00,768 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:00,769 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] [2024-11-22 04:06:00,769 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:00,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:00,775 INFO L85 PathProgramCache]: Analyzing trace with hash -661048857, now seen corresponding path program 1 times [2024-11-22 04:06:00,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:00,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773732958] [2024-11-22 04:06:00,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:00,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:01,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:01,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:01,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773732958] [2024-11-22 04:06:01,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773732958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:01,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:01,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:06:01,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882305541] [2024-11-22 04:06:01,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:01,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:06:01,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:01,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:06:01,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:06:01,316 INFO L87 Difference]: Start difference. First operand has 426 states, 369 states have (on average 1.6151761517615175) internal successors, (596), 377 states have internal predecessors, (596), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 04:06:02,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:02,310 INFO L93 Difference]: Finished difference Result 929 states and 1466 transitions. [2024-11-22 04:06:02,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 04:06:02,315 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 3 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 65 [2024-11-22 04:06:02,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:02,336 INFO L225 Difference]: With dead ends: 929 [2024-11-22 04:06:02,337 INFO L226 Difference]: Without dead ends: 518 [2024-11-22 04:06:02,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:02,351 INFO L432 NwaCegarLoop]: 389 mSDtfsCounter, 421 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:02,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 1379 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-22 04:06:02,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2024-11-22 04:06:02,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 511. [2024-11-22 04:06:02,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 437 states have (on average 1.5034324942791761) internal successors, (657), 444 states have internal predecessors, (657), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (51), 47 states have call predecessors, (51), 46 states have call successors, (51) [2024-11-22 04:06:02,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 758 transitions. [2024-11-22 04:06:02,457 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 758 transitions. Word has length 65 [2024-11-22 04:06:02,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:02,458 INFO L471 AbstractCegarLoop]: Abstraction has 511 states and 758 transitions. [2024-11-22 04:06:02,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 04:06:02,459 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 758 transitions. [2024-11-22 04:06:02,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-22 04:06:02,464 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:02,464 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] [2024-11-22 04:06:02,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 04:06:02,465 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:02,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:02,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1017839783, now seen corresponding path program 1 times [2024-11-22 04:06:02,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:02,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359033798] [2024-11-22 04:06:02,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:02,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:02,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:02,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:02,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359033798] [2024-11-22 04:06:02,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359033798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:02,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:02,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:06:02,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058644165] [2024-11-22 04:06:02,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:02,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:06:02,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:02,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:06:02,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:02,677 INFO L87 Difference]: Start difference. First operand 511 states and 758 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 04:06:03,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:03,630 INFO L93 Difference]: Finished difference Result 828 states and 1189 transitions. [2024-11-22 04:06:03,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:06:03,631 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 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 65 [2024-11-22 04:06:03,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:03,636 INFO L225 Difference]: With dead ends: 828 [2024-11-22 04:06:03,637 INFO L226 Difference]: Without dead ends: 651 [2024-11-22 04:06:03,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:06:03,639 INFO L432 NwaCegarLoop]: 415 mSDtfsCounter, 891 mSDsluCounter, 1160 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:03,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 1575 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 04:06:03,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2024-11-22 04:06:03,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 607. [2024-11-22 04:06:03,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 513 states have (on average 1.4834307992202729) internal successors, (761), 522 states have internal predecessors, (761), 61 states have call successors, (61), 29 states have call predecessors, (61), 31 states have return successors, (70), 59 states have call predecessors, (70), 57 states have call successors, (70) [2024-11-22 04:06:03,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 892 transitions. [2024-11-22 04:06:03,706 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 892 transitions. Word has length 65 [2024-11-22 04:06:03,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:03,706 INFO L471 AbstractCegarLoop]: Abstraction has 607 states and 892 transitions. [2024-11-22 04:06:03,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 04:06:03,707 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 892 transitions. [2024-11-22 04:06:03,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-22 04:06:03,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:03,713 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] [2024-11-22 04:06:03,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 04:06:03,715 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:03,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:03,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1010746327, now seen corresponding path program 1 times [2024-11-22 04:06:03,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:03,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624790979] [2024-11-22 04:06:03,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:03,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:03,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:03,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:03,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624790979] [2024-11-22 04:06:03,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624790979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:03,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:03,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:06:03,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118143241] [2024-11-22 04:06:03,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:03,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:06:03,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:03,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:06:03,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:03,829 INFO L87 Difference]: Start difference. First operand 607 states and 892 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 04:06:03,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:03,878 INFO L93 Difference]: Finished difference Result 879 states and 1265 transitions. [2024-11-22 04:06:03,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 04:06:03,879 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 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 65 [2024-11-22 04:06:03,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:03,883 INFO L225 Difference]: With dead ends: 879 [2024-11-22 04:06:03,883 INFO L226 Difference]: Without dead ends: 612 [2024-11-22 04:06:03,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:03,887 INFO L432 NwaCegarLoop]: 623 mSDtfsCounter, 0 mSDsluCounter, 2487 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3110 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:03,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3110 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:06:03,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2024-11-22 04:06:03,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 612. [2024-11-22 04:06:03,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 517 states have (on average 1.4758220502901354) internal successors, (763), 526 states have internal predecessors, (763), 61 states have call successors, (61), 29 states have call predecessors, (61), 32 states have return successors, (71), 60 states have call predecessors, (71), 57 states have call successors, (71) [2024-11-22 04:06:03,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 895 transitions. [2024-11-22 04:06:03,934 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 895 transitions. Word has length 65 [2024-11-22 04:06:03,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:03,935 INFO L471 AbstractCegarLoop]: Abstraction has 612 states and 895 transitions. [2024-11-22 04:06:03,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 04:06:03,935 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 895 transitions. [2024-11-22 04:06:03,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-22 04:06:03,940 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:03,940 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] [2024-11-22 04:06:03,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 04:06:03,941 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:03,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:03,942 INFO L85 PathProgramCache]: Analyzing trace with hash -2040105625, now seen corresponding path program 1 times [2024-11-22 04:06:03,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:03,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307882319] [2024-11-22 04:06:03,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:03,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:04,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:04,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:04,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307882319] [2024-11-22 04:06:04,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307882319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:04,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:04,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:06:04,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336043945] [2024-11-22 04:06:04,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:04,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:06:04,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:04,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:06:04,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:04,038 INFO L87 Difference]: Start difference. First operand 612 states and 895 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 04:06:04,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:04,102 INFO L93 Difference]: Finished difference Result 899 states and 1283 transitions. [2024-11-22 04:06:04,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 04:06:04,103 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 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 65 [2024-11-22 04:06:04,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:04,109 INFO L225 Difference]: With dead ends: 899 [2024-11-22 04:06:04,109 INFO L226 Difference]: Without dead ends: 627 [2024-11-22 04:06:04,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:04,114 INFO L432 NwaCegarLoop]: 623 mSDtfsCounter, 0 mSDsluCounter, 2487 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3110 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:04,115 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3110 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:06:04,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2024-11-22 04:06:04,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 627. [2024-11-22 