./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.13.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.13.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ce176716d91d866602a372020396224af9fcf4c5f81c6adcdcc0f1d83b0d658f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 16:19:31,302 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 16:19:31,396 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 16:19:31,401 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 16:19:31,401 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 16:19:31,421 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 16:19:31,422 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 16:19:31,423 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 16:19:31,423 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 16:19:31,424 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 16:19:31,424 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 16:19:31,424 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 16:19:31,425 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 16:19:31,430 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 16:19:31,430 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 16:19:31,431 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 16:19:31,431 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 16:19:31,431 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 16:19:31,432 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 16:19:31,432 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 16:19:31,432 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 16:19:31,433 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 16:19:31,434 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 16:19:31,434 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 16:19:31,434 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 16:19:31,435 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 16:19:31,435 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 16:19:31,435 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 16:19:31,436 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 16:19:31,436 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 16:19:31,436 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 16:19:31,436 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 16:19:31,436 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 16:19:31,437 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 16:19:31,437 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 16:19:31,438 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 16:19:31,438 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 16:19:31,438 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 16:19:31,438 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 16:19:31,439 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 16:19:31,439 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 16:19:31,439 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 16:19:31,439 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce176716d91d866602a372020396224af9fcf4c5f81c6adcdcc0f1d83b0d658f [2024-11-18 16:19:31,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 16:19:31,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 16:19:31,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 16:19:31,754 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 16:19:31,755 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 16:19:31,756 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.13.cil-1.c [2024-11-18 16:19:33,260 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 16:19:33,542 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 16:19:33,543 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.13.cil-1.c [2024-11-18 16:19:33,565 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1f28604f/de491e2a067a42288821d5aa1a89cc20/FLAG29e8a2843 [2024-11-18 16:19:33,585 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1f28604f/de491e2a067a42288821d5aa1a89cc20 [2024-11-18 16:19:33,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 16:19:33,589 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 16:19:33,591 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 16:19:33,591 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 16:19:33,596 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 16:19:33,597 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:19:33" (1/1) ... [2024-11-18 16:19:33,598 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45f162cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:19:33, skipping insertion in model container [2024-11-18 16:19:33,598 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:19:33" (1/1) ... [2024-11-18 16:19:33,655 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 16:19:33,860 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.13.cil-1.c[914,927] [2024-11-18 16:19:34,039 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.13.cil-1.c[7115,7128] [2024-11-18 16:19:34,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 16:19:34,177 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 16:19:34,190 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.13.cil-1.c[914,927] [2024-11-18 16:19:34,205 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.13.cil-1.c[7115,7128] [2024-11-18 16:19:34,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 16:19:34,300 INFO L204 MainTranslator]: Completed translation [2024-11-18 16:19:34,300 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:19:34 WrapperNode [2024-11-18 16:19:34,301 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 16:19:34,302 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 16:19:34,303 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 16:19:34,303 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 16:19:34,311 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:19:34" (1/1) ... [2024-11-18 16:19:34,332 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:19:34" (1/1) ... [2024-11-18 16:19:34,384 INFO L138 Inliner]: procedures = 79, calls = 97, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 1134 [2024-11-18 16:19:34,385 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 16:19:34,386 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 16:19:34,386 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 16:19:34,386 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 16:19:34,408 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:19:34" (1/1) ... [2024-11-18 16:19:34,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:19:34" (1/1) ... [2024-11-18 16:19:34,413 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:19:34" (1/1) ... [2024-11-18 16:19:34,443 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]. [2024-11-18 16:19:34,443 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:19:34" (1/1) ... [2024-11-18 16:19:34,444 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:19:34" (1/1) ... [2024-11-18 16:19:34,459 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:19:34" (1/1) ... [2024-11-18 16:19:34,473 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:19:34" (1/1) ... [2024-11-18 16:19:34,476 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:19:34" (1/1) ... [2024-11-18 16:19:34,480 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:19:34" (1/1) ... [2024-11-18 16:19:34,493 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 16:19:34,494 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 16:19:34,498 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 16:19:34,498 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 16:19:34,500 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:19:34" (1/1) ... [2024-11-18 16:19:34,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 16:19:34,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:19:34,542 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) [2024-11-18 16:19:34,548 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 [2024-11-18 16:19:34,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 16:19:34,597 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-18 16:19:34,597 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-18 16:19:34,597 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-11-18 16:19:34,598 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-11-18 16:19:34,599 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-18 16:19:34,599 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-18 16:19:34,599 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-18 16:19:34,599 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-18 16:19:34,599 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-11-18 16:19:34,599 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-11-18 16:19:34,599 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-18 16:19:34,600 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-18 16:19:34,600 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-18 16:19:34,600 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-18 16:19:34,600 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-11-18 16:19:34,600 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-11-18 16:19:34,601 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-11-18 16:19:34,601 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-11-18 16:19:34,601 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-11-18 16:19:34,601 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-11-18 16:19:34,601 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-18 16:19:34,602 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-18 16:19:34,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 16:19:34,602 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-18 16:19:34,602 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-18 16:19:34,602 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-11-18 16:19:34,602 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-11-18 16:19:34,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 16:19:34,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 16:19:34,603 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-18 16:19:34,603 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-18 16:19:34,603 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-11-18 16:19:34,604 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-11-18 16:19:34,765 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 16:19:34,767 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 16:19:35,932 INFO L? ?]: Removed 137 outVars from TransFormulas that were not future-live. [2024-11-18 16:19:35,933 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 16:19:35,970 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 16:19:35,973 INFO L316 CfgBuilder]: Removed 20 assume(true) statements. [2024-11-18 16:19:35,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:19:35 BoogieIcfgContainer [2024-11-18 16:19:35,974 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 16:19:35,976 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 16:19:35,976 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 16:19:35,979 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 16:19:35,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:19:33" (1/3) ... [2024-11-18 16:19:35,980 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6793ed44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:19:35, skipping insertion in model container [2024-11-18 16:19:35,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:19:34" (2/3) ... [2024-11-18 16:19:35,980 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6793ed44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:19:35, skipping insertion in model container [2024-11-18 16:19:35,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:19:35" (3/3) ... [2024-11-18 16:19:35,982 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.13.cil-1.c [2024-11-18 16:19:35,998 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 16:19:35,999 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-18 16:19:36,092 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 16:19:36,100 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;@405d87f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 16:19:36,100 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-18 16:19:36,109 INFO L276 IsEmpty]: Start isEmpty. Operand has 530 states, 469 states have (on average 1.628997867803838) internal successors, (764), 477 states have internal predecessors, (764), 43 states have call successors, (43), 15 states have call predecessors, (43), 15 states have return successors, (43), 41 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-18 16:19:36,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:19:36,122 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:36,123 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] [2024-11-18 16:19:36,123 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:36,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:36,129 INFO L85 PathProgramCache]: Analyzing trace with hash 778583530, now seen corresponding path program 1 times [2024-11-18 16:19:36,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:36,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133918468] [2024-11-18 16:19:36,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:36,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:36,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:36,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:36,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133918468] [2024-11-18 16:19:36,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133918468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:36,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:36,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:19:36,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177205799] [2024-11-18 16:19:36,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:36,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:19:36,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:36,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:19:36,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:19:36,729 INFO L87 Difference]: Start difference. First operand has 530 states, 469 states have (on average 1.628997867803838) internal successors, (764), 477 states have internal predecessors, (764), 43 states have call successors, (43), 15 states have call predecessors, (43), 15 states have return successors, (43), 41 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:19:37,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:37,941 INFO L93 Difference]: Finished difference Result 1133 states and 1810 transitions. [2024-11-18 16:19:37,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:19:37,945 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-11-18 16:19:37,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:37,967 INFO L225 Difference]: With dead ends: 1133 [2024-11-18 16:19:37,968 INFO L226 Difference]: Without dead ends: 622 [2024-11-18 16:19:37,979 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:19:37,982 INFO L432 NwaCegarLoop]: 477 mSDtfsCounter, 501 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:37,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 1711 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 16:19:38,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2024-11-18 16:19:38,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 615. [2024-11-18 16:19:38,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 537 states have (on average 1.5214152700186219) internal successors, (817), 544 states have internal predecessors, (817), 54 states have call successors, (54), 22 states have call predecessors, (54), 22 states have return successors, (55), 51 states have call predecessors, (55), 50 states have call successors, (55) [2024-11-18 16:19:38,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 926 transitions. [2024-11-18 16:19:38,095 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 926 transitions. Word has length 65 [2024-11-18 16:19:38,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:38,095 INFO L471 AbstractCegarLoop]: Abstraction has 615 states and 926 transitions. [2024-11-18 16:19:38,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:19:38,096 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 926 transitions. [2024-11-18 