./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/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.03.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --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 4c3aab1156afcb98b97b027e9b66004d54025f3b89e95d6d35dc2e84fdb640d2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 20:32:14,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 20:32:14,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 20:32:14,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 20:32:14,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 20:32:14,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 20:32:14,324 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 20:32:14,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 20:32:14,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 20:32:14,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 20:32:14,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 20:32:14,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 20:32:14,334 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 20:32:14,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 20:32:14,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 20:32:14,354 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 20:32:14,355 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 20:32:14,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 20:32:14,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 20:32:14,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 20:32:14,363 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 20:32:14,363 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 20:32:14,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 20:32:14,364 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 20:32:14,365 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 20:32:14,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 20:32:14,367 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 20:32:14,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 20:32:14,369 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 20:32:14,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 20:32:14,370 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 20:32:14,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 20:32:14,372 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 20:32:14,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 20:32:14,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 20:32:14,373 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 20:32:14,373 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 20:32:14,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 20:32:14,374 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 20:32:14,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 20:32:14,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 20:32:14,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 20:32:14,376 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 20:32:14,414 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 20:32:14,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 20:32:14,416 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 20:32:14,416 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 20:32:14,417 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 20:32:14,417 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 20:32:14,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 20:32:14,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 20:32:14,423 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 20:32:14,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 20:32:14,424 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 20:32:14,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 20:32:14,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 20:32:14,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 20:32:14,424 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 20:32:14,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 20:32:14,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 20:32:14,425 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 20:32:14,425 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 20:32:14,425 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 20:32:14,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 20:32:14,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 20:32:14,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 20:32:14,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 20:32:14,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:32:14,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 20:32:14,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 20:32:14,426 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 20:32:14,426 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 20:32:14,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 20:32:14,427 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 20:32:14,427 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 20:32:14,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 20:32:14,427 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c3aab1156afcb98b97b027e9b66004d54025f3b89e95d6d35dc2e84fdb640d2 [2022-07-19 20:32:14,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 20:32:14,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 20:32:14,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 20:32:14,585 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 20:32:14,585 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 20:32:14,586 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-2.c [2022-07-19 20:32:14,625 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8522f4158/4efe5687d7304b9ba6e0cb46121a8f6d/FLAG744878641 [2022-07-19 20:32:15,031 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 20:32:15,044 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-2.c [2022-07-19 20:32:15,056 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8522f4158/4efe5687d7304b9ba6e0cb46121a8f6d/FLAG744878641 [2022-07-19 20:32:15,066 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8522f4158/4efe5687d7304b9ba6e0cb46121a8f6d [2022-07-19 20:32:15,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 20:32:15,069 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 20:32:15,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 20:32:15,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 20:32:15,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 20:32:15,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:32:15" (1/1) ... [2022-07-19 20:32:15,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d155f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:15, skipping insertion in model container [2022-07-19 20:32:15,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:32:15" (1/1) ... [2022-07-19 20:32:15,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 20:32:15,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 20:32:15,228 WARN L230 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.03.cil-2.c[914,927] [2022-07-19 20:32:15,257 WARN L230 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.03.cil-2.c[7115,7128] [2022-07-19 20:32:15,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:32:15,299 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 20:32:15,307 WARN L230 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.03.cil-2.c[914,927] [2022-07-19 20:32:15,319 WARN L230 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.03.cil-2.c[7115,7128] [2022-07-19 20:32:15,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:32:15,352 INFO L208 MainTranslator]: Completed translation [2022-07-19 20:32:15,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:15 WrapperNode [2022-07-19 20:32:15,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 20:32:15,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 20:32:15,354 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 20:32:15,354 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 20:32:15,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:15" (1/1) ... [2022-07-19 20:32:15,370 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:15" (1/1) ... [2022-07-19 20:32:15,394 INFO L137 Inliner]: procedures = 59, calls = 66, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 518 [2022-07-19 20:32:15,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 20:32:15,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 20:32:15,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 20:32:15,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 20:32:15,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:15" (1/1) ... [2022-07-19 20:32:15,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:15" (1/1) ... [2022-07-19 20:32:15,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:15" (1/1) ... [2022-07-19 20:32:15,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:15" (1/1) ... [2022-07-19 20:32:15,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:15" (1/1) ... [2022-07-19 20:32:15,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:15" (1/1) ... [2022-07-19 20:32:15,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:15" (1/1) ... [2022-07-19 20:32:15,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 20:32:15,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 20:32:15,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 20:32:15,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 20:32:15,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:15" (1/1) ... [2022-07-19 20:32:15,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:32:15,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:32:15,474 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 20:32:15,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 20:32:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 20:32:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-19 20:32:15,498 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-19 20:32:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-19 20:32:15,498 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-19 20:32:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-19 20:32:15,499 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-19 20:32:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-19 20:32:15,499 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-19 20:32:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-19 20:32:15,499 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-19 20:32:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-19 20:32:15,499 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-19 20:32:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-19 20:32:15,500 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-19 20:32:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-19 20:32:15,500 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-19 20:32:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-19 20:32:15,500 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-19 20:32:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-19 20:32:15,500 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-19 20:32:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-19 20:32:15,501 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-19 20:32:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 20:32:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-19 20:32:15,501 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-19 20:32:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-19 20:32:15,501 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-19 20:32:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 20:32:15,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 20:32:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-19 20:32:15,502 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-19 20:32:15,563 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 20:32:15,564 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 20:32:15,954 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 20:32:15,962 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 20:32:15,962 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-07-19 20:32:15,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:32:15 BoogieIcfgContainer [2022-07-19 20:32:15,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 20:32:15,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 20:32:15,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 20:32:15,978 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 20:32:15,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 08:32:15" (1/3) ... [2022-07-19 20:32:15,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@306a939d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:32:15, skipping insertion in model container [2022-07-19 20:32:15,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:15" (2/3) ... [2022-07-19 20:32:15,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@306a939d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:32:15, skipping insertion in model container [2022-07-19 20:32:15,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:32:15" (3/3) ... [2022-07-19 20:32:15,980 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.03.cil-2.c [2022-07-19 20:32:15,991 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 20:32:15,991 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 20:32:16,048 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 20:32:16,053 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@25bf1f2a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@f3b2822 [2022-07-19 20:32:16,053 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 20:32:16,064 INFO L276 IsEmpty]: Start isEmpty. Operand has 258 states, 210 states have (on average 1.5714285714285714) internal successors, (330), 216 states have internal predecessors, (330), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2022-07-19 20:32:16,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:32:16,074 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:16,074 INFO L195 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] [2022-07-19 20:32:16,075 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:16,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:16,079 INFO L85 PathProgramCache]: Analyzing trace with hash 2111945575, now seen corresponding path program 1 times [2022-07-19 20:32:16,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:16,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064746972] [2022-07-19 20:32:16,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:16,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:16,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:16,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:16,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:16,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:16,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:16,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:16,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:16,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:16,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:16,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:16,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:16,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064746972] [2022-07-19 20:32:16,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064746972] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:16,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:16,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:32:16,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278985844] [2022-07-19 20:32:16,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:16,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:32:16,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:16,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:32:16,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:32:16,375 INFO L87 Difference]: Start difference. First operand has 258 states, 210 states have (on average 1.5714285714285714) internal successors, (330), 216 states have internal predecessors, (330), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:32:16,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:16,994 INFO L93 Difference]: Finished difference Result 632 states and 960 transitions. [2022-07-19 20:32:16,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:32:16,996 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-19 20:32:16,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:17,005 INFO L225 Difference]: With dead ends: 632 [2022-07-19 20:32:17,005 INFO L226 Difference]: Without dead ends: 383 [2022-07-19 20:32:17,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:32:17,011 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 678 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:17,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 1214 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 20:32:17,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-07-19 20:32:17,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 344. [2022-07-19 20:32:17,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 278 states have (on average 1.4496402877697843) internal successors, (403), 284 states have internal predecessors, (403), 42 states have call successors, (42), 21 states have call predecessors, (42), 22 states have return successors, (45), 41 states have call predecessors, (45), 40 states have call successors, (45) [2022-07-19 20:32:17,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 490 transitions. [2022-07-19 20:32:17,069 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 490 transitions. Word has length 65 [2022-07-19 20:32:17,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:17,069 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 490 transitions. [2022-07-19 20:32:17,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:32:17,070 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 490 transitions. [2022-07-19 20:32:17,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:32:17,072 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:17,073 INFO L195 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] [2022-07-19 20:32:17,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 20:32:17,073 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:17,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:17,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1779235770, now seen corresponding path program 1 times [2022-07-19 20:32:17,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:17,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491907620] [2022-07-19 20:32:17,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:17,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:17,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:17,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:17,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:17,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:17,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:17,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:17,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:17,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:17,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:17,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:17,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:17,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:17,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:17,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:17,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491907620] [2022-07-19 20:32:17,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491907620] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:17,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:17,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:32:17,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041556428] [2022-07-19 20:32:17,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:17,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:32:17,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:17,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:32:17,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:32:17,169 INFO L87 Difference]: Start difference. First operand 344 states and 490 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:32:17,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:17,811 INFO L93 Difference]: Finished difference Result 691 states and 967 transitions. [2022-07-19 20:32:17,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 20:32:17,812 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-19 20:32:17,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:17,815 INFO L225 Difference]: With dead ends: 691 [2022-07-19 20:32:17,815 INFO L226 Difference]: Without dead ends: 514 [2022-07-19 20:32:17,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-19 20:32:17,817 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 726 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:17,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 1251 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 20:32:17,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-07-19 20:32:17,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 440. [2022-07-19 20:32:17,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 354 states have (on average 1.4322033898305084) internal successors, (507), 362 states have internal predecessors, (507), 53 states have call successors, (53), 28 states have call predecessors, (53), 31 states have return successors, (64), 53 states have call predecessors, (64), 51 states have call successors, (64) [2022-07-19 20:32:17,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 624 transitions. [2022-07-19 20:32:17,863 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 624 transitions. Word has length 65 [2022-07-19 20:32:17,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:17,863 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 624 transitions. [2022-07-19 20:32:17,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:32:17,863 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 624 transitions. [2022-07-19 20:32:17,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:32:17,870 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:17,870 INFO L195 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] [2022-07-19 20:32:17,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 20:32:17,870 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:17,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:17,870 INFO L85 PathProgramCache]: Analyzing trace with hash 487145416, now seen corresponding path program 1 times [2022-07-19 20:32:17,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:17,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182257440] [2022-07-19 20:32:17,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:17,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:17,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:17,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:17,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:17,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:17,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:17,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:17,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:18,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:18,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:18,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:18,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:18,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:18,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182257440] [2022-07-19 20:32:18,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182257440] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:18,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:18,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 20:32:18,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138854233] [2022-07-19 20:32:18,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:18,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 20:32:18,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:18,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 20:32:18,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:32:18,028 INFO L87 Difference]: Start difference. First operand 440 states and 624 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:32:18,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:18,540 INFO L93 Difference]: Finished difference Result 741 states and 1038 transitions. [2022-07-19 20:32:18,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 20:32:18,540 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-19 20:32:18,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:18,557 