04:06:04,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 529 states have (on average 1.4650283553875236) internal successors, (775), 538 states have internal predecessors, (775), 61 states have call successors, (61), 29 states have call predecessors, (61), 35 states have return successors, (74), 63 states have call predecessors, (74), 57 states have call successors, (74) [2024-11-22 04:06:04,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 910 transitions. [2024-11-22 04:06:04,154 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 910 transitions. Word has length 65 [2024-11-22 04:06:04,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:04,155 INFO L471 AbstractCegarLoop]: Abstraction has 627 states and 910 transitions. [2024-11-22 04:06:04,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 04:06:04,156 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 910 transitions. [2024-11-22 04:06:04,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-22 04:06:04,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:04,159 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] [2024-11-22 04:06:04,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 04:06:04,159 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:04,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:04,160 INFO L85 PathProgramCache]: Analyzing trace with hash -653902231, now seen corresponding path program 1 times [2024-11-22 04:06:04,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:04,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774493943] [2024-11-22 04:06:04,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:04,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:04,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:04,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:04,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774493943] [2024-11-22 04:06:04,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774493943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:04,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:04,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:06:04,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336319066] [2024-11-22 04:06:04,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:04,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:06:04,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:04,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:06:04,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:04,360 INFO L87 Difference]: Start difference. First operand 627 states and 910 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 04:06:05,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:05,258 INFO L93 Difference]: Finished difference Result 998 states and 1391 transitions. [2024-11-22 04:06:05,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 04:06:05,260 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 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 65 [2024-11-22 04:06:05,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:05,264 INFO L225 Difference]: With dead ends: 998 [2024-11-22 04:06:05,264 INFO L226 Difference]: Without dead ends: 713 [2024-11-22 04:06:05,265 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-22 04:06:05,266 INFO L432 NwaCegarLoop]: 370 mSDtfsCounter, 905 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 1407 SdHoareTripleChecker+Invalid, 1225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:05,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 1407 Invalid, 1225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 04:06:05,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2024-11-22 04:06:05,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 639. [2024-11-22 04:06:05,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 539 states have (on average 1.4564007421150278) internal successors, (785), 548 states have internal predecessors, (785), 62 states have call successors, (62), 30 states have call predecessors, (62), 36 states have return successors, (73), 64 states have call predecessors, (73), 58 states have call successors, (73) [2024-11-22 04:06:05,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 920 transitions. [2024-11-22 04:06:05,311 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 920 transitions. Word has length 65 [2024-11-22 04:06:05,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:05,312 INFO L471 AbstractCegarLoop]: Abstraction has 639 states and 920 transitions. [2024-11-22 04:06:05,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 04:06:05,315 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 920 transitions. [2024-11-22 04:06:05,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-22 04:06:05,317 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:05,317 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] [2024-11-22 04:06:05,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 04:06:05,317 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:05,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:05,318 INFO L85 PathProgramCache]: Analyzing trace with hash -787915737, now seen corresponding path program 1 times [2024-11-22 04:06:05,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:05,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383431990] [2024-11-22 04:06:05,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:05,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:05,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:05,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:05,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383431990] [2024-11-22 04:06:05,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383431990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:05,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:05,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 04:06:05,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362520178] [2024-11-22 04:06:05,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:05,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 04:06:05,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:05,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 04:06:05,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 04:06:05,422 INFO L87 Difference]: Start difference. First operand 639 states and 920 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 04:06:05,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:05,976 INFO L93 Difference]: Finished difference Result 1229 states and 1696 transitions. [2024-11-22 04:06:05,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 04:06:05,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-11-22 04:06:05,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:05,985 INFO L225 Difference]: With dead ends: 1229 [2024-11-22 04:06:05,985 INFO L226 Difference]: Without dead ends: 933 [2024-11-22 04:06:05,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:06:05,988 INFO L432 NwaCegarLoop]: 349 mSDtfsCounter, 864 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:05,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 702 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 04:06:05,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2024-11-22 04:06:06,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 929. [2024-11-22 04:06:06,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 763 states have (on average 1.4049803407601573) internal successors, (1072), 779 states have internal predecessors, (1072), 97 states have call successors, (97), 52 states have call predecessors, (97), 67 states have return successors, (130), 104 states have call predecessors, (130), 93 states have call successors, (130) [2024-11-22 04:06:06,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1299 transitions. [2024-11-22 04:06:06,043 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1299 transitions. Word has length 65 [2024-11-22 04:06:06,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:06,043 INFO L471 AbstractCegarLoop]: Abstraction has 929 states and 1299 transitions. [2024-11-22 04:06:06,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 04:06:06,044 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1299 transitions. [2024-11-22 04:06:06,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-22 04:06:06,046 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:06,046 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] [2024-11-22 04:06:06,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 04:06:06,046 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:06,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:06,047 INFO L85 PathProgramCache]: Analyzing trace with hash 2027130796, now seen corresponding path program 1 times [2024-11-22 04:06:06,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:06,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302363534] [2024-11-22 04:06:06,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:06,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:06,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:06,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:06,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:06,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302363534] [2024-11-22 04:06:06,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302363534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:06,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:06,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:06:06,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367740817] [2024-11-22 04:06:06,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:06,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:06:06,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:06,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:06:06,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:06:06,090 INFO L87 Difference]: Start difference. First operand 929 states and 1299 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 04:06:06,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:06,170 INFO L93 Difference]: Finished difference Result 2040 states and 2758 transitions. [2024-11-22 04:06:06,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:06:06,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 2 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 [2024-11-22 04:06:06,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:06,177 INFO L225 Difference]: With dead ends: 2040 [2024-11-22 04:06:06,177 INFO L226 Difference]: Without dead ends: 1433 [2024-11-22 04:06:06,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:06:06,180 INFO L432 NwaCegarLoop]: 622 mSDtfsCounter, 103 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:06,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 1213 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:06:06,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2024-11-22 04:06:06,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1410. [2024-11-22 04:06:06,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 1142 states have (on average 1.3598949211908933) internal successors, (1553), 1161 states have internal predecessors, (1553), 142 states have call successors, (142), 96 states have call predecessors, (142), 124 states have return successors, (202), 159 states have call predecessors, (202), 138 states have call successors, (202) [2024-11-22 04:06:06,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 1897 transitions. [2024-11-22 04:06:06,267 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 1897 transitions. Word has length 66 [2024-11-22 04:06:06,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:06,267 INFO L471 AbstractCegarLoop]: Abstraction has 1410 states and 1897 transitions. [2024-11-22 04:06:06,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 04:06:06,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 1897 transitions. [2024-11-22 04:06:06,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-22 04:06:06,272 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:06,272 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] [2024-11-22 04:06:06,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 04:06:06,272 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:06,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:06,273 INFO L85 PathProgramCache]: Analyzing trace with hash -809596841, now seen corresponding path program 1 times [2024-11-22 04:06:06,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:06,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607952264] [2024-11-22 04:06:06,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:06,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:06,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:06,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:06,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:06,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607952264] [2024-11-22 04:06:06,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607952264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:06,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:06,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:06:06,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761493487] [2024-11-22 04:06:06,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:06,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:06:06,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:06,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:06:06,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:06:06,306 INFO L87 Difference]: Start difference. First operand 1410 states and 1897 