./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.13.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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_1.cil-2+token_ring.13.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.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 0c76345a7418e3e3e542d36688efe541ee3690f4974296017bb3a3a18fafce6e --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:09:05,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:09:05,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:09:05,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:09:05,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:09:05,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:09:05,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:09:05,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:09:05,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:09:05,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:09:05,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:09:05,401 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:09:05,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:09:05,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:09:05,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:09:05,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:09:05,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:09:05,409 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:09:05,410 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:09:05,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:09:05,415 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:09:05,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:09:05,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:09:05,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:09:05,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:09:05,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:09:05,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:09:05,422 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:09:05,423 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:09:05,423 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:09:05,424 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:09:05,424 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:09:05,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:09:05,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:09:05,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:09:05,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:09:05,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:09:05,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:09:05,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:09:05,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:09:05,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:09:05,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:09:05,428 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:09:05,448 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:09:05,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:09:05,449 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:09:05,450 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:09:05,450 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:09:05,450 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:09:05,451 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:09:05,451 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:09:05,451 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:09:05,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:09:05,452 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:09:05,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:09:05,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:09:05,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:09:05,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:09:05,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:09:05,453 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:09:05,453 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:09:05,453 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:09:05,454 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:09:05,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:09:05,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:09:05,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:09:05,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:09:05,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:09:05,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:09:05,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:09:05,456 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:09:05,456 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:09:05,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:09:05,456 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:09:05,456 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:09:05,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:09:05,457 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c76345a7418e3e3e542d36688efe541ee3690f4974296017bb3a3a18fafce6e [2022-07-13 21:09:05,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:09:05,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:09:05,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:09:05,645 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:09:05,645 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:09:05,646 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.13.cil-1.c [2022-07-13 21:09:05,691 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d688c17d1/ef6ad7403659482895d555abb68281d5/FLAG02f1cf636 [2022-07-13 21:09:06,081 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:09:06,081 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.13.cil-1.c [2022-07-13 21:09:06,106 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d688c17d1/ef6ad7403659482895d555abb68281d5/FLAG02f1cf636 [2022-07-13 21:09:06,116 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d688c17d1/ef6ad7403659482895d555abb68281d5 [2022-07-13 21:09:06,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:09:06,119 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:09:06,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:09:06,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:09:06,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:09:06,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:09:06" (1/1) ... [2022-07-13 21:09:06,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d762bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:09:06, skipping insertion in model container [2022-07-13 21:09:06,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:09:06" (1/1) ... [2022-07-13 21:09:06,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:09:06,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:09:06,287 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_1.cil-2+token_ring.13.cil-1.c[913,926] [2022-07-13 21:09:06,311 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_1.cil-2+token_ring.13.cil-1.c[5977,5990] [2022-07-13 21:09:06,378 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:09:06,385 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:09:06,392 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_1.cil-2+token_ring.13.cil-1.c[913,926] [2022-07-13 21:09:06,400 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_1.cil-2+token_ring.13.cil-1.c[5977,5990] [2022-07-13 21:09:06,446 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:09:06,460 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:09:06,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:09:06 WrapperNode [2022-07-13 21:09:06,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:09:06,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:09:06,461 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:09:06,461 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:09:06,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:09:06" (1/1) ... [2022-07-13 21:09:06,489 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:09:06" (1/1) ... [2022-07-13 21:09:06,526 INFO L137 Inliner]: procedures = 74, calls = 88, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 1118 [2022-07-13 21:09:06,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:09:06,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:09:06,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:09:06,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:09:06,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:09:06" (1/1) ... [2022-07-13 21:09:06,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:09:06" (1/1) ... [2022-07-13 21:09:06,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:09:06" (1/1) ... [2022-07-13 21:09:06,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:09:06" (1/1) ... [2022-07-13 21:09:06,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:09:06" (1/1) ... [2022-07-13 21:09:06,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:09:06" (1/1) ... [2022-07-13 21:09:06,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:09:06" (1/1) ... [2022-07-13 21:09:06,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:09:06,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:09:06,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:09:06,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:09:06,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:09:06" (1/1) ... [2022-07-13 21:09:06,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:09:06,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:09:06,629 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) [2022-07-13 21:09:06,638 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 [2022-07-13 21:09:06,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:09:06,666 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 21:09:06,666 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 21:09:06,666 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-07-13 21:09:06,667 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-07-13 21:09:06,667 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-13 21:09:06,667 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-13 21:09:06,667 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-13 21:09:06,667 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-13 21:09:06,667 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-13 21:09:06,667 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-13 21:09:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-13 21:09:06,668 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-13 21:09:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-13 21:09:06,668 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-13 21:09:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:09:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-13 21:09:06,668 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-13 21:09:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:09:06,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:09:06,669 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-13 21:09:06,669 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-13 21:09:06,669 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-07-13 21:09:06,669 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-07-13 21:09:06,791 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:09:06,792 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:09:07,455 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:09:07,471 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:09:07,472 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2022-07-13 21:09:07,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:09:07 BoogieIcfgContainer [2022-07-13 21:09:07,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:09:07,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:09:07,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:09:07,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:09:07,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:09:06" (1/3) ... [2022-07-13 21:09:07,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6251bd69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:09:07, skipping insertion in model container [2022-07-13 21:09:07,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:09:06" (2/3) ... [2022-07-13 21:09:07,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6251bd69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:09:07, skipping insertion in model container [2022-07-13 21:09:07,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:09:07" (3/3) ... [2022-07-13 21:09:07,479 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.13.cil-1.c [2022-07-13 21:09:07,488 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:09:07,498 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 21:09:07,557 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:09:07,561 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@59faf3e2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@27379904 [2022-07-13 21:09:07,561 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 21:09:07,571 INFO L276 IsEmpty]: Start isEmpty. Operand has 487 states, 439 states have (on average 1.6560364464692483) internal successors, (727), 446 states have internal predecessors, (727), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-13 21:09:07,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-13 21:09:07,579 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:07,580 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] [2022-07-13 21:09:07,580 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:07,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:07,583 INFO L85 PathProgramCache]: Analyzing trace with hash 657340763, now seen corresponding path program 1 times [2022-07-13 21:09:07,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:07,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848101294] [2022-07-13 21:09:07,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:07,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:07,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:09:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:07,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 21:09:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:07,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:09:07,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:07,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848101294] [2022-07-13 21:09:07,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848101294] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:07,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:09:07,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 21:09:07,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277833396] [2022-07-13 21:09:07,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:07,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 21:09:07,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:07,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 21:09:07,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 21:09:07,845 INFO L87 Difference]: Start difference. First operand has 487 states, 439 states have (on average 1.6560364464692483) internal successors, (727), 446 states have internal predecessors, (727), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 21:09:08,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:08,480 INFO L93 Difference]: Finished difference Result 955 states and 1559 transitions. [2022-07-13 21:09:08,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 21:09:08,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2022-07-13 21:09:08,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:08,494 INFO L225 Difference]: With dead ends: 955 [2022-07-13 21:09:08,494 INFO L226 Difference]: Without dead ends: 485 [2022-07-13 21:09:08,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:09:08,503 INFO L413 NwaCegarLoop]: 755 mSDtfsCounter, 407 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:08,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 1455 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 21:09:08,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-07-13 21:09:08,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 476. [2022-07-13 21:09:08,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 431 states have (on average 1.5638051044083527) internal successors, (674), 435 states have internal predecessors, (674), 35 states have call successors, (35), 10 states have call predecessors, (35), 8 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-07-13 21:09:08,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 740 transitions. [2022-07-13 21:09:08,608 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 740 transitions. Word has length 44 [2022-07-13 21:09:08,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:08,609 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 740 transitions. [2022-07-13 21:09:08,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 21:09:08,609 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 740 transitions. [2022-07-13 21:09:08,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-13 21:09:08,611 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:08,611 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] [2022-07-13 21:09:08,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:09:08,612 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:08,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:08,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1792259367, now seen corresponding path program 1 times [2022-07-13 21:09:08,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:08,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112230670] [2022-07-13 