INFO L225 Difference]: With dead ends: 741 [2022-07-19 20:32:18,557 INFO L226 Difference]: Without dead ends: 474 [2022-07-19 20:32:18,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:32:18,566 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 429 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:18,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 1394 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 20:32:18,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-07-19 20:32:18,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 445. [2022-07-19 20:32:18,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 358 states have (on average 1.4217877094972067) internal successors, (509), 366 states have internal predecessors, (509), 53 states have call successors, (53), 28 states have call predecessors, (53), 32 states have return successors, (65), 54 states have call predecessors, (65), 51 states have call successors, (65) [2022-07-19 20:32:18,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 627 transitions. [2022-07-19 20:32:18,618 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 627 transitions. Word has length 65 [2022-07-19 20:32:18,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:18,619 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 627 transitions. [2022-07-19 20:32:18,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:32:18,619 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 627 transitions. [2022-07-19 20:32:18,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:32:18,620 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:18,635 INFO L195 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] [2022-07-19 20:32:18,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 20:32:18,636 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:18,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:18,636 INFO L85 PathProgramCache]: Analyzing trace with hash -542213882, now seen corresponding path program 1 times [2022-07-19 20:32:18,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:18,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523392339] [2022-07-19 20:32:18,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:18,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:18,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:18,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:18,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:18,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:18,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:18,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:18,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:18,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:18,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:18,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:18,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:18,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:18,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523392339] [2022-07-19 20:32:18,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523392339] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:18,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:18,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 20:32:18,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176226324] [2022-07-19 20:32:18,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:18,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 20:32:18,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:18,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 20:32:18,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:32:18,713 INFO L87 Difference]: Start difference. First operand 445 states and 627 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:32:19,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:19,230 INFO L93 Difference]: Finished difference Result 763 states and 1060 transitions. [2022-07-19 20:32:19,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 20:32:19,231 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-19 20:32:19,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:19,233 INFO L225 Difference]: With dead ends: 763 [2022-07-19 20:32:19,233 INFO L226 Difference]: Without dead ends: 491 [2022-07-19 20:32:19,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:32:19,235 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 430 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:19,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 1391 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 20:32:19,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-07-19 20:32:19,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 460. [2022-07-19 20:32:19,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 370 states have (on average 1.4081081081081082) internal successors, (521), 378 states have internal predecessors, (521), 53 states have call successors, (53), 28 states have call predecessors, (53), 35 states have return successors, (68), 57 states have call predecessors, (68), 51 states have call successors, (68) [2022-07-19 20:32:19,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 642 transitions. [2022-07-19 20:32:19,277 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 642 transitions. Word has length 65 [2022-07-19 20:32:19,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:19,278 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 642 transitions. [2022-07-19 20:32:19,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:32:19,278 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 642 transitions. [2022-07-19 20:32:19,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:32:19,280 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:19,280 INFO L195 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] [2022-07-19 20:32:19,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 20:32:19,280 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:19,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:19,281 INFO L85 PathProgramCache]: Analyzing trace with hash 843989512, now seen corresponding path program 1 times [2022-07-19 20:32:19,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:19,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12298971] [2022-07-19 20:32:19,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:19,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:19,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:19,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:19,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:19,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:19,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:19,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:19,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:19,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:19,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:19,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:19,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:19,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12298971] [2022-07-19 20:32:19,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12298971] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:19,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:19,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:32:19,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96717010] [2022-07-19 20:32:19,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:19,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:32:19,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:19,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:32:19,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:32:19,384 INFO L87 Difference]: Start difference. First operand 460 states and 642 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:32:19,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:19,691 INFO L93 Difference]: Finished difference Result 1074 states and 1461 transitions. [2022-07-19 20:32:19,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 20:32:19,692 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-19 20:32:19,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:19,695 INFO L225 Difference]: With dead ends: 1074 [2022-07-19 20:32:19,695 INFO L226 Difference]: Without dead ends: 790 [2022-07-19 20:32:19,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-19 20:32:19,696 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 680 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:19,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 989 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 20:32:19,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2022-07-19 20:32:19,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 738. [2022-07-19 20:32:19,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 584 states have (on average 1.3664383561643836) internal successors, (798), 599 states have internal predecessors, (798), 87 states have call successors, (87), 49 states have call predecessors, (87), 65 states have return successors, (126), 96 states have call predecessors, (126), 85 states have call successors, (126) [2022-07-19 20:32:19,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1011 transitions. [2022-07-19 20:32:19,720 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1011 transitions. Word has length 65 [2022-07-19 20:32:19,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:19,721 INFO L495 AbstractCegarLoop]: Abstraction has 738 states and 1011 transitions. [2022-07-19 20:32:19,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:32:19,721 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1011 transitions. [2022-07-19 20:32:19,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 20:32:19,723 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:19,723 INFO L195 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] [2022-07-19 20:32:19,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 20:32:19,723 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:19,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:19,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1077063563, now seen corresponding path program 1 times [2022-07-19 20:32:19,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:19,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993043524] [2022-07-19 20:32:19,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:19,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:19,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:19,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:19,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:19,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:19,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:19,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:19,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:19,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:19,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:19,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:19,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:19,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:19,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:19,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:19,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993043524] [2022-07-19 20:32:19,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993043524] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:19,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:19,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:32:19,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123320138] [2022-07-19 20:32:19,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:19,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:32:19,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:19,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:32:19,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:32:19,768 INFO L87 Difference]: Start difference. First operand 738 states and 1011 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:32:20,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:20,111 INFO L93 Difference]: Finished difference Result 1885 states and 2528 transitions. [2022-07-19 20:32:20,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 20:32:20,111 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-19 20:32:20,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:20,116 INFO L225 Difference]: With dead ends: 1885 [2022-07-19 20:32:20,117 INFO L226 Difference]: Without dead ends: 1302 [2022-07-19 20:32:20,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:32:20,121 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 650 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:20,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 806 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 20:32:20,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2022-07-19 20:32:20,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1195. [2022-07-19 20:32:20,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 943 states have (on average 1.335100742311771) internal successors, (1259), 961 states have internal predecessors, (1259), 130 states have call successors, (130), 91 states have call predecessors, (130), 120 states have return successors, (194), 149 states have call predecessors, (194), 128 states have call successors, (194) [2022-07-19 20:32:20,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1583 transitions. [2022-07-19 20:32:20,164 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1583 transitions. Word has length 66 [2022-07-19 20:32:20,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:20,164 INFO L495 AbstractCegarLoop]: Abstraction has 1195 states and 1583 transitions. [2022-07-19 20:32:20,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:32:20,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1583 transitions. [2022-07-19 20:32:20,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 20:32:20,166 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:20,166 INFO L195 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] [2022-07-19 20:32:20,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 20:32:20,166 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:20,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:20,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1759664074, now seen corresponding path program 1 times [2022-07-19 20:32:20,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:20,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089803031] [2022-07-19 20:32:20,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:20,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:20,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:20,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:20,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:20,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:20,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:20,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:20,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:20,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:20,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:20,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:20,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089803031] [2022-07-19 20:32:20,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089803031] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:20,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:20,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:32:20,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920612831] [2022-07-19 20:32:20,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:20,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:32:20,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:20,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:32:20,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:32:20,228 INFO L87 Difference]: Start difference. First operand 1195 states and 1583 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:32:20,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:20,502 INFO L93 Difference]: Finished difference Result 3275 states and 4283 transitions. [2022-07-19 20:32:20,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 20:32:20,502 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-19 20:32:20,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:20,511 INFO L225 Difference]: With dead ends: 3275 [2022-07-19 20:32:20,511 INFO L226 Difference]: Without dead ends: 2255 [2022-07-19 20:32:20,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-19 20:32:20,515 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 858 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:20,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 696 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 20:32:20,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2255 states. [2022-07-19 20:32:20,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2255 to 2065. [2022-07-19 20:32:20,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2065 states, 1613 states have (on average 1.2982021078735275) internal successors, (2094), 1645 states have internal predecessors, (2094), 228 states have call successors, (228), 175 states have call predecessors, (228), 222 states have return successors, (338), 251 states have call predecessors, (338), 226 states have call successors, (338) [2022-07-19 20:32:20,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2065 states to 2065 states and 2660 transitions. [2022-07-19 20:32:20,605 INFO L78 Accepts]: Start accepts. Automaton has 2065 states and 2660 transitions. Word has length 66 [2022-07-19 20:32:20,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:20,606 INFO L495 AbstractCegarLoop]: Abstraction has 2065 states and 2660 transitions. [2022-07-19 20:32:20,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:32:20,606 INFO L276 IsEmpty]: Start isEmpty. Operand 2065 states and 2660 transitions. [2022-07-19 20:32:20,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-19 20:32:20,607 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:20,608 INFO L195 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] [2022-07-19 20:32:20,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 20:32:20,608 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:20,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:20,608 INFO L85 PathProgramCache]: Analyzing trace with hash 825996842, now seen corresponding path program 1 times [2022-07-19 20:32:20,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:20,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101369020] [2022-07-19 20:32:20,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:20,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:20,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:20,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:20,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:20,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:20,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:20,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:20,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:20,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:20,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:20,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:20,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:20,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101369020] [2022-07-19 20:32:20,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101369020] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:20,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:20,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:32:20,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852673428] [2022-07-19 20:32:20,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:20,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:32:20,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:20,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:32:20,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:32:20,649 INFO L87 Difference]: Start difference. First operand 2065 states and 2660 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:32:20,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:20,993 INFO L93 Difference]: Finished difference Result 4911 states and 6260 transitions. [2022-07-19 20:32:20,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 20:32:20,994 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-07-19 20:32:20,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:21,005 INFO L225 Difference]: With dead ends: 4911 [2022-07-19 20:32:21,005 INFO L226 Difference]: Without dead ends: 3021 [2022-07-19 20:32:21,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:32:21,009 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 666 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:21,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 896 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 20:32:21,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2022-07-19 20:32:21,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 2801. [2022-07-19 20:32:21,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2801 states, 2183 states have (on average 1.2835547411818597) internal successors, (2802), 2225 states have internal predecessors, (2802), 308 states have call successors, (308), 245 states have call predecessors, (308), 308 states have return successors, (451), 337 states have call predecessors, (451), 306 states have call successors, (451) [2022-07-19 20:32:21,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 3561 transitions. [2022-07-19 20:32:21,096 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 3561 transitions. Word has length 72 [2022-07-19 20:32:21,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:21,096 INFO L495 AbstractCegarLoop]: Abstraction has 2801 states and 3561 transitions. [2022-07-19 20:32:21,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:32:21,096 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 3561 transitions. [2022-07-19 20:32:21,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-19 20:32:21,098 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:21,098 INFO L195 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] [2022-07-19 20:32:21,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 20:32:21,098 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:21,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:21,098 INFO L85 PathProgramCache]: Analyzing trace with hash -680171098, now seen corresponding path program 1 times [2022-07-19 20:32:21,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:21,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767517889] [2022-07-19 20:32:21,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:21,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:21,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:21,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:21,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:21,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:21,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:21,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:21,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:21,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:21,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:21,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:21,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:21,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:21,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767517889] [2022-07-19 20:32:21,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767517889] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:21,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:21,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:32:21,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373495841] [2022-07-19 20:32:21,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:21,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:32:21,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:21,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:32:21,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:32:21,176 INFO L87 Difference]: Start difference. First operand 2801 states and 3561 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-19 20:32:21,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:21,508 INFO L93 Difference]: Finished difference Result 3527 states and 4444 transitions. [2022-07-19 20:32:21,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 20:32:21,508 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-07-19 20:32:21,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:21,520 INFO L225 Difference]: With dead ends: 3527 [2022-07-19 20:32:21,520 INFO L226 Difference]: Without dead ends: 3524 [2022-07-19 