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 04:06:06,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:06,415 INFO L93 Difference]: Finished difference Result 3438 states and 4514 transitions. [2024-11-22 04:06:06,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:06:06,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 2 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 [2024-11-22 04:06:06,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:06,429 INFO L225 Difference]: With dead ends: 3438 [2024-11-22 04:06:06,430 INFO L226 Difference]: Without dead ends: 2370 [2024-11-22 04:06:06,433 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:06:06,434 INFO L432 NwaCegarLoop]: 624 mSDtfsCounter, 595 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:06,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 732 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:06:06,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2370 states. [2024-11-22 04:06:06,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2370 to 2272. [2024-11-22 04:06:06,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2272 states, 1808 states have (on average 1.3163716814159292) internal successors, (2380), 1837 states have internal predecessors, (2380), 240 states have call successors, (240), 180 states have call predecessors, (240), 222 states have return successors, (338), 261 states have call predecessors, (338), 236 states have call successors, (338) [2024-11-22 04:06:06,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2272 states to 2272 states and 2958 transitions. [2024-11-22 04:06:06,598 INFO L78 Accepts]: Start accepts. Automaton has 2272 states and 2958 transitions. Word has length 66 [2024-11-22 04:06:06,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:06,598 INFO L471 AbstractCegarLoop]: Abstraction has 2272 states and 2958 transitions. [2024-11-22 04:06:06,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 04:06:06,599 INFO L276 IsEmpty]: Start isEmpty. Operand 2272 states and 2958 transitions. [2024-11-22 04:06:06,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-22 04:06:06,601 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:06,601 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:06,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 04:06:06,602 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:06,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:06,602 INFO L85 PathProgramCache]: Analyzing trace with hash 165518731, now seen corresponding path program 1 times [2024-11-22 04:06:06,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:06,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998024542] [2024-11-22 04:06:06,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:06,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:06,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:06,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:06,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998024542] [2024-11-22 04:06:06,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998024542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:06,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:06,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:06:06,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164803521] [2024-11-22 04:06:06,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:06,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:06:06,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:06,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:06:06,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:06:06,639 INFO L87 Difference]: Start difference. First operand 2272 states and 2958 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 04:06:06,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:06,834 INFO L93 Difference]: Finished difference Result 4974 states and 6372 transitions. [2024-11-22 04:06:06,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:06:06,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 2 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 72 [2024-11-22 04:06:06,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:06,850 INFO L225 Difference]: With dead ends: 4974 [2024-11-22 04:06:06,851 INFO L226 Difference]: Without dead ends: 3044 [2024-11-22 04:06:06,856 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:06:06,857 INFO L432 NwaCegarLoop]: 639 mSDtfsCounter, 595 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:06,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 747 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:06:06,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3044 states. [2024-11-22 04:06:07,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3044 to 3004. [2024-11-22 04:06:07,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3004 states, 2376 states have (on average 1.297979797979798) internal successors, (3084), 2413 states have internal predecessors, (3084), 320 states have call successors, (320), 250 states have call predecessors, (320), 306 states have return successors, (447), 347 states have call predecessors, (447), 316 states have call successors, (447) [2024-11-22 04:06:07,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3004 states to 3004 states and 3851 transitions. [2024-11-22 04:06:07,035 INFO L78 Accepts]: Start accepts. Automaton has 3004 states and 3851 transitions. Word has length 72 [2024-11-22 04:06:07,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:07,036 INFO L471 AbstractCegarLoop]: Abstraction has 3004 states and 3851 transitions. [2024-11-22 04:06:07,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 04:06:07,036 INFO L276 IsEmpty]: Start isEmpty. Operand 3004 states and 3851 transitions. [2024-11-22 04:06:07,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-22 04:06:07,038 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:07,038 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, 1, 1, 1, 1, 1] [2024-11-22 04:06:07,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 04:06:07,039 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:07,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:07,039 INFO L85 PathProgramCache]: Analyzing trace with hash 319366341, now seen corresponding path program 1 times [2024-11-22 04:06:07,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:07,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779575603] [2024-11-22 04:06:07,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:07,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:07,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:07,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:07,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779575603] [2024-11-22 04:06:07,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779575603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:07,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:07,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 04:06:07,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512500941] [2024-11-22 04:06:07,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:07,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 04:06:07,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:07,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 04:06:07,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 04:06:07,132 INFO L87 Difference]: Start difference. First operand 3004 states and 3851 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 04:06:07,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:07,561 INFO L93 Difference]: Finished difference Result 3535 states and 4506 transitions. [2024-11-22 04:06:07,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:06:07,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 2 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 73 [2024-11-22 04:06:07,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:07,585 INFO L225 Difference]: With dead ends: 3535 [2024-11-22 04:06:07,586 INFO L226 Difference]: Without dead ends: 3532 [2024-11-22 04:06:07,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:06:07,589 INFO L432 NwaCegarLoop]: 636 mSDtfsCounter, 1167 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:07,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1167 Valid, 726 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 04:06:07,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3532 states. [2024-11-22 04:06:07,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3532 to 3498. [2024-11-22 04:06:07,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3498 states, 2761 states have (on average 1.2879391524809851) internal successors, (3556), 2803 states have internal predecessors, (3556), 370 states have call successors, (370), 294 states have call predecessors, (370), 365 states have return successors, (526), 407 states have call predecessors, (526), 367 states have call successors, (526) [2024-11-22 04:06:07,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3498 states to 3498 states and 4452 transitions. [2024-11-22 04:06:07,864 INFO L78 Accepts]: Start accepts. Automaton has 3498 states and 4452 transitions. Word has length 73 [2024-11-22 04:06:07,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:07,865 INFO L471 AbstractCegarLoop]: Abstraction has 3498 states and 4452 transitions. [2024-11-22 04:06:07,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 04:06:07,865 INFO L276 IsEmpty]: Start isEmpty. Operand 3498 states and 4452 transitions. [2024-11-22 04:06:07,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-22 04:06:07,867 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:07,867 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, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:07,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 04:06:07,867 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:07,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:07,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1309170965, now seen corresponding path program 1 times [2024-11-22 04:06:07,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:07,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190081860] [2024-11-22 04:06:07,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:07,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:07,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:07,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:07,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190081860] [2024-11-22 04:06:07,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190081860] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 04:06:07,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494312688] [2024-11-22 04:06:07,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:07,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 04:06:07,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 04:06:07,993 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 04:06:07,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 04:06:08,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:08,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 04:06:08,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 04:06:08,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:08,465 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 04:06:08,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:08,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494312688] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 04:06:08,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 04:06:08,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2024-11-22 04:06:08,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644823081] [2024-11-22 04:06:08,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 04:06:08,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 04:06:08,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:08,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 04:06:08,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 04:06:08,573 INFO L87 Difference]: Start difference. First operand 3498 states and 4452 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 04:06:09,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:09,346 INFO L93 Difference]: Finished difference Result 7379 states and 9306 transitions. [2024-11-22 04:06:09,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 04:06:09,346 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 4 states have call successors, (20), 3 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 74 [2024-11-22 04:06:09,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:09,386 INFO L225 Difference]: With dead ends: 7379 [2024-11-22 04:06:09,386 INFO L226 Difference]: Without dead ends: 7376 [2024-11-22 04:06:09,392 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 04:06:09,392 INFO L432 NwaCegarLoop]: 816 mSDtfsCounter, 934 mSDsluCounter, 2269 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 3085 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:09,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 3085 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 04:06:09,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7376 states. [2024-11-22 04:06:09,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7376 to 5288. [2024-11-22 04:06:09,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5288 states, 4165 states have (on average 1.2801920768307322) internal successors, (5332), 4229 states have internal predecessors, (5332), 554 states have call successors, (554), 452 states have call predecessors, (554), 567 states have return successors, (804), 613 states have call