./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/eca-rers2012/Problem03_label03.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 270b49fc6fbf3a6d565e1c23dc80c7cece24e766c52320c8c625102e15c9685f --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 11:24:10,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 11:24:10,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 11:24:10,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 11:24:10,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 11:24:10,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 11:24:10,431 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 11:24:10,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 11:24:10,434 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 11:24:10,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 11:24:10,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 11:24:10,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 11:24:10,438 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 11:24:10,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 11:24:10,439 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 11:24:10,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 11:24:10,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 11:24:10,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 11:24:10,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 11:24:10,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 11:24:10,446 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 11:24:10,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 11:24:10,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 11:24:10,455 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 11:24:10,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 11:24:10,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 11:24:10,459 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 11:24:10,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 11:24:10,460 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 11:24:10,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 11:24:10,462 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 11:24:10,462 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 11:24:10,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 11:24:10,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 11:24:10,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 11:24:10,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 11:24:10,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 11:24:10,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 11:24:10,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 11:24:10,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 11:24:10,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 11:24:10,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 11:24:10,468 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 11:24:10,488 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 11:24:10,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 11:24:10,488 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 11:24:10,489 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 11:24:10,489 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 11:24:10,490 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 11:24:10,490 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 11:24:10,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 11:24:10,491 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 11:24:10,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 11:24:10,491 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 11:24:10,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 11:24:10,492 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 11:24:10,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 11:24:10,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 11:24:10,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 11:24:10,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 11:24:10,493 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 11:24:10,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 11:24:10,493 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 11:24:10,493 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 11:24:10,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 11:24:10,494 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 11:24:10,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 11:24:10,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 11:24:10,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 11:24:10,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 11:24:10,495 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 11:24:10,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 11:24:10,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 11:24:10,496 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 11:24:10,496 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 11:24:10,496 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 11:24:10,497 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 270b49fc6fbf3a6d565e1c23dc80c7cece24e766c52320c8c625102e15c9685f [2022-07-22 11:24:10,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 11:24:10,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 11:24:10,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 11:24:10,741 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 11:24:10,741 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 11:24:10,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label03.c [2022-07-22 11:24:10,800 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1493da4e/06e6ca88c483485aa5fc3361b2ef70e8/FLAG0a08af60e [2022-07-22 11:24:11,349 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 11:24:11,350 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label03.c [2022-07-22 11:24:11,371 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1493da4e/06e6ca88c483485aa5fc3361b2ef70e8/FLAG0a08af60e [2022-07-22 11:24:11,814 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1493da4e/06e6ca88c483485aa5fc3361b2ef70e8 [2022-07-22 11:24:11,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 11:24:11,817 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 11:24:11,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 11:24:11,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 11:24:11,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 11:24:11,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:24:11" (1/1) ... [2022-07-22 11:24:11,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30287f27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:11, skipping insertion in model container [2022-07-22 11:24:11,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:24:11" (1/1) ... [2022-07-22 11:24:11,834 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 11:24:11,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 11:24:12,356 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/eca-rers2012/Problem03_label03.c[56355,56368] [2022-07-22 11:24:12,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 11:24:12,398 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 11:24:12,585 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/eca-rers2012/Problem03_label03.c[56355,56368] [2022-07-22 11:24:12,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 11:24:12,614 INFO L208 MainTranslator]: Completed translation [2022-07-22 11:24:12,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:12 WrapperNode [2022-07-22 11:24:12,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 11:24:12,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 11:24:12,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 11:24:12,616 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 11:24:12,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:12" (1/1) ... [2022-07-22 11:24:12,649 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:12" (1/1) ... [2022-07-22 11:24:12,719 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2022-07-22 11:24:12,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 11:24:12,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 11:24:12,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 