16:19:38,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:19:38,102 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:38,102 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] [2024-11-18 16:19:38,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 16:19:38,102 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:38,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:38,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1837495126, now seen corresponding path program 1 times [2024-11-18 16:19:38,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:38,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806594025] [2024-11-18 16:19:38,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:38,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:38,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:38,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:38,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:38,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806594025] [2024-11-18 16:19:38,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806594025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:38,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:38,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:19:38,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662620243] [2024-11-18 16:19:38,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:38,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:19:38,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:38,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:19:38,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:19:38,247 INFO L87 Difference]: Start difference. First operand 615 states and 926 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:19:38,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:38,326 INFO L93 Difference]: Finished difference Result 797 states and 1174 transitions. [2024-11-18 16:19:38,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:19:38,327 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2024-11-18 16:19:38,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:38,333 INFO L225 Difference]: With dead ends: 797 [2024-11-18 16:19:38,333 INFO L226 Difference]: Without dead ends: 620 [2024-11-18 16:19:38,334 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:19:38,336 INFO L432 NwaCegarLoop]: 791 mSDtfsCounter, 0 mSDsluCounter, 3159 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3950 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:38,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3950 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:19:38,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2024-11-18 16:19:38,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 620. [2024-11-18 16:19:38,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 541 states have (on average 1.5157116451016637) internal successors, (820), 548 states have internal predecessors, (820), 54 states have call successors, (54), 22 states have call predecessors, (54), 23 states have return successors, (56), 52 states have call predecessors, (56), 50 states have call successors, (56) [2024-11-18 16:19:38,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 930 transitions. [2024-11-18 16:19:38,391 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 930 transitions. Word has length 65 [2024-11-18 16:19:38,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:38,392 INFO L471 AbstractCegarLoop]: Abstraction has 620 states and 930 transitions. [2024-11-18 16:19:38,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:19:38,393 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 930 transitions. [2024-11-18 16:19:38,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:19:38,398 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:38,398 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] [2024-11-18 16:19:38,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 16:19:38,399 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:38,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:38,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1428112872, now seen corresponding path program 1 times [2024-11-18 16:19:38,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:38,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918068644] [2024-11-18 16:19:38,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:38,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:38,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:38,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:38,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918068644] [2024-11-18 16:19:38,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918068644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:38,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:38,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:19:38,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222511022] [2024-11-18 16:19:38,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:38,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:19:38,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:38,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:19:38,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:19:38,541 INFO L87 Difference]: Start difference. First operand 620 states and 930 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-18 16:19:39,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:39,196 INFO L93 Difference]: Finished difference Result 1963 states and 2773 transitions. [2024-11-18 16:19:39,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:19:39,197 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2024-11-18 16:19:39,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:39,208 INFO L225 Difference]: With dead ends: 1963 [2024-11-18 16:19:39,208 INFO L226 Difference]: Without dead ends: 1781 [2024-11-18 16:19:39,210 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-18 16:19:39,212 INFO L432 NwaCegarLoop]: 1012 mSDtfsCounter, 2119 mSDsluCounter, 1938 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2125 SdHoareTripleChecker+Valid, 2950 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:39,213 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2125 Valid, 2950 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 16:19:39,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2024-11-18 16:19:39,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1667. [2024-11-18 16:19:39,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1366 states have (on average 1.4026354319180088) internal successors, (1916), 1387 states have internal predecessors, (1916), 164 states have call successors, (164), 118 states have call predecessors, (164), 135 states have return successors, (220), 164 states have call predecessors, (220), 160 states have call successors, (220) [2024-11-18 16:19:39,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2300 transitions. [2024-11-18 16:19:39,349 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2300 transitions. Word has length 65 [2024-11-18 16:19:39,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:39,351 INFO L471 AbstractCegarLoop]: Abstraction has 1667 states and 2300 transitions. [2024-11-18 16:19:39,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-18 16:19:39,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2300 transitions. [2024-11-18 16:19:39,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:19:39,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:39,353 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] [2024-11-18 16:19:39,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 16:19:39,355 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:39,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:39,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1815405335, now seen corresponding path program 1 times [2024-11-18 16:19:39,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:39,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711076662] [2024-11-18 16:19:39,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:39,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:39,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:39,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:39,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:39,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711076662] [2024-11-18 16:19:39,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711076662] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:39,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:39,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:19:39,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861420342] [2024-11-18 16:19:39,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:39,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:19:39,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:39,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:19:39,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:19:39,447 INFO L87 Difference]: Start difference. First operand 1667 states and 2300 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:19:39,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:39,548 INFO L93 Difference]: Finished difference Result 2926 states and 3988 transitions. [2024-11-18 16:19:39,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:19:39,549 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2024-11-18 16:19:39,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:39,558 INFO L225 Difference]: With dead ends: 2926 [2024-11-18 16:19:39,558 INFO L226 Difference]: Without dead ends: 1697 [2024-11-18 16:19:39,562 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:19:39,563 INFO L432 NwaCegarLoop]: 791 mSDtfsCounter, 0 mSDsluCounter, 3159 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3950 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:39,564 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3950 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:19:39,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2024-11-18 16:19:39,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1697. [2024-11-18 16:19:39,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1697 states, 1390 states have (on average 1.3884892086330936) internal successors, (1930), 1411 states have internal predecessors, (1930), 164 states have call successors, (164), 118 states have call predecessors, (164), 141 states have return successors, (232), 170 states have call predecessors, (232), 160 states have call successors, (232) [2024-11-18 16:19:39,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 2326 transitions. [2024-11-18 16:19:39,692 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 2326 transitions. Word has length 65 [2024-11-18 16:19:39,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:39,693 INFO L471 AbstractCegarLoop]: Abstraction has 1697 states and 2326 transitions. [2024-11-18 16:19:39,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:19:39,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 2326 transitions. [2024-11-18 16:19:39,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:19:39,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:39,696 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] [2024-11-18 16:19:39,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 16:19:39,696 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:39,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:39,697 INFO L85 PathProgramCache]: Analyzing trace with hash -429201941, now seen corresponding path program 1 times [2024-11-18 16:19:39,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:39,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590874025] [2024-11-18 16:19:39,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:39,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:39,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:39,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:39,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590874025] [2024-11-18 16:19:39,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590874025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:39,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:39,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 16:19:39,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962753313] [2024-11-18 16:19:39,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:39,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 16:19:39,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:39,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 16:19:39,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 16:19:39,794 INFO L87 Difference]: Start difference. First operand 1697 states and 2326 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:19:40,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:40,524 INFO L93 Difference]: Finished difference Result 4170 states and 5584 transitions. [2024-11-18 16:19:40,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 16:19:40,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-11-18 16:19:40,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:40,541 INFO L225 Difference]: With dead ends: 4170 [2024-11-18 16:19:40,542 INFO L226 Difference]: Without dead ends: 2913 [2024-11-18 16:19:40,546 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:19:40,549 INFO L432 NwaCegarLoop]: 427 mSDtfsCounter, 1107 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:40,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1139 Valid, 861 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 16:19:40,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2913 states. [2024-11-18 16:19:40,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2913 to 2909. [2024-11-18 16:19:40,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2909 states, 2327 states have (on average 1.3339063171465406) internal successors, (3104), 2366 states have internal predecessors, (3104), 299 states have call successors, (299), 228 states have call predecessors, (299), 281 states have return successors, (481), 319 states have call predecessors, (481), 295 states have call successors, (481) [2024-11-18 16:19:40,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2909 states to 2909 states and 3884 transitions. [2024-11-18 16:19:40,717 INFO L78 Accepts]: Start accepts. Automaton has 2909 states and 3884 transitions. Word has length 65 [2024-11-18 16:19:40,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:40,718 INFO L471 AbstractCegarLoop]: Abstraction has 2909 states and 3884 transitions. [2024-11-18 16:19:40,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:19:40,718 INFO L276 IsEmpty]: Start isEmpty. Operand 2909 states and 3884 transitions. [2024-11-18 16:19:40,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-18 16:19:40,722 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:40,722 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] [2024-11-18 16:19:40,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 16:19:40,722 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:40,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:40,723 INFO L85 PathProgramCache]: Analyzing trace with hash 262059244, now seen corresponding path program 1 times [2024-11-18 16:19:40,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:40,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321960239] [2024-11-18 16:19:40,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:40,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:40,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:40,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:40,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321960239] [2024-11-18 16:19:40,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321960239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:40,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:40,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:19:40,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569938260] [2024-11-18 16:19:40,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:40,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:19:40,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:40,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:19:40,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:19:40,784 INFO L87 Difference]: Start difference. First operand 