predecessors, (804), 551 states have call successors, (804) [2024-11-22 04:06:09,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5288 states to 5288 states and 6690 transitions. [2024-11-22 04:06:09,954 INFO L78 Accepts]: Start accepts. Automaton has 5288 states and 6690 transitions. Word has length 74 [2024-11-22 04:06:09,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:09,954 INFO L471 AbstractCegarLoop]: Abstraction has 5288 states and 6690 transitions. [2024-11-22 04:06:09,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 04:06:09,955 INFO L276 IsEmpty]: Start isEmpty. Operand 5288 states and 6690 transitions. [2024-11-22 04:06:09,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-22 04:06:09,957 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:09,957 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, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:09,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 04:06:10,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-22 04:06:10,160 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:10,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:10,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1768616773, now seen corresponding path program 2 times [2024-11-22 04:06:10,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:10,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143891660] [2024-11-22 04:06:10,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 04:06:10,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:10,179 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 04:06:10,180 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 04:06:10,202 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:10,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:10,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143891660] [2024-11-22 04:06:10,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143891660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:10,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:10,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:06:10,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805008953] [2024-11-22 04:06:10,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:10,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:06:10,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:10,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:06:10,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:06:10,205 INFO L87 Difference]: Start difference. First operand 5288 states and 6690 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 04:06:10,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:10,451 INFO L93 Difference]: Finished difference Result 7755 states and 9819 transitions. [2024-11-22 04:06:10,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:06:10,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 2 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 77 [2024-11-22 04:06:10,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:10,475 INFO L225 Difference]: With dead ends: 7755 [2024-11-22 04:06:10,476 INFO L226 Difference]: Without dead ends: 3680 [2024-11-22 04:06:10,487 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:06:10,488 INFO L432 NwaCegarLoop]: 710 mSDtfsCounter, 594 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:10,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 827 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:06:10,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3680 states. [2024-11-22 04:06:10,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3680 to 3660. [2024-11-22 04:06:10,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3660 states, 2893 states have (on average 1.2692706533010716) internal successors, (3672), 2935 states have internal predecessors, (3672), 386 states have call successors, (386), 308 states have call predecessors, (386), 379 states have return successors, (530), 423 states have call predecessors, (530), 383 states have call successors, (530) [2024-11-22 04:06:10,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3660 states to 3660 states and 4588 transitions. [2024-11-22 04:06:10,813 INFO L78 Accepts]: Start accepts. Automaton has 3660 states and 4588 transitions. Word has length 77 [2024-11-22 04:06:10,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:10,814 INFO L471 AbstractCegarLoop]: Abstraction has 3660 states and 4588 transitions. [2024-11-22 04:06:10,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 04:06:10,814 INFO L276 IsEmpty]: Start isEmpty. Operand 3660 states and 4588 transitions. [2024-11-22 04:06:10,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-22 04:06:10,817 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:10,817 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:10,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 04:06:10,817 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:10,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:10,818 INFO L85 PathProgramCache]: Analyzing trace with hash 651365895, now seen corresponding path program 1 times [2024-11-22 04:06:10,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:10,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31140435] [2024-11-22 04:06:10,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:10,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:10,945 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 04:06:10,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:10,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31140435] [2024-11-22 04:06:10,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31140435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:10,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:10,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:06:10,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852870224] [2024-11-22 04:06:10,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:10,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:06:10,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:10,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:06:10,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:10,948 INFO L87 Difference]: Start difference. First operand 3660 states and 4588 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-22 04:06:12,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:12,685 INFO L93 Difference]: Finished difference Result 10512 states and 12985 transitions. [2024-11-22 04:06:12,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 04:06:12,686 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 3 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 84 [2024-11-22 04:06:12,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:12,722 INFO L225 Difference]: With dead ends: 10512 [2024-11-22 04:06:12,722 INFO L226 Difference]: Without dead ends: 5889 [2024-11-22 04:06:12,737 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-22 04:06:12,738 INFO L432 NwaCegarLoop]: 419 mSDtfsCounter, 708 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 1336 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:12,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 1816 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1336 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-22 04:06:12,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5889 states. [2024-11-22 04:06:13,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5889 to 5632. [2024-11-22 04:06:13,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5632 states, 4413 states have (on average 1.238613188307274) internal successors, (5466), 4491 states have internal predecessors, (5466), 595 states have call successors, (595), 490 states have call predecessors, (595), 622 states have return successors, (886), 657 states have call predecessors, (886), 592 states have call successors, (886) [2024-11-22 04:06:13,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5632 states to 5632 states and 6947 transitions. [2024-11-22 04:06:13,351 INFO L78 Accepts]: Start accepts. Automaton has 5632 states and 6947 transitions. Word has length 84 [2024-11-22 04:06:13,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:13,352 INFO L471 AbstractCegarLoop]: Abstraction has 5632 states and 6947 transitions. [2024-11-22 04:06:13,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-22 04:06:13,352 INFO L276 IsEmpty]: Start isEmpty. Operand 5632 states and 6947 transitions. [2024-11-22 04:06:13,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-22 04:06:13,358 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:13,358 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2024-11-22 04:06:13,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 04:06:13,360 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:13,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:13,361 INFO L85 PathProgramCache]: Analyzing trace with hash 940680323, now seen corresponding path program 1 times [2024-11-22 04:06:13,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:13,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394760729] [2024-11-22 04:06:13,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:13,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:13,502 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 04:06:13,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:13,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394760729] [2024-11-22 04:06:13,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394760729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:13,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:13,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 04:06:13,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676312564] [2024-11-22 04:06:13,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:13,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 04:06:13,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:13,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 04:06:13,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 04:06:13,505 INFO L87 Difference]: Start difference. First operand 5632 states and 6947 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-22 04:06:14,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:14,956 INFO L93 Difference]: Finished difference Result 9656 states and 11830 transitions. [2024-11-22 04:06:14,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 04:06:14,958 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2024-11-22 04:06:14,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:15,003 INFO L225 Difference]: With dead ends: 9656 [2024-11-22 04:06:15,003 INFO L226 Difference]: Without dead ends: 5012 [2024-11-22 04:06:15,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2024-11-22 04:06:15,017 INFO L432 NwaCegarLoop]: 432 mSDtfsCounter, 1507 mSDsluCounter, 1460 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 1732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:15,018 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 1892 Invalid, 1732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 1482 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-22 04:06:15,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5012 states. [2024-11-22 04:06:15,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5012 to 4731. [2024-11-22 04:06:15,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4731 states, 3718 states have (on average 1.2329209252286175) internal successors, (4584), 3779 states have internal predecessors, (4584), 499 states have call successors, (499), 405 states have call predecessors, (499), 512 states have return successors, (674), 553 states have call predecessors, (674), 496 states have call successors, (674) [2024-11-22 04:06:15,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4731 states to 4731 states and 5757 transitions. [2024-11-22 04:06:15,482 INFO L78 Accepts]: Start accepts. Automaton has 4731 states and 5757 transitions. Word has length 93 [2024-11-22 04:06:15,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:15,483 INFO L471 AbstractCegarLoop]: Abstraction has 4731 states and 5757 transitions. [2024-11-22 04:06:15,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-22 04:06:15,483 INFO L276 IsEmpty]: Start isEmpty. Operand 4731 states and 5757 transitions. [2024-11-22 04:06:15,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-22 04:06:15,491 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:15,491 INFO L215 NwaCegarLoop]: trace histogram [4, 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, 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] [2024-11-22 04:06:15,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 04:06:15,491 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:15,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:15,492 INFO L85 PathProgramCache]: Analyzing trace with hash 663499349, now seen corresponding path program 1 times [2024-11-22 04:06:15,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:15,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780729375] [2024-11-22 04:06:15,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:15,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:15,646 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-22 04:06:15,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:15,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780729375] [2024-11-22 04:06:15,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780729375] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 04:06:15,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732871340] [2024-11-22 