20:32:21,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-07-19 20:32:21,521 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 1202 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:21,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1212 Valid, 710 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 20:32:21,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3524 states. [2022-07-19 20:32:21,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3524 to 3271. [2022-07-19 20:32:21,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3271 states, 2548 states have (on average 1.2770800627943486) internal successors, (3254), 2595 states have internal predecessors, (3254), 356 states have call successors, (356), 287 states have call predecessors, (356), 365 states have return successors, (528), 395 states have call predecessors, (528), 355 states have call successors, (528) [2022-07-19 20:32:21,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3271 states to 3271 states and 4138 transitions. [2022-07-19 20:32:21,638 INFO L78 Accepts]: Start accepts. Automaton has 3271 states and 4138 transitions. Word has length 73 [2022-07-19 20:32:21,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:21,638 INFO L495 AbstractCegarLoop]: Abstraction has 3271 states and 4138 transitions. [2022-07-19 20:32:21,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-19 20:32:21,639 INFO L276 IsEmpty]: Start isEmpty. Operand 3271 states and 4138 transitions. [2022-07-19 20:32:21,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-19 20:32:21,640 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:21,640 INFO L195 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] [2022-07-19 20:32:21,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 20:32:21,641 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:21,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:21,641 INFO L85 PathProgramCache]: Analyzing trace with hash 388759028, now seen corresponding path program 1 times [2022-07-19 20:32:21,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:21,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397814011] [2022-07-19 20:32:21,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:21,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:21,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:21,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:21,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:21,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:21,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:21,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:21,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:21,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:21,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:21,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:21,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:21,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:21,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:21,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397814011] [2022-07-19 20:32:21,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397814011] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:32:21,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210571135] [2022-07-19 20:32:21,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:21,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:32:21,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:32:21,707 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) [2022-07-19 20:32:21,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 20:32:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:21,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 20:32:21,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:32:22,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:22,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 20:32:22,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:22,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210571135] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 20:32:22,220 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 20:32:22,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-07-19 20:32:22,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998885552] [2022-07-19 20:32:22,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 20:32:22,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 20:32:22,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:22,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 20:32:22,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:32:22,221 INFO L87 Difference]: Start difference. First operand 3271 states and 4138 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-19 20:32:23,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:23,335 INFO L93 Difference]: Finished difference Result 7548 states and 9468 transitions. [2022-07-19 20:32:23,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-19 20:32:23,335 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2022-07-19 20:32:23,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:23,357 INFO L225 Difference]: With dead ends: 7548 [2022-07-19 20:32:23,358 INFO L226 Difference]: Without dead ends: 7545 [2022-07-19 20:32:23,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2022-07-19 20:32:23,360 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 1209 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1273 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 1754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:23,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1273 Valid, 1862 Invalid, 1754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1537 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 20:32:23,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7545 states. [2022-07-19 20:32:23,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7545 to 5017. [2022-07-19 20:32:23,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5017 states, 3914 states have (on average 1.275932549821155) internal successors, (4994), 3985 states have internal predecessors, (4994), 536 states have call successors, (536), 441 states have call predecessors, (536), 565 states have return successors, (806), 597 states have call predecessors, (806), 535 states have call successors, (806) [2022-07-19 20:32:23,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5017 states to 5017 states and 6336 transitions. [2022-07-19 20:32:23,585 INFO L78 Accepts]: Start accepts. Automaton has 5017 states and 6336 transitions. Word has length 74 [2022-07-19 20:32:23,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:23,585 INFO L495 AbstractCegarLoop]: Abstraction has 5017 states and 6336 transitions. [2022-07-19 20:32:23,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-19 20:32:23,586 INFO L276 IsEmpty]: Start isEmpty. Operand 5017 states and 6336 transitions. [2022-07-19 20:32:23,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-19 20:32:23,588 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:23,588 INFO L195 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] [2022-07-19 20:32:23,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 20:32:23,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-19 20:32:23,812 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:23,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:23,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1322076070, now seen corresponding path program 2 times [2022-07-19 20:32:23,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:23,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953882696] [2022-07-19 20:32:23,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:23,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:23,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:23,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:23,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:23,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:23,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:23,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:23,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:23,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:23,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:23,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:23,852 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:23,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:23,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953882696] [2022-07-19 20:32:23,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953882696] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:23,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:23,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:32:23,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589106465] [2022-07-19 20:32:23,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:23,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:32:23,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:23,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:32:23,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:32:23,854 INFO L87 Difference]: Start difference. First operand 5017 states and 6336 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-19 20:32:24,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:24,211 INFO L93 Difference]: Finished difference Result 7607 states and 9625 transitions. [2022-07-19 20:32:24,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 20:32:24,212 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-07-19 20:32:24,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:24,223 INFO L225 Difference]: With dead ends: 7607 [2022-07-19 20:32:24,223 INFO L226 Difference]: Without dead ends: 3644 [2022-07-19 20:32:24,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:32:24,229 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 726 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:24,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 817 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 20:32:24,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3644 states. [2022-07-19 20:32:24,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3644 to 3437. [2022-07-19 20:32:24,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3437 states, 2682 states have (on average 1.2580164056674124) internal successors, (3374), 2731 states have internal predecessors, (3374), 372 states have call successors, (372), 301 states have call predecessors, (372), 381 states have return successors, (536), 411 states have call predecessors, (536), 371 states have call successors, (536) [2022-07-19 20:32:24,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3437 states to 3437 states and 4282 transitions. [2022-07-19 20:32:24,356 INFO L78 Accepts]: Start accepts. Automaton has 3437 states and 4282 transitions. Word has length 77 [2022-07-19 20:32:24,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:24,356 INFO L495 AbstractCegarLoop]: Abstraction has 3437 states and 4282 transitions. [2022-07-19 20:32:24,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-19 20:32:24,357 INFO L276 IsEmpty]: Start isEmpty. Operand 3437 states and 4282 transitions. [2022-07-19 20:32:24,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-19 20:32:24,359 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:24,359 INFO L195 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] [2022-07-19 20:32:24,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 20:32:24,359 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:24,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:24,359 INFO L85 PathProgramCache]: Analyzing trace with hash -360800699, now seen corresponding path program 1 times [2022-07-19 20:32:24,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:24,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047171967] [2022-07-19 20:32:24,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:24,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:24,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:24,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:24,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 20:32:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:24,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:32:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:24,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:32:24,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:24,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:32:24,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:24,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:24,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:24,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047171967] [2022-07-19 20:32:24,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047171967] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:24,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:24,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:32:24,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412230971] [2022-07-19 20:32:24,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:24,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:32:24,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:24,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:32:24,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:32:24,428 INFO L87 Difference]: Start difference. First operand 3437 states and 4282 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:25,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:25,169 INFO L93 Difference]: Finished difference Result 3805 states and 4849 transitions. [2022-07-19 20:32:25,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 20:32:25,176 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-07-19 20:32:25,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:25,188 INFO L225 Difference]: With dead ends: 3805 [2022-07-19 20:32:25,188 INFO L226 Difference]: Without dead ends: 3664 [2022-07-19 20:32:25,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:32:25,190 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 736 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:25,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 918 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 20:32:25,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3664 states. [2022-07-19 20:32:25,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3664 to 3579. [2022-07-19 20:32:25,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3579 states, 2805 states have (on average 1.2695187165775401) internal successors, (3561), 2855 states have internal predecessors, (3561), 384 states have call successors, (384), 307 states have call predecessors, (384), 388 states have return successors, (551), 423 states have call predecessors, (551), 383 states have call successors, (551) [2022-07-19 20:32:25,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3579 states to 3579 states and 4496 transitions. [2022-07-19 20:32:25,359 INFO L78 Accepts]: Start accepts. Automaton has 3579 states and 4496 transitions. Word has length 79 [2022-07-19 20:32:25,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:25,360 INFO L495 AbstractCegarLoop]: Abstraction has 3579 states and 4496 transitions. [2022-07-19 20:32:25,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:25,360 INFO L276 IsEmpty]: Start isEmpty. Operand 3579 states and 4496 transitions. [2022-07-19 20:32:25,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-19 20:32:25,362 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:25,362 INFO L195 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] [2022-07-19 20:32:25,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 20:32:25,362 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:25,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:25,363 INFO L85 PathProgramCache]: Analyzing trace with hash -123752503, now seen corresponding path program 1 times [2022-07-19 20:32:25,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:25,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139078929] [2022-07-19 20:32:25,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:25,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:25,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:25,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:25,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 20:32:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:25,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:32:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:25,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:32:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:25,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:32:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:25,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:25,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:25,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139078929] [2022-07-19 20:32:25,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139078929] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:25,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:25,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:32:25,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70083287] [2022-07-19 20:32:25,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:25,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:32:25,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:25,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:32:25,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:32:25,413 INFO L87 Difference]: Start difference. First operand 3579 states and 4496 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:26,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:26,327 INFO L93 Difference]: Finished difference Result 4133 states and 5342 transitions. [2022-07-19 20:32:26,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:32:26,327 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-07-19 20:32:26,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:26,343 INFO L225 Difference]: With dead ends: 4133 [2022-07-19 20:32:26,343 INFO L226 Difference]: Without dead ends: 3850 [2022-07-19 20:32:26,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:32:26,345 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 729 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 1365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:26,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 1419 Invalid, 1365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 20:32:26,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3850 states. [2022-07-19 20:32:26,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3850 to 3712. [2022-07-19 20:32:26,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3712 states, 2919 states have (on average 1.277834874957177) internal successors, (3730), 2970 states have internal predecessors, (3730), 396 states have call successors, (396), 313 states have call predecessors, (396), 395 states have return successors, (565), 436 states have call predecessors, (565), 395 states have call successors, (565) [2022-07-19 20:32:26,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3712 states to 3712 states and 4691 transitions. [2022-07-19 20:32:26,481 INFO L78 Accepts]: Start accepts. Automaton has 3712 states and 4691 transitions. Word has length 79 [2022-07-19 20:32:26,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:26,482 INFO L495 AbstractCegarLoop]: Abstraction has 3712 states and 4691 transitions. [2022-07-19 20:32:26,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:26,482 INFO L276 IsEmpty]: Start isEmpty. Operand 3712 states and 4691 transitions. [2022-07-19 20:32:26,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-19 20:32:26,484 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:26,484 INFO L195 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] [2022-07-19 20:32:26,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 20:32:26,484 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:26,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:26,485 INFO L85 PathProgramCache]: Analyzing trace with hash -178145401, now seen corresponding path program 1 times [2022-07-19 20:32:26,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:26,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120904591] [2022-07-19 20:32:26,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:26,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:26,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:26,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:26,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 20:32:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:26,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:32:26,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:26,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:32:26,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:26,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:32:26,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:26,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:26,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:26,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120904591] [2022-07-19 20:32:26,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120904591] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:26,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:26,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:32:26,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476008858] [2022-07-19 20:32:26,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:26,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:32:26,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:26,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:32:26,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:32:26,537 INFO L87 Difference]: Start difference. First operand 3712 states and 4691 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:27,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:27,530 INFO L93 Difference]: Finished difference Result 4615 states and 6065 transitions. [2022-07-19 20:32:27,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:32:27,530 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-07-19 20:32:27,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:27,541 INFO L225 Difference]: With dead ends: 4615 [2022-07-19 20:32:27,541 INFO L226 Difference]: Without dead ends: 4199 [2022-07-19 20:32:27,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:32:27,544 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 726 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 1276 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:27,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 1411 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1276 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 20:32:27,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4199 states. [2022-07-19 20:32:27,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4199 to 3979. [2022-07-19 20:32:27,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3979 states, 3148 states have (on average 1.292566709021601) internal successors, (4069), 3201 states have internal predecessors, (4069), 420 states have call successors, (420), 325 states have call predecessors, (420), 409 states have return successors, (597), 462 states have call predecessors, (597), 419 states have call successors, (597) [2022-07-19 20:32:27,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3979 states to 3979 states and 5086 transitions. [2022-07-19 20:32:27,792 INFO L78 Accepts]: Start accepts. Automaton has 3979 states and 5086 transitions. Word has length 79 [2022-07-19 20:32:27,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:27,792 INFO L495 AbstractCegarLoop]: Abstraction has 3979 states and 5086 transitions. [2022-07-19 20:32:27,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:27,792 INFO L276 IsEmpty]: Start isEmpty. Operand 3979 states and 5086 transitions. [2022-07-19 20:32:27,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-19 20:32:27,795 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:27,795 INFO L195 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] [2022-07-19 20:32:27,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 20:32:27,795 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:27,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:27,795 INFO L85 PathProgramCache]: Analyzing trace with hash -595542007, now seen corresponding path program 1 times [2022-07-19 20:32:27,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:27,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075376244] [2022-07-19 20:32:27,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:27,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:27,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:27,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:27,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 