2909 states and 3884 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:19:41,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:41,017 INFO L93 Difference]: Finished difference Result 7395 states and 9803 transitions. [2024-11-18 16:19:41,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:19:41,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2024-11-18 16:19:41,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:41,050 INFO L225 Difference]: With dead ends: 7395 [2024-11-18 16:19:41,051 INFO L226 Difference]: Without dead ends: 4912 [2024-11-18 16:19:41,061 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:19:41,062 INFO L432 NwaCegarLoop]: 805 mSDtfsCounter, 103 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:41,062 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 1564 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:19:41,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4912 states. [2024-11-18 16:19:41,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4912 to 4822. [2024-11-18 16:19:41,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4822 states, 3788 states have (on average 1.3067581837381204) internal successors, (4950), 3841 states have internal predecessors, (4950), 522 states have call successors, (522), 420 states have call predecessors, (522), 510 states have return successors, (877), 565 states have call predecessors, (877), 518 states have call successors, (877) [2024-11-18 16:19:41,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4822 states to 4822 states and 6349 transitions. [2024-11-18 16:19:41,366 INFO L78 Accepts]: Start accepts. Automaton has 4822 states and 6349 transitions. Word has length 66 [2024-11-18 16:19:41,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:41,367 INFO L471 AbstractCegarLoop]: Abstraction has 4822 states and 6349 transitions. [2024-11-18 16:19:41,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:19:41,368 INFO L276 IsEmpty]: Start isEmpty. Operand 4822 states and 6349 transitions. [2024-11-18 16:19:41,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-18 16:19:41,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:41,370 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] [2024-11-18 16:19:41,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 16:19:41,370 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:41,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:41,371 INFO L85 PathProgramCache]: Analyzing trace with hash 73739401, now seen corresponding path program 1 times [2024-11-18 16:19:41,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:41,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372285500] [2024-11-18 16:19:41,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:41,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:41,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:41,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:41,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372285500] [2024-11-18 16:19:41,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372285500] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:41,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:41,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 16:19:41,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292245901] [2024-11-18 16:19:41,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:41,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 16:19:41,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:41,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 16:19:41,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 16:19:41,511 INFO L87 Difference]: Start difference. First operand 4822 states and 6349 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 16:19:41,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:41,964 INFO L93 Difference]: Finished difference Result 5629 states and 7345 transitions. [2024-11-18 16:19:41,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:19:41,965 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2024-11-18 16:19:41,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:42,001 INFO L225 Difference]: With dead ends: 5629 [2024-11-18 16:19:42,001 INFO L226 Difference]: Without dead ends: 5626 [2024-11-18 16:19:42,006 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:19:42,008 INFO L432 NwaCegarLoop]: 804 mSDtfsCounter, 1487 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:42,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1487 Valid, 894 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 16:19:42,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5626 states. [2024-11-18 16:19:42,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5626 to 5558. [2024-11-18 16:19:42,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5558 states, 4351 states have (on average 1.2962537347736152) internal successors, (5640), 4413 states have internal predecessors, (5640), 606 states have call successors, (606), 496 states have call predecessors, (606), 599 states have return successors, (1011), 653 states have call predecessors, (1011), 603 states have call successors, (1011) [2024-11-18 16:19:42,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5558 states to 5558 states and 7257 transitions. [2024-11-18 16:19:42,410 INFO L78 Accepts]: Start accepts. Automaton has 5558 states and 7257 transitions. Word has length 73 [2024-11-18 16:19:42,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:42,411 INFO L471 AbstractCegarLoop]: Abstraction has 5558 states and 7257 transitions. [2024-11-18 16:19:42,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 16:19:42,412 INFO L276 IsEmpty]: Start isEmpty. Operand 5558 states and 7257 transitions. [2024-11-18 16:19:42,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-18 16:19:42,416 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:42,416 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] [2024-11-18 16:19:42,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 16:19:42,418 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:42,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:42,418 INFO L85 PathProgramCache]: Analyzing trace with hash -2010594219, now seen corresponding path program 1 times [2024-11-18 16:19:42,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:42,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511623578] [2024-11-18 16:19:42,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:42,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:42,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:42,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:42,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:42,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511623578] [2024-11-18 16:19:42,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511623578] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:19:42,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143970560] [2024-11-18 16:19:42,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:42,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:19:42,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:19:42,542 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) [2024-11-18 16:19:42,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 16:19:42,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:42,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 16:19:42,693 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:19:42,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:42,964 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 16:19:43,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:43,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143970560] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 16:19:43,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 16:19:43,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2024-11-18 16:19:43,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237859723] [2024-11-18 16:19:43,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 16:19:43,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 16:19:43,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:43,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 16:19:43,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-18 16:19:43,062 INFO L87 Difference]: Start difference. First operand 5558 states and 7257 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 16:19:44,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:44,169 INFO L93 Difference]: Finished difference Result 11492 states and 14794 transitions. [2024-11-18 16:19:44,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 16:19:44,171 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2024-11-18 16:19:44,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:44,272 INFO L225 Difference]: With dead ends: 11492 [2024-11-18 16:19:44,272 INFO L226 Difference]: Without dead ends: 11489 [2024-11-18 16:19:44,279 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-18 16:19:44,280 INFO L432 NwaCegarLoop]: 983 mSDtfsCounter, 1091 mSDsluCounter, 2734 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1091 SdHoareTripleChecker+Valid, 3717 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:44,280 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1091 Valid, 3717 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:19:44,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11489 states. [2024-11-18 16:19:44,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11489 to 10546. [2024-11-18 16:19:44,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10546 states, 8211 states have (on average 1.2824260138838144) internal successors, (10530), 8325 states have internal predecessors, (10530), 1150 states have call successors, (1150), 964 states have call predecessors, (1150), 1183 states have return successors, (1951), 1261 states have call predecessors, (1951), 1147 states have call successors, (1951) [2024-11-18 16:19:45,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10546 states to 10546 states and 13631 transitions. [2024-11-18 16:19:45,052 INFO L78 Accepts]: Start accepts. Automaton has 10546 states and 13631 transitions. Word has length 74 [2024-11-18 16:19:45,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:45,053 INFO L471 AbstractCegarLoop]: Abstraction has 10546 states and 13631 transitions. [2024-11-18 16:19:45,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 16:19:45,054 INFO L276 IsEmpty]: Start isEmpty. Operand 10546 states and 13631 transitions. [2024-11-18 16:19:45,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-18 16:19:45,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:45,057 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] [2024-11-18 16:19:45,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 16:19:45,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:19:45,263 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:45,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:45,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1734280695, now seen corresponding path program 2 times [2024-11-18 16:19:45,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:45,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836946685] [2024-11-18 16:19:45,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 16:19:45,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:45,289 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 16:19:45,290 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 16:19:45,315 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:45,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:45,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836946685] [2024-11-18 16:19:45,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836946685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:45,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:45,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:19:45,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321330064] [2024-11-18 16:19:45,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:45,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:19:45,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:45,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:19:45,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:19:45,318 INFO L87 Difference]: Start difference. First operand 10546 states and 13631 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 16:19:45,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:45,699 INFO L93 Difference]: Finished difference Result 15290 states and 19787 transitions. [2024-11-18 16:19:45,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:19:45,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2024-11-18 16:19:45,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:45,736 INFO L225 Difference]: With dead ends: 15290 [2024-11-18 16:19:45,737 INFO L226 Difference]: Without dead ends: 5780 [2024-11-18 16:19:45,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:19:45,769 INFO L432 NwaCegarLoop]: 871 mSDtfsCounter, 762 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:45,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 988 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:19:45,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5780 states. [2024-11-18 16:19:46,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5780 to 5732. [2024-11-18 16:19:46,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5732 states, 4530 states have (on average 1.2699779249448124) internal successors, (5753), 4580 states have internal predecessors, (5753), 606 states have call successors, (606), 496 states have call predecessors, (606), 594 states have return successors, (933), 660 states have call predecessors, (933), 603 states have call successors, (933) [2024-11-18 16:19:46,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5732 states to 5732 states and 7292 transitions. [2024-11-18 16:19:46,355 INFO L78 Accepts]: Start accepts. Automaton has 5732 states and 7292 transitions. Word has length 77 [2024-11-18 16:19:46,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:46,356 INFO L471 AbstractCegarLoop]: Abstraction has 5732 states and 7292 transitions. [2024-11-18 16:19:46,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 16:19:46,357 INFO L276 IsEmpty]: Start isEmpty. Operand 5732 states and 7292 transitions. [2024-11-18 16:19:46,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-18 16:19:46,361 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:46,361 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] [2024-11-18 16:19:46,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 16:19:46,362 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:46,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:46,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1609122361, now seen corresponding path program 1 times [2024-11-18 16:19:46,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:46,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83747863] [2024-11-18 16:19:46,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:46,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:46,504 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 16:19:46,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:46,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83747863] [2024-11-18 16:19:46,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83747863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:46,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:46,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:19:46,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118504366] [2024-11-18 16:19:46,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:46,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:19:46,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:46,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:19:46,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:19:46,508 INFO L87 Difference]: Start difference. First operand 5732 states and 7292 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 16:19:48,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:48,485 INFO L93 Difference]: Finished difference Result 16726 states and 21097 transitions. [2024-11-18 16:19:48,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 16:19:48,486 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2024-11-18 