04:06:15,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:15,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 04:06:15,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 04:06:15,650 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 04:06:15,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 04:06:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:15,794 INFO L255 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-22 04:06:15,799 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 04:06:15,857 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-22 04:06:15,858 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 04:06:15,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732871340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:15,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 04:06:15,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2024-11-22 04:06:15,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770383287] [2024-11-22 04:06:15,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:15,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:06:15,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:15,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:06:15,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-22 04:06:15,862 INFO L87 Difference]: Start difference. First operand 4731 states and 5757 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 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) [2024-11-22 04:06:16,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:16,097 INFO L93 Difference]: Finished difference Result 6780 states and 8210 transitions. [2024-11-22 04:06:16,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 04:06:16,097 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 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 145 [2024-11-22 04:06:16,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:16,111 INFO L225 Difference]: With dead ends: 6780 [2024-11-22 04:06:16,112 INFO L226 Difference]: Without dead ends: 2395 [2024-11-22 04:06:16,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-22 04:06:16,123 INFO L432 NwaCegarLoop]: 620 mSDtfsCounter, 0 mSDsluCounter, 2471 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3091 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:16,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3091 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:06:16,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2395 states. [2024-11-22 04:06:16,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2395 to 2395. [2024-11-22 04:06:16,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2395 states, 1961 states have (on average 1.2483426823049464) internal successors, (2448), 1977 states have internal predecessors, (2448), 215 states have call successors, (215), 163 states have call predecessors, (215), 217 states have return successors, (295), 255 states have call predecessors, (295), 212 states have call successors, (295) [2024-11-22 04:06:16,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2395 states to 2395 states and 2958 transitions. [2024-11-22 04:06:16,287 INFO L78 Accepts]: Start accepts. Automaton has 2395 states and 2958 transitions. Word has length 145 [2024-11-22 04:06:16,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:16,288 INFO L471 AbstractCegarLoop]: Abstraction has 2395 states and 2958 transitions. [2024-11-22 04:06:16,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 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) [2024-11-22 04:06:16,289 INFO L276 IsEmpty]: Start isEmpty. Operand 2395 states and 2958 transitions. [2024-11-22 04:06:16,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-22 04:06:16,294 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:16,295 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:16,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 04:06:16,495 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,SelfDestructingSolverStorable14 [2024-11-22 04:06:16,496 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:16,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:16,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1655801647, now seen corresponding path program 1 times [2024-11-22 04:06:16,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:16,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444425420] [2024-11-22 04:06:16,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:16,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:16,542 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-22 04:06:16,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:16,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444425420] [2024-11-22 04:06:16,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444425420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:16,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:16,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:06:16,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662455448] [2024-11-22 04:06:16,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:16,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:06:16,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:16,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:06:16,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:06:16,545 INFO L87 Difference]: Start difference. First operand 2395 states and 2958 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-22 04:06:16,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:16,664 INFO L93 Difference]: Finished difference Result 2398 states and 2960 transitions. [2024-11-22 04:06:16,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:06:16,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 147 [2024-11-22 04:06:16,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:16,675 INFO L225 Difference]: With dead ends: 2398 [2024-11-22 04:06:16,676 INFO L226 Difference]: Without dead ends: 1951 [2024-11-22 04:06:16,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:06:16,678 INFO L432 NwaCegarLoop]: 621 mSDtfsCounter, 123 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:16,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 1115 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:06:16,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1951 states. [2024-11-22 04:06:16,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1951 to 1951. [2024-11-22 04:06:16,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1951 states, 1613 states have (on average 1.2647241165530068) internal successors, (2040), 1626 states have internal predecessors, (2040), 169 states have call successors, (169), 123 states have call predecessors, (169), 167 states have return successors, (232), 202 states have call predecessors, (232), 166 states have call successors, (232) [2024-11-22 04:06:16,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1951 states to 1951 states and 2441 transitions. [2024-11-22 04:06:16,831 INFO L78 Accepts]: Start accepts. Automaton has 1951 states and 2441 transitions. Word has length 147 [2024-11-22 04:06:16,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:16,831 INFO L471 AbstractCegarLoop]: Abstraction has 1951 states and 2441 transitions. [2024-11-22 04:06:16,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-22 04:06:16,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1951 states and 2441 transitions. [2024-11-22 04:06:16,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-22 04:06:16,836 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:16,837 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:16,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 04:06:16,837 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:16,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:16,838 INFO L85 PathProgramCache]: Analyzing trace with hash -848431324, now seen corresponding path program 1 times [2024-11-22 04:06:16,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:16,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093107649] [2024-11-22 04:06:16,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:16,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:16,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:16,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:16,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093107649] [2024-11-22 04:06:16,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093107649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:16,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:16,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:06:16,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641842292] [2024-11-22 04:06:16,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:16,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:06:16,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:16,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:06:16,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:06:16,898 INFO L87 Difference]: Start difference. First operand 1951 states and 2441 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:17,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:17,083 INFO L93 Difference]: Finished difference Result 2262 states and 2923 transitions. [2024-11-22 04:06:17,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:06:17,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 2 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 146 [2024-11-22 04:06:17,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:17,095 INFO L225 Difference]: With dead ends: 2262 [2024-11-22 04:06:17,095 INFO L226 Difference]: Without dead ends: 1951 [2024-11-22 04:06:17,097 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:06:17,098 INFO L432 NwaCegarLoop]: 620 mSDtfsCounter, 486 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:17,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 748 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:06:17,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1951 states. [2024-11-22 04:06:17,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1951 to 1951. [2024-11-22 04:06:17,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1951 states, 1613 states have (on average 1.264104153750775) internal successors, (2039), 1626 states have internal predecessors, (2039), 169 states have call successors, (169), 123 states have call predecessors, (169), 167 states have return successors, (232), 202 states have call predecessors, (232), 166 states have call successors, (232) [2024-11-22 04:06:17,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1951 states to 1951 states and 2440 transitions. [2024-11-22 04:06:17,314 INFO L78 Accepts]: Start accepts. Automaton has 1951 states and 2440 transitions. Word has length 146 [2024-11-22 04:06:17,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:17,315 INFO L471 AbstractCegarLoop]: Abstraction has 1951 states and 2440 transitions. [2024-11-22 04:06:17,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:17,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1951 states and 2440 transitions. [2024-11-22 04:06:17,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-22 04:06:17,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:17,320 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:17,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 04:06:17,321 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:17,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:17,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1266320026, now seen corresponding path program 1 times [2024-11-22 04:06:17,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:17,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185811592] [2024-11-22 04:06:17,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:17,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:17,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:17,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:17,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185811592] [2024-11-22 04:06:17,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185811592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:17,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:17,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:06:17,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403773465] [2024-11-22 04:06:17,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:17,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:06:17,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:17,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:06:17,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:06:17,452 INFO L87 Difference]: Start difference. First operand 1951 states and 2440 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:18,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:18,333 INFO L93 Difference]: Finished difference Result 2591 states and 3444 transitions. [2024-11-22 04:06:18,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 04:06:18,333 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2024-11-22 04:06:18,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:18,346 INFO L225 Difference]: With dead ends: 2591 [2024-11-22 04:06:18,346 INFO L226 Difference]: Without dead ends: 2289 [2024-11-22 04:06:18,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:18,350 INFO L432 NwaCegarLoop]: 449 mSDtfsCounter, 1084 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:18,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1111 Valid, 1538 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 04:06:18,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2024-11-22 04:06:18,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 