20:32:27,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:27,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:32:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:27,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:32:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:27,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:32:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:27,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:27,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:27,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075376244] [2022-07-19 20:32:27,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075376244] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:27,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:27,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:32:27,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268951732] [2022-07-19 20:32:27,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:27,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:32:27,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:27,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:32:27,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:32:27,859 INFO L87 Difference]: Start difference. First operand 3979 states and 5086 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:28,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:28,452 INFO L93 Difference]: Finished difference Result 4872 states and 6453 transitions. [2022-07-19 20:32:28,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:32:28,452 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-07-19 20:32:28,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:28,460 INFO L225 Difference]: With dead ends: 4872 [2022-07-19 20:32:28,460 INFO L226 Difference]: Without dead ends: 4189 [2022-07-19 20:32:28,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:32:28,462 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 599 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:28,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [620 Valid, 906 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 20:32:28,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4189 states. [2022-07-19 20:32:28,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4189 to 3979. [2022-07-19 20:32:28,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3979 states, 3148 states have (on average 1.2909783989834815) internal successors, (4064), 3201 states have internal predecessors, (4064), 420 states have call successors, (420), 325 states have call predecessors, (420), 409 states have return successors, (597), 462 states have call predecessors, (597), 419 states have call successors, (597) [2022-07-19 20:32:28,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3979 states to 3979 states and 5081 transitions. [2022-07-19 20:32:28,608 INFO L78 Accepts]: Start accepts. Automaton has 3979 states and 5081 transitions. Word has length 79 [2022-07-19 20:32:28,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:28,608 INFO L495 AbstractCegarLoop]: Abstraction has 3979 states and 5081 transitions. [2022-07-19 20:32:28,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:28,609 INFO L276 IsEmpty]: Start isEmpty. Operand 3979 states and 5081 transitions. [2022-07-19 20:32:28,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-19 20:32:28,611 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:28,611 INFO L195 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] [2022-07-19 20:32:28,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 20:32:28,611 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:28,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:28,612 INFO L85 PathProgramCache]: Analyzing trace with hash 83730247, now seen corresponding path program 1 times [2022-07-19 20:32:28,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:28,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710870009] [2022-07-19 20:32:28,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:28,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:28,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:28,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:28,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:28,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 20:32:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:28,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:32:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:28,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:32:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:28,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:32:28,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:28,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:28,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:28,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710870009] [2022-07-19 20:32:28,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710870009] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:28,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:28,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:32:28,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412365982] [2022-07-19 20:32:28,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:28,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:32:28,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:28,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:32:28,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:32:28,673 INFO L87 Difference]: Start difference. First operand 3979 states and 5081 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:29,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:29,237 INFO L93 Difference]: Finished difference Result 4866 states and 6427 transitions. [2022-07-19 20:32:29,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:32:29,238 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-07-19 20:32:29,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:29,253 INFO L225 Difference]: With dead ends: 4866 [2022-07-19 20:32:29,253 INFO L226 Difference]: Without dead ends: 4183 [2022-07-19 20:32:29,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:32:29,258 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 718 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:29,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 760 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 20:32:29,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4183 states. [2022-07-19 20:32:29,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4183 to 3979. [2022-07-19 20:32:29,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3979 states, 3148 states have (on average 1.2893900889453622) internal successors, (4059), 3201 states have internal predecessors, (4059), 420 states have call successors, (420), 325 states have call predecessors, (420), 409 states have return successors, (597), 462 states have call predecessors, (597), 419 states have call successors, (597) [2022-07-19 20:32:29,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3979 states to 3979 states and 5076 transitions. [2022-07-19 20:32:29,410 INFO L78 Accepts]: Start accepts. Automaton has 3979 states and 5076 transitions. Word has length 79 [2022-07-19 20:32:29,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:29,410 INFO L495 AbstractCegarLoop]: Abstraction has 3979 states and 5076 transitions. [2022-07-19 20:32:29,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:29,410 INFO L276 IsEmpty]: Start isEmpty. Operand 3979 states and 5076 transitions. [2022-07-19 20:32:29,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-19 20:32:29,413 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:29,413 INFO L195 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] [2022-07-19 20:32:29,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 20:32:29,413 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:29,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:29,414 INFO L85 PathProgramCache]: Analyzing trace with hash 2045304905, now seen corresponding path program 1 times [2022-07-19 20:32:29,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:29,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794757305] [2022-07-19 20:32:29,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:29,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:29,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:29,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 20:32:29,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:29,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:32:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:29,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:32:29,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:29,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:32:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:29,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:29,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:29,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794757305] [2022-07-19 20:32:29,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794757305] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:29,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:29,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:32:29,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862673228] [2022-07-19 20:32:29,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:29,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:32:29,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:29,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:32:29,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:32:29,467 INFO L87 Difference]: Start difference. First operand 3979 states and 5076 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:30,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:30,525 INFO L93 Difference]: Finished difference Result 5687 states and 7616 transitions. [2022-07-19 20:32:30,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:32:30,526 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-07-19 20:32:30,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:30,539 INFO L225 Difference]: With dead ends: 5687 [2022-07-19 20:32:30,540 INFO L226 Difference]: Without dead ends: 5004 [2022-07-19 20:32:30,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:32:30,543 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 804 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:30,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 1379 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 20:32:30,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5004 states. [2022-07-19 20:32:30,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5004 to 4490. [2022-07-19 20:32:30,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 3587 states have (on average 1.3100083635349875) internal successors, (4699), 3644 states have internal predecessors, (4699), 464 states have call successors, (464), 349 states have call predecessors, (464), 437 states have return successors, (663), 510 states have call predecessors, (663), 463 states have call successors, (663) [2022-07-19 20:32:30,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 5826 transitions. [2022-07-19 20:32:30,772 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 5826 transitions. Word has length 79 [2022-07-19 20:32:30,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:30,772 INFO L495 AbstractCegarLoop]: Abstraction has 4490 states and 5826 transitions. [2022-07-19 20:32:30,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:30,772 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 5826 transitions. [2022-07-19 20:32:30,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-19 20:32:30,775 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:30,775 INFO L195 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] [2022-07-19 20:32:30,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 20:32:30,775 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:30,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:30,776 INFO L85 PathProgramCache]: Analyzing trace with hash -2047838457, now seen corresponding path program 1 times [2022-07-19 20:32:30,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:30,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129237340] [2022-07-19 20:32:30,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:30,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:30,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:30,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:30,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:30,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 20:32:30,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:30,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:32:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:30,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:32:30,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:30,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:32:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:30,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:30,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:30,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129237340] [2022-07-19 20:32:30,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129237340] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:30,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:30,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:32:30,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066518325] [2022-07-19 20:32:30,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:30,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:32:30,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:30,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:32:30,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:32:30,821 INFO L87 Difference]: Start difference. First operand 4490 states and 5826 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:31,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:31,366 INFO L93 Difference]: Finished difference Result 5993 states and 8077 transitions. [2022-07-19 20:32:31,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:32:31,366 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-07-19 20:32:31,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:31,377 INFO L225 Difference]: With dead ends: 5993 [2022-07-19 20:32:31,377 INFO L226 Difference]: Without dead ends: 4799 [2022-07-19 20:32:31,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:32:31,381 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 704 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:31,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 758 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 20:32:31,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4799 states. [2022-07-19 20:32:31,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4799 to 4490. [2022-07-19 20:32:31,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 3587 states have (on average 1.307499303038751) internal successors, (4690), 3644 states have internal predecessors, (4690), 464 states have call successors, (464), 349 states have call predecessors, (464), 437 states have return successors, (663), 510 states have call predecessors, (663), 463 states have call successors, (663) [2022-07-19 20:32:31,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 5817 transitions. [2022-07-19 20:32:31,600 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 5817 transitions. Word has length 79 [2022-07-19 20:32:31,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:31,600 INFO L495 AbstractCegarLoop]: Abstraction has 4490 states and 5817 transitions. [2022-07-19 20:32:31,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:31,600 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 5817 transitions. [2022-07-19 20:32:31,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-19 20:32:31,603 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:31,603 INFO L195 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] [2022-07-19 20:32:31,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 20:32:31,603 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:31,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:31,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1614109371, now seen corresponding path program 1 times [2022-07-19 20:32:31,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:31,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773718370] [2022-07-19 20:32:31,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:31,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:31,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:31,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 20:32:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:31,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:32:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:31,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:32:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:31,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:32:31,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:31,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:31,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:31,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773718370] [2022-07-19 20:32:31,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773718370] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:31,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:31,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:32:31,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703865889] [2022-07-19 20:32:31,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:31,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:32:31,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:31,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:32:31,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:32:31,669 INFO L87 Difference]: Start difference. First operand 4490 states and 5817 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:32,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:32,525 INFO L93 Difference]: Finished difference Result 6494 states and 8795 transitions. [2022-07-19 20:32:32,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 20:32:32,525 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-07-19 20:32:32,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:32,540 INFO L225 Difference]: With dead ends: 6494 [2022-07-19 20:32:32,540 INFO L226 Difference]: Without dead ends: 5301 [2022-07-19 20:32:32,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-07-19 20:32:32,545 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 457 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:32,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 1164 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 20:32:32,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5301 states. [2022-07-19 20:32:32,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5301 to 4517. [2022-07-19 20:32:32,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4517 states, 3614 states have (on average 1.305201992252352) internal successors, (4717), 3671 states have internal predecessors, (4717), 464 states have call successors, (464), 349 states have call predecessors, (464), 437 states have return successors, (663), 510 states have call predecessors, (663), 463 states have call successors, (663) [2022-07-19 20:32:32,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4517 states to 4517 states and 5844 transitions. [2022-07-19 20:32:32,736 INFO L78 Accepts]: Start accepts. Automaton has 4517 states and 5844 transitions. Word has length 79 [2022-07-19 20:32:32,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:32,736 INFO L495 AbstractCegarLoop]: Abstraction has 4517 states and 5844 transitions. [2022-07-19 20:32:32,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:32,736 INFO L276 IsEmpty]: Start isEmpty. Operand 4517 states and 5844 transitions. [2022-07-19 20:32:32,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-19 20:32:32,739 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:32,739 INFO L195 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] [2022-07-19 20:32:32,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 20:32:32,739 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:32,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:32,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1629628089, now seen corresponding path program 1 times [2022-07-19 20:32:32,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:32,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062953928] [2022-07-19 20:32:32,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:32,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:32,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:32,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 20:32:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:32,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:32:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:32,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:32:32,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:32,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:32:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:32,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:32,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:32,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062953928] [2022-07-19 20:32:32,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062953928] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:32,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:32,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:32:32,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72801358] [2022-07-19 20:32:32,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:32,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:32:32,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:32,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:32:32,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:32:32,799 INFO L87 Difference]: Start difference. First operand 4517 states and 5844 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:34,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:34,333 INFO L93 Difference]: Finished difference Result 8926 states and 12553 transitions. [2022-07-19 20:32:34,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 20:32:34,334 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-07-19 20:32:34,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:34,350 INFO L225 Difference]: With dead ends: 8926 [2022-07-19 20:32:34,351 INFO L226 Difference]: Without dead ends: 7706 [2022-07-19 20:32:34,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-07-19 20:32:34,358 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 1530 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 1605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:34,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1553 Valid, 1260 Invalid, 1605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 20:32:34,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7706 states. [2022-07-19 20:32:34,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7706 to 6883. [2022-07-19 20:32:34,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6883 states, 5637 states have (on average 1.35249246052865) internal successors, (7624), 5725 states have internal predecessors, (7624), 677 states have call successors, (677), 463 states have call predecessors, (677), 567 states have return successors, (1012), 708 states have call predecessors, (1012), 676 states have call successors, (1012) [2022-07-19 20:32:34,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6883 states to 6883 states and 9313 transitions. [2022-07-19 20:32:34,698 INFO L78 Accepts]: Start accepts. Automaton has 6883 states and 9313 transitions. Word has length 79 [2022-07-19 20:32:34,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:34,698 INFO L495 AbstractCegarLoop]: Abstraction has 6883 states and 9313 transitions. [2022-07-19 20:32:34,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:34,698 INFO L276 IsEmpty]: Start isEmpty. Operand 6883 states and 9313 transitions. [2022-07-19 20:32:34,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-19 20:32:34,701 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:34,701 INFO L195 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] [2022-07-19 20:32:34,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 20:32:34,701 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:34,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:34,702 INFO L85 PathProgramCache]: Analyzing trace with hash -40676858, now seen