16:19:48,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:48,551 INFO L225 Difference]: With dead ends: 16726 [2024-11-18 16:19:48,551 INFO L226 Difference]: Without dead ends: 11444 [2024-11-18 16:19:48,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-18 16:19:48,576 INFO L432 NwaCegarLoop]: 500 mSDtfsCounter, 792 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 1674 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 1815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:48,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 2230 Invalid, 1815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1674 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 16:19:48,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11444 states. [2024-11-18 16:19:49,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11444 to 10855. [2024-11-18 16:19:49,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10855 states, 8464 states have (on average 1.2332230623818525) internal successors, (10438), 8596 states have internal predecessors, (10438), 1177 states have call successors, (1177), 980 states have call predecessors, (1177), 1212 states have return successors, (1994), 1287 states have call predecessors, (1994), 1174 states have call successors, (1994) [2024-11-18 16:19:49,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10855 states to 10855 states and 13609 transitions. [2024-11-18 16:19:49,308 INFO L78 Accepts]: Start accepts. Automaton has 10855 states and 13609 transitions. Word has length 84 [2024-11-18 16:19:49,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:49,309 INFO L471 AbstractCegarLoop]: Abstraction has 10855 states and 13609 transitions. [2024-11-18 16:19:49,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 16:19:49,309 INFO L276 IsEmpty]: Start isEmpty. Operand 10855 states and 13609 transitions. [2024-11-18 16:19:49,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-18 16:19:49,315 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:49,315 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] [2024-11-18 16:19:49,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 16:19:49,316 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:49,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:49,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1227969209, now seen corresponding path program 1 times [2024-11-18 16:19:49,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:49,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154719713] [2024-11-18 16:19:49,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:49,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:49,454 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 16:19:49,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:49,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154719713] [2024-11-18 16:19:49,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154719713] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:49,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:49,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 16:19:49,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510098669] [2024-11-18 16:19:49,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:49,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 16:19:49,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:49,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 16:19:49,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 16:19:49,457 INFO L87 Difference]: Start difference. First operand 10855 states and 13609 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 16:19:51,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:51,433 INFO L93 Difference]: Finished difference Result 21277 states and 26524 transitions. [2024-11-18 16:19:51,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 16:19:51,434 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2024-11-18 16:19:51,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:51,502 INFO L225 Difference]: With dead ends: 21277 [2024-11-18 16:19:51,502 INFO L226 Difference]: Without dead ends: 11306 [2024-11-18 16:19:51,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2024-11-18 16:19:51,533 INFO L432 NwaCegarLoop]: 514 mSDtfsCounter, 1771 mSDsluCounter, 1784 mSDsCounter, 0 mSdLazyCounter, 1826 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1811 SdHoareTripleChecker+Valid, 2298 SdHoareTripleChecker+Invalid, 2081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 1826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:51,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1811 Valid, 2298 Invalid, 2081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 1826 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 16:19:51,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11306 states. [2024-11-18 16:19:52,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11306 to 10716. [2024-11-18 16:19:52,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10716 states, 8363 states have (on average 1.2170273825182352) internal successors, (10178), 8491 states have internal predecessors, (10178), 1155 states have call successors, (1155), 966 states have call predecessors, (1155), 1196 states have return successors, (1827), 1265 states have call predecessors, (1827), 1152 states have call successors, (1827) [2024-11-18 16:19:52,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10716 states to 10716 states and 13160 transitions. [2024-11-18 16:19:52,549 INFO L78 Accepts]: Start accepts. Automaton has 10716 states and 13160 transitions. Word has length 93 [2024-11-18 16:19:52,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:52,550 INFO L471 AbstractCegarLoop]: Abstraction has 10716 states and 13160 transitions. [2024-11-18 16:19:52,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 16:19:52,551 INFO L276 IsEmpty]: Start isEmpty. Operand 10716 states and 13160 transitions. [2024-11-18 16:19:52,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 16:19:52,563 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:52,564 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:19:52,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 16:19:52,564 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:52,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:52,565 INFO L85 PathProgramCache]: Analyzing trace with hash 2097868437, now seen corresponding path program 1 times [2024-11-18 16:19:52,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:52,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382904846] [2024-11-18 16:19:52,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:52,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:52,790 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-18 16:19:52,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:52,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382904846] [2024-11-18 16:19:52,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382904846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:19:52,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838489081] [2024-11-18 16:19:52,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:52,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:19:52,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:19:52,793 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:19:52,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 16:19:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:52,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 16:19:52,951 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:19:53,005 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 16:19:53,008 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:19:53,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838489081] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:53,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:19:53,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2024-11-18 16:19:53,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928606794] [2024-11-18 16:19:53,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:53,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:19:53,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:53,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:19:53,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-18 16:19:53,011 INFO L87 Difference]: Start difference. First operand 10716 states and 13160 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 16:19:53,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:53,297 INFO L93 Difference]: Finished difference Result 15376 states and 18771 transitions. [2024-11-18 16:19:53,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:19:53,298 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2024-11-18 16:19:53,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:53,334 INFO L225 Difference]: With dead ends: 15376 [2024-11-18 16:19:53,334 INFO L226 Difference]: Without dead ends: 5118 [2024-11-18 16:19:53,360 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-18 16:19:53,361 INFO L432 NwaCegarLoop]: 789 mSDtfsCounter, 0 mSDsluCounter, 3147 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3936 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:53,362 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3936 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:19:53,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2024-11-18 16:19:53,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 4916. [2024-11-18 16:19:53,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4916 states, 3955 states have (on average 1.2209860935524652) internal successors, (4829), 3998 states have internal predecessors, (4829), 470 states have call successors, (470), 370 states have call predecessors, (470), 489 states have return successors, (727), 548 states have call predecessors, (727), 467 states have call successors, (727) [2024-11-18 16:19:53,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4916 states to 4916 states and 6026 transitions. [2024-11-18 16:19:53,650 INFO L78 Accepts]: Start accepts. Automaton has 4916 states and 6026 transitions. Word has length 145 [2024-11-18 16:19:53,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:53,650 INFO L471 AbstractCegarLoop]: Abstraction has 4916 states and 6026 transitions. [2024-11-18 16:19:53,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 16:19:53,651 INFO L276 IsEmpty]: Start isEmpty. Operand 4916 states and 6026 transitions. [2024-11-18 16:19:53,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-18 16:19:53,658 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:53,658 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:19:53,677 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 16:19:53,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-18 16:19:53,860 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:53,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:53,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1229740519, now seen corresponding path program 1 times [2024-11-18 16:19:53,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:53,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928969397] [2024-11-18 16:19:53,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:53,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:53,910 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-18 16:19:53,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:53,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928969397] [2024-11-18 16:19:53,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928969397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:53,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:53,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:19:53,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933403753] [2024-11-18 16:19:53,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:53,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:19:53,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:53,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:19:53,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:19:53,913 INFO L87 Difference]: Start difference. First operand 4916 states and 6026 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-18 16:19:54,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:54,171 INFO L93 Difference]: Finished difference Result 5141 states and 6289 transitions. [2024-11-18 16:19:54,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:19:54,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 147 [2024-11-18 16:19:54,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:54,202 INFO L225 Difference]: With dead ends: 5141 [2024-11-18 16:19:54,203 INFO L226 Difference]: Without dead ends: 4601 [2024-11-18 16:19:54,208 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:19:54,209 INFO L432 NwaCegarLoop]: 790 mSDtfsCounter, 124 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1452 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:54,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 1452 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:19:54,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2024-11-18 16:19:54,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 4601. [2024-11-18 16:19:54,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4601 states, 3712 states have (on average 1.2241379310344827) internal successors, (4544), 3751 states have internal predecessors, (4544), 436 states have call successors, (436), 340 states have call predecessors, (436), 451 states have return successors, (681), 510 states have call predecessors, (681), 433 states have call successors, (681) [2024-11-18 16:19:54,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4601 states to 4601 states and 5661 transitions. [2024-11-18 16:19:54,598 INFO L78 Accepts]: Start accepts. Automaton has 4601 states and 5661 transitions. Word has length 147 [2024-11-18 16:19:54,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:54,599 INFO L471 AbstractCegarLoop]: Abstraction has 4601 states and 5661 transitions. [2024-11-18 16:19:54,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-18 16:19:54,599 INFO L276 IsEmpty]: Start isEmpty. Operand 4601 states and 5661 transitions. [2024-11-18 16:19:54,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-18 16:19:54,607 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:54,607 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:19:54,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 16:19:54,608 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:54,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:54,608 INFO L85 PathProgramCache]: Analyzing trace with hash -825958447, now seen corresponding path program 1 times [2024-11-18 16:19:54,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:54,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248220546] [2024-11-18 16:19:54,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:54,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:54,702 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-18 16:19:54,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:54,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248220546] [2024-11-18 16:19:54,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248220546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:54,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:54,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:19:54,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237067301] [2024-11-18 16:19:54,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:54,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:19:54,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:54,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:19:54,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:19:54,706 INFO L87 Difference]: Start difference. First operand 4601 states and 5661 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-18 16:19:55,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:55,800 INFO L93 Difference]: Finished difference Result 8836 states and 10737 transitions. [2024-11-18 16:19:55,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:19:55,800 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 159 [2024-11-18 16:19:55,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:55,826 INFO L225 Difference]: With dead ends: 8836 [2024-11-18 16:19:55,826 INFO L226 Difference]: Without dead ends: 4982 [2024-11-18 16:19:55,839 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 16:19:55,840 INFO L432 NwaCegarLoop]: 477 mSDtfsCounter, 383 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:55,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 1676 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 16:19:55,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4982 states. [2024-11-18 16:19:56,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4982 to 4884. [2024-11-18 16:19:56,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4884 states, 3938 states have (on average 1.2168613509395632) internal successors, (4792), 3988 states have internal predecessors, (4792), 465 states have call successors, (465), 369 states have call predecessors, (465), 479 states have return successors, (721), 527 states have call predecessors, (721), 462 states have call successors, (721) [2024-11-18 16:19:56,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4884 states to 4884 states and 5978 transitions. [2024-11-18 16:19:56,141 INFO L78 Accepts]: Start accepts. Automaton has 4884 states and 5978 transitions. Word has length 159 [2024-11-18 16:19:56,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:56,141 INFO L471 AbstractCegarLoop]: Abstraction has 4884 states and 5978 transitions. [2024-11-18 16:19:56,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-18 16:19:56,142 INFO L276 IsEmpty]: Start isEmpty. Operand 4884 states and 5978 transitions. [2024-11-18 16:19:56,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-18 16:19:56,151 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:56,151 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:19:56,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 16:19:56,152 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:56,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:56,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1136712456, now seen corresponding path program 1 times [2024-11-18 16:19:56,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:56,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570518015] [2024-11-18 16:19:56,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:56,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:56,446 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 25 proven. 