./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.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 a61ec0d9e8ff01aa8900ac2d4a87b40f68db963fb1a53c6fbb2c11c91e3dd345 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 00:08:10,171 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 00:08:10,212 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 00:08:10,215 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 00:08:10,215 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 00:08:10,230 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 00:08:10,231 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 00:08:10,231 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 00:08:10,232 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 00:08:10,233 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 00:08:10,233 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 00:08:10,234 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 00:08:10,234 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 00:08:10,236 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 00:08:10,236 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 00:08:10,236 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 00:08:10,236 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 00:08:10,237 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 00:08:10,237 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 00:08:10,237 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 00:08:10,237 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 00:08:10,238 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 00:08:10,238 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 00:08:10,238 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 00:08:10,239 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 00:08:10,239 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 00:08:10,239 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 00:08:10,239 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 00:08:10,239 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 00:08:10,240 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 00:08:10,240 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 00:08:10,240 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 00:08:10,240 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 00:08:10,241 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 00:08:10,241 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 00:08:10,241 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 00:08:10,241 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 00:08:10,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 00:08:10,242 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 00:08:10,242 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 00:08:10,242 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 00:08:10,242 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 00:08:10,243 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a61ec0d9e8ff01aa8900ac2d4a87b40f68db963fb1a53c6fbb2c11c91e3dd345 [2024-11-20 00:08:10,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 00:08:10,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 00:08:10,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 00:08:10,442 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 00:08:10,442 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 00:08:10,443 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c [2024-11-20 00:08:11,810 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 00:08:12,003 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 00:08:12,007 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c [2024-11-20 00:08:12,024 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da91336d3/d338b2e7290348e3bfdde06cfc1c437c/FLAG80d236969 [2024-11-20 00:08:12,041 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da91336d3/d338b2e7290348e3bfdde06cfc1c437c [2024-11-20 00:08:12,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 00:08:12,045 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 00:08:12,047 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 00:08:12,047 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 00:08:12,052 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 00:08:12,052 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:08:12" (1/1) ... [2024-11-20 00:08:12,054 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39c99e79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:08:12, skipping insertion in model container [2024-11-20 00:08:12,054 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:08:12" (1/1) ... [2024-11-20 00:08:12,094 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 00:08:12,254 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.04.cil-2.c[914,927] [2024-11-20 00:08:12,306 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.04.cil-2.c[7115,7128] [2024-11-20 00:08:12,362 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 00:08:12,372 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 00:08:12,382 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.04.cil-2.c[914,927] [2024-11-20 00:08:12,397 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.04.cil-2.c[7115,7128] [2024-11-20 00:08:12,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 00:08:12,444 INFO L204 MainTranslator]: Completed translation [2024-11-20 00:08:12,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:08:12 WrapperNode [2024-11-20 00:08:12,444 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 00:08:12,445 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 00:08:12,446 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 00:08:12,446 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 00:08:12,452 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:08:12" (1/1) ... [2024-11-20 00:08:12,463 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:08:12" (1/1) ... [2024-11-20 00:08:12,498 INFO L138 Inliner]: procedures = 61, calls = 70, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 594 [2024-11-20 00:08:12,499 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 00:08:12,499 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 00:08:12,499 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 00:08:12,499 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 00:08:12,507 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:08:12" (1/1) ... [2024-11-20 00:08:12,507 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:08:12" (1/1) ... [2024-11-20 00:08:12,510 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:08:12" (1/1) ... [2024-11-20 00:08:12,525 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]. [2024-11-20 00:08:12,526 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:08:12" (1/1) ... [2024-11-20 00:08:12,526 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:08:12" (1/1) ... [2024-11-20 00:08:12,535 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:08:12" (1/1) ... [2024-11-20 00:08:12,548 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:08:12" (1/1) ... [2024-11-20 00:08:12,549 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:08:12" (1/1) ... [2024-11-20 00:08:12,551 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:08:12" (1/1) ... [2024-11-20 00:08:12,553 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 00:08:12,554 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 00:08:12,554 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 00:08:12,554 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 00:08:12,555 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:08:12" (1/1) ... [2024-11-20 00:08:12,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 00:08:12,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:08:12,584 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) [2024-11-20 00:08:12,586 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 [2024-11-20 00:08:12,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 00:08:12,625 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-20 00:08:12,625 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-20 00:08:12,625 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-11-20 00:08:12,626 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-11-20 00:08:12,626 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-20 00:08:12,627 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-20 00:08:12,627 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-20 00:08:12,627 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-20 00:08:12,627 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-11-20 00:08:12,627 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-11-20 00:08:12,627 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-20 00:08:12,627 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-20 00:08:12,628 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-20 00:08:12,628 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-20 00:08:12,628 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-11-20 00:08:12,628 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-11-20 00:08:12,628 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-11-20 00:08:12,628 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-11-20 00:08:12,629 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-11-20 00:08:12,629 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-11-20 00:08:12,629 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-20 00:08:12,629 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-20 00:08:12,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 00:08:12,630 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-20 00:08:12,630 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-20 00:08:12,630 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-11-20 00:08:12,630 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-11-20 00:08:12,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 00:08:12,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 00:08:12,631 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-20 00:08:12,631 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-20 00:08:12,631 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-11-20 00:08:12,631 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-11-20 00:08:12,758 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 00:08:12,761 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 00:08:13,187 INFO L? ?]: Removed 83 outVars from TransFormulas that were not future-live. [2024-11-20 00:08:13,187 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 00:08:13,206 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 00:08:13,207 INFO L316 CfgBuilder]: Removed 11 assume(true) statements. [2024-11-20 00:08:13,207 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:08:13 BoogieIcfgContainer [2024-11-20 00:08:13,207 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 00:08:13,209 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 00:08:13,209 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 00:08:13,212 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 00:08:13,212 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:08:12" (1/3) ... [2024-11-20 00:08:13,212 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd63150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:08:13, skipping insertion in model container [2024-11-20 00:08:13,212 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:08:12" (2/3) ... [2024-11-20 00:08:13,213 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd63150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:08:13, skipping insertion in model container [2024-11-20 00:08:13,213 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:08:13" (3/3) ... [2024-11-20 00:08:13,214 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.04.cil-2.c [2024-11-20 00:08:13,225 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 00:08:13,226 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-20 00:08:13,272 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 00:08:13,276 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;@31f8ac37, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 00:08:13,277 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-20 00:08:13,280 INFO L276 IsEmpty]: Start isEmpty. Operand has 296 states, 244 states have (on average 1.5819672131147542) internal successors, (386), 252 states have internal predecessors, (386), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-20 00:08:13,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-20 00:08:13,288 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:08:13,289 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] [2024-11-20 00:08:13,289 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:08:13,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:08:13,293 INFO L85 PathProgramCache]: Analyzing trace with hash -644842896, now seen corresponding path program 1 times [2024-11-20 00:08:13,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:08:13,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439272102] [2024-11-20 00:08:13,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:08:13,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:08:13,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:13,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:08:13,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:13,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-20 00:08:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:13,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 00:08:13,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:13,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-20 00:08:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:13,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:08:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:13,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-20 00:08:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:13,731 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-20 00:08:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:13,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:08:13,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:08:13,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439272102] [2024-11-20 00:08:13,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439272102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:08:13,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:08:13,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 00:08:13,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333691148] [2024-11-20 00:08:13,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:08:13,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 00:08:13,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:08:13,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 00:08:13,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-20 00:08:13,772 INFO L87 Difference]: Start difference. First operand has 296 states, 244 states have (on average 1.5819672131147542) internal successors, (386), 252 states have internal predecessors, (386), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-20 00:08:14,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:08:14,908 INFO L93 Difference]: Finished difference Result 737 states and 1128 transitions. [2024-11-20 00:08:14,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-20 00:08:14,910 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-11-20 00:08:14,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:08:14,928 INFO L225 Difference]: With dead ends: 737 [2024-11-20 00:08:14,928 INFO L226 Difference]: Without dead ends: 451 [2024-11-20 00:08:14,936 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2024-11-20 00:08:14,939 INFO L432 NwaCegarLoop]: 305 mSDtfsCounter, 820 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-20 00:08:14,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 1597 Invalid, 1269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-20 00:08:14,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2024-11-20 00:08:15,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 385. [2024-11-20 00:08:15,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 315 states have (on average 1.4730158730158731) internal successors, (464), 323 states have internal predecessors, (464), 45 states have call successors, (45), 22 states have call predecessors, (45), 23 states have return successors, (52), 42 states have call predecessors, (52), 41 states have call successors, (52) [2024-11-20 00:08:15,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 561 transitions. [2024-11-20 00:08:15,079 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 561 transitions. Word has length 65 [2024-11-20 00:08:15,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:08:15,081 INFO L471 AbstractCegarLoop]: Abstraction has 385 states and 561 transitions. [2024-11-20 00:08:15,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-20 00:08:15,081 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 561 transitions. [2024-11-20 00:08:15,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-20 00:08:15,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:08:15,085 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] [2024-11-20 00:08:15,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 00:08:15,086 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:08:15,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:08:15,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1621538290, now seen corresponding path program 1 times [2024-11-20 00:08:15,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:08:15,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548606335] [2024-11-20 00:08:15,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:08:15,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:08:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:15,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:08:15,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:15,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-20 00:08:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:15,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 00:08:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:15,275 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-20 00:08:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:15,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:08:15,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:15,368 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-20 00:08:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:15,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-20 00:08:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:15,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:08:15,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:08:15,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548606335] [2024-11-20 00:08:15,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548606335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:08:15,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:08:15,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-20 00:08:15,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204957105] [2024-11-20 00:08:15,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:08:15,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 00:08:15,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:08:15,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 