2264. [2024-11-22 04:06:18,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2264 states, 1901 states have (on average 1.3108890057864282) internal successors, (2492), 1915 states have internal predecessors, (2492), 187 states have call successors, (187), 129 states have call predecessors, (187), 174 states have return successors, (251), 220 states have call predecessors, (251), 184 states have call successors, (251) [2024-11-22 04:06:18,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2264 states to 2264 states and 2930 transitions. [2024-11-22 04:06:18,602 INFO L78 Accepts]: Start accepts. Automaton has 2264 states and 2930 transitions. Word has length 146 [2024-11-22 04:06:18,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:18,602 INFO L471 AbstractCegarLoop]: Abstraction has 2264 states and 2930 transitions. [2024-11-22 04:06:18,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:18,603 INFO L276 IsEmpty]: Start isEmpty. Operand 2264 states and 2930 transitions. [2024-11-22 04:06:18,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-22 04:06:18,608 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:18,608 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:18,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 04:06:18,608 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:18,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:18,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1227181666, now seen corresponding path program 1 times [2024-11-22 04:06:18,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:18,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783612093] [2024-11-22 04:06:18,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:18,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:18,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:18,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:18,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783612093] [2024-11-22 04:06:18,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783612093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:18,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:18,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:06:18,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792599916] [2024-11-22 04:06:18,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:18,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:06:18,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:18,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:06:18,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:18,765 INFO L87 Difference]: Start difference. First operand 2264 states and 2930 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:19,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:19,867 INFO L93 Difference]: Finished difference Result 3276 states and 4533 transitions. [2024-11-22 04:06:19,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:06:19,867 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2024-11-22 04:06:19,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:19,878 INFO L225 Difference]: With dead ends: 3276 [2024-11-22 04:06:19,878 INFO L226 Difference]: Without dead ends: 2661 [2024-11-22 04:06:19,880 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:06:19,881 INFO L432 NwaCegarLoop]: 718 mSDtfsCounter, 1087 mSDsluCounter, 2159 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:19,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1114 Valid, 2877 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 04:06:19,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2661 states. [2024-11-22 04:06:20,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2661 to 2556. [2024-11-22 04:06:20,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2556 states, 2168 states have (on average 1.3390221402214022) internal successors, (2903), 2183 states have internal predecessors, (2903), 205 states have call successors, (205), 135 states have call predecessors, (205), 181 states have return successors, (272), 239 states have call predecessors, (272), 202 states have call successors, (272) [2024-11-22 04:06:20,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2556 states to 2556 states and 3380 transitions. [2024-11-22 04:06:20,070 INFO L78 Accepts]: Start accepts. Automaton has 2556 states and 3380 transitions. Word has length 146 [2024-11-22 04:06:20,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:20,071 INFO L471 AbstractCegarLoop]: Abstraction has 2556 states and 3380 transitions. [2024-11-22 04:06:20,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:20,071 INFO L276 IsEmpty]: Start isEmpty. Operand 2556 states and 3380 transitions. [2024-11-22 04:06:20,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-22 04:06:20,076 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:20,076 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:20,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 04:06:20,077 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:20,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:20,078 INFO L85 PathProgramCache]: Analyzing trace with hash 520585060, now seen corresponding path program 1 times [2024-11-22 04:06:20,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:20,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143427433] [2024-11-22 04:06:20,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:20,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:20,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:20,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:20,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143427433] [2024-11-22 04:06:20,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143427433] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:20,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:20,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:06:20,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190743487] [2024-11-22 04:06:20,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:20,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:06:20,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:20,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:06:20,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:20,204 INFO L87 Difference]: Start difference. First operand 2556 states and 3380 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:21,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:21,155 INFO L93 Difference]: Finished difference Result 4204 states and 5986 transitions. [2024-11-22 04:06:21,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:06:21,156 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2024-11-22 04:06:21,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:21,170 INFO L225 Difference]: With dead ends: 4204 [2024-11-22 04:06:21,170 INFO L226 Difference]: Without dead ends: 3297 [2024-11-22 04:06:21,174 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:06:21,176 INFO L432 NwaCegarLoop]: 479 mSDtfsCounter, 1109 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1136 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:21,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1136 Valid, 2062 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 04:06:21,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3297 states. [2024-11-22 04:06:21,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3297 to 3177. [2024-11-22 04:06:21,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3177 states, 2737 states have (on average 1.3854585312385823) internal successors, (3792), 2756 states have internal predecessors, (3792), 241 states have call successors, (241), 147 states have call predecessors, (241), 197 states have return successors, (320), 277 states have call predecessors, (320), 238 states have call successors, (320) [2024-11-22 04:06:21,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3177 states to 3177 states and 4353 transitions. [2024-11-22 04:06:21,390 INFO L78 Accepts]: Start accepts. Automaton has 3177 states and 4353 transitions. Word has length 146 [2024-11-22 04:06:21,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:21,391 INFO L471 AbstractCegarLoop]: Abstraction has 3177 states and 4353 transitions. [2024-11-22 04:06:21,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:21,391 INFO L276 IsEmpty]: Start isEmpty. Operand 3177 states and 4353 transitions. [2024-11-22 04:06:21,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-22 04:06:21,396 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:21,396 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:21,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-22 04:06:21,397 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:21,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:21,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1467622946, now seen corresponding path program 1 times [2024-11-22 04:06:21,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:21,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996626529] [2024-11-22 04:06:21,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:21,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:21,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:21,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:21,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996626529] [2024-11-22 04:06:21,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996626529] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:21,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:21,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:06:21,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721349545] [2024-11-22 04:06:21,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:21,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:06:21,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:21,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:06:21,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:21,532 INFO L87 Difference]: Start difference. First operand 3177 states and 4353 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:22,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:22,632 INFO L93 Difference]: Finished difference Result 6203 states and 9181 transitions. [2024-11-22 04:06:22,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:06:22,633 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2024-11-22 04:06:22,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:22,653 INFO L225 Difference]: With dead ends: 6203 [2024-11-22 04:06:22,654 INFO L226 Difference]: Without dead ends: 4675 [2024-11-22 04:06:22,661 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:06:22,661 INFO L432 NwaCegarLoop]: 711 mSDtfsCounter, 1077 mSDsluCounter, 2138 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 2849 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:22,662 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1104 Valid, 2849 Invalid, 1176 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 04:06:22,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4675 states. [2024-11-22 04:06:22,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4675 to 4524. [2024-11-22 04:06:22,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4524 states, 3974 states have (on average 1.4494212380473075) internal successors, (5760), 4007 states have internal predecessors, (5760), 313 states have call successors, (313), 171 states have call predecessors, (313), 235 states have return successors, (440), 353 states have call predecessors, (440), 310 states have call successors, (440) [2024-11-22 04:06:22,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4524 states to 4524 states and 6513 transitions. [2024-11-22 04:06:22,952 INFO L78 Accepts]: Start accepts. Automaton has 4524 states and 6513 transitions. Word has length 146 [2024-11-22 04:06:22,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:22,953 INFO L471 AbstractCegarLoop]: Abstraction has 4524 states and 6513 transitions. [2024-11-22 04:06:22,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:22,954 INFO L276 IsEmpty]: Start isEmpty. Operand 4524 states and 6513 transitions. [2024-11-22 04:06:22,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-22 04:06:22,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:22,960 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:22,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-22 04:06:22,960 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:22,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:22,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1965510748, now seen corresponding path program 1 times [2024-11-22 04:06:22,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:22,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121078196] [2024-11-22 04:06:22,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:22,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:23,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:23,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:23,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121078196] [2024-11-22 04:06:23,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121078196] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:23,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:23,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:06:23,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146597040] [2024-11-22 04:06:23,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:23,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:06:23,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:23,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:06:23,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:23,115 