corresponding path program 1 times [2022-07-19 20:32:34,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:34,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876921841] [2022-07-19 20:32:34,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:34,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:34,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:34,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:34,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:34,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:34,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:34,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:34,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:34,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:34,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:34,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 20:32:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:34,744 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 20:32:34,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:34,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876921841] [2022-07-19 20:32:34,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876921841] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:34,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:34,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:32:34,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262094241] [2022-07-19 20:32:34,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:34,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:32:34,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:34,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:32:34,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:32:34,745 INFO L87 Difference]: Start difference. First operand 6883 states and 9313 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 20:32:35,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:35,868 INFO L93 Difference]: Finished difference Result 13587 states and 17596 transitions. [2022-07-19 20:32:35,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 20:32:35,868 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2022-07-19 20:32:35,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:35,896 INFO L225 Difference]: With dead ends: 13587 [2022-07-19 20:32:35,896 INFO L226 Difference]: Without dead ends: 9006 [2022-07-19 20:32:35,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-07-19 20:32:35,903 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 697 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 1494 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:35,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 1494 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 20:32:35,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9006 states. [2022-07-19 20:32:36,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9006 to 8730. [2022-07-19 20:32:36,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8730 states, 7037 states have (on average 1.320306948983942) internal successors, (9291), 7170 states have internal predecessors, (9291), 875 states have call successors, (875), 631 states have call predecessors, (875), 816 states have return successors, (1392), 942 states have call predecessors, (1392), 874 states have call successors, (1392) [2022-07-19 20:32:36,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8730 states to 8730 states and 11558 transitions. [2022-07-19 20:32:36,315 INFO L78 Accepts]: Start accepts. Automaton has 8730 states and 11558 transitions. Word has length 84 [2022-07-19 20:32:36,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:36,316 INFO L495 AbstractCegarLoop]: Abstraction has 8730 states and 11558 transitions. [2022-07-19 20:32:36,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 20:32:36,316 INFO L276 IsEmpty]: Start isEmpty. Operand 8730 states and 11558 transitions. [2022-07-19 20:32:36,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-19 20:32:36,321 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:36,321 INFO L195 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] [2022-07-19 20:32:36,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 20:32:36,322 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:36,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:36,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1005107396, now seen corresponding path program 1 times [2022-07-19 20:32:36,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:36,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754466193] [2022-07-19 20:32:36,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:36,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:36,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:36,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:36,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:36,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:36,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:36,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:36,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:36,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:36,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:36,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 20:32:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:36,371 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 20:32:36,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:36,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754466193] [2022-07-19 20:32:36,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754466193] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:36,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:36,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 20:32:36,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197105678] [2022-07-19 20:32:36,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:36,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 20:32:36,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:36,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 20:32:36,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:32:36,373 INFO L87 Difference]: Start difference. First operand 8730 states and 11558 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 20:32:37,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:37,451 INFO L93 Difference]: Finished difference Result 12671 states and 16344 transitions. [2022-07-19 20:32:37,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 20:32:37,451 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2022-07-19 20:32:37,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:37,474 INFO L225 Difference]: With dead ends: 12671 [2022-07-19 20:32:37,474 INFO L226 Difference]: Without dead ends: 8208 [2022-07-19 20:32:37,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-07-19 20:32:37,483 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 1521 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 402 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1562 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 402 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:37,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1562 Valid, 1343 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [402 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 20:32:37,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8208 states. [2022-07-19 20:32:37,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8208 to 7896. [2022-07-19 20:32:37,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7896 states, 6403 states have (on average 1.3218803685772293) internal successors, (8464), 6515 states have internal predecessors, (8464), 784 states have call successors, (784), 554 states have call predecessors, (784), 707 states have return successors, (1172), 840 states have call predecessors, (1172), 783 states have call successors, (1172) [2022-07-19 20:32:37,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7896 states to 7896 states and 10420 transitions. [2022-07-19 20:32:37,946 INFO L78 Accepts]: Start accepts. Automaton has 7896 states and 10420 transitions. Word has length 93 [2022-07-19 20:32:37,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:37,946 INFO L495 AbstractCegarLoop]: Abstraction has 7896 states and 10420 transitions. [2022-07-19 20:32:37,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 20:32:37,947 INFO L276 IsEmpty]: Start isEmpty. Operand 7896 states and 10420 transitions. [2022-07-19 20:32:37,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-19 20:32:37,955 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:37,955 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 20:32:37,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 20:32:37,956 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:37,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:37,956 INFO L85 PathProgramCache]: Analyzing trace with hash -834500451, now seen corresponding path program 1 times [2022-07-19 20:32:37,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:37,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705817444] [2022-07-19 20:32:37,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:37,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:37,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:37,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:37,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:37,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 20:32:37,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:37,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:32:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:38,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:32:38,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:38,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:32:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:38,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 20:32:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:38,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 20:32:38,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:38,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 20:32:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:38,018 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-19 20:32:38,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:38,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705817444] [2022-07-19 20:32:38,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705817444] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:32:38,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351538167] [2022-07-19 20:32:38,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:38,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:32:38,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:32:38,035 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) [2022-07-19 20:32:38,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 20:32:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:38,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 20:32:38,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:32:38,169 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-19 20:32:38,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 20:32:38,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351538167] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:38,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 20:32:38,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-19 20:32:38,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895494397] [2022-07-19 20:32:38,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:38,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:32:38,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:38,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:32:38,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:32:38,172 INFO L87 Difference]: Start difference. First operand 7896 states and 10420 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:32:38,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:38,652 INFO L93 Difference]: Finished difference Result 14927 states and 20872 transitions. [2022-07-19 20:32:38,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:32:38,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 128 [2022-07-19 20:32:38,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:38,675 INFO L225 Difference]: With dead ends: 14927 [2022-07-19 20:32:38,676 INFO L226 Difference]: Without dead ends: 11341 [2022-07-19 20:32:38,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:32:38,686 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 298 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:38,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 555 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:32:38,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11341 states. [2022-07-19 20:32:39,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11341 to 11283. [2022-07-19 20:32:39,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11283 states, 9308 states have (on average 1.3579716373012463) internal successors, (12640), 9459 states have internal predecessors, (12640), 1074 states have call successors, (1074), 722 states have call predecessors, (1074), 899 states have return successors, (1611), 1115 states have call predecessors, (1611), 1073 states have call successors, (1611) [2022-07-19 20:32:39,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11283 states to 11283 states and 15325 transitions. [2022-07-19 20:32:39,250 INFO L78 Accepts]: Start accepts. Automaton has 11283 states and 15325 transitions. Word has length 128 [2022-07-19 20:32:39,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:39,251 INFO L495 AbstractCegarLoop]: Abstraction has 11283 states and 15325 transitions. [2022-07-19 20:32:39,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:32:39,251 INFO L276 IsEmpty]: Start isEmpty. Operand 11283 states and 15325 transitions. [2022-07-19 20:32:39,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-19 20:32:39,260 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:39,261 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 20:32:39,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 20:32:39,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-07-19 20:32:39,469 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:39,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:39,470 INFO L85 PathProgramCache]: Analyzing trace with hash 2033886077, now seen corresponding path program 1 times [2022-07-19 20:32:39,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:39,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748085933] [2022-07-19 20:32:39,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:39,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:39,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:39,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:39,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:39,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 20:32:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:39,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:32:39,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:39,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:32:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:39,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:32:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:39,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 20:32:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:39,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 20:32:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:39,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 20:32:39,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:39,547 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-19 20:32:39,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:39,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748085933] [2022-07-19 20:32:39,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748085933] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:32:39,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965199646] [2022-07-19 20:32:39,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:39,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:32:39,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:32:39,562 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) [2022-07-19 20:32:39,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 20:32:39,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:39,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 20:32:39,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:32:39,662 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-19 20:32:39,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 20:32:39,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965199646] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:39,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 20:32:39,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-19 20:32:39,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824803311] [2022-07-19 20:32:39,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:39,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:32:39,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:39,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:32:39,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:32:39,665 INFO L87 Difference]: Start difference. First operand 11283 states and 15325 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 20:32:40,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:40,443 INFO L93 Difference]: Finished difference Result 24946 states and 35355 transitions. [2022-07-19 20:32:40,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:32:40,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 128 [2022-07-19 20:32:40,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:40,471 INFO L225 Difference]: With dead ends: 24946 [2022-07-19 20:32:40,471 INFO L226 Difference]: Without dead ends: 12552 [2022-07-19 20:32:40,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:32:40,498 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 191 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:40,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 891 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:32:40,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12552 states. [2022-07-19 20:32:41,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12552 to 12552. [2022-07-19 20:32:41,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12552 states, 10402 states have (on average 1.3653143626225726) internal successors, (14202), 10561 states have internal predecessors, (14202), 1181 states have call successors, (1181), 782 states have call predecessors, (1181), 967 states have return successors, (1785), 1222 states have call predecessors, (1785), 1180 states have call successors, (1785) [2022-07-19 20:32:41,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12552 states to 12552 states and 17168 transitions. [2022-07-19 20:32:41,246 INFO L78 Accepts]: Start accepts. Automaton has 12552 states and 17168 transitions. Word has length 128 [2022-07-19 20:32:41,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:41,247 INFO L495 AbstractCegarLoop]: Abstraction has 12552 states and 17168 transitions. [2022-07-19 20:32:41,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 20:32:41,247 INFO L276 IsEmpty]: Start isEmpty. Operand 12552 states and 17168 transitions. [2022-07-19 20:32:41,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-19 20:32:41,257 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:41,258 INFO L195 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] [2022-07-19 20:32:41,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 20:32:41,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:32:41,466 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:41,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:41,466 INFO L85 PathProgramCache]: Analyzing trace with hash 45573472, now seen corresponding path program 1 times [2022-07-19 20:32:41,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:41,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680342012] [2022-07-19 20:32:41,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:41,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:41,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:41,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:41,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:41,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:41,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:41,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:41,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:41,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:41,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:41,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:41,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:41,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:41,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 20:32:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:41,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 20:32:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:41,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 20:32:41,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:41,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 20:32:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:41,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:41,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:41,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:41,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 20:32:41,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:41,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 20:32:41,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:41,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 20:32:41,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:41,574 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-19 20:32:41,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:41,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680342012] [2022-07-19 20:32:41,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680342012] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:32:41,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165253494] [2022-07-19 20:32:41,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:41,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:32:41,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:32:41,587 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) [2022-07-19 20:32:41,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 20:32:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:41,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 20:32:41,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:32:41,707 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 20:32:41,707 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 20:32:41,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165253494] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:41,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 20:32:41,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-07-19 20:32:41,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885015677] [2022-07-19 20:32:41,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:41,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:32:41,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:41,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:32:41,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-19 20:32:41,708 INFO L87 Difference]: Start difference. First operand 12552 states and 17168 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) [2022-07-19 20:32:42,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:42,183 INFO L93 Difference]: Finished difference Result 14706 states and 19787 transitions. [2022-07-19 20:32:42,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:32:42,184 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 [2022-07-19 20:32:42,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:42,203 INFO L225 Difference]: With dead ends: 14706 [2022-07-19 20:32:42,203 INFO L226 Difference]: Without dead ends: 10435 [2022-07-19 20:32:42,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-19 20:32:42,210 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 34 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1715 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:42,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1715 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:32:42,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10435 states. [2022-07-19 20:32:42,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10435 to 10310. [2022-07-19 