21:09:08,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:08,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:08,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:09:08,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:08,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 21:09:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:08,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:09:08,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:08,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112230670] [2022-07-13 21:09:08,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112230670] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:08,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:09:08,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 21:09:08,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149877370] [2022-07-13 21:09:08,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:08,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 21:09:08,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:08,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 21:09:08,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 21:09:08,690 INFO L87 Difference]: Start difference. First operand 476 states and 740 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 21:09:08,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:08,854 INFO L93 Difference]: Finished difference Result 608 states and 925 transitions. [2022-07-13 21:09:08,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 21:09:08,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-07-13 21:09:08,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:08,859 INFO L225 Difference]: With dead ends: 608 [2022-07-13 21:09:08,860 INFO L226 Difference]: Without dead ends: 546 [2022-07-13 21:09:08,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:09:08,861 INFO L413 NwaCegarLoop]: 748 mSDtfsCounter, 1008 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:08,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 1177 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 21:09:08,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-07-13 21:09:08,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 540. [2022-07-13 21:09:08,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 488 states have (on average 1.5368852459016393) internal successors, (750), 493 states have internal predecessors, (750), 39 states have call successors, (39), 12 states have call predecessors, (39), 11 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2022-07-13 21:09:08,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 830 transitions. [2022-07-13 21:09:08,891 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 830 transitions. Word has length 44 [2022-07-13 21:09:08,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:08,892 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 830 transitions. [2022-07-13 21:09:08,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 21:09:08,892 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 830 transitions. [2022-07-13 21:09:08,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-13 21:09:08,894 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:08,894 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] [2022-07-13 21:09:08,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:09:08,894 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:08,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:08,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1280815605, now seen corresponding path program 1 times [2022-07-13 21:09:08,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:08,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636337135] [2022-07-13 21:09:08,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:08,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:08,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:08,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:09:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:08,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 21:09:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:08,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:09:08,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:08,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636337135] [2022-07-13 21:09:08,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636337135] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:08,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:09:08,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 21:09:08,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52470660] [2022-07-13 21:09:08,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:08,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 21:09:08,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:08,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 21:09:08,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 21:09:08,990 INFO L87 Difference]: Start difference. First operand 540 states and 830 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 21:09:09,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:09,360 INFO L93 Difference]: Finished difference Result 788 states and 1170 transitions. [2022-07-13 21:09:09,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 21:09:09,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-07-13 21:09:09,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:09,364 INFO L225 Difference]: With dead ends: 788 [2022-07-13 21:09:09,364 INFO L226 Difference]: Without dead ends: 664 [2022-07-13 21:09:09,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:09:09,370 INFO L413 NwaCegarLoop]: 786 mSDtfsCounter, 388 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 1559 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:09,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 1559 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 21:09:09,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2022-07-13 21:09:09,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 607. [2022-07-13 21:09:09,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 549 states have (on average 1.5191256830601092) internal successors, (834), 554 states have internal predecessors, (834), 42 states have call successors, (42), 15 states have call predecessors, (42), 14 states have return successors, (44), 38 states have call predecessors, (44), 38 states have call successors, (44) [2022-07-13 21:09:09,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 920 transitions. [2022-07-13 21:09:09,407 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 920 transitions. Word has length 45 [2022-07-13 21:09:09,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:09,407 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 920 transitions. [2022-07-13 21:09:09,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 21:09:09,408 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 920 transitions. [2022-07-13 21:09:09,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-13 21:09:09,413 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:09,414 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] [2022-07-13 21:09:09,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:09:09,414 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:09,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:09,415 INFO L85 PathProgramCache]: Analyzing trace with hash -3541856, now seen corresponding path program 1 times [2022-07-13 21:09:09,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:09,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919720954] [2022-07-13 21:09:09,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:09,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:09,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:09,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:09:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:09,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 21:09:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:09,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:09:09,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:09,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919720954] [2022-07-13 21:09:09,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919720954] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:09,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:09:09,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 21:09:09,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806337478] [2022-07-13 21:09:09,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:09,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 21:09:09,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:09,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 21:09:09,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 21:09:09,502 INFO L87 Difference]: Start difference. First operand 607 states and 920 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 21:09:09,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:09,644 INFO L93 Difference]: Finished difference Result 1015 states and 1479 transitions. [2022-07-13 21:09:09,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 21:09:09,644 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-07-13 21:09:09,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:09,648 INFO L225 Difference]: With dead ends: 1015 [2022-07-13 21:09:09,648 INFO L226 Difference]: Without dead ends: 824 [2022-07-13 21:09:09,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:09:09,649 INFO L413 NwaCegarLoop]: 761 mSDtfsCounter, 1025 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:09,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 1202 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 21:09:09,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2022-07-13 21:09:09,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 772. [2022-07-13 21:09:09,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 695 states have (on average 1.4733812949640288) internal successors, (1024), 703 states have internal predecessors, (1024), 53 states have call successors, (53), 22 states have call predecessors, (53), 22 states have return successors, (61), 47 states have call predecessors, (61), 49 states have call successors, (61) [2022-07-13 21:09:09,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1138 transitions. [2022-07-13 21:09:09,674 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 1138 transitions. Word has length 45 [2022-07-13 21:09:09,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:09,675 INFO L495 AbstractCegarLoop]: Abstraction has 772 states and 1138 transitions. [2022-07-13 21:09:09,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 21:09:09,675 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 1138 transitions. [2022-07-13 21:09:09,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-13 21:09:09,676 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:09,677 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] [2022-07-13 21:09:09,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:09:09,677 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:09,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:09,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1415426807, now seen corresponding path program 1 times [2022-07-13 21:09:09,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:09,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201236777] [2022-07-13 21:09:09,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:09,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:09,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:09:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:09,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 21:09:09,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:09,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 21:09:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:09,719 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 21:09:09,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:09,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201236777] [2022-07-13 21:09:09,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201236777] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:09,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:09:09,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 21:09:09,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713179561] [2022-07-13 21:09:09,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:09,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 21:09:09,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:09,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 21:09:09,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 21:09:09,722 INFO L87 Difference]: Start difference. First operand 772 states and 1138 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 21:09:10,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:10,105 INFO L93 Difference]: Finished difference Result 1116 states and 1599 transitions. [2022-07-13 21:09:10,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 21:09:10,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2022-07-13 21:09:10,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:10,109 INFO L225 Difference]: With dead ends: 1116 [2022-07-13 21:09:10,109 INFO L226 Difference]: Without dead ends: 879 [2022-07-13 21:09:10,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:09:10,112 INFO L413 NwaCegarLoop]: 809 mSDtfsCounter, 372 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:10,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 1612 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 21:09:10,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2022-07-13 21:09:10,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 841. [2022-07-13 21:09:10,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 755 states have (on average 1.4490066225165563) internal successors, (1094), 764 states have internal predecessors, (1094), 58 states have call successors, (58), 25 states have call predecessors, (58), 26 states have return successors, (70), 52 states have call predecessors, (70), 54 states have call successors, (70) [2022-07-13 21:09:10,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1222 transitions. [2022-07-13 21:09:10,143 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1222 transitions. Word has length 62 [2022-07-13 21:09:10,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:10,143 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1222 transitions. [2022-07-13 21:09:10,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 21:09:10,144 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1222 transitions. [2022-07-13 21:09:10,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-13 21:09:10,145 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:10,146 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] [2022-07-13 21:09:10,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:09:10,146 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:10,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:10,146 INFO L85 PathProgramCache]: Analyzing trace with hash -558830938, now seen corresponding path program 1 times [2022-07-13 21:09:10,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:10,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488798374] [2022-07-13 21:09:10,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:10,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:10,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:09:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:10,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:09:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:10,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 21:09:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:10,217 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 21:09:10,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:10,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488798374] [2022-07-13 21:09:10,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488798374] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:10,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:09:10,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 21:09:10,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412511225] [2022-07-13 21:09:10,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:10,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 21:09:10,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:10,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 21:09:10,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 21:09:10,220 INFO L87 Difference]: Start difference. First operand 841 states and 1222 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 21:09:10,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:10,347 INFO L93 Difference]: Finished difference Result 1392 states and 1944 transitions. [2022-07-13 21:09:10,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 21:09:10,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2022-07-13 21:09:10,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:10,352 INFO L225 Difference]: With dead ends: 1392 [2022-07-13 21:09:10,352 INFO L226 Difference]: Without dead ends: 1014 [2022-07-13 21:09:10,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:09:10,355 INFO L413 NwaCegarLoop]: 756 mSDtfsCounter, 1012 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:10,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1039 Valid, 1199 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 21:09:10,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2022-07-13 21:09:10,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 959. [2022-07-13 21:09:10,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 860 states have (on average 1.4186046511627908) internal