00:08:15,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-20 00:08:15,375 INFO L87 Difference]: Start difference. First operand 385 states and 561 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-20 00:08:15,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:08:15,992 INFO L93 Difference]: Finished difference Result 592 states and 850 transitions. [2024-11-20 00:08:15,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 00:08:15,993 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2024-11-20 00:08:15,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:08:15,995 INFO L225 Difference]: With dead ends: 592 [2024-11-20 00:08:15,995 INFO L226 Difference]: Without dead ends: 411 [2024-11-20 00:08:15,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-11-20 00:08:15,997 INFO L432 NwaCegarLoop]: 255 mSDtfsCounter, 487 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1516 SdHoareTripleChecker+Invalid, 1220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 00:08:15,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 1516 Invalid, 1220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 00:08:15,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2024-11-20 00:08:16,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 395. [2024-11-20 00:08:16,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 323 states have (on average 1.4613003095975232) internal successors, (472), 331 states have internal predecessors, (472), 45 states have call successors, (45), 22 states have call predecessors, (45), 25 states have return successors, (54), 44 states have call predecessors, (54), 41 states have call successors, (54) [2024-11-20 00:08:16,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 571 transitions. [2024-11-20 00:08:16,020 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 571 transitions. Word has length 65 [2024-11-20 00:08:16,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:08:16,020 INFO L471 AbstractCegarLoop]: Abstraction has 395 states and 571 transitions. [2024-11-20 00:08:16,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-20 00:08:16,020 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 571 transitions. [2024-11-20 00:08:16,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-20 00:08:16,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:08:16,023 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] [2024-11-20 00:08:16,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 00:08:16,023 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:08:16,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:08:16,023 INFO L85 PathProgramCache]: Analyzing trace with hash 592178992, now seen corresponding path program 1 times [2024-11-20 00:08:16,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:08:16,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910474094] [2024-11-20 00:08:16,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:08:16,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:08:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:16,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:08:16,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:16,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-20 00:08:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:16,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 00:08:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:16,097 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-20 00:08:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:16,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:08:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:16,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-20 00:08:16,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:16,117 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-20 00:08:16,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:16,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:08:16,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:08:16,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910474094] [2024-11-20 00:08:16,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910474094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:08:16,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:08:16,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-20 00:08:16,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696384007] [2024-11-20 00:08:16,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:08:16,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 00:08:16,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:08:16,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 00:08:16,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-20 00:08:16,121 INFO L87 Difference]: Start difference. First operand 395 states and 571 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-20 00:08:16,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:08:16,756 INFO L93 Difference]: Finished difference Result 616 states and 878 transitions. [2024-11-20 00:08:16,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 00:08:16,757 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2024-11-20 00:08:16,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:08:16,759 INFO L225 Difference]: With dead ends: 616 [2024-11-20 00:08:16,759 INFO L226 Difference]: Without dead ends: 425 [2024-11-20 00:08:16,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-20 00:08:16,761 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 493 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 00:08:16,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 1515 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 00:08:16,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2024-11-20 00:08:16,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 405. [2024-11-20 00:08:16,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 331 states have (on average 1.4501510574018126) internal successors, (480), 339 states have internal predecessors, (480), 45 states have call successors, (45), 22 states have call predecessors, (45), 27 states have return successors, (56), 46 states have call predecessors, (56), 41 states have call successors, (56) [2024-11-20 00:08:16,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 581 transitions. [2024-11-20 00:08:16,780 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 581 transitions. Word has length 65 [2024-11-20 00:08:16,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:08:16,780 INFO L471 AbstractCegarLoop]: Abstraction has 405 states and 581 transitions. [2024-11-20 00:08:16,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-20 00:08:16,780 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 581 transitions. [2024-11-20 00:08:16,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-20 00:08:16,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:08:16,782 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] [2024-11-20 00:08:16,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 00:08:16,783 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:08:16,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:08:16,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1978382386, now seen corresponding path program 1 times [2024-11-20 00:08:16,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:08:16,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467626050] [2024-11-20 00:08:16,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:08:16,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:08:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:16,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:08:16,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:16,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-20 00:08:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:16,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 00:08:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:16,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-20 00:08:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:16,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:08:16,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:16,870 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-20 00:08:16,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:16,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-20 00:08:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:16,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:08:16,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:08:16,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467626050] [2024-11-20 00:08:16,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467626050] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:08:16,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:08:16,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 00:08:16,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677977238] [2024-11-20 00:08:16,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:08:16,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 00:08:16,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:08:16,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 00:08:16,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-20 00:08:16,883 INFO L87 Difference]: Start difference. First operand 405 states and 581 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-20 00:08:17,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:08:17,524 INFO L93 Difference]: Finished difference Result 753 states and 1062 transitions. [2024-11-20 00:08:17,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 00:08:17,525 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-11-20 00:08:17,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:08:17,527 INFO L225 Difference]: With dead ends: 753 [2024-11-20 00:08:17,528 INFO L226 Difference]: Without dead ends: 551 [2024-11-20 00:08:17,528 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-20 00:08:17,529 INFO L432 NwaCegarLoop]: 246 mSDtfsCounter, 752 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 00:08:17,530 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 1216 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 00:08:17,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2024-11-20 00:08:17,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 497. [2024-11-20 00:08:17,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 404 states have (on average 1.4232673267326732) internal successors, (575), 413 states have internal predecessors, (575), 56 states have call successors, (56), 29 states have call predecessors, (56), 35 states have return successors, (69), 58 states have call predecessors, (69), 52 states have call successors, (69) [2024-11-20 00:08:17,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 700 transitions. [2024-11-20 00:08:17,551 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 700 transitions. Word has length 65 [2024-11-20 00:08:17,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:08:17,552 INFO L471 AbstractCegarLoop]: Abstraction has 497 states and 700 transitions. [2024-11-20 00:08:17,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-20 00:08:17,552 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 700 transitions. [2024-11-20 00:08:17,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-20 00:08:17,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:08:17,553 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] [2024-11-20 00:08:17,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 00:08:17,554 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:08:17,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:08:17,554 INFO L85 PathProgramCache]: Analyzing trace with hash 2118930996, now seen corresponding path program 1 times [2024-11-20 00:08:17,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:08:17,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633194615] [2024-11-20 00:08:17,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:08:17,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:08:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:17,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:08:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:17,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-20 00:08:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:17,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 00:08:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:17,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-20 00:08:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:17,636 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:08:17,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:17,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-20 00:08:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:17,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-20 00:08:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:17,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:08:17,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:08:17,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633194615] [2024-11-20 00:08:17,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633194615] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:08:17,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:08:17,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 00:08:17,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776726265] [2024-11-20 00:08:17,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:08:17,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 00:08:17,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:08:17,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 00:08:17,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-20 00:08:17,660 INFO L87 Difference]: Start difference. First operand 497 states and 700 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-20 00:08:18,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:08:18,504 INFO L93 Difference]: Finished difference Result 889 states and 1211 transitions. [2024-11-20 00:08:18,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-20 00:08:18,505 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-11-20 00:08:18,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:08:18,508 INFO L225 Difference]: With dead ends: 889 [2024-11-20 00:08:18,508 INFO L226 Difference]: Without dead ends: 604 [2024-11-20 00:08:18,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2024-11-20 00:08:18,509 INFO L432 NwaCegarLoop]: 249 mSDtfsCounter, 817 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-20 00:08:18,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 1291 Invalid, 1187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-20 00:08:18,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2024-11-20 00:08:18,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 509. [2024-11-20 00:08:18,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 414 states have (on average 1.4130434782608696) internal successors, (585), 423 states have internal predecessors, (585), 57 states have call successors, (57), 30 states have call predecessors, (57), 36 states have return successors, (68), 59 states have call predecessors, (68), 53 states have call successors, (68) [2024-11-20 00:08:18,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 710 transitions. [2024-11-20 00:08:18,533 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 710 transitions. Word has length 65 [2024-11-20 00:08:18,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:08:18,533 INFO L471 AbstractCegarLoop]: Abstraction has 509 states and 710 transitions. [2024-11-20 00:08:18,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-20 00:08:18,534 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 710 transitions. [2024-11-20 00:08:18,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-20 00:08:18,535 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:08:18,535 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] [2024-11-20 00:08:18,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 00:08:18,535 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:08:18,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:08:18,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1984917490, now seen corresponding path program 1 times [2024-11-20 00:08:18,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:08:18,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563272187] [2024-11-20 00:08:18,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:08:18,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:08:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:18,571 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:08:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:18,577 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-20 00:08:18,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:18,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 00:08:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:18,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-20 00:08:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:18,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:08:18,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:18,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-20 00:08:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:18,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-20 00:08:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:18,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:08:18,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:08:18,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563272187] [2024-11-20 00:08:18,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563272187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:08:18,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:08:18,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:08:18,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422501413] [2024-11-20 00:08:18,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:08:18,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:08:18,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:08:18,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:08:18,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:08:18,607 INFO L87 Difference]: Start difference. First operand 509 states and 710 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-20 00:08:19,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:08:19,086 INFO L93 Difference]: Finished difference Result 1151 states and 1557 transitions. [2024-11-20 00:08:19,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 00:08:19,087 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-11-20 00:08:19,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:08:19,090 INFO L225 Difference]: With dead ends: 1151 [2024-11-20 00:08:19,091 INFO L226 Difference]: Without dead ends: 855 [2024-11-20 00:08:19,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2024-11-20 00:08:19,092 INFO L432 NwaCegarLoop]: 234 mSDtfsCounter, 986 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 00:08:19,092 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1010 Valid, 848 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 00:08:19,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2024-11-20 00:08:19,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 799. [2024-11-20 00:08:19,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 638 states have (on average 1.3667711598746082) internal successors, (872), 654 states have internal predecessors, (872), 92 states have call successors, (92), 