20:32:42,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10310 states, 8734 states have (on average 1.3929471032745593) internal successors, (12166), 8841 states have internal predecessors, (12166), 907 states have call successors, (907), 550 states have call predecessors, (907), 667 states have return successors, (1388), 926 states have call predecessors, (1388), 906 states have call successors, (1388) [2022-07-19 20:32:42,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10310 states to 10310 states and 14461 transitions. [2022-07-19 20:32:42,677 INFO L78 Accepts]: Start accepts. Automaton has 10310 states and 14461 transitions. Word has length 145 [2022-07-19 20:32:42,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:42,677 INFO L495 AbstractCegarLoop]: Abstraction has 10310 states and 14461 transitions. [2022-07-19 20:32:42,677 INFO L496 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) [2022-07-19 20:32:42,677 INFO L276 IsEmpty]: Start isEmpty. Operand 10310 states and 14461 transitions. [2022-07-19 20:32:42,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-19 20:32:42,686 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:42,687 INFO L195 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] [2022-07-19 20:32:42,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 20:32:42,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:32:42,904 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:42,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:42,904 INFO L85 PathProgramCache]: Analyzing trace with hash 37593864, now seen corresponding path program 1 times [2022-07-19 20:32:42,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:42,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84268615] [2022-07-19 20:32:42,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:42,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:42,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:42,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:42,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:42,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:42,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:42,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:42,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:42,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:42,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:42,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 20:32:42,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:42,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 20:32:42,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:42,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 20:32:42,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:42,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 20:32:42,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:42,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:42,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:42,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 20:32:42,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:42,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 20:32:42,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:42,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-19 20:32:42,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:42,944 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-19 20:32:42,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:42,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84268615] [2022-07-19 20:32:42,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84268615] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:42,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:42,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:32:42,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349626214] [2022-07-19 20:32:42,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:42,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:32:42,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:42,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:32:42,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:32:42,946 INFO L87 Difference]: Start difference. First operand 10310 states and 14461 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 20:32:43,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:43,607 INFO L93 Difference]: Finished difference Result 10367 states and 14521 transitions. [2022-07-19 20:32:43,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:32:43,608 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 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 [2022-07-19 20:32:43,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:43,625 INFO L225 Difference]: With dead ends: 10367 [2022-07-19 20:32:43,625 INFO L226 Difference]: Without dead ends: 9918 [2022-07-19 20:32:43,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:32:43,628 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 516 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:43,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 744 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 20:32:43,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9918 states. [2022-07-19 20:32:44,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9918 to 9864. [2022-07-19 20:32:44,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9864 states, 8387 states have (on average 1.4016930964588052) internal successors, (11756), 8488 states have internal predecessors, (11756), 861 states have call successors, (861), 510 states have call predecessors, (861), 614 states have return successors, (1319), 873 states have call predecessors, (1319), 860 states have call successors, (1319) [2022-07-19 20:32:44,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9864 states to 9864 states and 13936 transitions. [2022-07-19 20:32:44,076 INFO L78 Accepts]: Start accepts. Automaton has 9864 states and 13936 transitions. Word has length 147 [2022-07-19 20:32:44,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:44,077 INFO L495 AbstractCegarLoop]: Abstraction has 9864 states and 13936 transitions. [2022-07-19 20:32:44,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 20:32:44,077 INFO L276 IsEmpty]: Start isEmpty. Operand 9864 states and 13936 transitions. [2022-07-19 20:32:44,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-19 20:32:44,086 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:44,087 INFO L195 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] [2022-07-19 20:32:44,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-19 20:32:44,087 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:44,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:44,087 INFO L85 PathProgramCache]: Analyzing trace with hash 644674118, now seen corresponding path program 1 times [2022-07-19 20:32:44,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:44,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110334681] [2022-07-19 20:32:44,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:44,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:44,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:44,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:44,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:44,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:44,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:44,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:44,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:44,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:44,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:44,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 20:32:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:44,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 20:32:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:44,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 20:32:44,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:44,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 20:32:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:44,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:44,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:44,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-19 20:32:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:44,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-19 20:32:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:44,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 20:32:44,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:44,137 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-19 20:32:44,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:44,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110334681] [2022-07-19 20:32:44,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110334681] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:44,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:44,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:32:44,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558651155] [2022-07-19 20:32:44,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:44,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:32:44,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:44,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:32:44,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:32:44,139 INFO L87 Difference]: Start difference. First operand 9864 states and 13936 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-19 20:32:44,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:44,891 INFO L93 Difference]: Finished difference Result 11341 states and 15735 transitions. [2022-07-19 20:32:44,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 20:32:44,892 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 159 [2022-07-19 20:32:44,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:44,910 INFO L225 Difference]: With dead ends: 11341 [2022-07-19 20:32:44,910 INFO L226 Difference]: Without dead ends: 9985 [2022-07-19 20:32:44,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:32:44,915 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 312 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:44,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 1235 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 20:32:44,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9985 states. [2022-07-19 20:32:45,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9985 to 9793. [2022-07-19 20:32:45,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9793 states, 8336 states have (on average 1.4019913627639156) internal successors, (11687), 8436 states have internal predecessors, (11687), 854 states have call successors, (854), 507 states have call predecessors, (854), 601 states have return successors, (1301), 857 states have call predecessors, (1301), 853 states have call successors, (1301) [2022-07-19 20:32:45,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9793 states to 9793 states and 13842 transitions. [2022-07-19 20:32:45,361 INFO L78 Accepts]: Start accepts. Automaton has 9793 states and 13842 transitions. Word has length 159 [2022-07-19 20:32:45,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:45,361 INFO L495 AbstractCegarLoop]: Abstraction has 9793 states and 13842 transitions. [2022-07-19 20:32:45,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-19 20:32:45,362 INFO L276 IsEmpty]: Start isEmpty. Operand 9793 states and 13842 transitions. [2022-07-19 20:32:45,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-19 20:32:45,371 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:45,371 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:45,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-19 20:32:45,371 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:45,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:45,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1611156349, now seen corresponding path program 1 times [2022-07-19 20:32:45,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:45,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700053211] [2022-07-19 20:32:45,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:45,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:45,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:45,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:45,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:45,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:45,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:45,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:45,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:45,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:45,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:45,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:45,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:45,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:45,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:45,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 20:32:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:45,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 20:32:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:45,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 20:32:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:45,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 20:32:45,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:45,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:45,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:45,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 20:32:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:45,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-19 20:32:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:45,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 20:32:45,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:45,440 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-19 20:32:45,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:45,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700053211] [2022-07-19 20:32:45,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700053211] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:32:45,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883873500] [2022-07-19 20:32:45,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:45,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:32:45,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:32:45,442 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:32:45,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 20:32:45,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:45,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-19 20:32:45,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:32:45,638 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-19 20:32:45,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 20:32:45,849 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-19 20:32:45,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883873500] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 20:32:45,850 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 20:32:45,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2022-07-19 20:32:45,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293221475] [2022-07-19 20:32:45,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 20:32:45,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 20:32:45,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:45,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 20:32:45,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-07-19 20:32:45,851 INFO L87 Difference]: Start difference. First operand 9793 states and 13842 transitions. Second operand has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-07-19 20:32:47,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:47,241 INFO L93 Difference]: Finished difference Result 11765 states and 16295 transitions. [2022-07-19 20:32:47,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-19 20:32:47,241 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 162 [2022-07-19 20:32:47,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:47,294 INFO L225 Difference]: With dead ends: 11765 [2022-07-19 20:32:47,307 INFO L226 Difference]: Without dead ends: 10331 [2022-07-19 20:32:47,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 355 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2022-07-19 20:32:47,316 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 1008 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 1609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:47,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1031 Valid, 1328 Invalid, 1609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 20:32:47,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10331 states. [2022-07-19 20:32:47,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10331 to 10181. [2022-07-19 20:32:47,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10181 states, 8613 states have (on average 1.3918495297805642) internal successors, (11988), 8720 states have internal predecessors, (11988), 908 states have call successors, (908), 557 states have call predecessors, (908), 658 states have return successors, (1414), 911 states have call predecessors, (1414), 907 states have call successors, (1414) [2022-07-19 20:32:47,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10181 states to 10181 states and 14310 transitions. [2022-07-19 20:32:47,916 INFO L78 Accepts]: Start accepts. Automaton has 10181 states and 14310 transitions. Word has length 162 [2022-07-19 20:32:47,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:47,916 INFO L495 AbstractCegarLoop]: Abstraction has 10181 states and 14310 transitions. [2022-07-19 20:32:47,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-07-19 20:32:47,917 INFO L276 IsEmpty]: Start isEmpty. Operand 10181 states and 14310 transitions. [2022-07-19 20:32:47,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-19 20:32:47,928 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:47,928 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 20:32:47,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 20:32:48,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-19 20:32:48,147 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:48,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:48,148 INFO L85 PathProgramCache]: Analyzing trace with hash 948222591, now seen corresponding path program 1 times [2022-07-19 20:32:48,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:48,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571609413] [2022-07-19 20:32:48,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:48,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:48,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:48,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:48,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:48,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 20:32:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:48,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:32:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:48,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:32:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:48,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:32:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:48,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 20:32:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:48,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 20:32:48,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:48,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-19 20:32:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:48,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 20:32:48,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:48,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-19 20:32:48,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:48,211 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-19 20:32:48,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:48,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571609413] [2022-07-19 20:32:48,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571609413] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:32:48,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849833366] [2022-07-19 20:32:48,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:48,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:32:48,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:32:48,213 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:32:48,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 20:32:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:48,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 20:32:48,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:32:48,429 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-19 20:32:48,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 20:32:48,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849833366] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:48,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 20:32:48,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-19 20:32:48,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909954512] [2022-07-19 20:32:48,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:48,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:32:48,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:48,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:32:48,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:32:48,431 INFO L87 Difference]: Start difference. First operand 10181 states and 14310 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 20:32:49,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:49,241 INFO L93 Difference]: Finished difference Result 26322 states and 38179 transitions. [2022-07-19 20:32:49,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:32:49,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 166 [2022-07-19 20:32:49,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:49,289 INFO L225 Difference]: With dead ends: 26322 [2022-07-19 20:32:49,290 INFO L226 Difference]: Without dead ends: 18080 [2022-07-19 20:32:49,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:32:49,312 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 251 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:49,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 553 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:32:49,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18080 states. [2022-07-19 20:32:50,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18080 to 17946. [2022-07-19 20:32:50,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17946 states, 15285 states have (on average 1.4103369316323193) internal successors, (21557), 15478 states have internal predecessors, (21557), 1553 states have call successors, (1553), 949 states have call predecessors, (1553), 1106 states have return successors, (2399), 1526 states have call predecessors, (2399), 1552 states have call successors, (2399) [2022-07-19 20:32:50,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17946 states to 17946 states and 25509 transitions. [2022-07-19 20:32:50,189 INFO L78 Accepts]: Start accepts. Automaton has 17946 states and 25509 transitions. Word has length 166 [2022-07-19 20:32:50,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:50,190 INFO L495 AbstractCegarLoop]: Abstraction has 17946 states and 25509 transitions. [2022-07-19 20:32:50,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 20:32:50,190 INFO L276 IsEmpty]: Start isEmpty. Operand 17946 states and 25509 transitions. [2022-07-19 20:32:50,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-19 20:32:50,207 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:50,208 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 20:32:50,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-19 20:32:50,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-19 20:32:50,423 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:50,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:50,423 INFO L85 PathProgramCache]: Analyzing trace with hash -104058437, now seen corresponding path program 1 times [2022-07-19 20:32:50,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:50,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270519244] [2022-07-19 20:32:50,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:50,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:50,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:50,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:50,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 