11 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-18 16:19:56,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:56,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570518015] [2024-11-18 16:19:56,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570518015] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:19:56,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290748982] [2024-11-18 16:19:56,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:56,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:19:56,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:19:56,449 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:19:56,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 16:19:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:56,616 INFO L255 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 16:19:56,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:19:56,804 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-18 16:19:56,805 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:19:56,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290748982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:56,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:19:56,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-18 16:19:56,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950112566] [2024-11-18 16:19:56,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:56,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 16:19:56,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:56,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 16:19:56,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-18 16:19:56,808 INFO L87 Difference]: Start difference. First operand 4884 states and 5978 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 16:19:57,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:57,860 INFO L93 Difference]: Finished difference Result 13049 states and 15991 transitions. [2024-11-18 16:19:57,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 16:19:57,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 162 [2024-11-18 16:19:57,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:57,895 INFO L225 Difference]: With dead ends: 13049 [2024-11-18 16:19:57,895 INFO L226 Difference]: Without dead ends: 8439 [2024-11-18 16:19:57,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-18 16:19:57,907 INFO L432 NwaCegarLoop]: 471 mSDtfsCounter, 396 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:57,908 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 1266 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 16:19:57,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8439 states. [2024-11-18 16:19:58,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8439 to 8317. [2024-11-18 16:19:58,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8317 states, 6663 states have (on average 1.180549302116164) internal successors, (7866), 6760 states have internal predecessors, (7866), 806 states have call successors, (806), 639 states have call predecessors, (806), 846 states have return successors, (1331), 918 states have call predecessors, (1331), 803 states have call successors, (1331) [2024-11-18 16:19:58,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8317 states to 8317 states and 10003 transitions. [2024-11-18 16:19:58,489 INFO L78 Accepts]: Start accepts. Automaton has 8317 states and 10003 transitions. Word has length 162 [2024-11-18 16:19:58,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:58,490 INFO L471 AbstractCegarLoop]: Abstraction has 8317 states and 10003 transitions. [2024-11-18 16:19:58,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 16:19:58,490 INFO L276 IsEmpty]: Start isEmpty. Operand 8317 states and 10003 transitions. [2024-11-18 16:19:58,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-18 16:19:58,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:58,502 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:19:58,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 16:19:58,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:19:58,704 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:58,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:58,704 INFO L85 PathProgramCache]: Analyzing trace with hash -431287319, now seen corresponding path program 1 times [2024-11-18 16:19:58,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:58,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743458636] [2024-11-18 16:19:58,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:58,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:58,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:58,805 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-11-18 16:19:58,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:58,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743458636] [2024-11-18 16:19:58,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743458636] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:19:58,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795440068] [2024-11-18 16:19:58,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:58,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:19:58,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:19:58,808 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:19:58,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 16:19:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:59,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 16:19:59,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:19:59,064 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-11-18 16:19:59,065 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:19:59,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795440068] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:59,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:19:59,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-18 16:19:59,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617373042] [2024-11-18 16:19:59,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:59,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:19:59,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:59,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:19:59,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-18 16:19:59,068 INFO L87 Difference]: Start difference. First operand 8317 states and 10003 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-18 16:20:00,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:00,018 INFO L93 Difference]: Finished difference Result 11728 states and 13963 transitions. [2024-11-18 16:20:00,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 16:20:00,019 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 179 [2024-11-18 16:20:00,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:00,047 INFO L225 Difference]: With dead ends: 11728 [2024-11-18 16:20:00,047 INFO L226 Difference]: Without dead ends: 3453 [2024-11-18 16:20:00,062 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-18 16:20:00,063 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 1074 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:00,064 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 1206 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 16:20:00,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3453 states. [2024-11-18 16:20:00,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3453 to 3033. [2024-11-18 16:20:00,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3033 states, 2495 states have (on average 1.2064128256513027) internal successors, (3010), 2520 states have internal predecessors, (3010), 271 states have call successors, (271), 202 states have call predecessors, (271), 265 states have return successors, (381), 311 states have call predecessors, (381), 268 states have call successors, (381) [2024-11-18 16:20:00,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 3662 transitions. [2024-11-18 16:20:00,405 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 3662 transitions. Word has length 179 [2024-11-18 16:20:00,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:00,405 INFO L471 AbstractCegarLoop]: Abstraction has 3033 states and 3662 transitions. [2024-11-18 16:20:00,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-18 16:20:00,406 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 3662 transitions. [2024-11-18 16:20:00,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-18 16:20:00,411 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:00,411 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:20:00,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 16:20:00,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-18 16:20:00,616 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:00,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:00,617 INFO L85 PathProgramCache]: Analyzing trace with hash -2029088811, now seen corresponding path program 1 times [2024-11-18 16:20:00,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:00,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509983090] [2024-11-18 16:20:00,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:00,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:00,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:00,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:00,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509983090] [2024-11-18 16:20:00,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509983090] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:00,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:00,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:20:00,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412166468] [2024-11-18 16:20:00,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:00,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:20:00,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:00,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:20:00,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:20:00,700 INFO L87 Difference]: Start difference. First operand 3033 states and 3662 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:00,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:00,952 INFO L93 Difference]: Finished difference Result 3450 states and 4316 transitions. [2024-11-18 16:20:00,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:20:00,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2024-11-18 16:20:00,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:00,973 INFO L225 Difference]: With dead ends: 3450 [2024-11-18 16:20:00,973 INFO L226 Difference]: Without dead ends: 3033 [2024-11-18 16:20:00,977 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:20:00,977 INFO L432 NwaCegarLoop]: 789 mSDtfsCounter, 656 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:00,978 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 918 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:20:00,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3033 states. [2024-11-18 16:20:01,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3033 to 3033. [2024-11-18 16:20:01,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3033 states, 2495 states have (on average 1.2060120240480963) internal successors, (3009), 2520 states have internal predecessors, (3009), 271 states have call successors, (271), 202 states have call predecessors, (271), 265 states have return successors, (381), 311 states have call predecessors, (381), 268 states have call successors, (381) [2024-11-18 16:20:01,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 3661 transitions. [2024-11-18 16:20:01,332 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 3661 transitions. Word has length 190 [2024-11-18 16:20:01,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:01,333 INFO L471 AbstractCegarLoop]: Abstraction has 3033 states and 3661 transitions. [2024-11-18 16:20:01,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:01,334 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 3661 transitions. [2024-11-18 16:20:01,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-18 16:20:01,339 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:01,339 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:20:01,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 16:20:01,339 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:01,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:01,340 INFO L85 PathProgramCache]: Analyzing trace with hash -680955241, now seen corresponding path program 1 times [2024-11-18 16:20:01,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:01,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944732244] [2024-11-18 16:20:01,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:01,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:01,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:01,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:01,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:01,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944732244] [2024-11-18 16:20:01,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944732244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:01,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:01,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:20:01,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265384128] [2024-11-18 16:20:01,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:01,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:20:01,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:01,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:20:01,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:20:01,417 INFO L87 Difference]: Start difference. First operand 3033 states and 3661 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:01,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:01,699 INFO L93 Difference]: Finished difference Result 3442 states and 4299 transitions. [2024-11-18 16:20:01,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:20:01,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2024-11-18 