successors, (1220), 870 states have internal predecessors, (1220), 65 states have call successors, (65), 30 states have call predecessors, (65), 32 states have return successors, (81), 59 states have call predecessors, (81), 61 states have call successors, (81) [2022-07-13 21:09:10,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1366 transitions. [2022-07-13 21:09:10,407 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1366 transitions. Word has length 67 [2022-07-13 21:09:10,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:10,408 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 1366 transitions. [2022-07-13 21:09:10,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 21:09:10,408 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1366 transitions. [2022-07-13 21:09:10,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 21:09:10,409 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:10,409 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 21:09:10,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 21:09:10,410 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:10,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:10,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1719872919, now seen corresponding path program 1 times [2022-07-13 21:09:10,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:10,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131607356] [2022-07-13 21:09:10,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:10,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:10,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:09:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:10,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 21:09:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:10,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:09:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:10,497 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 21:09:10,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:10,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131607356] [2022-07-13 21:09:10,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131607356] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:09:10,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741112057] [2022-07-13 21:09:10,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:10,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:09:10,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:09:10,508 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) [2022-07-13 21:09:10,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 21:09:10,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:10,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 21:09:10,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:09:10,649 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 21:09:10,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:09:10,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741112057] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:10,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:09:10,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-13 21:09:10,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227562364] [2022-07-13 21:09:10,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:10,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:09:10,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:10,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:09:10,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:09:10,655 INFO L87 Difference]: Start difference. First operand 959 states and 1366 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 21:09:10,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:10,707 INFO L93 Difference]: Finished difference Result 1402 states and 1961 transitions. [2022-07-13 21:09:10,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:09:10,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 68 [2022-07-13 21:09:10,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:10,711 INFO L225 Difference]: With dead ends: 1402 [2022-07-13 21:09:10,711 INFO L226 Difference]: Without dead ends: 957 [2022-07-13 21:09:10,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:09:10,715 INFO L413 NwaCegarLoop]: 790 mSDtfsCounter, 72 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1502 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:10,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1502 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:09:10,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2022-07-13 21:09:10,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 913. [2022-07-13 21:09:10,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 820 states have (on average 1.4121951219512194) internal successors, (1158), 830 states have internal predecessors, (1158), 61 states have call successors, (61), 28 states have call predecessors, (61), 30 states have return successors, (75), 55 states have call predecessors, (75), 57 states have call successors, (75) [2022-07-13 21:09:10,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1294 transitions. [2022-07-13 21:09:10,744 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1294 transitions. Word has length 68 [2022-07-13 21:09:10,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:10,746 INFO L495 AbstractCegarLoop]: Abstraction has 913 states and 1294 transitions. [2022-07-13 21:09:10,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 21:09:10,746 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1294 transitions. [2022-07-13 21:09:10,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 21:09:10,747 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:10,747 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:09:10,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 21:09:10,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:09:10,967 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:10,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:10,967 INFO L85 PathProgramCache]: Analyzing trace with hash 460098856, now seen corresponding path program 1 times [2022-07-13 21:09:10,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:10,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122984673] [2022-07-13 21:09:10,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:10,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:10,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:09:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:10,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 21:09:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:11,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:09:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:11,016 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 21:09:11,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:11,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122984673] [2022-07-13 21:09:11,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122984673] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:09:11,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563189592] [2022-07-13 21:09:11,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:11,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:09:11,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:09:11,027 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) [2022-07-13 21:09:11,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 21:09:11,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:11,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 21:09:11,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:09:11,209 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:09:11,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 21:09:11,262 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-13 21:09:11,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563189592] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 21:09:11,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 21:09:11,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2022-07-13 21:09:11,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395247507] [2022-07-13 21:09:11,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:11,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 21:09:11,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:11,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 21:09:11,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:09:11,264 INFO L87 Difference]: Start difference. First operand 913 states and 1294 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 21:09:11,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:11,383 INFO L93 Difference]: Finished difference Result 964 states and 1355 transitions. [2022-07-13 21:09:11,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 21:09:11,384 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2022-07-13 21:09:11,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:11,388 INFO L225 Difference]: With dead ends: 964 [2022-07-13 21:09:11,388 INFO L226 Difference]: Without dead ends: 961 [2022-07-13 21:09:11,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:09:11,389 INFO L413 NwaCegarLoop]: 762 mSDtfsCounter, 1351 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1351 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:11,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1351 Valid, 827 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 21:09:11,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2022-07-13 21:09:11,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 912. [2022-07-13 21:09:11,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 820 states have (on average 1.4097560975609755) internal successors, (1156), 829 states have internal predecessors, (1156), 60 states have call successors, (60), 28 states have call predecessors, (60), 30 states have return successors, (75), 55 states have call predecessors, (75), 57 states have call successors, (75) [2022-07-13 21:09:11,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1291 transitions. [2022-07-13 21:09:11,417 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1291 transitions. Word has length 68 [2022-07-13 21:09:11,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:11,418 INFO L495 AbstractCegarLoop]: Abstraction has 912 states and 1291 transitions. [2022-07-13 21:09:11,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 21:09:11,418 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1291 transitions. [2022-07-13 21:09:11,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-13 21:09:11,419 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:11,419 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:09:11,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 21:09:11,636 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,SelfDestructingSolverStorable7 [2022-07-13 21:09:11,637 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:11,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:11,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1376668361, now seen corresponding path program 1 times [2022-07-13 21:09:11,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:11,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214099254] [2022-07-13 21:09:11,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:11,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:11,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:09:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:11,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 21:09:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:11,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:09:11,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:11,689 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 21:09:11,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:11,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214099254] [2022-07-13 21:09:11,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214099254] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:09:11,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906473026] [2022-07-13 21:09:11,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:11,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:09:11,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:09:11,691 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) [2022-07-13 21:09:11,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 21:09:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:11,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 21:09:11,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:09:12,002 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:09:12,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 21:09:12,060 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-13 21:09:12,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906473026] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 21:09:12,061 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 21:09:12,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2022-07-13 21:09:12,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618737736] [2022-07-13 21:09:12,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 21:09:12,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 21:09:12,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:12,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 21:09:12,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:09:12,064 INFO L87 Difference]: Start difference. First operand 912 states and 1291 transitions. Second operand has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-07-13 21:09:13,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:13,428 INFO L93 Difference]: Finished difference Result 2253 states and 3014 transitions. [2022-07-13 21:09:13,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-13 21:09:13,428 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 69 [2022-07-13 21:09:13,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:13,434 INFO L225 Difference]: With dead ends: 2253 [2022-07-13 21:09:13,434 INFO L226 Difference]: Without dead ends: 1857 [2022-07-13 21:09:13,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=324, Invalid=1482, Unknown=0, NotChecked=0, Total=1806 [2022-07-13 21:09:13,438 INFO L413 NwaCegarLoop]: 863 mSDtfsCounter, 2009 mSDsluCounter, 3015 mSDsCounter, 0 mSdLazyCounter, 2038 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2043 SdHoareTripleChecker+Valid, 3878 SdHoareTripleChecker+Invalid, 2152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:13,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2043 Valid, 3878 Invalid, 2152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2038 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 21:09:13,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2022-07-13 21:09:13,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 1276. [2022-07-13 21:09:13,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 1148 states have (on average 1.3562717770034842) internal successors, (1557), 1163 states have internal predecessors, (1557), 79 states have call successors, (79), 41 states have call predecessors, (79), 47 states have return successors, (106), 72 states have call predecessors, (106), 76 states have call successors, (106) [2022-07-13 21:09:13,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1742 transitions. [2022-07-13 21:09:13,516 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1742 transitions. Word has length 69 [2022-07-13 21:09:13,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:13,517 INFO L495 AbstractCegarLoop]: Abstraction has 1276 states and 1742 transitions. [2022-07-13 21:09:13,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-07-13 21:09:13,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1742 transitions. [2022-07-13 21:09:13,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-13 21:09:13,522 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:13,522 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 21:09:13,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-13 21:09:13,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:09:13,742 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:13,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:13,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1823241683, now seen corresponding path program 1 times [2022-07-13 21:09:13,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:13,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770804799] [2022-07-13 21:09:13,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:13,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:13,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:09:13,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:13,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 21:09:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:13,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 21:09:13,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:13,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 21:09:13,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:13,792 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-13 21:09:13,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:13,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770804799] [2022-07-13 21:09:13,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770804799] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:09:13,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998991811] [2022-07-13 21:09:13,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:13,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:09:13,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:09:13,804 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) [2022-07-13 