52 states have call predecessors, (92), 67 states have return successors, (125), 99 states have call predecessors, (125), 88 states have call successors, (125) [2024-11-20 00:08:19,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1089 transitions. [2024-11-20 00:08:19,129 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1089 transitions. Word has length 65 [2024-11-20 00:08:19,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:08:19,136 INFO L471 AbstractCegarLoop]: Abstraction has 799 states and 1089 transitions. [2024-11-20 00:08:19,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-20 00:08:19,137 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1089 transitions. [2024-11-20 00:08:19,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-20 00:08:19,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:08:19,138 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] [2024-11-20 00:08:19,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 00:08:19,139 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:08:19,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:08:19,139 INFO L85 PathProgramCache]: Analyzing trace with hash 2085986588, now seen corresponding path program 1 times [2024-11-20 00:08:19,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:08:19,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391348175] [2024-11-20 00:08:19,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:08:19,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:08:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:19,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:08:19,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:19,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-20 00:08:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:19,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 00:08:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:19,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-20 00:08:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:19,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:08:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:19,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-20 00:08:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:19,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-20 00:08:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:19,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:08:19,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:08:19,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391348175] [2024-11-20 00:08:19,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391348175] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:08:19,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:08:19,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 00:08:19,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104400290] [2024-11-20 00:08:19,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:08:19,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 00:08:19,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:08:19,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 00:08:19,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 00:08:19,218 INFO L87 Difference]: Start difference. First operand 799 states and 1089 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-20 00:08:19,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:08:19,715 INFO L93 Difference]: Finished difference Result 2002 states and 2660 transitions. [2024-11-20 00:08:19,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 00:08:19,715 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2024-11-20 00:08:19,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:08:19,720 INFO L225 Difference]: With dead ends: 2002 [2024-11-20 00:08:19,720 INFO L226 Difference]: Without dead ends: 1395 [2024-11-20 00:08:19,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-20 00:08:19,722 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 726 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 00:08:19,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 813 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 00:08:19,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2024-11-20 00:08:19,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1280. [2024-11-20 00:08:19,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 1017 states have (on average 1.3303834808259587) internal successors, (1353), 1036 states have internal predecessors, (1353), 137 states have call successors, (137), 96 states have call predecessors, (137), 124 states have return successors, (197), 154 states have call predecessors, (197), 133 states have call successors, (197) [2024-11-20 00:08:19,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1687 transitions. [2024-11-20 00:08:19,780 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1687 transitions. Word has length 66 [2024-11-20 00:08:19,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:08:19,780 INFO L471 AbstractCegarLoop]: Abstraction has 1280 states and 1687 transitions. [2024-11-20 00:08:19,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-20 00:08:19,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1687 transitions. [2024-11-20 00:08:19,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-20 00:08:19,781 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:08:19,782 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] [2024-11-20 00:08:19,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 00:08:19,782 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:08:19,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:08:19,782 INFO L85 PathProgramCache]: Analyzing trace with hash -750741049, now seen corresponding path program 1 times [2024-11-20 00:08:19,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:08:19,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298634491] [2024-11-20 00:08:19,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:08:19,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:08:19,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:19,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:08:19,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:19,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-20 00:08:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:19,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 00:08:19,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:19,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-20 00:08:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:19,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:08:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:19,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-20 00:08:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:19,838 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-20 00:08:19,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:19,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:08:19,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:08:19,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298634491] [2024-11-20 00:08:19,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298634491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:08:19,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:08:19,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 00:08:19,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837632142] [2024-11-20 00:08:19,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:08:19,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 00:08:19,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:08:19,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 00:08:19,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 00:08:19,843 INFO L87 Difference]: Start difference. First operand 1280 states and 1687 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-20 00:08:20,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:08:20,394 INFO L93 Difference]: Finished difference Result 3468 states and 4493 transitions. [2024-11-20 00:08:20,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 00:08:20,394 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2024-11-20 00:08:20,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:08:20,403 INFO L225 Difference]: With dead ends: 3468 [2024-11-20 00:08:20,403 INFO L226 Difference]: Without dead ends: 2400 [2024-11-20 00:08:20,406 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-11-20 00:08:20,407 INFO L432 NwaCegarLoop]: 251 mSDtfsCounter, 791 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 00:08:20,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 854 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 00:08:20,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2400 states. [2024-11-20 00:08:20,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2400 to 2142. [2024-11-20 00:08:20,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2142 states, 1683 states have (on average 1.2953060011883542) internal successors, (2180), 1712 states have internal predecessors, (2180), 235 states have call successors, (235), 180 states have call predecessors, (235), 222 states have return successors, (333), 256 states have call predecessors, (333), 231 states have call successors, (333) [2024-11-20 00:08:20,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 2748 transitions. [2024-11-20 00:08:20,565 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 2748 transitions. Word has length 66 [2024-11-20 00:08:20,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:08:20,567 INFO L471 AbstractCegarLoop]: Abstraction has 2142 states and 2748 transitions. [2024-11-20 00:08:20,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-20 00:08:20,567 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 2748 transitions. [2024-11-20 00:08:20,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-20 00:08:20,570 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:08:20,570 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] [2024-11-20 00:08:20,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 00:08:20,571 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:08:20,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:08:20,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1699431707, now seen corresponding path program 1 times [2024-11-20 00:08:20,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:08:20,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048464671] [2024-11-20 00:08:20,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:08:20,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:08:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:20,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:08:20,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:20,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-20 00:08:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:20,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 00:08:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:20,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-20 00:08:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:20,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:08:20,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:20,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-20 00:08:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:20,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-20 00:08:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:20,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:08:20,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:08:20,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048464671] [2024-11-20 00:08:20,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048464671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:08:20,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:08:20,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 00:08:20,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020104618] [2024-11-20 00:08:20,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:08:20,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 00:08:20,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:08:20,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 00:08:20,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 00:08:20,635 INFO L87 Difference]: Start difference. First operand 2142 states and 2748 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-20 00:08:21,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:08:21,214 INFO L93 Difference]: Finished difference Result 5052 states and 6398 transitions. [2024-11-20 00:08:21,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 00:08:21,215 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2024-11-20 00:08:21,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:08:21,226 INFO L225 Difference]: With dead ends: 5052 [2024-11-20 00:08:21,227 INFO L226 Difference]: Without dead ends: 3122 [2024-11-20 00:08:21,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-20 00:08:21,231 INFO L432 NwaCegarLoop]: 265 mSDtfsCounter, 776 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 00:08:21,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [801 Valid, 900 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 00:08:21,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2024-11-20 00:08:21,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 2874. [2024-11-20 00:08:21,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2874 states, 2251 states have (on average 1.281208351843625) internal successors, (2884), 2288 states have internal predecessors, (2884), 315 states have call successors, (315), 250 states have call predecessors, (315), 306 states have return successors, (442), 342 states have call predecessors, (442), 311 states have call successors, (442) [2024-11-20 00:08:21,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 3641 transitions. [2024-11-20 00:08:21,416 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 3641 transitions. Word has length 72 [2024-11-20 00:08:21,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:08:21,416 INFO L471 AbstractCegarLoop]: Abstraction has 2874 states and 3641 transitions. [2024-11-20 00:08:21,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-20 00:08:21,416 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 3641 transitions. [2024-11-20 00:08:21,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-20 00:08:21,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:08:21,418 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] [2024-11-20 00:08:21,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 00:08:21,418 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:08:21,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:08:21,419 INFO L85 PathProgramCache]: Analyzing trace with hash 626400016, now seen corresponding path program 1 times [2024-11-20 00:08:21,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:08:21,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479500856] [2024-11-20 00:08:21,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:08:21,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:08:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:21,468 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:08:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:21,476 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-20 00:08:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:21,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 00:08:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:21,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-20 00:08:21,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:21,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:08:21,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:21,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-20 00:08:21,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:21,492 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-20 00:08:21,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:21,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:08:21,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:08:21,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479500856] [2024-11-20 00:08:21,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479500856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:08:21,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:08:21,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:08:21,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699569549] [2024-11-20 00:08:21,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:08:21,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:08:21,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:08:21,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:08:21,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:08:21,497 INFO L87 Difference]: Start difference. First operand 2874 states and 3641 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-20 00:08:22,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:08:22,163 INFO L93 Difference]: Finished difference Result 3648 states and 4572 transitions. [2024-11-20 00:08:22,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 00:08:22,164 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2024-11-20 00:08:22,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:08:22,176 INFO L225 Difference]: With dead ends: 3648 [2024-11-20 00:08:22,176 INFO L226 Difference]: Without dead ends: 3645 [2024-11-20 00:08:22,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2024-11-20 00:08:22,177 INFO L432 NwaCegarLoop]: 258 mSDtfsCounter, 1196 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 00:08:22,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1206 Valid, 874 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 00:08:22,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3645 states. [2024-11-20 00:08:22,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3645 to 3368. [2024-11-20 00:08:22,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3368 states, 2636 states have (on average 1.2731411229135052) internal successors, (3356), 2678 states have internal predecessors, (3356), 365 states have call successors, (365), 294 states have call predecessors, (365), 365 states have return successors, (521), 402 states have call predecessors, (521), 362 states have call successors, (521) [2024-11-20 00:08:22,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3368 states to 3368 states and 4242 transitions. [2024-11-20 00:08:22,500 INFO L78 Accepts]: Start accepts. Automaton has 3368 states and 4242 transitions. Word has length 73 [2024-11-20 00:08:22,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:08:22,500 INFO L471 AbstractCegarLoop]: Abstraction has 3368 states and 4242 transitions. [2024-11-20 00:08:22,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-20 00:08:22,501 INFO L276 IsEmpty]: Start isEmpty. Operand 3368 states and 4242 transitions. [2024-11-20 00:08:22,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-20 00:08:22,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:08:22,502 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] [2024-11-20 00:08:22,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-20 00:08:22,502 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:08:22,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:08:22,503 INFO L85 PathProgramCache]: Analyzing trace with hash -2057315323, now seen corresponding path program 1 times [2024-11-20 