11:24:12,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 11:24:12,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:12" (1/1) ... [2022-07-22 11:24:12,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:12" (1/1) ... [2022-07-22 11:24:12,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:12" (1/1) ... [2022-07-22 11:24:12,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:12" (1/1) ... [2022-07-22 11:24:12,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:12" (1/1) ... [2022-07-22 11:24:12,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:12" (1/1) ... [2022-07-22 11:24:12,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:12" (1/1) ... [2022-07-22 11:24:12,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 11:24:12,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 11:24:12,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 11:24:12,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 11:24:12,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:12" (1/1) ... [2022-07-22 11:24:12,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 11:24:12,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:24:12,913 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) [2022-07-22 11:24:12,934 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 [2022-07-22 11:24:12,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 11:24:12,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 11:24:12,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 11:24:12,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 11:24:13,044 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 11:24:13,046 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 11:24:14,402 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 11:24:14,412 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 11:24:14,413 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 11:24:14,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:24:14 BoogieIcfgContainer [2022-07-22 11:24:14,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 11:24:14,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 11:24:14,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 11:24:14,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 11:24:14,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 11:24:11" (1/3) ... [2022-07-22 11:24:14,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c11d1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:24:14, skipping insertion in model container [2022-07-22 11:24:14,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:24:12" (2/3) ... [2022-07-22 11:24:14,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c11d1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:24:14, skipping insertion in model container [2022-07-22 11:24:14,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:24:14" (3/3) ... [2022-07-22 11:24:14,429 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label03.c [2022-07-22 11:24:14,445 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 11:24:14,446 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 11:24:14,519 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 11:24:14,526 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@45c74733, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@167a3a4e [2022-07-22 11:24:14,527 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 11:24:14,542 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:14,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-22 11:24:14,560 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:24:14,561 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] [2022-07-22 11:24:14,561 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:24:14,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:24:14,568 INFO L85 PathProgramCache]: Analyzing trace with hash 303295378, now seen corresponding path program 1 times [2022-07-22 11:24:14,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:24:14,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629476232] [2022-07-22 11:24:14,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:14,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:24:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:15,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:24:15,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:24:15,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629476232] [2022-07-22 11:24:15,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629476232] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:24:15,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:24:15,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 11:24:15,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880601141] [2022-07-22 11:24:15,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:24:15,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:24:15,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:24:15,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:24:15,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:24:15,186 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:16,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:24:16,134 INFO L93 Difference]: Finished difference Result 810 states and 1445 transitions. [2022-07-22 11:24:16,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:24:16,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2022-07-22 11:24:16,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:24:16,148 INFO L225 Difference]: With dead ends: 810 [2022-07-22 11:24:16,149 INFO L226 Difference]: Without dead ends: 444 [2022-07-22 11:24:16,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:24:16,156 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 90 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 11:24:16,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 231 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 11:24:16,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-07-22 11:24:16,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2022-07-22 11:24:16,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 1.4288939051918736) internal successors, (633), 443 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:16,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 633 transitions. [2022-07-22 11:24:16,207 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 633 transitions. Word has length 164 [2022-07-22 11:24:16,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:24:16,208 INFO L495 AbstractCegarLoop]: Abstraction has 444 states and 633 transitions. [2022-07-22 11:24:16,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:16,208 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 633 transitions. [2022-07-22 11:24:16,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-22 11:24:16,211 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:24:16,212 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:24:16,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 11:24:16,212 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:24:16,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:24:16,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1704238513, now seen corresponding path program 1 times [2022-07-22 11:24:16,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:24:16,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968580873] [2022-07-22 11:24:16,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:16,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:24:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:16,354 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:24:16,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:24:16,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968580873] [2022-07-22 11:24:16,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968580873] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:24:16,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:24:16,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 11:24:16,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744378179] [2022-07-22 11:24:16,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:24:16,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:24:16,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:24:16,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:24:16,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:24:16,358 