16:20:01,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:01,718 INFO L225 Difference]: With dead ends: 3442 [2024-11-18 16:20:01,719 INFO L226 Difference]: Without dead ends: 3033 [2024-11-18 16:20:01,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:20:01,721 INFO L432 NwaCegarLoop]: 788 mSDtfsCounter, 647 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:01,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 917 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:20:01,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3033 states. [2024-11-18 16:20:02,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3033 to 3033. [2024-11-18 16:20:02,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3033 states, 2495 states have (on average 1.2056112224448898) internal successors, (3008), 2520 states have internal predecessors, (3008), 271 states have call successors, (271), 202 states have call predecessors, (271), 265 states have return successors, (381), 311 states have call predecessors, (381), 268 states have call successors, (381) [2024-11-18 16:20:02,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 3660 transitions. [2024-11-18 16:20:02,069 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 3660 transitions. Word has length 190 [2024-11-18 16:20:02,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:02,070 INFO L471 AbstractCegarLoop]: Abstraction has 3033 states and 3660 transitions. [2024-11-18 16:20:02,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:02,070 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 3660 transitions. [2024-11-18 16:20:02,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-18 16:20:02,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:02,075 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:20:02,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 16:20:02,076 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:02,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:02,076 INFO L85 PathProgramCache]: Analyzing trace with hash 149698393, now seen corresponding path program 1 times [2024-11-18 16:20:02,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:02,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208712632] [2024-11-18 16:20:02,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:02,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:02,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:02,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:02,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208712632] [2024-11-18 16:20:02,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208712632] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:02,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:02,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:20:02,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769194631] [2024-11-18 16:20:02,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:02,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:20:02,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:02,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:20:02,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:20:02,249 INFO L87 Difference]: Start difference. First operand 3033 states and 3660 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:03,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:03,129 INFO L93 Difference]: Finished difference Result 3889 states and 5016 transitions. [2024-11-18 16:20:03,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:20:03,130 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2024-11-18 16:20:03,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:03,150 INFO L225 Difference]: With dead ends: 3889 [2024-11-18 16:20:03,150 INFO L226 Difference]: Without dead ends: 3487 [2024-11-18 16:20:03,152 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:03,153 INFO L432 NwaCegarLoop]: 581 mSDtfsCounter, 1428 mSDsluCounter, 1437 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1459 SdHoareTripleChecker+Valid, 2018 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:03,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1459 Valid, 2018 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 16:20:03,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3487 states. [2024-11-18 16:20:03,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3487 to 3454. [2024-11-18 16:20:03,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3454 states, 2887 states have (on average 1.2570142015933494) internal successors, (3629), 2913 states have internal predecessors, (3629), 293 states have call successors, (293), 208 states have call predecessors, (293), 272 states have return successors, (404), 333 states have call predecessors, (404), 290 states have call successors, (404) [2024-11-18 16:20:03,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3454 states to 3454 states and 4326 transitions. [2024-11-18 16:20:03,417 INFO L78 Accepts]: Start accepts. Automaton has 3454 states and 4326 transitions. Word has length 190 [2024-11-18 16:20:03,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:03,418 INFO L471 AbstractCegarLoop]: Abstraction has 3454 states and 4326 transitions. [2024-11-18 16:20:03,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:03,418 INFO L276 IsEmpty]: Start isEmpty. Operand 3454 states and 4326 transitions. [2024-11-18 16:20:03,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-18 16:20:03,423 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:03,424 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:20:03,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 16:20:03,425 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:03,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:03,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1697328043, now seen corresponding path program 1 times [2024-11-18 16:20:03,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:03,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065517553] [2024-11-18 16:20:03,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:03,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:03,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:03,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:03,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:03,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065517553] [2024-11-18 16:20:03,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065517553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:03,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:03,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:20:03,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089008979] [2024-11-18 16:20:03,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:03,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:20:03,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:03,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:20:03,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:03,611 INFO L87 Difference]: Start difference. First operand 3454 states and 4326 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:04,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:04,711 INFO L93 Difference]: Finished difference Result 4814 states and 6505 transitions. [2024-11-18 16:20:04,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:20:04,712 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2024-11-18 16:20:04,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:04,725 INFO L225 Difference]: With dead ends: 4814 [2024-11-18 16:20:04,726 INFO L226 Difference]: Without dead ends: 3991 [2024-11-18 16:20:04,728 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:20:04,728 INFO L432 NwaCegarLoop]: 946 mSDtfsCounter, 1439 mSDsluCounter, 2883 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 3829 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:04,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 3829 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 16:20:04,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3991 states. [2024-11-18 16:20:04,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3991 to 3846. [2024-11-18 16:20:04,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3846 states, 3250 states have (on average 1.2898461538461539) internal successors, (4192), 3277 states have internal predecessors, (4192), 315 states have call successors, (315), 214 states have call predecessors, (315), 279 states have return successors, (429), 356 states have call predecessors, (429), 312 states have call successors, (429) [2024-11-18 16:20:05,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3846 states to 3846 states and 4936 transitions. [2024-11-18 16:20:05,013 INFO L78 Accepts]: Start accepts. Automaton has 3846 states and 4936 transitions. Word has length 190 [2024-11-18 16:20:05,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:05,014 INFO L471 AbstractCegarLoop]: Abstraction has 3846 states and 4936 transitions. [2024-11-18 16:20:05,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:05,014 INFO L276 IsEmpty]: Start isEmpty. Operand 3846 states and 4936 transitions. [2024-11-18 16:20:05,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-18 16:20:05,019 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:05,019 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:20:05,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 16:20:05,020 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:05,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:05,020 INFO L85 PathProgramCache]: Analyzing trace with hash 674388823, now seen corresponding path program 1 times [2024-11-18 16:20:05,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:05,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388994592] [2024-11-18 16:20:05,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:05,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:05,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:05,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:05,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388994592] [2024-11-18 16:20:05,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388994592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:05,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:05,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:20:05,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172451695] [2024-11-18 16:20:05,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:05,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:20:05,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:05,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:20:05,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:05,201 INFO L87 Difference]: Start difference. First operand 3846 states and 4936 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:06,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:06,309 INFO L93 Difference]: Finished difference Result 6066 states and 8486 transitions. [2024-11-18 16:20:06,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:20:06,309 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2024-11-18 16:20:06,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:06,331 INFO L225 Difference]: With dead ends: 6066 [2024-11-18 16:20:06,331 INFO L226 Difference]: Without dead ends: 4851 [2024-11-18 16:20:06,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:20:06,338 INFO L432 NwaCegarLoop]: 942 mSDtfsCounter, 1434 mSDsluCounter, 2871 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1465 SdHoareTripleChecker+Valid, 3813 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:06,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1465 Valid, 3813 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 16:20:06,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4851 states. [2024-11-18 16:20:06,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4851 to 4683. [2024-11-18 16:20:06,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4683 states, 4027 states have (on average 1.3451701018127638) internal successors, (5417), 4058 states have internal predecessors, (5417), 359 states have call successors, (359), 226 states have call predecessors, (359), 295 states have return successors, (485), 402 states have call predecessors, (485), 356 states have call successors, (485) [2024-11-18 16:20:06,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4683 states to 4683 states and 6261 transitions. [2024-11-18 16:20:06,669 INFO L78 Accepts]: Start accepts. Automaton has 4683 states and 6261 transitions. Word has length 190 [2024-11-18 16:20:06,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:06,669 INFO L471 AbstractCegarLoop]: Abstraction has 4683 states and 6261 transitions. [2024-11-18 16:20:06,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:06,669 INFO L276 IsEmpty]: Start isEmpty. Operand 4683 states and 6261 transitions. [2024-11-18 16:20:06,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-18 16:20:06,674 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:06,674 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:20:06,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 16:20:06,675 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:06,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:06,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1050219499, now seen corresponding path program 1 times [2024-11-18 16:20:06,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:06,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976095148] [2024-11-18 16:20:06,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:06,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:06,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:06,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:06,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:06,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976095148] [2024-11-18 16:20:06,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976095148] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:06,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:06,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:20:06,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491275893] [2024-11-18 16:20:06,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:06,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:20:06,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:06,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:20:06,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:20:06,836 INFO L87 Difference]: Start difference. First operand 4683 states and 6261 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:07,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:07,469 INFO L93 Difference]: Finished difference Result 7021 states and 10054 transitions. [2024-11-18 16:20:07,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:20:07,470 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2024-11-18 16:20:07,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:07,502 INFO L225 Difference]: With dead ends: 7021 [2024-11-18 16:20:07,502 INFO L226 Difference]: Without dead ends: 4969 [2024-11-18 16:20:07,510 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:07,511 INFO L432 NwaCegarLoop]: 566 mSDtfsCounter, 1061 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:07,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1092 Valid, 1507 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:20:07,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4969 states. [2024-11-18 16:20:07,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4969 to 4683. [2024-11-18 16:20:07,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4683 states, 4027 states have (on average 1.343928482741495) internal successors, (5412), 4058 states have internal predecessors, (5412), 359 states have call successors, (359), 226 states have call predecessors, (359), 295 states have return successors, (485), 402 states have call predecessors, (485), 356 states have call successors, (485) [2024-11-18 16:20:07,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4683 states to 4683 states and 6256 transitions. [2024-11-18 16:20:07,924 INFO L78 Accepts]: Start accepts. Automaton has 4683 states and 6256 transitions. Word has length 190 [2024-11-18 16:20:07,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:07,924 INFO L471 AbstractCegarLoop]: Abstraction