00:08:22,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:08:22,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034293826] [2024-11-20 00:08:22,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:08:22,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:08:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:22,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:08:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:22,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-20 00:08:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:22,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 00:08:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:22,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-20 00:08:22,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:22,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:08:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:22,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-20 00:08:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:22,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-20 00:08:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:22,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:08:22,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:08:22,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034293826] [2024-11-20 00:08:22,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034293826] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:08:22,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428628126] [2024-11-20 00:08:22,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:08:22,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:08:22,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:08:22,651 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) [2024-11-20 00:08:22,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 00:08:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:22,723 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-20 00:08:22,731 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:08:22,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:08:22,950 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 00:08:23,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:08:23,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428628126] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 00:08:23,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 00:08:23,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2024-11-20 00:08:23,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746444654] [2024-11-20 00:08:23,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 00:08:23,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 00:08:23,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:08:23,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 00:08:23,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-20 00:08:23,060 INFO L87 Difference]: Start difference. First operand 3368 states and 4242 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-20 00:08:24,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:08:24,517 INFO L93 Difference]: Finished difference Result 7809 states and 9728 transitions. [2024-11-20 00:08:24,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-20 00:08:24,517 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2024-11-20 00:08:24,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:08:24,543 INFO L225 Difference]: With dead ends: 7809 [2024-11-20 00:08:24,543 INFO L226 Difference]: Without dead ends: 7806 [2024-11-20 00:08:24,546 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2024-11-20 00:08:24,546 INFO L432 NwaCegarLoop]: 342 mSDtfsCounter, 1555 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 1358 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 1445 SdHoareTripleChecker+Invalid, 1579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 1358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-20 00:08:24,546 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1619 Valid, 1445 Invalid, 1579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 1358 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-20 00:08:24,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7806 states. [2024-11-20 00:08:24,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7806 to 5158. [2024-11-20 00:08:24,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5158 states, 4040 states have (on average 1.2702970297029703) internal successors, (5132), 4104 states have internal predecessors, (5132), 549 states have call successors, (549), 452 states have call predecessors, (549), 567 states have return successors, (799), 608 states have call predecessors, (799), 546 states have call successors, (799) [2024-11-20 00:08:25,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5158 states to 5158 states and 6480 transitions. [2024-11-20 00:08:25,006 INFO L78 Accepts]: Start accepts. Automaton has 5158 states and 6480 transitions. Word has length 74 [2024-11-20 00:08:25,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:08:25,007 INFO L471 AbstractCegarLoop]: Abstraction has 5158 states and 6480 transitions. [2024-11-20 00:08:25,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-20 00:08:25,007 INFO L276 IsEmpty]: Start isEmpty. Operand 5158 states and 6480 transitions. [2024-11-20 00:08:25,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-20 00:08:25,009 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:08:25,009 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] [2024-11-20 00:08:25,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-20 00:08:25,210 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 [2024-11-20 00:08:25,211 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:08:25,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:08:25,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1368954160, now seen corresponding path program 2 times [2024-11-20 00:08:25,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:08:25,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895719952] [2024-11-20 00:08:25,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:08:25,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:08:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:25,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:08:25,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:25,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-20 00:08:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:25,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 00:08:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:25,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-20 00:08:25,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:25,266 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:08:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:25,268 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-20 00:08:25,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:25,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-20 00:08:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:25,271 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:08:25,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:08:25,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895719952] [2024-11-20 00:08:25,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895719952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:08:25,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:08:25,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 00:08:25,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312236467] [2024-11-20 00:08:25,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:08:25,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 00:08:25,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:08:25,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 00:08:25,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 00:08:25,273 INFO L87 Difference]: Start difference. First operand 5158 states and 6480 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-20 00:08:25,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:08:25,906 INFO L93 Difference]: Finished difference Result 7840 states and 9853 transitions. [2024-11-20 00:08:25,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 00:08:25,907 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2024-11-20 00:08:25,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:08:25,921 INFO L225 Difference]: With dead ends: 7840 [2024-11-20 00:08:25,921 INFO L226 Difference]: Without dead ends: 3765 [2024-11-20 00:08:25,929 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-20 00:08:25,929 INFO L432 NwaCegarLoop]: 292 mSDtfsCounter, 856 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 00:08:25,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 770 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 00:08:25,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2024-11-20 00:08:26,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 3530. [2024-11-20 00:08:26,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3530 states, 2768 states have (on average 1.254335260115607) internal successors, (3472), 2810 states have internal predecessors, (3472), 381 states have call successors, (381), 308 states have call predecessors, (381), 379 states have return successors, (525), 418 states have call predecessors, (525), 378 states have call successors, (525) [2024-11-20 00:08:26,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3530 states to 3530 states and 4378 transitions. [2024-11-20 00:08:26,208 INFO L78 Accepts]: Start accepts. Automaton has 3530 states and 4378 transitions. Word has length 77 [2024-11-20 00:08:26,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:08:26,208 INFO L471 AbstractCegarLoop]: Abstraction has 3530 states and 4378 transitions. [2024-11-20 00:08:26,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-20 00:08:26,209 INFO L276 IsEmpty]: Start isEmpty. Operand 3530 states and 4378 transitions. [2024-11-20 00:08:26,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-20 00:08:26,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:08:26,212 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] [2024-11-20 00:08:26,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-20 00:08:26,213 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:08:26,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:08:26,213 INFO L85 PathProgramCache]: Analyzing trace with hash 255750743, now seen corresponding path program 1 times [2024-11-20 00:08:26,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:08:26,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273538038] [2024-11-20 00:08:26,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:08:26,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:08:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:26,284 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:08:26,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:26,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-20 00:08:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:26,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 00:08:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:26,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-20 00:08:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:26,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:08:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:26,320 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-20 00:08:26,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:26,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-20 00:08:26,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:26,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-20 00:08:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:26,325 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 00:08:26,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:08:26,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273538038] [2024-11-20 00:08:26,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273538038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:08:26,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:08:26,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 00:08:26,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090895174] [2024-11-20 00:08:26,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:08:26,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 00:08:26,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:08:26,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 00:08:26,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-20 00:08:26,327 INFO L87 Difference]: Start difference. First operand 3530 states and 4378 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-20 00:08:27,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:08:27,708 INFO L93 Difference]: Finished difference Result 10402 states and 12795 transitions. [2024-11-20 00:08:27,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-20 00:08:27,710 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2024-11-20 00:08:27,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:08:27,744 INFO L225 Difference]: With dead ends: 10402 [2024-11-20 00:08:27,745 INFO L226 Difference]: Without dead ends: 5765 [2024-11-20 00:08:27,756 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2024-11-20 00:08:27,757 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 969 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-20 00:08:27,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [986 Valid, 1347 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-20 00:08:27,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5765 states. [2024-11-20 00:08:28,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5765 to 5445. [2024-11-20 00:08:28,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5445 states, 4226 states have (on average 1.2292948414576432) internal successors, (5195), 4311 states have internal predecessors, (5195), 585 states have call successors, (585), 482 states have call predecessors, (585), 632 states have return successors, (907), 658 states have call predecessors, (907), 582 states have call successors, (907) [2024-11-20 00:08:28,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5445 states to 5445 states and 6687 transitions. [2024-11-20 00:08:28,441 INFO L78 Accepts]: Start accepts. Automaton has 5445 states and 6687 transitions. Word has length 84 [2024-11-20 00:08:28,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:08:28,442 INFO L471 AbstractCegarLoop]: Abstraction has 5445 states and 6687 transitions. [2024-11-20 00:08:28,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-20 00:08:28,443 INFO L276 IsEmpty]: Start isEmpty. Operand 5445 states and 6687 transitions. [2024-11-20 00:08:28,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-20 00:08:28,447 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:08:28,447 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] [2024-11-20 00:08:28,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-20 00:08:28,448 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:08:28,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:08:28,448 INFO L85 PathProgramCache]: Analyzing trace with hash 430266766, now seen corresponding path program 1 times [2024-11-20 00:08:28,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:08:28,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733889455] [2024-11-20 00:08:28,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:08:28,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:08:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:28,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:08:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:28,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-20 00:08:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:28,546 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 00:08:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:28,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-20 00:08:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:28,551 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:08:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:28,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-20 00:08:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:28,555 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-20 00:08:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:28,559 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-20 00:08:28,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:28,572 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 00:08:28,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:08:28,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733889455] [2024-11-20 00:08:28,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733889455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:08:28,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:08:28,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-20 00:08:28,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950865337] [2024-11-20 00:08:28,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:08:28,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 00:08:28,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:08:28,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 00:08:28,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-20 00:08:28,574 INFO L87 Difference]: Start difference. First operand 5445 states and 6687 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-20 00:08:29,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:08:29,801 INFO L93 Difference]: Finished difference Result 9448 states and 11527 transitions. [2024-11-20 00:08:29,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-20 00:08:29,801 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2024-11-20 00:08:29,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:08:29,817 INFO L225 Difference]: With dead ends: 9448 [2024-11-20 00:08:29,817 INFO L226 Difference]: Without dead ends: 4855 [2024-11-20 00:08:29,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2024-11-20 00:08:29,826 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 1931 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1973 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 1462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-20 00:08:29,826 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1973 Valid, 1165 Invalid, 1462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-20 00:08:29,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4855 states. [2024-11-20 00:08:30,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4855 to 4521. [2024-11-20 00:08:30,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4521 states, 3515 states have (on average 1.2216216216216216) internal successors, (4294), 3582 states have internal predecessors, (4294), 486 states have call successors, (486), 397 states have call predecessors, (486), 518 states have return successors, (685), 548 states have call predecessors, (685), 483 states have call successors, (685) [2024-11-20 00:08:30,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4521 states to 4521 states and 5465 transitions. [2024-11-20 00:08:30,279 INFO L78 Accepts]: Start accepts. Automaton has 4521 states and 5465 transitions. Word has length 93 [2024-11-20 00:08:30,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:08:30,280 INFO L471 AbstractCegarLoop]: Abstraction has 4521 states and 5465 transitions. [2024-11-20 