INFO L87 Difference]: Start difference. First operand 4524 states and 6513 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:24,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:24,332 INFO L93 Difference]: Finished difference Result 10602 states and 16415 transitions. [2024-11-22 04:06:24,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:06:24,335 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2024-11-22 04:06:24,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:24,366 INFO L225 Difference]: With dead ends: 10602 [2024-11-22 04:06:24,367 INFO L226 Difference]: Without dead ends: 7727 [2024-11-22 04:06:24,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:06:24,381 INFO L432 NwaCegarLoop]: 708 mSDtfsCounter, 1072 mSDsluCounter, 2129 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 2837 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:24,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1099 Valid, 2837 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 04:06:24,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7727 states. [2024-11-22 04:06:24,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7727 to 7515. [2024-11-22 04:06:24,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7515 states, 6727 states have (on average 1.5210346365393193) internal successors, (10232), 6806 states have internal predecessors, (10232), 457 states have call successors, (457), 219 states have call predecessors, (457), 329 states have return successors, (776), 505 states have call predecessors, (776), 454 states have call successors, (776) [2024-11-22 04:06:24,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7515 states to 7515 states and 11465 transitions. [2024-11-22 04:06:24,825 INFO L78 Accepts]: Start accepts. Automaton has 7515 states and 11465 transitions. Word has length 146 [2024-11-22 04:06:24,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:24,826 INFO L471 AbstractCegarLoop]: Abstraction has 7515 states and 11465 transitions. [2024-11-22 04:06:24,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:24,827 INFO L276 IsEmpty]: Start isEmpty. Operand 7515 states and 11465 transitions. [2024-11-22 04:06:24,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-22 04:06:24,834 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:24,834 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:24,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-22 04:06:24,835 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:24,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:24,835 INFO L85 PathProgramCache]: Analyzing trace with hash 279047650, now seen corresponding path program 1 times [2024-11-22 04:06:24,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:24,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94416218] [2024-11-22 04:06:24,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:24,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:24,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:24,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:24,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94416218] [2024-11-22 04:06:24,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94416218] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:24,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:24,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:06:24,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256271535] [2024-11-22 04:06:24,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:24,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:06:24,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:24,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:06:24,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:06:24,993 INFO L87 Difference]: Start difference. First operand 7515 states and 11465 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:26,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:26,038 INFO L93 Difference]: Finished difference Result 14709 states and 23654 transitions. [2024-11-22 04:06:26,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:06:26,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2024-11-22 04:06:26,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:26,079 INFO L225 Difference]: With dead ends: 14709 [2024-11-22 04:06:26,079 INFO L226 Difference]: Without dead ends: 8843 [2024-11-22 04:06:26,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:26,102 INFO L432 NwaCegarLoop]: 430 mSDtfsCounter, 819 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:26,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 1139 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 04:06:26,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8843 states. [2024-11-22 04:06:26,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8843 to 7515. [2024-11-22 04:06:26,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7515 states, 6727 states have (on average 1.5185075070610972) internal successors, (10215), 6806 states have internal predecessors, (10215), 457 states have call successors, (457), 219 states have call predecessors, (457), 329 states have return successors, (776), 505 states have call predecessors, (776), 454 states have call successors, (776) [2024-11-22 04:06:26,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7515 states to 7515 states and 11448 transitions. [2024-11-22 04:06:26,702 INFO L78 Accepts]: Start accepts. Automaton has 7515 states and 11448 transitions. Word has length 146 [2024-11-22 04:06:26,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:26,703 INFO L471 AbstractCegarLoop]: Abstraction has 7515 states and 11448 transitions. [2024-11-22 04:06:26,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:26,703 INFO L276 IsEmpty]: Start isEmpty. Operand 7515 states and 11448 transitions. [2024-11-22 04:06:26,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-22 04:06:26,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:26,711 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:26,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-22 04:06:26,711 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:26,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:26,712 INFO L85 PathProgramCache]: Analyzing trace with hash 767094756, now seen corresponding path program 1 times [2024-11-22 04:06:26,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:26,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959718322] [2024-11-22 04:06:26,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:26,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:26,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:26,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:26,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959718322] [2024-11-22 04:06:26,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959718322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:26,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:26,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:06:26,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653909361] [2024-11-22 04:06:26,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:26,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:06:26,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:26,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:06:26,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:06:26,839 INFO L87 Difference]: Start difference. First operand 7515 states and 11448 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:27,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:27,685 INFO L93 Difference]: Finished difference Result 14626 states and 23454 transitions. [2024-11-22 04:06:27,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:06:27,686 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2024-11-22 04:06:27,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:27,723 INFO L225 Difference]: With dead ends: 14626 [2024-11-22 04:06:27,724 INFO L226 Difference]: Without dead ends: 8760 [2024-11-22 04:06:27,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:27,745 INFO L432 NwaCegarLoop]: 427 mSDtfsCounter, 816 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:27,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 1131 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 04:06:27,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8760 states. [2024-11-22 04:06:28,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8760 to 7515. [2024-11-22 04:06:28,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7515 states, 6727 states have (on average 1.515980377582875) internal successors, (10198), 6806 states have internal predecessors, (10198), 457 states have call successors, (457), 219 states have call predecessors, (457), 329 states have return successors, (776), 505 states have call predecessors, (776), 454 states have call successors, (776) [2024-11-22 04:06:28,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7515 states to 7515 states and 11431 transitions. [2024-11-22 04:06:28,244 INFO L78 Accepts]: Start accepts. Automaton has 7515 states and 11431 transitions. Word has length 146 [2024-11-22 04:06:28,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:28,244 INFO L471 AbstractCegarLoop]: Abstraction has 7515 states and 11431 transitions. [2024-11-22 04:06:28,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:28,245 INFO L276 IsEmpty]: Start isEmpty. Operand 7515 states and 11431 transitions. [2024-11-22 04:06:28,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-22 04:06:28,252 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:28,252 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:28,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-22 04:06:28,253 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:28,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:28,253 INFO L85 PathProgramCache]: Analyzing trace with hash -325540446, now seen corresponding path program 1 times [2024-11-22 04:06:28,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:28,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928221744] [2024-11-22 04:06:28,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:28,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:28,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:28,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:28,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928221744] [2024-11-22 04:06:28,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928221744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:28,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:28,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:06:28,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160137023] [2024-11-22 04:06:28,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:28,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:06:28,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:28,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:06:28,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:28,403 INFO L87 Difference]: Start difference. First operand 7515 states and 11431 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:29,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:29,679 INFO L93 Difference]: Finished difference Result 20229 states and 32691 transitions. [2024-11-22 04:06:29,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:06:29,680 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2024-11-22 04:06:29,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:29,739 INFO L225 Difference]: With dead ends: 20229 [2024-11-22 04:06:29,740 INFO L226 Difference]: Without dead ends: 14363 [2024-11-22 04:06:29,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:06:29,762 INFO L432 NwaCegarLoop]: 691 mSDtfsCounter, 1048 mSDsluCounter, 2082 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 2773 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:29,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 2773 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 04:06:29,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14363 states. [2024-11-22 04:06:30,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14363 to 14091. [2024-11-22 04:06:30,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14091 states, 12773 states have (on average 1.575824003757927) internal successors, (20128), 12998 states have internal predecessors, (20128), 745 states have call successors, (745), 315 states have call predecessors, (745), 571 states have return successors, (1832), 809 states have call predecessors, (1832), 742 states have call successors, (1832) [2024-11-22 04:06:30,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14091 states to 14091 states and 22705 transitions. [2024-11-22 04:06:30,577 INFO L78 Accepts]: Start accepts. Automaton has 14091 states and 22705 transitions. Word has length 146 [2024-11-22 04:06:30,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:30,578 INFO L471 AbstractCegarLoop]: Abstraction has 14091 states and 22705 transitions. [2024-11-22 04:06:30,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:30,578 INFO L276 IsEmpty]: Start isEmpty. Operand 14091 states and 22705 transitions. [2024-11-22 04:06:30,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-22 04:06:30,648 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:30,648 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:30,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-22 04:06:30,648 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:30,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:30,649 INFO L85 PathProgramCache]: Analyzing trace with