INFO L87 Difference]: Start difference. First operand 444 states and 633 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:17,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:24:17,099 INFO L93 Difference]: Finished difference Result 1312 states and 1878 transitions. [2022-07-22 11:24:17,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:24:17,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2022-07-22 11:24:17,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:24:17,103 INFO L225 Difference]: With dead ends: 1312 [2022-07-22 11:24:17,103 INFO L226 Difference]: Without dead ends: 870 [2022-07-22 11:24:17,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:24:17,106 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 11:24:17,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 90 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 11:24:17,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2022-07-22 11:24:17,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 856. [2022-07-22 11:24:17,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 855 states have (on average 1.3953216374269006) internal successors, (1193), 855 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:17,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1193 transitions. [2022-07-22 11:24:17,134 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1193 transitions. Word has length 172 [2022-07-22 11:24:17,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:24:17,135 INFO L495 AbstractCegarLoop]: Abstraction has 856 states and 1193 transitions. [2022-07-22 11:24:17,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:17,135 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1193 transitions. [2022-07-22 11:24:17,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-22 11:24:17,138 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:24:17,139 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:24:17,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 11:24:17,139 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:24:17,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:24:17,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1955143716, now seen corresponding path program 1 times [2022-07-22 11:24:17,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:24:17,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435642707] [2022-07-22 11:24:17,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:17,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:24:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:17,314 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 11:24:17,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:24:17,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435642707] [2022-07-22 11:24:17,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435642707] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:24:17,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:24:17,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:24:17,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736421102] [2022-07-22 11:24:17,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:24:17,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:24:17,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:24:17,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:24:17,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:24:17,318 INFO L87 Difference]: Start difference. First operand 856 states and 1193 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:18,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:24:18,075 INFO L93 Difference]: Finished difference Result 2530 states and 3532 transitions. [2022-07-22 11:24:18,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:24:18,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2022-07-22 11:24:18,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:24:18,087 INFO L225 Difference]: With dead ends: 2530 [2022-07-22 11:24:18,087 INFO L226 Difference]: Without dead ends: 1676 [2022-07-22 11:24:18,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:24:18,090 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 101 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 11:24:18,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 357 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 11:24:18,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2022-07-22 11:24:18,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1671. [2022-07-22 11:24:18,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1671 states, 1670 states have (on average 1.3323353293413174) internal successors, (2225), 1670 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:18,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 2225 transitions. [2022-07-22 11:24:18,130 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 2225 transitions. Word has length 179 [2022-07-22 11:24:18,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:24:18,131 INFO L495 AbstractCegarLoop]: Abstraction has 1671 states and 2225 transitions. [2022-07-22 11:24:18,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:18,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 2225 transitions. [2022-07-22 11:24:18,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-22 11:24:18,136 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:24:18,136 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:24:18,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 11:24:18,137 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:24:18,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:24:18,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1792558056, now seen corresponding path program 1 times [2022-07-22 11:24:18,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:24:18,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653479770] [2022-07-22 11:24:18,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:18,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:24:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:18,217 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 11:24:18,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:24:18,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653479770] [2022-07-22 11:24:18,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653479770] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:24:18,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:24:18,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:24:18,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093566233] [2022-07-22 11:24:18,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:24:18,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:24:18,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:24:18,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:24:18,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:24:18,221 INFO L87 Difference]: Start difference. First operand 1671 states and 2225 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:18,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:24:18,900 INFO L93 Difference]: Finished difference Result 4162 states and 5493 transitions. [2022-07-22 11:24:18,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:24:18,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2022-07-22 11:24:18,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:24:18,916 INFO L225 Difference]: With dead ends: 4162 [2022-07-22 11:24:18,916 INFO L226 Difference]: Without dead ends: 2493 [2022-07-22 11:24:18,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:24:18,931 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 216 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:24:18,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 368 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 11:24:18,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2493 states. [2022-07-22 11:24:18,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2493 to 2489. [2022-07-22 11:24:18,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2489 states, 2488 states have (on average 1.2885852090032155) internal successors, (3206), 2488 