00:08:30,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-20 00:08:30,280 INFO L276 IsEmpty]: Start isEmpty. Operand 4521 states and 5465 transitions. [2024-11-20 00:08:30,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-20 00:08:30,287 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:08:30,287 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] [2024-11-20 00:08:30,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-20 00:08:30,287 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:08:30,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:08:30,287 INFO L85 PathProgramCache]: Analyzing trace with hash 196053049, now seen corresponding path program 1 times [2024-11-20 00:08:30,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:08:30,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094140719] [2024-11-20 00:08:30,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:08:30,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:08:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:30,358 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:08:30,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:30,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 00:08:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:30,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-20 00:08:30,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:30,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-20 00:08:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:30,450 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-20 00:08:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:30,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:08:30,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:08:30,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094140719] [2024-11-20 00:08:30,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094140719] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:08:30,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:08:30,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 00:08:30,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964145085] [2024-11-20 00:08:30,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:08:30,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 00:08:30,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:08:30,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 00:08:30,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 00:08:30,458 INFO L87 Difference]: Start difference. First operand 4521 states and 5465 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:08:31,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:08:31,854 INFO L93 Difference]: Finished difference Result 4985 states and 6186 transitions. [2024-11-20 00:08:31,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 00:08:31,856 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-20 00:08:31,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:08:31,874 INFO L225 Difference]: With dead ends: 4985 [2024-11-20 00:08:31,874 INFO L226 Difference]: Without dead ends: 4808 [2024-11-20 00:08:31,876 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-20 00:08:31,878 INFO L432 NwaCegarLoop]: 234 mSDtfsCounter, 885 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 1199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-20 00:08:31,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [906 Valid, 893 Invalid, 1199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-20 00:08:31,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4808 states. [2024-11-20 00:08:32,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4808 to 4699. [2024-11-20 00:08:32,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4699 states, 3673 states have (on average 1.2352300571739723) internal successors, (4537), 3741 states have internal predecessors, (4537), 499 states have call successors, (499), 403 states have call predecessors, (499), 525 states have return successors, (701), 561 states have call predecessors, (701), 496 states have call successors, (701) [2024-11-20 00:08:32,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4699 states to 4699 states and 5737 transitions. [2024-11-20 00:08:32,366 INFO L78 Accepts]: Start accepts. Automaton has 4699 states and 5737 transitions. Word has length 91 [2024-11-20 00:08:32,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:08:32,366 INFO L471 AbstractCegarLoop]: Abstraction has 4699 states and 5737 transitions. [2024-11-20 00:08:32,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:08:32,367 INFO L276 IsEmpty]: Start isEmpty. Operand 4699 states and 5737 transitions. [2024-11-20 00:08:32,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-20 00:08:32,370 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:08:32,371 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] [2024-11-20 00:08:32,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-20 00:08:32,371 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:08:32,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:08:32,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1858651595, now seen corresponding path program 1 times [2024-11-20 00:08:32,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:08:32,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500643507] [2024-11-20 00:08:32,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:08:32,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:08:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:32,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:08:32,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:32,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 00:08:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:32,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-20 00:08:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:32,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-20 00:08:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:32,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-20 00:08:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:32,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:08:32,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:08:32,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500643507] [2024-11-20 00:08:32,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500643507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:08:32,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:08:32,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:08:32,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725738202] [2024-11-20 00:08:32,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:08:32,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:08:32,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:08:32,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:08:32,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:08:32,515 INFO L87 Difference]: Start difference. First operand 4699 states and 5737 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:08:34,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:08:34,422 INFO L93 Difference]: Finished difference Result 5398 states and 6818 transitions. [2024-11-20 00:08:34,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 00:08:34,422 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-20 00:08:34,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:08:34,436 INFO L225 Difference]: With dead ends: 5398 [2024-11-20 00:08:34,436 INFO L226 Difference]: Without dead ends: 5043 [2024-11-20 00:08:34,438 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-20 00:08:34,439 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 923 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 1573 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 1676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-20 00:08:34,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [944 Valid, 1153 Invalid, 1676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1573 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-20 00:08:34,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5043 states. [2024-11-20 00:08:35,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5043 to 4866. [2024-11-20 00:08:35,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4866 states, 3820 states have (on average 1.2455497382198952) internal successors, (4758), 3889 states have internal predecessors, (4758), 512 states have call successors, (512), 409 states have call predecessors, (512), 532 states have return successors, (716), 575 states have call predecessors, (716), 509 states have call successors, (716) [2024-11-20 00:08:35,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4866 states to 4866 states and 5986 transitions. [2024-11-20 00:08:35,162 INFO L78 Accepts]: Start accepts. Automaton has 4866 states and 5986 transitions. Word has length 91 [2024-11-20 00:08:35,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:08:35,163 INFO L471 AbstractCegarLoop]: Abstraction has 4866 states and 5986 transitions. [2024-11-20 00:08:35,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:08:35,163 INFO L276 IsEmpty]: Start isEmpty. Operand 4866 states and 5986 transitions. [2024-11-20 00:08:35,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-20 00:08:35,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:08:35,165 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] [2024-11-20 00:08:35,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-20 00:08:35,166 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:08:35,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:08:35,166 INFO L85 PathProgramCache]: Analyzing trace with hash -124547145, now seen corresponding path program 1 times [2024-11-20 00:08:35,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:08:35,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001178831] [2024-11-20 00:08:35,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:08:35,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:08:35,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:35,215 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:08:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:35,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 00:08:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:35,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-20 00:08:35,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:35,272 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-20 00:08:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:35,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-20 00:08:35,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:35,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:08:35,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:08:35,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001178831] [2024-11-20 00:08:35,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001178831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:08:35,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:08:35,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:08:35,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497554411] [2024-11-20 00:08:35,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:08:35,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:08:35,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:08:35,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:08:35,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:08:35,280 INFO L87 Difference]: Start difference. First operand 4866 states and 5986 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:08:36,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:08:36,997 INFO L93 Difference]: Finished difference Result 6006 states and 7745 transitions. [2024-11-20 00:08:36,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 00:08:36,998 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-20 00:08:36,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:08:37,011 INFO L225 Difference]: With dead ends: 6006 [2024-11-20 00:08:37,011 INFO L226 Difference]: Without dead ends: 5484 [2024-11-20 00:08:37,013 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-20 00:08:37,013 INFO L432 NwaCegarLoop]: 358 mSDtfsCounter, 890 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 1712 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 1797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-20 00:08:37,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 1549 Invalid, 1797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1712 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-20 00:08:37,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5484 states. [2024-11-20 00:08:37,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5484 to 5201. [2024-11-20 00:08:37,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5201 states, 4115 states have (on average 1.2639125151883353) internal successors, (5201), 4186 states have internal predecessors, (5201), 538 states have call successors, (538), 421 states have call predecessors, (538), 546 states have return successors, (750), 603 states have call predecessors, (750), 535 states have call successors, (750) [2024-11-20 00:08:37,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5201 states to 5201 states and 6489 transitions. [2024-11-20 00:08:37,525 INFO L78 Accepts]: Start accepts. Automaton has 5201 states and 6489 transitions. Word has length 91 [2024-11-20 00:08:37,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:08:37,526 INFO L471 AbstractCegarLoop]: Abstraction has 5201 states and 6489 transitions. [2024-11-20 00:08:37,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:08:37,526 INFO L276 IsEmpty]: Start isEmpty. Operand 5201 states and 6489 transitions. [2024-11-20 00:08:37,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-20 00:08:37,529 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:08:37,529 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] [2024-11-20 00:08:37,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-20 00:08:37,529 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:08:37,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:08:37,530 INFO L85 PathProgramCache]: Analyzing trace with hash 762675701, now seen corresponding path program 1 times [2024-11-20 00:08:37,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:08:37,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846494521] [2024-11-20 00:08:37,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:08:37,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:08:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:37,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:08:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:37,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 00:08:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:37,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-20 00:08:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:37,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-20 00:08:37,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:37,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-20 00:08:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:37,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:08:37,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:08:37,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846494521] [2024-11-20 00:08:37,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846494521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:08:37,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:08:37,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:08:37,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788354324] [2024-11-20 00:08:37,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:08:37,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:08:37,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:08:37,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:08:37,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:08:37,630 INFO L87 Difference]: Start difference. First operand 5201 states and 6489 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:08:38,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:08:38,857 INFO L93 Difference]: Finished difference Result 6329 states and 8239 transitions. [2024-11-20 00:08:38,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 00:08:38,858 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-20 00:08:38,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:08:38,872 INFO L225 Difference]: With dead ends: 6329 [2024-11-20 00:08:38,872 INFO L226 Difference]: Without dead ends: 5472 [2024-11-20 00:08:38,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-20 00:08:38,875 INFO L432 NwaCegarLoop]: 219 mSDtfsCounter, 723 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-20 00:08:38,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 909 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-20 00:08:38,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5472 states. [2024-11-20 00:08:39,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5472 to 5201. [2024-11-20 00:08:39,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5201 states, 4115 states have (on average 1.2626974483596598) internal successors, (5196), 4186 states have internal predecessors, (5196), 538 states have call successors, (538), 421 states have call predecessors, (538), 546 states have return successors, (750), 603 states have call predecessors, (750), 535 states have call successors, (750) [2024-11-20 00:08:39,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5201 states to 5201 states and 6484 transitions. [2024-11-20 00:08:39,780 INFO L78 Accepts]: Start accepts. Automaton has 5201 states and 6484 transitions. Word has length 91 [2024-11-20 00:08:39,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:08:39,784 INFO L471 AbstractCegarLoop]: Abstraction has 5201 states and 6484 transitions. [2024-11-20 00:08:39,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:08:39,785 INFO L276 IsEmpty]: Start isEmpty. Operand 5201 states and 6484 transitions. [2024-11-20 00:08:39,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-20 00:08:39,793 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:08:39,793 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] [2024-11-20 00:08:39,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-20 00:08:39,793 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:08:39,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:08:39,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1148366857, now seen corresponding path program 1 times [2024-11-20 00:08:39,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:08:39,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120107953] [2024-11-20 00:08:39,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:08:39,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:08:39,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:39,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:08:39,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:39,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 00:08:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:39,992 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-20 00:08:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:40,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-20 00:08:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:40,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-20 