20:32:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:50,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:32:50,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:50,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:32:50,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:50,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:32:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:50,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 20:32:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:50,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 20:32:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:50,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-19 20:32:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:50,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 20:32:50,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:50,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-19 20:32:50,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:50,491 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-19 20:32:50,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:50,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270519244] [2022-07-19 20:32:50,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270519244] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:32:50,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756957329] [2022-07-19 20:32:50,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:50,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:32:50,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:32:50,493 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:32:50,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 20:32:50,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:50,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 20:32:50,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:32:50,787 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-19 20:32:50,787 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 20:32:50,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756957329] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:50,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 20:32:50,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-19 20:32:50,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308681069] [2022-07-19 20:32:50,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:50,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:32:50,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:50,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:32:50,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:32:50,796 INFO L87 Difference]: Start difference. First operand 17946 states and 25509 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 20:32:51,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:51,859 INFO L93 Difference]: Finished difference Result 35267 states and 51145 transitions. [2022-07-19 20:32:51,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:32:51,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 166 [2022-07-19 20:32:51,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:51,927 INFO L225 Difference]: With dead ends: 35267 [2022-07-19 20:32:51,927 INFO L226 Difference]: Without dead ends: 25289 [2022-07-19 20:32:51,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:32:51,958 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 252 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:51,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 558 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:32:51,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25289 states. [2022-07-19 20:32:53,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25289 to 25095. [2022-07-19 20:32:53,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25095 states, 21444 states have (on average 1.4185786233911584) internal successors, (30420), 21705 states have internal predecessors, (30420), 2140 states have call successors, (2140), 1304 states have call predecessors, (2140), 1509 states have return successors, (3249), 2093 states have call predecessors, (3249), 2139 states have call successors, (3249) [2022-07-19 20:32:53,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25095 states to 25095 states and 35809 transitions. [2022-07-19 20:32:53,263 INFO L78 Accepts]: Start accepts. Automaton has 25095 states and 35809 transitions. Word has length 166 [2022-07-19 20:32:53,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:53,263 INFO L495 AbstractCegarLoop]: Abstraction has 25095 states and 35809 transitions. [2022-07-19 20:32:53,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 20:32:53,264 INFO L276 IsEmpty]: Start isEmpty. Operand 25095 states and 35809 transitions. [2022-07-19 20:32:53,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 20:32:53,284 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:53,285 INFO L195 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, 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] [2022-07-19 20:32:53,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-19 20:32:53,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:32:53,489 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:53,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:53,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1396720151, now seen corresponding path program 1 times [2022-07-19 20:32:53,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:53,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154420608] [2022-07-19 20:32:53,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:53,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:53,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:53,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:53,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 20:32:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:53,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 20:32:53,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:53,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:53,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:53,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:53,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 20:32:53,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:53,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:32:53,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:53,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 20:32:53,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:53,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 20:32:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:53,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 20:32:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:53,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 20:32:53,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:53,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 20:32:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:53,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:53,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:53,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:53,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-19 20:32:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:53,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 20:32:53,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:53,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 20:32:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:53,583 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-07-19 20:32:53,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:53,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154420608] [2022-07-19 20:32:53,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154420608] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:32:53,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469271047] [2022-07-19 20:32:53,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:53,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:32:53,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:32:53,586 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:32:53,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-19 20:32:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:53,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 20:32:53,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:32:53,811 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-19 20:32:53,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 20:32:53,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469271047] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:53,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 20:32:53,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-19 20:32:53,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883561799] [2022-07-19 20:32:53,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:53,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:32:53,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:53,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:32:53,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:32:53,813 INFO L87 Difference]: Start difference. First operand 25095 states and 35809 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 20:32:55,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:55,088 INFO L93 Difference]: Finished difference Result 26857 states and 37938 transitions. [2022-07-19 20:32:55,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:32:55,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 179 [2022-07-19 20:32:55,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:55,157 INFO L225 Difference]: With dead ends: 26857 [2022-07-19 20:32:55,157 INFO L226 Difference]: Without dead ends: 25102 [2022-07-19 20:32:55,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:32:55,176 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 33 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:55,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 712 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:32:55,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25102 states. [2022-07-19 20:32:56,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25102 to 25095. [2022-07-19 20:32:56,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25095 states, 21444 states have (on average 1.4182988248461108) internal successors, (30414), 21705 states have internal predecessors, (30414), 2140 states have call successors, (2140), 1304 states have call predecessors, (2140), 1509 states have return successors, (3249), 2093 states have call predecessors, (3249), 2139 states have call successors, (3249) [2022-07-19 20:32:56,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25095 states to 25095 states and 35803 transitions. [2022-07-19 20:32:56,569 INFO L78 Accepts]: Start accepts. Automaton has 25095 states and 35803 transitions. Word has length 179 [2022-07-19 20:32:56,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:56,569 INFO L495 AbstractCegarLoop]: Abstraction has 25095 states and 35803 transitions. [2022-07-19 20:32:56,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 20:32:56,569 INFO L276 IsEmpty]: Start isEmpty. Operand 25095 states and 35803 transitions. [2022-07-19 20:32:56,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 20:32:56,592 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:56,592 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:56,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-19 20:32:56,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-07-19 20:32:56,801 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:56,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:56,801 INFO L85 PathProgramCache]: Analyzing trace with hash -642490676, now seen corresponding path program 1 times [2022-07-19 20:32:56,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:56,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006350934] [2022-07-19 20:32:56,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:56,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 20:32:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 20:32:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 20:32:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:32:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 20:32:56,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 20:32:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 20:32:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 20:32:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 20:32:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:56,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:56,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-19 20:32:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 20:32:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 20:32:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,885 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-19 20:32:56,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:56,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006350934] [2022-07-19 20:32:56,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006350934] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:32:56,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903722097] [2022-07-19 20:32:56,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:56,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:32:56,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:32:56,895 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:32:56,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-19 20:32:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 20:32:56,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:32:57,018 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-07-19 20:32:57,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 20:32:57,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903722097] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:57,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 20:32:57,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-07-19 20:32:57,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924872473] [2022-07-19 20:32:57,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:57,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 20:32:57,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:57,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 20:32:57,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:32:57,020 INFO L87 Difference]: Start difference. First operand 25095 states and 35803 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 3 states have internal predecessors, (95), 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) [2022-07-19 20:32:58,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:58,313 INFO L93 Difference]: Finished difference Result 26922 states and 38000 transitions. [2022-07-19 20:32:58,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:32:58,314 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 3 states have internal predecessors, (95), 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 [2022-07-19 20:32:58,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:58,383 INFO L225 Difference]: With dead ends: 26922 [2022-07-19 20:32:58,383 INFO L226 Difference]: Without dead ends: 24807 [2022-07-19 20:32:58,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-07-19 20:32:58,402 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 442 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:58,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 695 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 20:32:58,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24807 states. [2022-07-19 20:32:59,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24807 to 24765. [2022-07-19 20:32:59,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24765 states, 21191 states have (on average 1.4206030862158463) internal successors, (30104), 21445 states have internal predecessors, (30104), 2105 states have call successors, (2105), 1273 states have call predecessors, (2105), 1467 states have return successors, (3175), 2054 states have call predecessors, (3175), 2104 states have call successors, (3175) [2022-07-19 20:32:59,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24765 states to 24765 states and 35384 transitions. [2022-07-19 20:32:59,889 INFO L78 Accepts]: Start accepts. Automaton has 24765 states and 35384 transitions. Word has length 179 [2022-07-19 20:32:59,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:59,889 INFO L495 AbstractCegarLoop]: Abstraction has 24765 states and 35384 transitions. [2022-07-19 20:32:59,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 3 states have internal predecessors, (95), 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) [2022-07-19 20:32:59,890 INFO L276 IsEmpty]: Start isEmpty. Operand 24765 states and 35384 transitions. [2022-07-19 20:32:59,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-19 20:32:59,915 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:59,916 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:59,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-19 20:33:00,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:33:00,133 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:00,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:00,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1330235084, now seen corresponding path program 1 times [2022-07-19 20:33:00,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:00,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545224049] [2022-07-19 20:33:00,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:00,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:00,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:00,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:00,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:00,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 20:33:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:00,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:33:00,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:00,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:33:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:00,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:33:00,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:00,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 20:33:00,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:00,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 20:33:00,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:00,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 20:33:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:00,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-19 20:33:00,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:00,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 20:33:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:00,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-19 20:33:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:00,215 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-19 20:33:00,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:00,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545224049] [2022-07-19 20:33:00,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545224049] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:33:00,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129915296] [2022-07-19 20:33:00,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:00,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:33:00,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:33:00,235 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:33:00,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-19 20:33:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:00,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 20:33:00,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:33:00,407 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 20:33:00,407 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 20:33:00,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129915296] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:00,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 20:33:00,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-19 20:33:00,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861508789] [2022-07-19 20:33:00,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:00,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:33:00,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:00,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:33:00,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:33:00,409 INFO L87 Difference]: Start difference. First operand 24765 states and 35384 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 20:33:01,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:01,754 INFO L93 Difference]: Finished difference Result 46003 states and 66112 transitions. [2022-07-19 20:33:01,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:33:01,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 184 [2022-07-19 20:33:01,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:01,810 INFO L225 Difference]: With dead ends: 46003 [2022-07-19 20:33:01,811 INFO L226 Difference]: Without dead ends: 22848 [2022-07-19 20:33:01,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:33:01,849 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 275 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:01,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 392 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:33:01,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22848 states. [2022-07-19 20:33:03,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22848 to 22798. [2022-07-19 20:33:03,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22798 states, 19624 states have (on average 1.375407664084794) internal successors, (26991), 19806 states have internal predecessors, (26991), 1794 states have call successors, (1794), 1216 states have call predecessors, (1794), 1378 states have return successors, (2628), 1783 states have call predecessors, (2628), 1793 states have call successors, (2628) [2022-07-19 20:33:03,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22798 states to 22798 states and 31413 transitions. [2022-07-19 20:33:03,203 INFO L78 Accepts]: Start accepts. Automaton has 22798 states and 31413 transitions. Word has length 184 [2022-07-19 20:33:03,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:03,203 INFO L495 AbstractCegarLoop]: Abstraction has 22798 states and 31413 transitions. [2022-07-19 20:33:03,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 20:33:03,203 INFO L276 IsEmpty]: Start isEmpty. Operand 22798 states and 31413 transitions. [2022-07-19 20:33:03,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-19 20:33:03,228 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:03,228 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-19 20:33:03,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-07-19 20:33:03,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-07-19 20:33:03,446 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:03,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:03,447 INFO L85 PathProgramCache]: Analyzing trace with hash -2021171972, now seen corresponding path program 1 times [2022-07-19 20:33:03,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:03,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759346302] [2022-07-19 20:33:03,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:03,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:03,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:03,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 20:33:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:03,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:33:03,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:03,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:33:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:03,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:33:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:03,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 20:33:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:03,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 20:33:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:03,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 20:33:03,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:03,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-19 20:33:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:03,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 20:33:03,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:03,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-19 20:33:03,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:03,522 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-19 20:33:03,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:03,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759346302] [2022-07-19 