hash 2126951136, now seen corresponding path program 1 times [2024-11-22 04:06:30,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:30,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444579388] [2024-11-22 04:06:30,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:30,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:30,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:30,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:30,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444579388] [2024-11-22 04:06:30,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444579388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:30,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:30,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:06:30,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174118831] [2024-11-22 04:06:30,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:30,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:06:30,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:30,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:06:30,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:06:30,749 INFO L87 Difference]: Start difference. First operand 14091 states and 22705 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:31,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:31,683 INFO L93 Difference]: Finished difference Result 29473 states and 49672 transitions. [2024-11-22 04:06:31,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:06:31,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2024-11-22 04:06:31,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:31,759 INFO L225 Difference]: With dead ends: 29473 [2024-11-22 04:06:31,759 INFO L226 Difference]: Without dead ends: 17031 [2024-11-22 04:06:31,797 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:31,798 INFO L432 NwaCegarLoop]: 420 mSDtfsCounter, 811 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:31,798 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 1111 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 04:06:31,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17031 states. [2024-11-22 04:06:32,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17031 to 14091. [2024-11-22 04:06:33,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14091 states, 12773 states have (on average 1.573240429029985) internal successors, (20095), 12998 states have internal predecessors, (20095), 745 states have call successors, (745), 315 states have call predecessors, (745), 571 states have return successors, (1832), 809 states have call predecessors, (1832), 742 states have call successors, (1832) [2024-11-22 04:06:33,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14091 states to 14091 states and 22672 transitions. [2024-11-22 04:06:33,055 INFO L78 Accepts]: Start accepts. Automaton has 14091 states and 22672 transitions. Word has length 146 [2024-11-22 04:06:33,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:33,055 INFO L471 AbstractCegarLoop]: Abstraction has 14091 states and 22672 transitions. [2024-11-22 04:06:33,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:33,056 INFO L276 IsEmpty]: Start isEmpty. Operand 14091 states and 22672 transitions. [2024-11-22 04:06:33,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-22 04:06:33,064 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:33,064 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:33,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-22 04:06:33,065 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:33,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:33,065 INFO L85 PathProgramCache]: Analyzing trace with hash 404948450, now seen corresponding path program 1 times [2024-11-22 04:06:33,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:33,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358371737] [2024-11-22 04:06:33,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:33,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:33,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:33,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:33,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:33,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358371737] [2024-11-22 04:06:33,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358371737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:33,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:33,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:06:33,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319845181] [2024-11-22 04:06:33,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:33,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:06:33,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:33,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:06:33,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:33,201 INFO L87 Difference]: Start difference. First operand 14091 states and 22672 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:35,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:35,034 INFO L93 Difference]: Finished difference Result 43891 states and 74293 transitions. [2024-11-22 04:06:35,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:06:35,034 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2024-11-22 04:06:35,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:35,176 INFO L225 Difference]: With dead ends: 43891 [2024-11-22 04:06:35,176 INFO L226 Difference]: Without dead ends: 31449 [2024-11-22 04:06:35,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:06:35,231 INFO L432 NwaCegarLoop]: 461 mSDtfsCounter, 1163 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 1978 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:35,232 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1189 Valid, 1978 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 04:06:35,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31449 states. [2024-11-22 04:06:36,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31449 to 28767. [2024-11-22 04:06:36,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28767 states, 26259 states have (on average 1.6221866788529646) internal successors, (42597), 26938 states have internal predecessors, (42597), 1289 states have call successors, (1289), 507 states have call predecessors, (1289), 1217 states have return successors, (5448), 1385 states have call predecessors, (5448), 1286 states have call successors, (5448) [2024-11-22 04:06:36,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28767 states to 28767 states and 49334 transitions. [2024-11-22 04:06:37,097 INFO L78 Accepts]: Start accepts. Automaton has 28767 states and 49334 transitions. Word has length 146 [2024-11-22 04:06:37,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:37,098 INFO L471 AbstractCegarLoop]: Abstraction has 28767 states and 49334 transitions. [2024-11-22 04:06:37,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:37,098 INFO L276 IsEmpty]: Start isEmpty. Operand 28767 states and 49334 transitions. [2024-11-22 04:06:37,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-22 04:06:37,113 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:37,113 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:37,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-22 04:06:37,113 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:37,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:37,114 INFO L85 PathProgramCache]: Analyzing trace with hash 72305312, now seen corresponding path program 1 times [2024-11-22 04:06:37,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:37,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4620562] [2024-11-22 04:06:37,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:37,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:37,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:37,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:37,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:37,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4620562] [2024-11-22 04:06:37,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4620562] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:37,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:37,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:06:37,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715428475] [2024-11-22 04:06:37,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:37,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:06:37,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:37,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:06:37,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:37,256 INFO L87 Difference]: Start difference. First operand 28767 states and 49334 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:41,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:41,024 INFO L93 Difference]: Finished difference Result 94485 states and 171329 transitions. [2024-11-22 04:06:41,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:06:41,024 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2024-11-22 04:06:41,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:41,396 INFO L225 Difference]: With dead ends: 94485 [2024-11-22 04:06:41,397 INFO L226 Difference]: Without dead ends: 67367 [2024-11-22 04:06:41,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:06:41,469 INFO L432 NwaCegarLoop]: 677 mSDtfsCounter, 1283 mSDsluCounter, 2036 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 2713 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:41,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1320 Valid, 2713 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 04:06:41,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67367 states. [2024-11-22 04:06:45,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67367 to 62000. [2024-11-22 04:06:45,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62000 states, 56658 states have (on average 1.6613540894489744) internal successors, (94129), 58731 states have internal predecessors, (94129), 2345 states have call successors, (2345), 891 states have call predecessors, (2345), 2995 states have return successors, (18792), 2505 states have call predecessors, (18792), 2342 states have call successors, (18792) [2024-11-22 04:06:45,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62000 states to 62000 states and 115266 transitions. [2024-11-22 04:06:45,851 INFO L78 Accepts]: Start accepts. Automaton has 62000 states and 115266 transitions. Word has length 146 [2024-11-22 04:06:45,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:45,851 INFO L471 AbstractCegarLoop]: Abstraction has 62000 states and 115266 transitions. [2024-11-22 04:06:45,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:45,852 INFO L276 IsEmpty]: Start isEmpty. Operand 62000 states and 115266 transitions. [2024-11-22 04:06:45,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-22 04:06:45,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:45,875 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:45,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-22 04:06:45,876 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:45,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:45,877 INFO L85 PathProgramCache]: Analyzing trace with hash 2001237538, now seen corresponding path program 1 times [2024-11-22 04:06:45,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:45,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867341973] [2024-11-22 04:06:45,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:45,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:45,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:46,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:46,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:46,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867341973] [2024-11-22 04:06:46,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867341973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:46,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:46,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:06:46,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991419894] [2024-11-22 04:06:46,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:46,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:06:46,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:46,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:06:46,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:46,004 INFO L87 Difference]: Start difference. First operand 62000 states and 115266 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:54,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:54,556 INFO L93 Difference]: Finished difference Result 210158 states and 419771 transitions. [2024-11-22 04:06:54,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:06:54,556 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2024-11-22 04:06:54,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:55,271 INFO L225 Difference]: With dead ends: 210158 [2024-11-22 04:06:55,272 INFO L226 Difference]: Without dead ends: 149807 [2024-11-22 04:06:55,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:06:55,725 INFO L432 NwaCegarLoop]: 675 mSDtfsCounter, 1098 mSDsluCounter, 2030 mSDsCounter, 0 mSdLazyCounter, 1327 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 2705 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:55,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1124 Valid, 2705 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1327 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-22 04:06:55,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149807 states.