00:08:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:40,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:08:40,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:08:40,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120107953] [2024-11-20 00:08:40,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120107953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:08:40,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:08:40,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:08:40,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962145537] [2024-11-20 00:08:40,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:08:40,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:08:40,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:08:40,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:08:40,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:08:40,028 INFO L87 Difference]: Start difference. First operand 5201 states and 6484 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:08:42,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:08:42,231 INFO L93 Difference]: Finished difference Result 7174 states and 9496 transitions. [2024-11-20 00:08:42,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 00:08:42,231 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-20 00:08:42,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:08:42,247 INFO L225 Difference]: With dead ends: 7174 [2024-11-20 00:08:42,248 INFO L226 Difference]: Without dead ends: 6317 [2024-11-20 00:08:42,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-20 00:08:42,252 INFO L432 NwaCegarLoop]: 358 mSDtfsCounter, 880 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 1680 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 1765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-20 00:08:42,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 1549 Invalid, 1765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1680 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-20 00:08:42,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6317 states. [2024-11-20 00:08:42,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6317 to 5876. [2024-11-20 00:08:42,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5876 states, 4710 states have (on average 1.291507430997877) internal successors, (6083), 4785 states have internal predecessors, (6083), 590 states have call successors, (590), 445 states have call predecessors, (590), 574 states have return successors, (824), 659 states have call predecessors, (824), 587 states have call successors, (824) [2024-11-20 00:08:42,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5876 states to 5876 states and 7497 transitions. [2024-11-20 00:08:42,870 INFO L78 Accepts]: Start accepts. Automaton has 5876 states and 7497 transitions. Word has length 91 [2024-11-20 00:08:42,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:08:42,871 INFO L471 AbstractCegarLoop]: Abstraction has 5876 states and 7497 transitions. [2024-11-20 00:08:42,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:08:42,871 INFO L276 IsEmpty]: Start isEmpty. Operand 5876 states and 7497 transitions. [2024-11-20 00:08:42,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-20 00:08:42,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:08:42,875 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] [2024-11-20 00:08:42,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-20 00:08:42,875 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:08:42,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:08:42,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1071466059, now seen corresponding path program 1 times [2024-11-20 00:08:42,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:08:42,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576488449] [2024-11-20 00:08:42,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:08:42,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:08:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:42,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:08:42,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:42,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 00:08:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:42,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-20 00:08:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:42,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-20 00:08:42,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:42,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-20 00:08:42,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:42,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:08:42,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:08:42,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576488449] [2024-11-20 00:08:42,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576488449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:08:42,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:08:42,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:08:42,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530527384] [2024-11-20 00:08:42,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:08:42,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:08:42,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:08:42,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:08:42,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:08:42,988 INFO L87 Difference]: Start difference. First operand 5876 states and 7497 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:08:44,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:08:44,253 INFO L93 Difference]: Finished difference Result 7837 states and 10513 transitions. [2024-11-20 00:08:44,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 00:08:44,253 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-20 00:08:44,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:08:44,267 INFO L225 Difference]: With dead ends: 7837 [2024-11-20 00:08:44,268 INFO L226 Difference]: Without dead ends: 6305 [2024-11-20 00:08:44,271 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-20 00:08:44,272 INFO L432 NwaCegarLoop]: 219 mSDtfsCounter, 724 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-20 00:08:44,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 907 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-20 00:08:44,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6305 states. [2024-11-20 00:08:44,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6305 to 5876. [2024-11-20 00:08:44,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5876 states, 4710 states have (on average 1.289596602972399) internal successors, (6074), 4785 states have internal predecessors, (6074), 590 states have call successors, (590), 445 states have call predecessors, (590), 574 states have return successors, (824), 659 states have call predecessors, (824), 587 states have call successors, (824) [2024-11-20 00:08:44,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5876 states to 5876 states and 7488 transitions. [2024-11-20 00:08:44,840 INFO L78 Accepts]: Start accepts. Automaton has 5876 states and 7488 transitions. Word has length 91 [2024-11-20 00:08:44,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:08:44,840 INFO L471 AbstractCegarLoop]: Abstraction has 5876 states and 7488 transitions. [2024-11-20 00:08:44,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:08:44,840 INFO L276 IsEmpty]: Start isEmpty. Operand 5876 states and 7488 transitions. [2024-11-20 00:08:44,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-20 00:08:44,843 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:08:44,843 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] [2024-11-20 00:08:44,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-20 00:08:44,844 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:08:44,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:08:44,844 INFO L85 PathProgramCache]: Analyzing trace with hash 836991731, now seen corresponding path program 1 times [2024-11-20 00:08:44,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:08:44,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584696336] [2024-11-20 00:08:44,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:08:44,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:08:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:44,889 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:08:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:44,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 00:08:44,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:44,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-20 00:08:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:44,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-20 00:08:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:44,938 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-20 00:08:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:44,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:08:44,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:08:44,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584696336] [2024-11-20 00:08:44,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584696336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:08:44,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:08:44,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:08:44,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161751148] [2024-11-20 00:08:44,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:08:44,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:08:44,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:08:44,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:08:44,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:08:44,942 INFO L87 Difference]: Start difference. First operand 5876 states and 7488 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:08:46,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:08:46,138 INFO L93 Difference]: Finished difference Result 7827 states and 10466 transitions. [2024-11-20 00:08:46,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 00:08:46,139 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-20 00:08:46,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:08:46,156 INFO L225 Difference]: With dead ends: 7827 [2024-11-20 00:08:46,156 INFO L226 Difference]: Without dead ends: 6295 [2024-11-20 00:08:46,160 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-20 00:08:46,161 INFO L432 NwaCegarLoop]: 219 mSDtfsCounter, 845 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 00:08:46,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 749 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 00:08:46,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6295 states. [2024-11-20 00:08:46,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6295 to 5876. [2024-11-20 00:08:46,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5876 states, 4710 states have (on average 1.2876857749469215) internal successors, (6065), 4785 states have internal predecessors, (6065), 590 states have call successors, (590), 445 states have call predecessors, (590), 574 states have return successors, (824), 659 states have call predecessors, (824), 587 states have call successors, (824) [2024-11-20 00:08:46,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5876 states to 5876 states and 7479 transitions. [2024-11-20 00:08:46,926 INFO L78 Accepts]: Start accepts. Automaton has 5876 states and 7479 transitions. Word has length 91 [2024-11-20 00:08:46,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:08:46,927 INFO L471 AbstractCegarLoop]: Abstraction has 5876 states and 7479 transitions. [2024-11-20 00:08:46,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:08:46,927 INFO L276 IsEmpty]: Start isEmpty. Operand 5876 states and 7479 transitions. [2024-11-20 00:08:46,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-20 00:08:46,931 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:08:46,931 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] [2024-11-20 00:08:46,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-20 00:08:46,931 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:08:46,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:08:46,932 INFO L85 PathProgramCache]: Analyzing trace with hash 344365557, now seen corresponding path program 1 times [2024-11-20 00:08:46,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:08:46,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263783520] [2024-11-20 00:08:46,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:08:46,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:08:46,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:46,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:08:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:46,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 00:08:46,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:47,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-20 00:08:47,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:47,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-20 00:08:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:47,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-20 00:08:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:47,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:08:47,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:08:47,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263783520] [2024-11-20 00:08:47,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263783520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:08:47,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:08:47,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:08:47,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097992810] [2024-11-20 00:08:47,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:08:47,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:08:47,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:08:47,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:08:47,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:08:47,047 INFO L87 Difference]: Start difference. First operand 5876 states and 7479 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:08:49,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:08:49,097 INFO L93 Difference]: Finished difference Result 9703 states and 13245 transitions. [2024-11-20 00:08:49,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 00:08:49,097 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-20 00:08:49,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:08:49,118 INFO L225 Difference]: With dead ends: 9703 [2024-11-20 00:08:49,118 INFO L226 Difference]: Without dead ends: 8171 [2024-11-20 00:08:49,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-20 00:08:49,126 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 919 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 1595 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-20 00:08:49,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 1539 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1595 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-20 00:08:49,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8171 states. [2024-11-20 00:08:49,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8171 to 7233. [2024-11-20 00:08:49,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7233 states, 5915 states have (on average 1.3269653423499577) internal successors, (7849), 5998 states have internal predecessors, (7849), 686 states have call successors, (686), 493 states have call predecessors, (686), 630 states have return successors, (982), 763 states have call predecessors, (982), 683 states have call successors, (982) [2024-11-20 00:08:49,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7233 states to 7233 states and 9517 transitions. [2024-11-20 00:08:49,885 INFO L78 Accepts]: Start accepts. Automaton has 7233 states and 9517 transitions. Word has length 91 [2024-11-20 00:08:49,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:08:49,885 INFO L471 AbstractCegarLoop]: Abstraction has 7233 states and 9517 transitions. [2024-11-20 00:08:49,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:08:49,886 INFO L276 IsEmpty]: Start isEmpty. Operand 7233 states and 9517 transitions. [2024-11-20 00:08:49,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-20 00:08:49,889 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:08:49,889 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] [2024-11-20 00:08:49,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-20 00:08:49,889 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:08:49,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:08:49,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1298305715, now seen corresponding path program 1 times [2024-11-20 00:08:49,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:08:49,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559219259] [2024-11-20 00:08:49,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:08:49,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:08:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:49,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:08:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:49,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 00:08:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:50,007 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-20 00:08:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:50,012 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-20 00:08:50,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:50,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-20 00:08:50,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:50,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:08:50,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:08:50,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559219259] [2024-11-20 00:08:50,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559219259] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:08:50,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:08:50,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:08:50,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315199633] [2024-11-20 00:08:50,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:08:50,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:08:50,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:08:50,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:08:50,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:08:50,016 INFO L87 Difference]: Start difference. First operand 7233 states and 9517 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:08:52,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:08:52,069 INFO L93 Difference]: Finished difference Result 14316 states and 20225 transitions. [2024-11-20 00:08:52,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 00:08:52,069 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-20 00:08:52,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:08:52,100 INFO L225 Difference]: With dead ends: 14316 [2024-11-20 00:08:52,100 INFO L226 Difference]: Without dead ends: 11427 [2024-11-20 00:08:52,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-20 00:08:52,111 INFO L432 NwaCegarLoop]: 246 mSDtfsCounter, 923 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-20 00:08:52,111 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 1107 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-20 00:08:52,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11427 