21:09:13,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 21:09:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:13,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 21:09:13,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:09:13,922 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-13 21:09:13,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:09:13,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998991811] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:13,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:09:13,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-13 21:09:13,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526171013] [2022-07-13 21:09:13,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:13,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:09:13,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:13,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:09:13,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:09:13,925 INFO L87 Difference]: Start difference. First operand 1276 states and 1742 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-13 21:09:13,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:13,964 INFO L93 Difference]: Finished difference Result 1888 states and 2520 transitions. [2022-07-13 21:09:13,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:09:13,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2022-07-13 21:09:13,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:13,968 INFO L225 Difference]: With dead ends: 1888 [2022-07-13 21:09:13,969 INFO L226 Difference]: Without dead ends: 1216 [2022-07-13 21:09:13,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:09:13,970 INFO L413 NwaCegarLoop]: 769 mSDtfsCounter, 699 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:13,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 841 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:09:13,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2022-07-13 21:09:14,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1210. [2022-07-13 21:09:14,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 1089 states have (on average 1.3535353535353536) internal successors, (1474), 1104 states have internal predecessors, (1474), 76 states have call successors, (76), 38 states have call predecessors, (76), 43 states have return successors, (101), 68 states have call predecessors, (101), 73 states have call successors, (101) [2022-07-13 21:09:14,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1651 transitions. [2022-07-13 21:09:14,009 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1651 transitions. Word has length 88 [2022-07-13 21:09:14,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:14,010 INFO L495 AbstractCegarLoop]: Abstraction has 1210 states and 1651 transitions. [2022-07-13 21:09:14,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-13 21:09:14,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1651 transitions. [2022-07-13 21:09:14,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-13 21:09:14,013 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:14,013 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 21:09:14,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-13 21:09:14,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:09:14,229 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:14,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:14,229 INFO L85 PathProgramCache]: Analyzing trace with hash -418359059, now seen corresponding path program 1 times [2022-07-13 21:09:14,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:14,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770411409] [2022-07-13 21:09:14,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:14,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:14,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:09:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:14,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 21:09:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:14,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 21:09:14,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:14,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 21:09:14,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:14,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 21:09:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:14,281 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-13 21:09:14,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:14,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770411409] [2022-07-13 21:09:14,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770411409] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:09:14,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651571249] [2022-07-13 21:09:14,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:14,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:09:14,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:09:14,283 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) [2022-07-13 21:09:14,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 21:09:14,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:14,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 21:09:14,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:09:14,417 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 21:09:14,417 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:09:14,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651571249] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:14,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:09:14,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-13 21:09:14,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574351720] [2022-07-13 21:09:14,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:14,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:09:14,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:14,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:09:14,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:09:14,419 INFO L87 Difference]: Start difference. First operand 1210 states and 1651 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-13 21:09:14,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:14,451 INFO L93 Difference]: Finished difference Result 1520 states and 2032 transitions. [2022-07-13 21:09:14,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:09:14,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 103 [2022-07-13 21:09:14,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:14,453 INFO L225 Difference]: With dead ends: 1520 [2022-07-13 21:09:14,453 INFO L226 Difference]: Without dead ends: 410 [2022-07-13 21:09:14,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:09:14,455 INFO L413 NwaCegarLoop]: 782 mSDtfsCounter, 60 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:14,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 1496 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:09:14,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-07-13 21:09:14,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2022-07-13 21:09:14,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 374 states have (on average 1.585561497326203) internal successors, (593), 376 states have internal predecessors, (593), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-07-13 21:09:14,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 649 transitions. [2022-07-13 21:09:14,464 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 649 transitions. Word has length 103 [2022-07-13 21:09:14,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:14,465 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 649 transitions. [2022-07-13 21:09:14,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-13 21:09:14,465 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 649 transitions. [2022-07-13 21:09:14,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:09:14,466 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:14,466 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:09:14,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 21:09:14,679 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,SelfDestructingSolverStorable10 [2022-07-13 21:09:14,680 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:14,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:14,680 INFO L85 PathProgramCache]: Analyzing trace with hash -2055015172, now seen corresponding path program 1 times [2022-07-13 21:09:14,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:14,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3769218] [2022-07-13 21:09:14,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:14,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:14,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:09:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:14,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:09:14,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:14,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:09:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:14,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:09:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:14,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:09:14,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:14,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:09:14,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:14,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3769218] [2022-07-13 21:09:14,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3769218] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:14,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:09:14,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:09:14,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112819856] [2022-07-13 21:09:14,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:14,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:09:14,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:14,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:09:14,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:09:14,781 INFO L87 Difference]: Start difference. First operand 410 states and 649 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:09:15,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:16,000 INFO L93 Difference]: Finished difference Result 964 states and 1549 transitions. [2022-07-13 21:09:16,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 21:09:16,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:09:16,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:16,002 INFO L225 Difference]: With dead ends: 964 [2022-07-13 21:09:16,002 INFO L226 Difference]: Without dead ends: 563 [2022-07-13 21:09:16,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:09:16,004 INFO L413 NwaCegarLoop]: 713 mSDtfsCounter, 1119 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:16,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1144 Valid, 1149 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 21:09:16,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-07-13 21:09:16,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 410. [2022-07-13 21:09:16,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 374 states have (on average 1.5828877005347595) internal successors, (592), 376 states have internal predecessors, (592), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-07-13 21:09:16,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 648 transitions. [2022-07-13 21:09:16,021 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 648 transitions. Word has length 190 [2022-07-13 21:09:16,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:16,021 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 648 transitions. [2022-07-13 21:09:16,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:09:16,022 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 648 transitions. [2022-07-13 21:09:16,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:09:16,024 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:16,024 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:09:16,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 21:09:16,024 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:16,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:16,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1767612478, now seen corresponding path program 1 times [2022-07-13 21:09:16,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:16,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853692014] [2022-07-13 21:09:16,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:16,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:16,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:16,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:09:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:16,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:09:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:16,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:09:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:16,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:09:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:16,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:09:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:16,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:09:16,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:16,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853692014] [2022-07-13 21:09:16,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853692014] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:16,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:09:16,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:09:16,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087539248] [2022-07-13 21:09:16,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:16,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:09:16,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:16,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:09:16,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:09:16,150 INFO L87 Difference]: Start difference. First operand 410 states and 648 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:09:17,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:17,342 INFO L93 Difference]: Finished difference Result 956 states and 1532 transitions. [2022-07-13 21:09:17,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 21:09:17,343 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:09:17,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:17,345 INFO L225 Difference]: With dead ends: 956 [2022-07-13 21:09:17,345 INFO L226 Difference]: Without dead ends: 563 [2022-07-13 21:09:17,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:09:17,347 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 1110 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:17,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 1147 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 21:09:17,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-07-13 21:09:17,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 410. [2022-07-13 21:09:17,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 374 states have (on average 1.5802139037433156) internal successors, (591), 376 states have internal predecessors, (591), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-07-13 21:09:17,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 647 transitions. [2022-07-13 21:09:17,367 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 647 transitions. Word has length 190 [2022-07-13 21:09:17,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:17,368 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 647 transitions. [2022-07-13 21:09:17,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:09:17,369 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 647 transitions. [2022-07-13 21:09:17,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:09:17,370 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:17,370 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:09:17,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 21:09:17,370 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:17,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:17,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1158894208, now seen corresponding path program 1 times [2022-07-13 21:09:17,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:17,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080663562] [2022-07-13 21:09:17,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:17,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:17,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:09:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:17,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:09:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:17,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:09:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:17,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:09:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:17,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:09:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:17,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:09:17,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:17,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080663562] [2022-07-13 21:09:17,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080663562] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:17,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:09:17,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:09:17,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119892339] [2022-07-13 