has 4683 states and 6256 transitions. [2024-11-18 16:20:07,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:07,925 INFO L276 IsEmpty]: Start isEmpty. Operand 4683 states and 6256 transitions. [2024-11-18 16:20:07,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-18 16:20:07,930 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:07,930 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:20:07,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-18 16:20:07,931 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:07,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:07,931 INFO L85 PathProgramCache]: Analyzing trace with hash -551662697, now seen corresponding path program 1 times [2024-11-18 16:20:07,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:07,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159005227] [2024-11-18 16:20:07,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:07,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:08,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:08,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:08,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159005227] [2024-11-18 16:20:08,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159005227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:08,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:08,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:20:08,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258608993] [2024-11-18 16:20:08,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:08,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:20:08,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:08,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:20:08,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:20:08,073 INFO L87 Difference]: Start difference. First operand 4683 states and 6256 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:08,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:08,719 INFO L93 Difference]: Finished difference Result 7010 states and 10022 transitions. [2024-11-18 16:20:08,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:20:08,720 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2024-11-18 16:20:08,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:08,741 INFO L225 Difference]: With dead ends: 7010 [2024-11-18 16:20:08,741 INFO L226 Difference]: Without dead ends: 4958 [2024-11-18 16:20:08,747 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:08,747 INFO L432 NwaCegarLoop]: 514 mSDtfsCounter, 1105 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1136 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:08,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1136 Valid, 1401 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:20:08,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4958 states. [2024-11-18 16:20:09,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4958 to 4683. [2024-11-18 16:20:09,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4683 states, 4027 states have (on average 1.342686863670226) internal successors, (5407), 4058 states have internal predecessors, (5407), 359 states have call successors, (359), 226 states have call predecessors, (359), 295 states have return successors, (485), 402 states have call predecessors, (485), 356 states have call successors, (485) [2024-11-18 16:20:09,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4683 states to 4683 states and 6251 transitions. [2024-11-18 16:20:09,115 INFO L78 Accepts]: Start accepts. Automaton has 4683 states and 6251 transitions. Word has length 190 [2024-11-18 16:20:09,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:09,115 INFO L471 AbstractCegarLoop]: Abstraction has 4683 states and 6251 transitions. [2024-11-18 16:20:09,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:09,116 INFO L276 IsEmpty]: Start isEmpty. Operand 4683 states and 6251 transitions. [2024-11-18 16:20:09,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-18 16:20:09,119 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:09,120 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:20:09,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-18 16:20:09,120 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:09,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:09,121 INFO L85 PathProgramCache]: Analyzing trace with hash 18609109, now seen corresponding path program 1 times [2024-11-18 16:20:09,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:09,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822965206] [2024-11-18 16:20:09,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:09,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:09,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:09,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:09,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822965206] [2024-11-18 16:20:09,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822965206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:09,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:09,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:20:09,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192296566] [2024-11-18 16:20:09,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:09,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:20:09,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:09,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:20:09,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:20:09,262 INFO L87 Difference]: Start difference. First operand 4683 states and 6251 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:10,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:10,063 INFO L93 Difference]: Finished difference Result 6988 states and 9968 transitions. [2024-11-18 16:20:10,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:20:10,064 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2024-11-18 16:20:10,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:10,082 INFO L225 Difference]: With dead ends: 6988 [2024-11-18 16:20:10,083 INFO L226 Difference]: Without dead ends: 4936 [2024-11-18 16:20:10,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:10,087 INFO L432 NwaCegarLoop]: 558 mSDtfsCounter, 1054 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 1485 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:10,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 1485 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:20:10,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4936 states. [2024-11-18 16:20:10,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4936 to 4683. [2024-11-18 16:20:10,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4683 states, 4027 states have (on average 1.341445244598957) internal successors, (5402), 4058 states have internal predecessors, (5402), 359 states have call successors, (359), 226 states have call predecessors, (359), 295 states have return successors, (485), 402 states have call predecessors, (485), 356 states have call successors, (485) [2024-11-18 16:20:10,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4683 states to 4683 states and 6246 transitions. [2024-11-18 16:20:10,454 INFO L78 Accepts]: Start accepts. Automaton has 4683 states and 6246 transitions. Word has length 190 [2024-11-18 16:20:10,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:10,454 INFO L471 AbstractCegarLoop]: Abstraction has 4683 states and 6246 transitions. [2024-11-18 16:20:10,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:10,454 INFO L276 IsEmpty]: Start isEmpty. Operand 4683 states and 6246 transitions. [2024-11-18 16:20:10,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-18 16:20:10,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:10,457 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:20:10,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-18 16:20:10,458 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:10,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:10,458 INFO L85 PathProgramCache]: Analyzing trace with hash -767388781, now seen corresponding path program 1 times [2024-11-18 16:20:10,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:10,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120188393] [2024-11-18 16:20:10,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:10,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:10,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:10,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:10,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120188393] [2024-11-18 16:20:10,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120188393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:10,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:10,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:20:10,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630506357] [2024-11-18 16:20:10,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:10,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:20:10,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:10,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:20:10,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:10,636 INFO L87 Difference]: Start difference. First operand 4683 states and 6246 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:11,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:11,743 INFO L93 Difference]: Finished difference Result 8713 states and 12692 transitions. [2024-11-18 16:20:11,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:20:11,744 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2024-11-18 16:20:11,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:11,768 INFO L225 Difference]: With dead ends: 8713 [2024-11-18 16:20:11,768 INFO L226 Difference]: Without dead ends: 6661 [2024-11-18 16:20:11,773 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:20:11,774 INFO L432 NwaCegarLoop]: 920 mSDtfsCounter, 1402 mSDsluCounter, 2810 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1433 SdHoareTripleChecker+Valid, 3730 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:11,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1433 Valid, 3730 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 16:20:11,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6661 states. [2024-11-18 16:20:12,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6661 to 6474. [2024-11-18 16:20:12,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6474 states, 5692 states have (on average 1.414968376669009) internal successors, (8054), 5737 states have internal predecessors, (8054), 447 states have call successors, (447), 250 states have call predecessors, (447), 333 states have return successors, (621), 494 states have call predecessors, (621), 444 states have call successors, (621) [2024-11-18 16:20:12,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6474 states to 6474 states and 9122 transitions. [2024-11-18 16:20:12,182 INFO L78 Accepts]: Start accepts. Automaton has 6474 states and 9122 transitions. Word has length 190 [2024-11-18 16:20:12,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:12,183 INFO L471 AbstractCegarLoop]: Abstraction has 6474 states and 9122 transitions. [2024-11-18 16:20:12,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:12,183 INFO L276 IsEmpty]: Start isEmpty. Operand 6474 states and 9122 transitions. [2024-11-18 16:20:12,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-18 16:20:12,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:12,189 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:20:12,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-18 16:20:12,190 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:12,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:12,190 INFO L85 PathProgramCache]: Analyzing trace with hash -100006891, now seen corresponding path program 1 times [2024-11-18 16:20:12,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:12,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266334218] [2024-11-18 16:20:12,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:12,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:12,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:12,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:12,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266334218] [2024-11-18 16:20:12,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266334218] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:12,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:12,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:20:12,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770818641] [2024-11-18 16:20:12,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:12,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:20:12,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:12,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:20:12,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:12,361 INFO L87 Difference]: Start difference. First operand 6474 states and 9122 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:13,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:13,763 INFO L93 Difference]: Finished difference Result 14532 states and 22250 transitions. [2024-11-18 16:20:13,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:20:13,763 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2024-11-18 16:20:13,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:13,805 INFO L225 Difference]: With dead ends: 14532 [2024-11-18 16:20:13,806 INFO L226 Difference]: Without dead ends: 10689 [2024-11-18 16:20:13,817 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:20:13,818 INFO L432 NwaCegarLoop]: 917 mSDtfsCounter, 1397 mSDsluCounter, 2801 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 3718 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:13,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 3718 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 16:20:13,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10689 states. [2024-11-18 16:20:14,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10689 to 10425. [2024-11-18 16:20:14,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10425 states, 9373 states have (on average 1.4977061773178277) internal successors, (14038), 9464 states have internal predecessors, (14038), 623 states have call successors, (623), 298 states have call predecessors, (623), 427 states have return successors, (989), 678 states have call predecessors, (989), 620 states have call successors, (989) [2024-11-18 16:20:14,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10425 states to 10425 states and 15650 transitions. [2024-11-18 16:20:14,361 INFO L78 Accepts]: Start accepts. Automaton has 10425 states and 15650 transitions. Word has length 190 [2024-11-18 16:20:14,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:14,362 INFO L471 AbstractCegarLoop]: Abstraction has 10425 states and 15650 transitions. [2024-11-18 16:20:14,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:14,362 INFO L276 IsEmpty]: Start isEmpty. Operand 10425 states and 15650 transitions. [2024-11-18 16:20:14,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-18 16:20:14,368 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:14,368 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:20:14,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-18 16:20:14,369 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:14,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:14,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1999731539, now seen corresponding path program 1 times [2024-11-18 16:20:14,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:14,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091610164] [2024-11-18 16:20:14,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:14,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:14,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:14,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:14,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091610164] [2024-11-18 16:20:14,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091610164] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:14,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:14,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:20:14,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885200657] [2024-11-18 