states. [2024-11-20 00:08:53,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11427 to 9932. [2024-11-20 00:08:53,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9932 states, 8318 states have (on average 1.3718441933157008) internal successors, (11411), 8417 states have internal predecessors, (11411), 870 states have call successors, (870), 589 states have call predecessors, (870), 742 states have return successors, (1344), 963 states have call predecessors, (1344), 867 states have call successors, (1344) [2024-11-20 00:08:53,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9932 states to 9932 states and 13625 transitions. [2024-11-20 00:08:53,066 INFO L78 Accepts]: Start accepts. Automaton has 9932 states and 13625 transitions. Word has length 91 [2024-11-20 00:08:53,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:08:53,066 INFO L471 AbstractCegarLoop]: Abstraction has 9932 states and 13625 transitions. [2024-11-20 00:08:53,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:08:53,067 INFO L276 IsEmpty]: Start isEmpty. Operand 9932 states and 13625 transitions. [2024-11-20 00:08:53,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-20 00:08:53,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:08:53,073 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] [2024-11-20 00:08:53,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-20 00:08:53,073 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:08:53,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:08:53,074 INFO L85 PathProgramCache]: Analyzing trace with hash 82151989, now seen corresponding path program 1 times [2024-11-20 00:08:53,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:08:53,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86478329] [2024-11-20 00:08:53,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:08:53,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:08:53,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:53,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:08:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:53,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 00:08:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:53,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-20 00:08:53,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:53,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-20 00:08:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:53,152 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-20 00:08:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:53,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:08:53,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:08:53,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86478329] [2024-11-20 00:08:53,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86478329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:08:53,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:08:53,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:08:53,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771193183] [2024-11-20 00:08:53,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:08:53,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:08:53,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:08:53,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:08:53,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:08:53,155 INFO L87 Difference]: Start difference. First operand 9932 states and 13625 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:08:54,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:08:54,700 INFO L93 Difference]: Finished difference Result 16821 states and 24172 transitions. [2024-11-20 00:08:54,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 00:08:54,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-20 00:08:54,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:08:54,732 INFO L225 Difference]: With dead ends: 16821 [2024-11-20 00:08:54,732 INFO L226 Difference]: Without dead ends: 11234 [2024-11-20 00:08:54,745 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-20 00:08:54,747 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 325 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 1197 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 00:08:54,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 1234 Invalid, 1267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1197 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 00:08:54,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11234 states. [2024-11-20 00:08:55,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11234 to 10031. [2024-11-20 00:08:55,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10031 states, 8417 states have (on average 1.3674705952239514) internal successors, (11510), 8516 states have internal predecessors, (11510), 870 states have call successors, (870), 589 states have call predecessors, (870), 742 states have return successors, (1344), 963 states have call predecessors, (1344), 867 states have call successors, (1344) [2024-11-20 00:08:55,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10031 states to 10031 states and 13724 transitions. [2024-11-20 00:08:55,992 INFO L78 Accepts]: Start accepts. Automaton has 10031 states and 13724 transitions. Word has length 91 [2024-11-20 00:08:55,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:08:55,993 INFO L471 AbstractCegarLoop]: Abstraction has 10031 states and 13724 transitions. [2024-11-20 00:08:55,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:08:55,993 INFO L276 IsEmpty]: Start isEmpty. Operand 10031 states and 13724 transitions. [2024-11-20 00:08:55,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-20 00:08:55,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:08:55,998 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] [2024-11-20 00:08:55,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-20 00:08:55,998 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:08:55,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:08:55,999 INFO L85 PathProgramCache]: Analyzing trace with hash 515881075, now seen corresponding path program 1 times [2024-11-20 00:08:55,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:08:55,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600516211] [2024-11-20 00:08:55,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:08:55,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:08:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:56,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:08:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:56,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 00:08:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:56,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-20 00:08:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:56,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-20 00:08:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:56,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-20 00:08:56,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:56,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:08:56,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:08:56,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600516211] [2024-11-20 00:08:56,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600516211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:08:56,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:08:56,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 00:08:56,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068212221] [2024-11-20 00:08:56,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:08:56,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 00:08:56,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:08:56,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 00:08:56,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 00:08:56,064 INFO L87 Difference]: Start difference. First operand 10031 states and 13724 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:08:58,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:08:58,128 INFO L93 Difference]: Finished difference Result 23610 states and 34152 transitions. [2024-11-20 00:08:58,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 00:08:58,129 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-20 00:08:58,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:08:58,170 INFO L225 Difference]: With dead ends: 23610 [2024-11-20 00:08:58,170 INFO L226 Difference]: Without dead ends: 17924 [2024-11-20 00:08:58,187 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-20 00:08:58,187 INFO L432 NwaCegarLoop]: 402 mSDtfsCounter, 1129 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 1298 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-20 00:08:58,187 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1167 Valid, 1190 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1298 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-20 00:08:58,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17924 states. [2024-11-20 00:08:59,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17924 to 15481. [2024-11-20 00:08:59,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15481 states, 13272 states have (on average 1.4034056660638938) internal successors, (18626), 13403 states have internal predecessors, (18626), 1235 states have call successors, (1235), 787 states have call predecessors, (1235), 972 states have return successors, (1953), 1328 states have call predecessors, (1953), 1232 states have call successors, (1953) [2024-11-20 00:08:59,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15481 states to 15481 states and 21814 transitions. [2024-11-20 00:08:59,370 INFO L78 Accepts]: Start accepts. Automaton has 15481 states and 21814 transitions. Word has length 91 [2024-11-20 00:08:59,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:08:59,370 INFO L471 AbstractCegarLoop]: Abstraction has 15481 states and 21814 transitions. [2024-11-20 00:08:59,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:08:59,371 INFO L276 IsEmpty]: Start isEmpty. Operand 15481 states and 21814 transitions. [2024-11-20 00:08:59,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-20 00:08:59,375 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:08:59,375 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] [2024-11-20 00:08:59,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-20 00:08:59,376 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:08:59,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:08:59,376 INFO L85 PathProgramCache]: Analyzing trace with hash 523631634, now seen corresponding path program 1 times [2024-11-20 00:08:59,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:08:59,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288825021] [2024-11-20 00:08:59,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:08:59,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:08:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:59,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:08:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:59,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 00:08:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:59,450 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-20 00:08:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:59,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-20 00:08:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:59,492 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-20 00:08:59,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:08:59,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:08:59,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:08:59,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288825021] [2024-11-20 00:08:59,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288825021] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:08:59,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:08:59,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:08:59,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200125369] [2024-11-20 00:08:59,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:08:59,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:08:59,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:08:59,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:08:59,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:08:59,498 INFO L87 Difference]: Start difference. First operand 15481 states and 21814 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:09:01,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:09:01,603 INFO L93 Difference]: Finished difference Result 29188 states and 42505 transitions. [2024-11-20 00:09:01,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 00:09:01,604 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-20 00:09:01,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:09:01,650 INFO L225 Difference]: With dead ends: 29188 [2024-11-20 00:09:01,651 INFO L226 Difference]: Without dead ends: 18052 [2024-11-20 00:09:01,672 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-11-20 00:09:01,672 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 338 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-20 00:09:01,673 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 1234 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-20 00:09:01,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18052 states. [2024-11-20 00:09:02,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18052 to 15580. [2024-11-20 00:09:02,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15580 states, 13371 states have (on average 1.3979507890210157) internal successors, (18692), 13502 states have internal predecessors, (18692), 1235 states have call successors, (1235), 787 states have call predecessors, (1235), 972 states have return successors, (1953), 1328 states have call predecessors, (1953), 1232 states have call successors, (1953) [2024-11-20 00:09:02,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15580 states to 15580 states and 21880 transitions. [2024-11-20 00:09:02,916 INFO L78 Accepts]: Start accepts. Automaton has 15580 states and 21880 transitions. Word has length 91 [2024-11-20 00:09:02,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:09:02,916 INFO L471 AbstractCegarLoop]: Abstraction has 15580 states and 21880 transitions. [2024-11-20 00:09:02,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:09:02,917 INFO L276 IsEmpty]: Start isEmpty. Operand 15580 states and 21880 transitions. [2024-11-20 00:09:02,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-20 00:09:02,921 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:09:02,921 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] [2024-11-20 00:09:02,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-20 00:09:02,921 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:09:02,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:09:02,921 INFO L85 PathProgramCache]: Analyzing trace with hash 2061971664, now seen corresponding path program 1 times [2024-11-20 00:09:02,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:09:02,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603883142] [2024-11-20 00:09:02,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:09:02,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:09:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:02,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:09:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:02,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 00:09:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:02,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-20 00:09:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:03,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-20 00:09:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:03,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-20 00:09:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:03,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:09:03,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:09:03,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603883142] [2024-11-20 00:09:03,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603883142] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:09:03,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:09:03,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:09:03,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704833267] [2024-11-20 00:09:03,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:09:03,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:09:03,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:09:03,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:09:03,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:09:03,033 INFO L87 Difference]: Start difference. First operand 15580 states and 21880 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:09:04,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:09:04,976 INFO L93 Difference]: Finished difference Result 29683 states and 42967 transitions. [2024-11-20 00:09:04,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 00:09:04,977 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-20 00:09:04,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:09:05,025 INFO L225 Difference]: With dead ends: 29683 [2024-11-20 00:09:05,025 INFO L226 Difference]: Without dead ends: 18448 [2024-11-20 00:09:05,045 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-11-20 00:09:05,046 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 348 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 00:09:05,046 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 1234 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 00:09:05,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18448 states. [2024-11-20 00:09:06,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18448 to 15778. [2024-11-20 00:09:06,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15778 states, 13569 states have (on average 1.3921438573218365) internal successors, (18890), 13700 states have internal predecessors, (18890), 1235 states have call successors, (1235), 787 states have call predecessors, (1235), 972 states have return successors, (1953), 1328 states have call predecessors, (1953), 1232 states have call successors, (1953) [2024-11-20 00:09:06,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15778 states to 15778 states and 22078 transitions. [2024-11-20 00:09:06,345 INFO L78 Accepts]: Start accepts. Automaton has 15778 states and 22078 transitions. Word has length 91 [2024-11-20 00:09:06,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:09:06,346 INFO L471 AbstractCegarLoop]: Abstraction has 15778 states and 22078 transitions. [2024-11-20 00:09:06,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:09:06,346 INFO L276 IsEmpty]: Start isEmpty. Operand 15778 states and 22078 transitions. [2024-11-20 00:09:06,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-20 00:09:06,351 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:09:06,351 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] [2024-11-20 00:09:06,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-20 00:09:06,351 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:09:06,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:09:06,351 INFO L85 PathProgramCache]: Analyzing trace with hash -304722930, now seen corresponding path program 1 times [2024-11-20 