21:09:17,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:17,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:09:17,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:17,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:09:17,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:09:17,503 INFO L87 Difference]: Start difference. First operand 410 states and 647 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:09:19,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:19,907 INFO L93 Difference]: Finished difference Result 1512 states and 2438 transitions. [2022-07-13 21:09:19,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:09:19,908 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:09:19,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:19,911 INFO L225 Difference]: With dead ends: 1512 [2022-07-13 21:09:19,912 INFO L226 Difference]: Without dead ends: 1124 [2022-07-13 21:09:19,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:09:19,913 INFO L413 NwaCegarLoop]: 770 mSDtfsCounter, 1683 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 2164 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1703 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 2292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:19,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1703 Valid, 1816 Invalid, 2292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2164 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 21:09:19,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2022-07-13 21:09:19,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 817. [2022-07-13 21:09:19,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 752 states have (on average 1.5930851063829787) internal successors, (1198), 755 states have internal predecessors, (1198), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2022-07-13 21:09:19,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1301 transitions. [2022-07-13 21:09:19,952 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1301 transitions. Word has length 190 [2022-07-13 21:09:19,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:19,952 INFO L495 AbstractCegarLoop]: Abstraction has 817 states and 1301 transitions. [2022-07-13 21:09:19,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:09:19,952 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1301 transitions. [2022-07-13 21:09:19,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:09:19,953 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:19,954 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:09:19,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 21:09:19,954 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:19,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:19,954 INFO L85 PathProgramCache]: Analyzing trace with hash -650115394, now seen corresponding path program 1 times [2022-07-13 21:09:19,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:19,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211849036] [2022-07-13 21:09:19,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:19,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:19,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:09:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:20,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:09:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:20,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:09:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:20,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:09:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:20,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:09:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:20,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:09:20,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:20,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211849036] [2022-07-13 21:09:20,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211849036] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:20,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:09:20,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:09:20,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909218528] [2022-07-13 21:09:20,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:20,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:09:20,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:20,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:09:20,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:09:20,084 INFO L87 Difference]: Start difference. First operand 817 states and 1301 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:09:23,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:23,125 INFO L93 Difference]: Finished difference Result 2500 states and 4041 transitions. [2022-07-13 21:09:23,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:09:23,131 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:09:23,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:23,136 INFO L225 Difference]: With dead ends: 2500 [2022-07-13 21:09:23,136 INFO L226 Difference]: Without dead ends: 1705 [2022-07-13 21:09:23,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:09:23,138 INFO L413 NwaCegarLoop]: 1105 mSDtfsCounter, 1714 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 3371 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1734 SdHoareTripleChecker+Valid, 3189 SdHoareTripleChecker+Invalid, 3452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 3371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:23,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1734 Valid, 3189 Invalid, 3452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 3371 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 21:09:23,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2022-07-13 21:09:23,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1195. [2022-07-13 21:09:23,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 1101 states have (on average 1.586739327883742) internal successors, (1747), 1105 states have internal predecessors, (1747), 73 states have call successors, (73), 19 states have call predecessors, (73), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2022-07-13 21:09:23,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1896 transitions. [2022-07-13 21:09:23,201 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1896 transitions. Word has length 190 [2022-07-13 21:09:23,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:23,201 INFO L495 AbstractCegarLoop]: Abstraction has 1195 states and 1896 transitions. [2022-07-13 21:09:23,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:09:23,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1896 transitions. [2022-07-13 21:09:23,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:09:23,203 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:23,203 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:09:23,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 21:09:23,203 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:23,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:23,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1721601472, now seen corresponding path program 1 times [2022-07-13 21:09:23,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:23,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105756805] [2022-07-13 21:09:23,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:23,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:23,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:09:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:23,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:09:23,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:23,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:09:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:23,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:09:23,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:23,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:09:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:23,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:09:23,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:23,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105756805] [2022-07-13 21:09:23,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105756805] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:23,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:09:23,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:09:23,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223752696] [2022-07-13 21:09:23,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:23,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:09:23,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:23,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:09:23,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:09:23,331 INFO L87 Difference]: Start difference. First operand 1195 states and 1896 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:09:26,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:26,441 INFO L93 Difference]: Finished difference Result 3957 states and 6384 transitions. [2022-07-13 21:09:26,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:09:26,452 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:09:26,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:26,463 INFO L225 Difference]: With dead ends: 3957 [2022-07-13 21:09:26,463 INFO L226 Difference]: Without dead ends: 2784 [2022-07-13 21:09:26,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:09:26,467 INFO L413 NwaCegarLoop]: 1097 mSDtfsCounter, 1711 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 3373 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1731 SdHoareTripleChecker+Valid, 3181 SdHoareTripleChecker+Invalid, 3457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:26,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1731 Valid, 3181 Invalid, 3457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 3373 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 21:09:26,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2784 states. [2022-07-13 21:09:26,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2784 to 1952. [2022-07-13 21:09:26,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1800 states have (on average 1.5811111111111111) internal successors, (2846), 1806 states have internal predecessors, (2846), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2022-07-13 21:09:26,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 3091 transitions. [2022-07-13 21:09:26,595 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 3091 transitions. Word has length 190 [2022-07-13 21:09:26,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:26,596 INFO L495 AbstractCegarLoop]: Abstraction has 1952 states and 3091 transitions. [2022-07-13 21:09:26,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:09:26,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 3091 transitions. [2022-07-13 21:09:26,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:09:26,598 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:26,598 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:09:26,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 21:09:26,598 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:26,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:26,599 INFO L85 PathProgramCache]: Analyzing trace with hash -3006850, now seen corresponding path program 1 times [2022-07-13 21:09:26,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:26,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129675585] [2022-07-13 21:09:26,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:26,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:26,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:09:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:26,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:09:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:26,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:09:26,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:26,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:09:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:26,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:09:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:26,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:09:26,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:26,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129675585] [2022-07-13 21:09:26,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129675585] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:26,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:09:26,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:09:26,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058481968] [2022-07-13 21:09:26,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:26,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:09:26,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:26,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:09:26,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:09:26,742 INFO L87 Difference]: Start difference. First operand 1952 states and 3091 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:09:28,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:28,368 INFO L93 Difference]: Finished difference Result 4702 states and 7570 transitions. [2022-07-13 21:09:28,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:09:28,369 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:09:28,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:28,377 INFO L225 Difference]: With dead ends: 4702 [2022-07-13 21:09:28,377 INFO L226 Difference]: Without dead ends: 2772 [2022-07-13 21:09:28,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:09:28,381 INFO L413 NwaCegarLoop]: 703 mSDtfsCounter, 1216 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 1615 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1237 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:28,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1237 Valid, 1735 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 21:09:28,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2772 states. [2022-07-13 21:09:28,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2772 to 1952. [2022-07-13 21:09:28,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1800 states have (on average 1.5783333333333334) internal successors, (2841), 1806 states have internal predecessors, (2841), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2022-07-13 21:09:28,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 3086 transitions. [2022-07-13 21:09:28,533 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 3086 transitions. Word has length 190 [2022-07-13 21:09:28,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:28,533 INFO L495 AbstractCegarLoop]: Abstraction has 1952 states and 3086 transitions. [2022-07-13 21:09:28,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:09:28,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 3086 transitions. [2022-07-13 21:09:28,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:09:28,535 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:28,535 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:09:28,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 21:09:28,536 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:28,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:28,536 INFO L85 PathProgramCache]: Analyzing trace with hash 495549952, now seen corresponding path program 1 times [2022-07-13 21:09:28,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:28,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672243952] [2022-07-13 21:09:28,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:28,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:28,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:09:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:28,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:09:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:28,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:09:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:28,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:09:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:28,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:09:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:28,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:09:28,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:28,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672243952] [2022-07-13 21:09:28,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672243952] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:28,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:09:28,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:09:28,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909273833] [2022-07-13 21:09:28,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:28,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:09:28,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:28,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:09:28,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:09:28,665 INFO L87 Difference]: Start difference. First operand 1952 states and 3086 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:09:31,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:31,900 INFO L93 Difference]: Finished difference Result 6747 states and 10817 transitions. [2022-07-13 21:09:31,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:09:31,906 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:09:31,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:31,927 INFO L225 Difference]: With dead ends: 6747 [2022-07-13 21:09:31,927 INFO L226 Difference]: Without dead ends: 4817 [2022-07-13 21:09:31,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:09:31,932 INFO L413 NwaCegarLoop]: 1081 mSDtfsCounter, 1701 