16:20:14,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:14,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:20:14,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:14,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:20:14,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:20:14,502 INFO L87 Difference]: Start difference. First operand 10425 states and 15650 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:15,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:15,501 INFO L93 Difference]: Finished difference Result 19879 states and 31628 transitions. [2024-11-18 16:20:15,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:20:15,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2024-11-18 16:20:15,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:15,559 INFO L225 Difference]: With dead ends: 19879 [2024-11-18 16:20:15,559 INFO L226 Difference]: Without dead ends: 12085 [2024-11-18 16:20:15,577 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:15,579 INFO L432 NwaCegarLoop]: 551 mSDtfsCounter, 1049 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 1465 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:15,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 1465 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:20:15,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12085 states. [2024-11-18 16:20:16,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12085 to 10425. [2024-11-18 16:20:16,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10425 states, 9373 states have (on average 1.4958924570575056) internal successors, (14021), 9464 states have internal predecessors, (14021), 623 states have call successors, (623), 298 states have call predecessors, (623), 427 states have return successors, (989), 678 states have call predecessors, (989), 620 states have call successors, (989) [2024-11-18 16:20:16,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10425 states to 10425 states and 15633 transitions. [2024-11-18 16:20:16,218 INFO L78 Accepts]: Start accepts. Automaton has 10425 states and 15633 transitions. Word has length 190 [2024-11-18 16:20:16,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:16,218 INFO L471 AbstractCegarLoop]: Abstraction has 10425 states and 15633 transitions. [2024-11-18 16:20:16,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:16,218 INFO L276 IsEmpty]: Start isEmpty. Operand 10425 states and 15633 transitions. [2024-11-18 16:20:16,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-18 16:20:16,224 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:16,224 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:20:16,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-18 16:20:16,225 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:16,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:16,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1950407595, now seen corresponding path program 1 times [2024-11-18 16:20:16,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:16,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769037947] [2024-11-18 16:20:16,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:16,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:16,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:16,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:16,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769037947] [2024-11-18 16:20:16,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769037947] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:16,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:16,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:20:16,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381389285] [2024-11-18 16:20:16,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:16,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:20:16,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:16,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:20:16,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:16,408 INFO L87 Difference]: Start difference. First operand 10425 states and 15633 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:18,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:18,028 INFO L93 Difference]: Finished difference Result 27487 states and 44201 transitions. [2024-11-18 16:20:18,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:20:18,029 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2024-11-18 16:20:18,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:18,105 INFO L225 Difference]: With dead ends: 27487 [2024-11-18 16:20:18,105 INFO L226 Difference]: Without dead ends: 19693 [2024-11-18 16:20:18,129 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:20:18,130 INFO L432 NwaCegarLoop]: 909 mSDtfsCounter, 1384 mSDsluCounter, 2778 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1415 SdHoareTripleChecker+Valid, 3687 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:18,131 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1415 Valid, 3687 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 16:20:18,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19693 states. [2024-11-18 16:20:18,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19693 to 19299. [2024-11-18 16:20:18,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19299 states, 17653 states have (on average 1.5718008270548915) internal successors, (27747), 17890 states have internal predecessors, (27747), 975 states have call successors, (975), 394 states have call predecessors, (975), 669 states have return successors, (2109), 1046 states have call predecessors, (2109), 972 states have call successors, (2109) [2024-11-18 16:20:19,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19299 states to 19299 states and 30831 transitions. [2024-11-18 16:20:19,034 INFO L78 Accepts]: Start accepts. Automaton has 19299 states and 30831 transitions. Word has length 190 [2024-11-18 16:20:19,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:19,034 INFO L471 AbstractCegarLoop]: Abstraction has 19299 states and 30831 transitions. [2024-11-18 16:20:19,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:19,034 INFO L276 IsEmpty]: Start isEmpty. Operand 19299 states and 30831 transitions. [2024-11-18 16:20:19,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-18 16:20:19,041 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:19,041 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:20:19,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-18 16:20:19,041 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:19,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:19,041 INFO L85 PathProgramCache]: Analyzing trace with hash -969452781, now seen corresponding path program 1 times [2024-11-18 16:20:19,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:19,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29916040] [2024-11-18 16:20:19,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:19,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:19,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:19,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:19,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29916040] [2024-11-18 16:20:19,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29916040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:19,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:19,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:20:19,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308086120] [2024-11-18 16:20:19,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:19,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:20:19,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:19,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:20:19,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:19,171 INFO L87 Difference]: Start difference. First operand 19299 states and 30831 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:21,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:21,398 INFO L93 Difference]: Finished difference Result 57213 states and 97037 transitions. [2024-11-18 16:20:21,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:20:21,399 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2024-11-18 16:20:21,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:21,539 INFO L225 Difference]: With dead ends: 57213 [2024-11-18 16:20:21,540 INFO L226 Difference]: Without dead ends: 40545 [2024-11-18 16:20:21,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:20:21,583 INFO L432 NwaCegarLoop]: 906 mSDtfsCounter, 1379 mSDsluCounter, 2769 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1410 SdHoareTripleChecker+Valid, 3675 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:21,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1410 Valid, 3675 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 16:20:21,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40545 states. [2024-11-18 16:20:23,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40545 to 39882. [2024-11-18 16:20:23,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39882 states, 36886 states have (on average 1.6365829854145204) internal successors, (60367), 37577 states have internal predecessors, (60367), 1679 states have call successors, (1679), 586 states have call predecessors, (1679), 1315 states have return successors, (5885), 1782 states have call predecessors, (5885), 1676 states have call successors, (5885) [2024-11-18 16:20:23,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39882 states to 39882 states and 67931 transitions. [2024-11-18 16:20:23,706 INFO L78 Accepts]: Start accepts. Automaton has 39882 states and 67931 transitions. Word has length 190 [2024-11-18 16:20:23,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:23,707 INFO L471 AbstractCegarLoop]: Abstraction has 39882 states and 67931 transitions. [2024-11-18 16:20:23,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:23,707 INFO L276 IsEmpty]: Start isEmpty. Operand 39882 states and 67931 transitions. [2024-11-18 16:20:23,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-18 16:20:23,718 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:23,718 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:20:23,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-18 16:20:23,719 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:23,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:23,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1556042901, now seen corresponding path program 1 times [2024-11-18 16:20:23,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:23,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630284511] [2024-11-18 16:20:23,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:23,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:23,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:23,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:23,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630284511] [2024-11-18 16:20:23,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630284511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:23,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:23,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:20:23,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780186189] [2024-11-18 16:20:23,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:23,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:20:23,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:23,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:20:23,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:23,888 INFO L87 Difference]: Start difference. First operand 39882 states and 67931 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:28,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:28,647 INFO L93 Difference]: Finished difference Result 127490 states and 230047 transitions. [2024-11-18 16:20:28,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:20:28,648 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2024-11-18 16:20:28,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:28,977 INFO L225 Difference]: With dead ends: 127490 [2024-11-18 16:20:28,977 INFO L226 Difference]: Without dead ends: 90239 [2024-11-18 16:20:29,090 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:20:29,090 INFO L432 NwaCegarLoop]: 603 mSDtfsCounter, 1419 mSDsluCounter, 2031 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1450 SdHoareTripleChecker+Valid, 2634 SdHoareTripleChecker+Invalid, 1258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:29,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1450 Valid, 2634 Invalid, 1258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 16:20:29,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90239 states. [2024-11-18 16:20:34,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90239 to 89067. [2024-11-18 16:20:34,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89067 states, 82885 states have (on average 1.6909573505459372) internal successors, (140155), 84970 states have internal predecessors, (140155), 3087 states have call successors, (3087), 970 states have call predecessors, (3087), 3093 states have return successors, (19581), 3254 states have call predecessors, (19581), 3084 states have call successors, (19581) [2024-11-18 16:20:34,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89067 states to 89067 states and 162823 transitions. [2024-11-18 16:20:34,781 INFO L78 Accepts]: Start accepts. Automaton has 89067 states and 162823 transitions. Word has length 190 [2024-11-18 16:20:34,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:34,781 INFO L471 AbstractCegarLoop]: Abstraction has 89067 states and 162823 transitions. [2024-11-18 16:20:34,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:34,782 INFO L276 IsEmpty]: Start isEmpty. Operand 89067 states and 162823 transitions. [2024-11-18 16:20:34,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-18 16:20:34,800 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:34,800 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:20:34,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-18 16:20:34,800 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:34,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:34,801 INFO L85 PathProgramCache]: Analyzing trace with hash 944773843, now seen corresponding path program 1 times [2024-11-18 16:20:34,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:34,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573178252] [2024-11-18 16:20:34,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:34,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:34,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:34,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:34,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573178252] [2024-11-18 16:20:34,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573178252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:34,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:34,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:20:34,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820557774] [2024-11-18 16:20:34,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:34,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:20:34,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:34,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:20:34,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:20:34,915 INFO L87 Difference]: Start difference. First operand 89067 states and 162823 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:41,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:41,243 INFO L93 Difference]: Finished difference Result 208338 states and 398358 transitions. [2024-11-18 16:20:41,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:20:41,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2024-11-18 16:20:41,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:41,696 INFO L225 Difference]: With dead ends: 208338 [2024-11-18 16:20:41,696 INFO L226 Difference]: Without dead ends: 121902 [2024-11-18 16:20:42,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:42,097 INFO L432 NwaCegarLoop]: 540 mSDtfsCounter, 1040 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:42,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 1431 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:20:42,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121902 states.