00:09:06,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:09:06,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101517828] [2024-11-20 00:09:06,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:09:06,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:09:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:06,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:09:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:06,391 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 00:09:06,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:06,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-20 00:09:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:06,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-20 00:09:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:06,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-20 00:09:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:06,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:09:06,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:09:06,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101517828] [2024-11-20 00:09:06,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101517828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:09:06,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:09:06,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 00:09:06,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517865275] [2024-11-20 00:09:06,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:09:06,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 00:09:06,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:09:06,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 00:09:06,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 00:09:06,419 INFO L87 Difference]: Start difference. First operand 15778 states and 22078 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:09:09,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:09:09,774 INFO L93 Difference]: Finished difference Result 43683 states and 63050 transitions. [2024-11-20 00:09:09,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 00:09:09,775 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-20 00:09:09,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:09:09,850 INFO L225 Difference]: With dead ends: 43683 [2024-11-20 00:09:09,851 INFO L226 Difference]: Without dead ends: 32250 [2024-11-20 00:09:09,874 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-20 00:09:09,874 INFO L432 NwaCegarLoop]: 402 mSDtfsCounter, 1221 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1259 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-20 00:09:09,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1259 Valid, 1190 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-20 00:09:09,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32250 states. [2024-11-20 00:09:11,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32250 to 26840. [2024-11-20 00:09:11,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26840 states, 23442 states have (on average 1.4128487330432558) internal successors, (33120), 23637 states have internal predecessors, (33120), 1964 states have call successors, (1964), 1183 states have call predecessors, (1964), 1432 states have return successors, (3170), 2057 states have call predecessors, (3170), 1961 states have call successors, (3170) [2024-11-20 00:09:11,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26840 states to 26840 states and 38254 transitions. [2024-11-20 00:09:11,833 INFO L78 Accepts]: Start accepts. Automaton has 26840 states and 38254 transitions. Word has length 91 [2024-11-20 00:09:11,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:09:11,833 INFO L471 AbstractCegarLoop]: Abstraction has 26840 states and 38254 transitions. [2024-11-20 00:09:11,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:09:11,833 INFO L276 IsEmpty]: Start isEmpty. Operand 26840 states and 38254 transitions. [2024-11-20 00:09:11,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-20 00:09:11,838 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:09:11,838 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] [2024-11-20 00:09:11,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-20 00:09:11,839 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:09:11,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:09:11,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1579825619, now seen corresponding path program 1 times [2024-11-20 00:09:11,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:09:11,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526479058] [2024-11-20 00:09:11,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:09:11,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:09:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:11,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:09:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:11,877 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 00:09:11,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:11,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-20 00:09:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:11,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-20 00:09:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:11,919 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-20 00:09:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:11,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:09:11,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:09:11,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526479058] [2024-11-20 00:09:11,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526479058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:09:11,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:09:11,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:09:11,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260305418] [2024-11-20 00:09:11,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:09:11,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:09:11,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:09:11,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:09:11,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:09:11,922 INFO L87 Difference]: Start difference. First operand 26840 states and 38254 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:09:14,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:09:14,922 INFO L93 Difference]: Finished difference Result 55005 states and 79722 transitions. [2024-11-20 00:09:14,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 00:09:14,923 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-20 00:09:14,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:09:15,000 INFO L225 Difference]: With dead ends: 55005 [2024-11-20 00:09:15,000 INFO L226 Difference]: Without dead ends: 32510 [2024-11-20 00:09:15,034 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-11-20 00:09:15,035 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 358 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-20 00:09:15,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 1234 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-20 00:09:15,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32510 states. [2024-11-20 00:09:17,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32510 to 27038. [2024-11-20 00:09:17,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27038 states, 23640 states have (on average 1.4065989847715736) internal successors, (33252), 23835 states have internal predecessors, (33252), 1964 states have call successors, (1964), 1183 states have call predecessors, (1964), 1432 states have return successors, (3170), 2057 states have call predecessors, (3170), 1961 states have call successors, (3170) [2024-11-20 00:09:17,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27038 states to 27038 states and 38386 transitions. [2024-11-20 00:09:17,322 INFO L78 Accepts]: Start accepts. Automaton has 27038 states and 38386 transitions. Word has length 91 [2024-11-20 00:09:17,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:09:17,322 INFO L471 AbstractCegarLoop]: Abstraction has 27038 states and 38386 transitions. [2024-11-20 00:09:17,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:09:17,323 INFO L276 IsEmpty]: Start isEmpty. Operand 27038 states and 38386 transitions. [2024-11-20 00:09:17,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-20 00:09:17,327 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:09:17,327 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] [2024-11-20 00:09:17,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-20 00:09:17,328 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:09:17,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:09:17,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1343334379, now seen corresponding path program 1 times [2024-11-20 00:09:17,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:09:17,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277886114] [2024-11-20 00:09:17,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:09:17,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:09:17,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:17,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:09:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:17,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 00:09:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:17,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-20 00:09:17,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:17,385 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-20 00:09:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:17,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-20 00:09:17,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:17,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:09:17,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:09:17,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277886114] [2024-11-20 00:09:17,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277886114] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:09:17,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:09:17,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 00:09:17,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246920702] [2024-11-20 00:09:17,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:09:17,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 00:09:17,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:09:17,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 00:09:17,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 00:09:17,390 INFO L87 Difference]: Start difference. First operand 27038 states and 38386 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:09:22,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:09:22,099 INFO L93 Difference]: Finished difference Result 82575 states and 118605 transitions. [2024-11-20 00:09:22,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 00:09:22,099 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-20 00:09:22,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:09:22,250 INFO L225 Difference]: With dead ends: 82575 [2024-11-20 00:09:22,250 INFO L226 Difference]: Without dead ends: 59882 [2024-11-20 00:09:22,292 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-20 00:09:22,293 INFO L432 NwaCegarLoop]: 402 mSDtfsCounter, 1267 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-20 00:09:22,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1305 Valid, 1190 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-20 00:09:22,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59882 states. [2024-11-20 00:09:25,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59882 to 48802. [2024-11-20 00:09:25,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48802 states, 43124 states have (on average 1.417308227437158) internal successors, (61120), 43447 states have internal predecessors, (61120), 3324 states have call successors, (3324), 1975 states have call predecessors, (3324), 2352 states have return successors, (5506), 3417 states have call predecessors, (5506), 3321 states have call successors, (5506) [2024-11-20 00:09:25,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48802 states to 48802 states and 69950 transitions. [2024-11-20 00:09:25,964 INFO L78 Accepts]: Start accepts. Automaton has 48802 states and 69950 transitions. Word has length 91 [2024-11-20 00:09:25,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:09:25,964 INFO L471 AbstractCegarLoop]: Abstraction has 48802 states and 69950 transitions. [2024-11-20 00:09:25,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:09:25,964 INFO L276 IsEmpty]: Start isEmpty. Operand 48802 states and 69950 transitions. [2024-11-20 00:09:25,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-20 00:09:25,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:09:25,970 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] [2024-11-20 00:09:25,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-20 00:09:25,970 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:09:25,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:09:25,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1866655050, now seen corresponding path program 1 times [2024-11-20 00:09:25,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:09:25,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932637804] [2024-11-20 00:09:25,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:09:25,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:09:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:26,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:09:26,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:26,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 00:09:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:26,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-20 00:09:26,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:26,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-20 00:09:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:26,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-20 00:09:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:26,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:09:26,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:09:26,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932637804] [2024-11-20 00:09:26,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932637804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:09:26,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:09:26,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:09:26,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028372190] [2024-11-20 00:09:26,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:09:26,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:09:26,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:09:26,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:09:26,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:09:26,215 INFO L87 Difference]: Start difference. First operand 48802 states and 69950 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:09:31,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:09:31,401 INFO L93 Difference]: Finished difference Result 104863 states and 151130 transitions. [2024-11-20 00:09:31,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 00:09:31,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-20 00:09:31,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:09:31,593 INFO L225 Difference]: With dead ends: 104863 [2024-11-20 00:09:31,593 INFO L226 Difference]: Without dead ends: 60406 [2024-11-20 00:09:31,675 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-11-20 00:09:31,676 INFO L432 NwaCegarLoop]: 252 mSDtfsCounter, 360 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-20 00:09:31,676 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 1229 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-20 00:09:31,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60406 states. [2024-11-20 00:09:35,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60406 to 49198. [2024-11-20 00:09:35,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49198 states, 43520 states have (on average 1.4104779411764705) internal successors, (61384), 43843 states have internal predecessors, (61384), 3324 states have call successors, (3324), 1975 states have call predecessors, (3324), 2352 states have return successors, (5506), 3417 states have call predecessors, (5506), 3321 states have call successors, (5506) [2024-11-20 00:09:36,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49198 states to 49198 states and 70214 transitions. [2024-11-20 00:09:36,054 INFO L78 Accepts]: Start accepts. Automaton has 49198 states and 70214 transitions. Word has length 91 [2024-11-20 00:09:36,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:09:36,055 INFO L471 AbstractCegarLoop]: Abstraction has 49198 states and 70214 transitions. [2024-11-20 00:09:36,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:09:36,055 INFO L276 IsEmpty]: Start isEmpty. Operand 49198 states and 70214 transitions. [2024-11-20 00:09:36,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-20 00:09:36,059 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:09:36,060 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] [2024-11-20 00:09:36,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-20 00:09:36,060 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:09:36,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:09:36,061 INFO L85 PathProgramCache]: Analyzing trace with hash -377328248, now seen corresponding path program 1 times [2024-11-20 00:09:36,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:09:36,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17969118] [2024-11-20 00:09:36,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:09:36,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:09:36,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:36,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:09:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:36,188 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 00:09:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:36,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-20 00:09:36,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:36,226 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-20 00:09:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:36,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-20 00:09:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:09:36,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:09:36,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:09:36,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17969118] [2024-11-20 00:09:36,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17969118] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:09:36,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:09:36,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 00:09:36,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173642948] [2024-11-20 00:09:36,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:09:36,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 00:09:36,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:09:36,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 00:09:36,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-20 00:09:36,268 INFO L87 Difference]: Start difference. First operand 49198 states and 70214 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)