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 3332 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1721 SdHoareTripleChecker+Valid, 3165 SdHoareTripleChecker+Invalid, 3420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:31,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1721 Valid, 3165 Invalid, 3420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3332 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 21:09:31,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4817 states. [2022-07-13 21:09:32,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4817 to 3476. [2022-07-13 21:09:32,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3476 states, 3208 states have (on average 1.5741895261845387) internal successors, (5050), 3218 states have internal predecessors, (5050), 205 states have call successors, (205), 55 states have call predecessors, (205), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2022-07-13 21:09:32,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3476 states to 3476 states and 5493 transitions. [2022-07-13 21:09:32,198 INFO L78 Accepts]: Start accepts. Automaton has 3476 states and 5493 transitions. Word has length 190 [2022-07-13 21:09:32,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:32,199 INFO L495 AbstractCegarLoop]: Abstraction has 3476 states and 5493 transitions. [2022-07-13 21:09:32,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:09:32,200 INFO L276 IsEmpty]: Start isEmpty. Operand 3476 states and 5493 transitions. [2022-07-13 21:09:32,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:09:32,201 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:32,202 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:09:32,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 21:09:32,202 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:32,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:32,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1899419138, now seen corresponding path program 1 times [2022-07-13 21:09:32,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:32,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345591225] [2022-07-13 21:09:32,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:32,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:32,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:32,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:09:32,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:32,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:09:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:32,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:09:32,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:32,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:09:32,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:32,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:09:32,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:32,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:09:32,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:32,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345591225] [2022-07-13 21:09:32,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345591225] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:32,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:09:32,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:09:32,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806650352] [2022-07-13 21:09:32,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:32,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:09:32,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:32,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:09:32,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:09:32,346 INFO L87 Difference]: Start difference. First operand 3476 states and 5493 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:09:34,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:34,123 INFO L93 Difference]: Finished difference Result 8301 states and 13310 transitions. [2022-07-13 21:09:34,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:09:34,124 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:09:34,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:34,135 INFO L225 Difference]: With dead ends: 8301 [2022-07-13 21:09:34,135 INFO L226 Difference]: Without dead ends: 4847 [2022-07-13 21:09:34,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:09:34,141 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 1214 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 1590 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:34,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1235 Valid, 1726 Invalid, 1681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1590 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 21:09:34,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4847 states. [2022-07-13 21:09:34,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4847 to 3476. [2022-07-13 21:09:34,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3476 states, 3208 states have (on average 1.5713840399002494) internal successors, (5041), 3218 states have internal predecessors, (5041), 205 states have call successors, (205), 55 states have call predecessors, (205), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2022-07-13 21:09:34,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3476 states to 3476 states and 5484 transitions. [2022-07-13 21:09:34,409 INFO L78 Accepts]: Start accepts. Automaton has 3476 states and 5484 transitions. Word has length 190 [2022-07-13 21:09:34,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:34,409 INFO L495 AbstractCegarLoop]: Abstraction has 3476 states and 5484 transitions. [2022-07-13 21:09:34,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:09:34,410 INFO L276 IsEmpty]: Start isEmpty. Operand 3476 states and 5484 transitions. [2022-07-13 21:09:34,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:09:34,412 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:34,412 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:09:34,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 21:09:34,412 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:34,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:34,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1113421248, now seen corresponding path program 1 times [2022-07-13 21:09:34,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:34,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593586503] [2022-07-13 21:09:34,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:34,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:34,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:09:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:34,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:09:34,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:34,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:09:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:34,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:09:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:34,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:09:34,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:34,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:09:34,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:34,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593586503] [2022-07-13 21:09:34,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593586503] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:34,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:09:34,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:09:34,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247225591] [2022-07-13 21:09:34,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:34,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:09:34,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:34,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:09:34,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:09:34,516 INFO L87 Difference]: Start difference. First operand 3476 states and 5484 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:09:38,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:38,009 INFO L93 Difference]: Finished difference Result 12341 states and 19704 transitions. [2022-07-13 21:09:38,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:09:38,009 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:09:38,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:38,032 INFO L225 Difference]: With dead ends: 12341 [2022-07-13 21:09:38,032 INFO L226 Difference]: Without dead ends: 8887 [2022-07-13 21:09:38,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:09:38,040 INFO L413 NwaCegarLoop]: 1070 mSDtfsCounter, 1693 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 3305 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 3154 SdHoareTripleChecker+Invalid, 3393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:38,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1713 Valid, 3154 Invalid, 3393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3305 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 21:09:38,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8887 states. [2022-07-13 21:09:38,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8887 to 6536. [2022-07-13 21:09:38,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6536 states, 6036 states have (on average 1.5677601060304838) internal successors, (9463), 6054 states have internal predecessors, (9463), 381 states have call successors, (381), 103 states have call predecessors, (381), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2022-07-13 21:09:38,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6536 states to 6536 states and 10320 transitions. [2022-07-13 21:09:38,603 INFO L78 Accepts]: Start accepts. Automaton has 6536 states and 10320 transitions. Word has length 190 [2022-07-13 21:09:38,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:38,603 INFO L495 AbstractCegarLoop]: Abstraction has 6536 states and 10320 transitions. [2022-07-13 21:09:38,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:09:38,604 INFO L276 IsEmpty]: Start isEmpty. Operand 6536 states and 10320 transitions. [2022-07-13 21:09:38,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:09:38,610 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:38,610 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:09:38,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 21:09:38,610 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:38,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:38,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1780803138, now seen corresponding path program 1 times [2022-07-13 21:09:38,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:38,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767233717] [2022-07-13 21:09:38,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:38,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:38,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:09:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:38,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:09:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:38,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:09:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:38,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:09:38,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:38,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:09:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:38,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:09:38,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:38,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767233717] [2022-07-13 21:09:38,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767233717] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:38,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:09:38,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:09:38,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306740036] [2022-07-13 21:09:38,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:38,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:09:38,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:38,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:09:38,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:09:38,756 INFO L87 Difference]: Start difference. First operand 6536 states and 10320 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:09:40,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:40,725 INFO L93 Difference]: Finished difference Result 15505 states and 24817 transitions. [2022-07-13 21:09:40,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:09:40,726 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:09:40,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:40,745 INFO L225 Difference]: With dead ends: 15505 [2022-07-13 21:09:40,745 INFO L226 Difference]: Without dead ends: 8991 [2022-07-13 21:09:40,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:09:40,759 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 1470 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 1355 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 1463 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:40,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1491 Valid, 1463 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1355 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 21:09:40,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8991 states. [2022-07-13 21:09:41,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8991 to 6536. [2022-07-13 21:09:41,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6536 states, 6036 states have (on average 1.5649436713055003) internal successors, (9446), 6054 states have internal predecessors, (9446), 381 states have call successors, (381), 103 states have call predecessors, (381), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2022-07-13 21:09:41,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6536 states to 6536 states and 10303 transitions. [2022-07-13 21:09:41,256 INFO L78 Accepts]: Start accepts. Automaton has 6536 states and 10303 transitions. Word has length 190 [2022-07-13 21:09:41,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:41,257 INFO L495 AbstractCegarLoop]: Abstraction has 6536 states and 10303 transitions. [2022-07-13 21:09:41,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:09:41,257 INFO L276 IsEmpty]: Start isEmpty. Operand 6536 states and 10303 transitions. [2022-07-13 21:09:41,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:09:41,261 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:41,262 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:09:41,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 21:09:41,262 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:41,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:41,263 INFO L85 PathProgramCache]: Analyzing trace with hash -414425728, now seen corresponding path program 1 times [2022-07-13 21:09:41,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:41,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756868902] [2022-07-13 21:09:41,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:41,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:41,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:09:41,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:41,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:09:41,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:41,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:09:41,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:41,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:09:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:41,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:09:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:41,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:09:41,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:41,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756868902] [2022-07-13 21:09:41,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756868902] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:41,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:09:41,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:09:41,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079803761] [2022-07-13 21:09:41,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:41,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:09:41,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:41,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:09:41,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:09:41,390 INFO L87 Difference]: Start difference. First operand 6536 states and 10303 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:09:45,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:45,776 INFO L93 Difference]: Finished difference Result 23529 states and 37494 transitions. [2022-07-13 21:09:45,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:09:45,777 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:09:45,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:45,821 INFO L225 Difference]: With dead ends: 23529 [2022-07-13 21:09:45,821 INFO L226 Difference]: Without dead ends: 17015 [2022-07-13 21:09:45,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:09:45,839 INFO L413 NwaCegarLoop]: 1059 mSDtfsCounter, 1685 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 3278 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1705 SdHoareTripleChecker+Valid, 3143 SdHoareTripleChecker+Invalid, 3366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:45,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1705 Valid, 3143 Invalid, 3366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3278 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 