20:33:03,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759346302] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:33:03,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005940523] [2022-07-19 20:33:03,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:03,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:33:03,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:33:03,540 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:33:03,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-19 20:33:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:03,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 20:33:03,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:33:03,709 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 20:33:03,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 20:33:03,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005940523] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:03,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 20:33:03,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-19 20:33:03,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064260455] [2022-07-19 20:33:03,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:03,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:33:03,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:03,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:33:03,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:33:03,711 INFO L87 Difference]: Start difference. First operand 22798 states and 31413 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 20:33:05,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:05,539 INFO L93 Difference]: Finished difference Result 46333 states and 65025 transitions. [2022-07-19 20:33:05,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:33:05,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 184 [2022-07-19 20:33:05,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:05,607 INFO L225 Difference]: With dead ends: 46333 [2022-07-19 20:33:05,608 INFO L226 Difference]: Without dead ends: 25145 [2022-07-19 20:33:05,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:33:05,661 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 291 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:05,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 385 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:33:05,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25145 states. [2022-07-19 20:33:07,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25145 to 25135. [2022-07-19 20:33:07,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25135 states, 21769 states have (on average 1.3401166796821167) internal successors, (29173), 21951 states have internal predecessors, (29173), 1852 states have call successors, (1852), 1350 states have call predecessors, (1852), 1512 states have return successors, (2701), 1841 states have call predecessors, (2701), 1851 states have call successors, (2701) [2022-07-19 20:33:07,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25135 states to 25135 states and 33726 transitions. [2022-07-19 20:33:07,452 INFO L78 Accepts]: Start accepts. Automaton has 25135 states and 33726 transitions. Word has length 184 [2022-07-19 20:33:07,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:07,467 INFO L495 AbstractCegarLoop]: Abstraction has 25135 states and 33726 transitions. [2022-07-19 20:33:07,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 20:33:07,467 INFO L276 IsEmpty]: Start isEmpty. Operand 25135 states and 33726 transitions. [2022-07-19 20:33:07,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-19 20:33:07,511 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:07,512 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:33:07,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-19 20:33:07,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-07-19 20:33:07,753 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:07,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:07,753 INFO L85 PathProgramCache]: Analyzing trace with hash -898713314, now seen corresponding path program 1 times [2022-07-19 20:33:07,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:07,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184323169] [2022-07-19 20:33:07,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:07,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:07,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:07,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 20:33:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:07,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:33:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:07,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:33:07,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:07,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:33:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:07,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 20:33:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:07,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 20:33:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:07,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 20:33:07,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:07,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-19 20:33:07,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:07,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 20:33:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:07,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-19 20:33:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:07,820 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-19 20:33:07,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:07,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184323169] [2022-07-19 20:33:07,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184323169] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:33:07,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094091111] [2022-07-19 20:33:07,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:07,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:33:07,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:33:07,821 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:33:07,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-19 20:33:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:07,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 20:33:07,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:33:07,940 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-19 20:33:07,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 20:33:07,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094091111] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:07,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 20:33:07,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-19 20:33:07,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971010007] [2022-07-19 20:33:07,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:07,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:33:07,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:07,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:33:07,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:33:07,941 INFO L87 Difference]: Start difference. First operand 25135 states and 33726 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-19 20:33:09,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:09,679 INFO L93 Difference]: Finished difference Result 50684 states and 67959 transitions. [2022-07-19 20:33:09,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:33:09,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 184 [2022-07-19 20:33:09,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:09,750 INFO L225 Difference]: With dead ends: 50684 [2022-07-19 20:33:09,751 INFO L226 Difference]: Without dead ends: 27159 [2022-07-19 20:33:09,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:33:09,796 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 317 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:09,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 562 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:33:09,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27159 states. [2022-07-19 20:33:11,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27159 to 26804. [2022-07-19 20:33:11,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26804 states, 23318 states have (on average 1.3106612917059781) internal successors, (30562), 23490 states have internal predecessors, (30562), 1862 states have call successors, (1862), 1440 states have call predecessors, (1862), 1622 states have return successors, (2691), 1881 states have call predecessors, (2691), 1861 states have call successors, (2691) [2022-07-19 20:33:11,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26804 states to 26804 states and 35115 transitions. [2022-07-19 20:33:11,794 INFO L78 Accepts]: Start accepts. Automaton has 26804 states and 35115 transitions. Word has length 184 [2022-07-19 20:33:11,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:11,794 INFO L495 AbstractCegarLoop]: Abstraction has 26804 states and 35115 transitions. [2022-07-19 20:33:11,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-19 20:33:11,795 INFO L276 IsEmpty]: Start isEmpty. Operand 26804 states and 35115 transitions. [2022-07-19 20:33:11,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-19 20:33:11,821 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:11,822 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:33:11,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-19 20:33:12,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-07-19 20:33:12,039 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:12,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:12,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1926128958, now seen corresponding path program 1 times [2022-07-19 20:33:12,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:12,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717956855] [2022-07-19 20:33:12,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:12,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:12,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:12,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 20:33:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:12,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:33:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:12,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:33:12,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:12,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:33:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:12,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 20:33:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:12,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 20:33:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:12,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 20:33:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:12,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-19 20:33:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:12,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 20:33:12,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:12,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-19 20:33:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:12,106 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-07-19 20:33:12,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:12,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717956855] [2022-07-19 20:33:12,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717956855] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:33:12,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208086555] [2022-07-19 20:33:12,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:12,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:33:12,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:33:12,124 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:33:12,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-19 20:33:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:12,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 20:33:12,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:33:12,259 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-19 20:33:12,260 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 20:33:12,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208086555] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:12,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 20:33:12,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-19 20:33:12,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98762165] [2022-07-19 20:33:12,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:12,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:33:12,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:12,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:33:12,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:33:12,261 INFO L87 Difference]: Start difference. First operand 26804 states and 35115 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-19 20:33:15,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:15,635 INFO L93 Difference]: Finished difference Result 76438 states and 101578 transitions. [2022-07-19 20:33:15,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:33:15,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 185 [2022-07-19 20:33:15,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:15,778 INFO L225 Difference]: With dead ends: 76438 [2022-07-19 20:33:15,779 INFO L226 Difference]: Without dead ends: 51244 [2022-07-19 20:33:15,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:33:15,820 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 297 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:15,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 601 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:33:15,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51244 states. [2022-07-19 20:33:19,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51244 to 50932. [2022-07-19 20:33:19,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50932 states, 44469 states have (on average 1.306977894713171) internal successors, (58120), 44800 states have internal predecessors, (58120), 3437 states have call successors, (3437), 2684 states have call predecessors, (3437), 3024 states have return successors, (6180), 3463 states have call predecessors, (6180), 3436 states have call successors, (6180) [2022-07-19 20:33:19,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50932 states to 50932 states and 67737 transitions. [2022-07-19 20:33:19,500 INFO L78 Accepts]: Start accepts. Automaton has 50932 states and 67737 transitions. Word has length 185 [2022-07-19 20:33:19,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:19,501 INFO L495 AbstractCegarLoop]: Abstraction has 50932 states and 67737 transitions. [2022-07-19 20:33:19,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-19 20:33:19,501 INFO L276 IsEmpty]: Start isEmpty. Operand 50932 states and 67737 transitions. [2022-07-19 20:33:19,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-19 20:33:19,558 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:19,559 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:33:19,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-19 20:33:19,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-07-19 20:33:19,779 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:19,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:19,779 INFO L85 PathProgramCache]: Analyzing trace with hash 356903296, now seen corresponding path program 1 times [2022-07-19 20:33:19,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:19,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687697251] [2022-07-19 20:33:19,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:19,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:19,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:19,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:19,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 20:33:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:19,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:33:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:19,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:33:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:19,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:33:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:19,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 20:33:19,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:19,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 20:33:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:19,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 20:33:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:19,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-19 20:33:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:19,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 20:33:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:19,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-19 20:33:19,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:19,822 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-07-19 20:33:19,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:19,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687697251] [2022-07-19 20:33:19,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687697251] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:19,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:33:19,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:33:19,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4601797] [2022-07-19 20:33:19,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:19,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 20:33:19,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:19,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 20:33:19,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:33:19,824 INFO L87 Difference]: Start difference. First operand 50932 states and 67737 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 20:33:24,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:24,171 INFO L93 Difference]: Finished difference Result 98918 states and 131426 transitions. [2022-07-19 20:33:24,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:33:24,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 185 [2022-07-19 20:33:24,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:24,295 INFO L225 Difference]: With dead ends: 98918 [2022-07-19 20:33:24,295 INFO L226 Difference]: Without dead ends: 49595 [2022-07-19 20:33:24,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:33:24,458 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 481 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:24,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 657 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 20:33:24,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49595 states. [2022-07-19 20:33:27,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49595 to 42446. [2022-07-19 20:33:27,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42446 states, 37150 states have (on average 1.306514131897712) internal successors, (48537), 37608 states have internal predecessors, (48537), 2638 states have call successors, (2638), 2052 states have call predecessors, (2638), 2656 states have return successors, (5073), 2793 states have call predecessors, (5073), 2637 states have call successors, (5073) [2022-07-19 20:33:27,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42446 states to 42446 states and 56248 transitions. [2022-07-19 20:33:27,885 INFO L78 Accepts]: Start accepts. Automaton has 42446 states and 56248 transitions. Word has length 185 [2022-07-19 20:33:27,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:27,885 INFO L495 AbstractCegarLoop]: Abstraction has 42446 states and 56248 transitions. [2022-07-19 20:33:27,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 20:33:27,886 INFO L276 IsEmpty]: Start isEmpty. Operand 42446 states and 56248 transitions. [2022-07-19 20:33:27,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-07-19 20:33:27,934 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:27,934 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:33:27,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-19 20:33:27,935 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:27,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:27,935 INFO L85 PathProgramCache]: Analyzing trace with hash -993571036, now seen corresponding path program 1 times [2022-07-19 20:33:27,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:27,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95244182] [2022-07-19 20:33:27,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:27,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:27,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:27,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 20:33:27,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:27,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:33:27,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:27,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:33:27,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:27,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:33:27,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:27,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 20:33:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:27,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 20:33:27,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:27,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 20:33:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:27,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-19 20:33:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:28,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 20:33:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:28,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-19 20:33:28,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:28,003 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-19 20:33:28,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:28,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95244182] [2022-07-19 20:33:28,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95244182] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:33:28,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260187170] [2022-07-19 20:33:28,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:28,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:33:28,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:33:28,014 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:33:28,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-19 20:33:28,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:28,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 20:33:28,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:33:28,158 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-07-19 20:33:28,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 20:33:28,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260187170] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:28,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 20:33:28,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-19 20:33:28,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829946856] [2022-07-19 20:33:28,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:28,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:33:28,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:28,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:33:28,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:33:28,160 INFO L87 Difference]: Start difference. First operand 42446 states and 56248 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-19 20:33:34,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:34,362 INFO L93 Difference]: Finished difference Result 120016 states and 161433 transitions. [2022-07-19 20:33:34,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:33:34,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 187 [2022-07-19 20:33:34,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:34,621 INFO L225 Difference]: With dead ends: 120016 [2022-07-19 20:33:34,622 INFO L226 Difference]: Without dead ends: 79180 [2022-07-19 20:33:34,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:33:34,705 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 302 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:34,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 593 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:33:34,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79180 states.