21:09:45,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17015 states. [2022-07-13 21:09:46,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17015 to 12686. [2022-07-13 21:09:46,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12686 states, 11722 states have (on average 1.5620201330830916) internal successors, (18310), 11756 states have internal predecessors, (18310), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2022-07-13 21:09:46,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12686 states to 12686 states and 20049 transitions. [2022-07-13 21:09:46,875 INFO L78 Accepts]: Start accepts. Automaton has 12686 states and 20049 transitions. Word has length 190 [2022-07-13 21:09:46,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:46,875 INFO L495 AbstractCegarLoop]: Abstraction has 12686 states and 20049 transitions. [2022-07-13 21:09:46,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:09:46,875 INFO L276 IsEmpty]: Start isEmpty. Operand 12686 states and 20049 transitions. [2022-07-13 21:09:46,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:09:46,881 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:46,881 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:09:46,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 21:09:46,881 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:46,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:46,881 INFO L85 PathProgramCache]: Analyzing trace with hash -69597566, now seen corresponding path program 1 times [2022-07-13 21:09:46,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:46,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770384522] [2022-07-13 21:09:46,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:46,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:46,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:46,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:09:46,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:46,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:09:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:46,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:09:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:46,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:09:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:46,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:09:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:46,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:09:46,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:46,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770384522] [2022-07-13 21:09:46,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770384522] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:46,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:09:46,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:09:46,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137242398] [2022-07-13 21:09:46,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:46,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:09:46,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:46,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:09:46,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:09:46,998 INFO L87 Difference]: Start difference. First operand 12686 states and 20049 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:09:49,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:49,977 INFO L93 Difference]: Finished difference Result 29913 states and 47916 transitions. [2022-07-13 21:09:49,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:09:49,977 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:09:49,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:50,017 INFO L225 Difference]: With dead ends: 29913 [2022-07-13 21:09:50,018 INFO L226 Difference]: Without dead ends: 17249 [2022-07-13 21:09:50,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:09:50,041 INFO L413 NwaCegarLoop]: 680 mSDtfsCounter, 1391 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:50,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1412 Valid, 1496 Invalid, 1502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 21:09:50,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17249 states. [2022-07-13 21:09:51,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17249 to 12686. [2022-07-13 21:09:51,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12686 states, 11722 states have (on average 1.559204913837229) internal successors, (18277), 11756 states have internal predecessors, (18277), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2022-07-13 21:09:51,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12686 states to 12686 states and 20016 transitions. [2022-07-13 21:09:51,157 INFO L78 Accepts]: Start accepts. Automaton has 12686 states and 20016 transitions. Word has length 190 [2022-07-13 21:09:51,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:51,157 INFO L495 AbstractCegarLoop]: Abstraction has 12686 states and 20016 transitions. [2022-07-13 21:09:51,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:09:51,158 INFO L276 IsEmpty]: Start isEmpty. Operand 12686 states and 20016 transitions. [2022-07-13 21:09:51,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:09:51,163 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:51,163 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:09:51,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 21:09:51,163 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:51,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:51,164 INFO L85 PathProgramCache]: Analyzing trace with hash 911357248, now seen corresponding path program 1 times [2022-07-13 21:09:51,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:51,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713307616] [2022-07-13 21:09:51,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:51,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:51,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:51,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:09:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:51,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:09:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:51,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:09:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:51,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:09:51,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:51,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:09:51,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:51,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:09:51,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:51,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713307616] [2022-07-13 21:09:51,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713307616] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:51,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:09:51,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:09:51,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537422807] [2022-07-13 21:09:51,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:51,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:09:51,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:51,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:09:51,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:09:51,275 INFO L87 Difference]: Start difference. First operand 12686 states and 20016 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:09:57,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:57,648 INFO L93 Difference]: Finished difference Result 45907 states and 73178 transitions. [2022-07-13 21:09:57,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:09:57,648 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:09:57,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:57,722 INFO L225 Difference]: With dead ends: 45907 [2022-07-13 21:09:57,722 INFO L226 Difference]: Without dead ends: 33243 [2022-07-13 21:09:57,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:09:57,747 INFO L413 NwaCegarLoop]: 1046 mSDtfsCounter, 1680 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 3248 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1700 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 3339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 3248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:57,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1700 Valid, 3130 Invalid, 3339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 3248 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 21:09:57,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33243 states. [2022-07-13 21:10:00,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33243 to 25048. [2022-07-13 21:10:00,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25048 states, 23156 states have (on average 1.5567887372603213) internal successors, (36049), 23222 states have internal predecessors, (36049), 1437 states have call successors, (1437), 391 states have call predecessors, (1437), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2022-07-13 21:10:00,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25048 states to 25048 states and 39714 transitions. [2022-07-13 21:10:00,163 INFO L78 Accepts]: Start accepts. Automaton has 25048 states and 39714 transitions. Word has length 190 [2022-07-13 21:10:00,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:10:00,163 INFO L495 AbstractCegarLoop]: Abstraction has 25048 states and 39714 transitions. [2022-07-13 21:10:00,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:10:00,163 INFO L276 IsEmpty]: Start isEmpty. Operand 25048 states and 39714 transitions. [2022-07-13 21:10:00,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:10:00,172 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:10:00,173 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:10:00,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 21:10:00,173 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:10:00,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:10:00,173 INFO L85 PathProgramCache]: Analyzing trace with hash -858114366, now seen corresponding path program 1 times [2022-07-13 21:10:00,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:10:00,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537265434] [2022-07-13 21:10:00,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:10:00,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:10:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:00,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:10:00,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:00,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:10:00,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:00,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:10:00,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:00,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:10:00,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:00,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:10:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:00,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:10:00,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:10:00,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537265434] [2022-07-13 21:10:00,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537265434] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:10:00,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:10:00,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:10:00,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518552916] [2022-07-13 21:10:00,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:10:00,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:10:00,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:10:00,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:10:00,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:10:00,301 INFO L87 Difference]: Start difference. First operand 25048 states and 39714 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:10:05,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:10:05,176 INFO L93 Difference]: Finished difference Result 58663 states and 94311 transitions. [2022-07-13 21:10:05,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:10:05,176 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:10:05,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:10:05,292 INFO L225 Difference]: With dead ends: 58663 [2022-07-13 21:10:05,293 INFO L226 Difference]: Without dead ends: 33637 [2022-07-13 21:10:05,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:10:05,346 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 1391 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 1485 SdHoareTripleChecker+Invalid, 1483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:10:05,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1412 Valid, 1485 Invalid, 1483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 21:10:05,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33637 states. [2022-07-13 21:10:07,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33637 to 25048. [2022-07-13 21:10:07,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25048 states, 23156 states have (on average 1.5539816894109517) internal successors, (35984), 23222 states have internal predecessors, (35984), 1437 states have call successors, (1437), 391 states have call predecessors, (1437), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2022-07-13 21:10:07,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25048 states to 25048 states and 39649 transitions. [2022-07-13 21:10:07,974 INFO L78 Accepts]: Start accepts. Automaton has 25048 states and 39649 transitions. Word has length 190 [2022-07-13 21:10:07,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:10:07,975 INFO L495 AbstractCegarLoop]: Abstraction has 25048 states and 39649 transitions. [2022-07-13 21:10:07,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:10:07,975 INFO L276 IsEmpty]: Start isEmpty. Operand 25048 states and 39649 transitions. [2022-07-13 21:10:07,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:10:07,985 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:10:07,985 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:10:07,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 21:10:07,985 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:10:07,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:10:07,986 INFO L85 PathProgramCache]: Analyzing trace with hash 2031661252, now seen corresponding path program 1 times [2022-07-13 21:10:07,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:10:07,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909981862] [2022-07-13 21:10:07,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:10:07,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:10:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:08,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:10:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:08,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:10:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:08,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:10:08,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:08,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:10:08,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:08,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:10:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:08,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:10:08,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:10:08,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909981862] [2022-07-13 21:10:08,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909981862] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:10:08,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:10:08,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:10:08,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975571180] [2022-07-13 21:10:08,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:10:08,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:10:08,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:10:08,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:10:08,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:10:08,105 INFO L87 Difference]: Start difference. First operand 25048 states and 39649 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:10:13,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:10:13,623 INFO L93 Difference]: Finished difference Result 58597 states and 93984 transitions. [2022-07-13 21:10:13,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:10:13,623 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:10:13,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:10:13,715 INFO L225 Difference]: With dead ends: 58597 [2022-07-13 21:10:13,716 INFO L226 Difference]: Without dead ends: 33571 [2022-07-13 21:10:13,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:10:13,763 INFO L413 NwaCegarLoop]: 665 mSDtfsCounter, 1208 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 1514 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1229 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 1610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:10:13,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1229 Valid, 1695 Invalid, 1610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1514 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 21:10:13,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33571 states. [2022-07-13 21:10:16,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33571 to 25048. [2022-07-13 21:10:16,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25048 states, 23156 states have (on average 1.5511746415615824) internal successors, (35919), 23222 states have internal predecessors, (35919), 1437 states have call successors, (1437), 391 states have call predecessors, (1437), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2022-07-13 21:10:16,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25048 states to 25048 states and 39584 transitions. [2022-07-13 21:10:16,246 INFO L78 Accepts]: Start accepts. Automaton has 25048 states and 39584 transitions. Word has length 190 [2022-07-13 21:10:16,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:10:16,246 INFO L495 AbstractCegarLoop]: Abstraction has 25048 states and 39584 transitions. [2022-07-13 21:10:16,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:10:16,246 INFO L276 IsEmpty]: Start isEmpty. Operand 25048 states and 39584 transitions. [2022-07-13 21:10:16,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:10:16,256 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:10:16,256 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:10:16,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 21:10:16,257 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:10:16,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:10:16,257 INFO L85 PathProgramCache]: Analyzing trace with hash -368972158, now seen corresponding path program 1 times [2022-07-13 21:10:16,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:10:16,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221945064] [2022-07-13 21:10:16,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:10:16,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:10:16,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:16,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:10:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:16,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:10:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:16,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:10:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:16,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:10:16,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:16,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:10:16,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:16,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:10:16,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:10:16,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221945064] [2022-07-13 21:10:16,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221945064] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:10:16,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:10:16,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:10:16,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842183904] [2022-07-13 21:10:16,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:10:16,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:10:16,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:10:16,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:10:16,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:10:16,366 INFO L87 Difference]: Start difference. First operand 25048 states and 39584 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:10:31,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:10:31,185 INFO L93 Difference]: Finished difference Result 101989 states and 162104 transitions. [2022-07-13 21:10:31,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:10:31,186 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:10:31,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:10:31,384 INFO L225 Difference]: With dead ends: 101989 [2022-07-13 21:10:31,384 INFO L226 Difference]: Without dead ends: 76963 [2022-07-13 21:10:31,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:10:31,448 INFO L413 NwaCegarLoop]: 1226 mSDtfsCounter, 1783 mSDsluCounter, 2073 mSDsCounter, 0 mSdLazyCounter, 3778 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1802 SdHoareTripleChecker+Valid, 3299 SdHoareTripleChecker+Invalid, 3871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:10:31,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1802 Valid, 3299 Invalid, 3871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 3778 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-13 21:10:31,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76963 states. [2022-07-13 21:10:36,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76963 to 49196. [2022-07-13 21:10:36,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49196 states, 45512 states have (on average 1.5469985937774653) internal successors, (70407), 45642 states have internal predecessors, (70407), 2781 states have call successors, (2781), 775 states have call predecessors, (2781), 902 states have return successors, (5094), 2906 states have call predecessors, (5094), 2779 states have call successors, (5094) [2022-07-13 21:10:36,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49196 states to 49196 states and 78282 transitions. [2022-07-13 21:10:36,858 INFO L78 Accepts]: Start accepts. Automaton has 49196 states and 78282 transitions. Word has length 190 [2022-07-13 21:10:36,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:10:36,858 INFO L495 AbstractCegarLoop]: Abstraction has 49196 states and 78282 transitions. [2022-07-13 21:10:36,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:10:36,858 INFO L276 IsEmpty]: Start isEmpty. Operand 49196 states and 78282 transitions. [2022-07-13 21:10:36,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:10:36,874 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:10:36,874 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:10:36,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 21:10:36,874 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:10:36,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:10:36,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1077608708, now seen corresponding path program 1 times [2022-07-13 21:10:36,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:10:36,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364668759] [2022-07-13 21:10:36,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:10:36,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:10:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:36,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:10:36,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:36,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:10:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:36,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:10:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:37,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:10:37,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:37,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:10:37,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:37,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:10:37,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:10:37,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364668759] [2022-07-13 21:10:37,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364668759] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:10:37,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:10:37,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:10:37,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101148167] [2022-07-13 21:10:37,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:10:37,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:10:37,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:10:37,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:10:37,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:10:37,114 INFO L87 Difference]: Start difference. First operand 49196 states and 78282 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:11:05,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:05,252 INFO L93 Difference]: Finished difference Result 198935 states and 318484 transitions. [2022-07-13 21:11:05,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:11:05,253 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:11:05,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:05,852 INFO L225 Difference]: With dead ends: 198935 [2022-07-13 21:11:05,853 INFO L226 Difference]: Without dead ends: 149761 [2022-07-13 21:11:06,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:11:06,080 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 2205 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 2858 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2239 SdHoareTripleChecker+Valid, 2128 SdHoareTripleChecker+Invalid, 2994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 2858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:06,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2239 Valid, 2128 Invalid, 2994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 2858 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 21:11:06,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149761 states. [2022-07-13 21:11:17,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149761 to 98061. [2022-07-13 21:11:17,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98061 states, 90857 states have (on average 1.5473216152855587) internal successors, (140585), 91115 states have internal predecessors, (140585), 5405 states have call successors, (5405), 1543 states have call predecessors, (5405), 1798 states have return successors, (12220), 5658 states have call predecessors, (12220), 5403 states have call successors, (12220) [2022-07-13 21:11:17,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98061 states to 98061 states and 158210 transitions. [2022-07-13 21:11:17,729 INFO L78 Accepts]: Start accepts. Automaton has 98061 states and 158210 transitions. Word has length 190 [2022-07-13 21:11:17,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:11:17,729 INFO L495 AbstractCegarLoop]: Abstraction has 98061 states and 158210 transitions. [2022-07-13 21:11:17,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:11:17,729 INFO L276 IsEmpty]: Start isEmpty. Operand 98061 states and 158210 transitions. [2022-07-13 21:11:17,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:11:17,756 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:17,756 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:11:17,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-13 21:11:17,756 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:17,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:17,757 INFO L85 PathProgramCache]: Analyzing trace with hash 154441282, now seen corresponding path program 1 times [2022-07-13 21:11:17,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:17,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196513364] [2022-07-13 21:11:17,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:17,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:17,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:17,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:17,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:11:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:17,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:11:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:17,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:11:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:17,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:11:17,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:17,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:11:17,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:17,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196513364] [2022-07-13 21:11:17,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196513364] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:11:17,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:11:17,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:11:17,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581358313] [2022-07-13 21:11:17,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:11:17,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:11:17,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:17,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:11:17,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:11:17,865 INFO L87 Difference]: Start difference. First operand 98061 states and 158210 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:11:37,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:37,688 INFO L93 Difference]: Finished difference Result 227529 states and 373789 transitions. [2022-07-13 21:11:37,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:11:37,688 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:11:37,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:38,309 INFO L225 Difference]: With dead ends: 227529 [2022-07-13 21:11:38,310 INFO L226 Difference]: Without dead ends: 129490 [2022-07-13 21:11:38,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:11:38,485 INFO L413 NwaCegarLoop]: 655 mSDtfsCounter, 1387 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1332 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1408 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:38,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1408 Valid, 1469 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1332 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 21:11:38,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129490 states. [2022-07-13 21:11:49,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129490 to 98061. [2022-07-13 21:11:49,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98061 states, 90857 states have (on average 1.5444929944858403) internal successors, (140328), 91115 states have internal predecessors, (140328), 5405 states have call successors, (5405), 1543 states have call predecessors, (5405), 1798 states have return successors, (12220), 5658 states have call predecessors, (12220), 5403 states have call successors, (12220) [2022-07-13 21:11:50,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98061 states to 98061 states and 157953 transitions. [2022-07-13 21:11:50,390 INFO L78 Accepts]: Start accepts. Automaton has 98061 states and 157953 transitions. Word has length 190 [2022-07-13 21:11:50,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:11:50,390 INFO L495 AbstractCegarLoop]: Abstraction has 98061 states and 157953 transitions. [2022-07-13 21:11:50,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:11:50,390 INFO L276 IsEmpty]: Start isEmpty. Operand 98061 states and 157953 transitions. [2022-07-13 21:11:50,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:11:50,416 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:50,416 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:11:50,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-13 21:11:50,416 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:50,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:50,416 INFO L85 PathProgramCache]: Analyzing trace with hash 540303684, now seen corresponding path program 1 times [2022-07-13 21:11:50,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:50,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693451755] [2022-07-13 21:11:50,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:50,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:50,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:50,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:11:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:50,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:11:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:50,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:11:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:50,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:11:50,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:50,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:11:50,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:50,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693451755] [2022-07-13 21:11:50,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693451755] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:11:50,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:11:50,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:11:50,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093895538] [2022-07-13 21:11:50,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:11:50,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:11:50,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:50,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:11:50,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:11:50,537 INFO L87 Difference]: Start difference. First operand 98061 states and 157953 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:12:44,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:12:44,336 INFO L93 Difference]: Finished difference Result 388404 states and 629698 transitions. [2022-07-13 21:12:44,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:12:44,337 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:12:44,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:12:45,513 INFO L225 Difference]: With dead ends: 388404 [2022-07-13 21:12:45,514 INFO L226 Difference]: Without dead ends: 290365 [2022-07-13 21:12:45,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:12:45,810 INFO L413 NwaCegarLoop]: 1007 mSDtfsCounter, 2021 mSDsluCounter, 2076 mSDsCounter, 0 mSdLazyCounter, 3150 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2055 SdHoareTripleChecker+Valid, 3083 SdHoareTripleChecker+Invalid, 3246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 3150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:12:45,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2055 Valid, 3083 Invalid, 3246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 3150 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 21:12:46,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290365 states.