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:18,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2489 states to 2489 states and 3206 transitions. [2022-07-22 11:24:18,998 INFO L78 Accepts]: Start accepts. Automaton has 2489 states and 3206 transitions. Word has length 185 [2022-07-22 11:24:18,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:24:18,999 INFO L495 AbstractCegarLoop]: Abstraction has 2489 states and 3206 transitions. [2022-07-22 11:24:18,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:18,999 INFO L276 IsEmpty]: Start isEmpty. Operand 2489 states and 3206 transitions. [2022-07-22 11:24:19,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-07-22 11:24:19,004 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:24:19,005 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:24:19,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 11:24:19,005 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:24:19,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:24:19,006 INFO L85 PathProgramCache]: Analyzing trace with hash -669662216, now seen corresponding path program 1 times [2022-07-22 11:24:19,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:24:19,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30034555] [2022-07-22 11:24:19,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:19,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:24:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:19,090 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:24:19,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:24:19,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30034555] [2022-07-22 11:24:19,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30034555] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:24:19,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:24:19,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 11:24:19,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200906176] [2022-07-22 11:24:19,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:24:19,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:24:19,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:24:19,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:24:19,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:24:19,095 INFO L87 Difference]: Start difference. First operand 2489 states and 3206 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:19,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:24:19,764 INFO L93 Difference]: Finished difference Result 7030 states and 9147 transitions. [2022-07-22 11:24:19,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:24:19,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2022-07-22 11:24:19,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:24:19,781 INFO L225 Difference]: With dead ends: 7030 [2022-07-22 11:24:19,782 INFO L226 Difference]: Without dead ends: 4543 [2022-07-22 11:24:19,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:24:19,788 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 217 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:24:19,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 161 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 11:24:19,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4543 states. [2022-07-22 11:24:19,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4543 to 4537. [2022-07-22 11:24:19,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4537 states, 4536 states have (on average 1.2757936507936507) internal successors, (5787), 4536 states have internal predecessors, (5787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:19,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4537 states to 4537 states and 5787 transitions. [2022-07-22 11:24:19,870 INFO L78 Accepts]: Start accepts. Automaton has 4537 states and 5787 transitions. Word has length 192 [2022-07-22 11:24:19,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:24:19,871 INFO L495 AbstractCegarLoop]: Abstraction has 4537 states and 5787 transitions. [2022-07-22 11:24:19,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:19,875 INFO L276 IsEmpty]: Start isEmpty. Operand 4537 states and 5787 transitions. [2022-07-22 11:24:19,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-07-22 11:24:19,912 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:24:19,913 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:24:19,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 11:24:19,913 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:24:19,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:24:19,914 INFO L85 PathProgramCache]: Analyzing trace with hash 858730448, now seen corresponding path program 1 times [2022-07-22 11:24:19,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:24:19,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69837823] [2022-07-22 11:24:19,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:19,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:24:19,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:19,993 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-22 11:24:19,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:24:19,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69837823] [2022-07-22 11:24:19,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69837823] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:24:19,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:24:19,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:24:19,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722462309] [2022-07-22 11:24:19,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:24:19,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:24:19,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:24:19,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:24:19,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:24:19,996 INFO L87 Difference]: Start difference. First operand 4537 states and 5787 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:20,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:24:20,737 INFO L93 Difference]: Finished difference Result 10716 states and 13759 transitions. [2022-07-22 11:24:20,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:24:20,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 198 [2022-07-22 11:24:20,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:24:20,760 INFO L225 Difference]: With dead ends: 10716 [2022-07-22 11:24:20,760 INFO L226 Difference]: Without dead ends: 6181 [2022-07-22 11:24:20,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:24:20,768 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 216 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 11:24:20,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 362 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 11:24:20,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6181 states. [2022-07-22 11:24:20,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6181 to 6166. [2022-07-22 11:24:20,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6166 states, 6165 states have (on average 1.2491484184914843) internal successors, (7701), 6165 states have internal predecessors, (7701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:20,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6166 states to 6166 states and 7701 transitions. [2022-07-22 11:24:20,938 INFO L78 Accepts]: Start accepts. Automaton has 6166 states and 7701 transitions. Word has length 198 [2022-07-22 11:24:20,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:24:20,938 INFO L495 AbstractCegarLoop]: Abstraction has 6166 states and 7701 transitions. [2022-07-22 11:24:20,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:20,939 INFO L276 IsEmpty]: Start isEmpty. Operand 6166 states and 7701 transitions. [2022-07-22 11:24:20,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-07-22 11:24:20,948 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:24:20,948 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:24:20,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 11:24:20,949 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:24:20,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:24:20,950 INFO L85 PathProgramCache]: Analyzing trace with hash 780021312, now seen corresponding path program 1 times [2022-07-22 11:24:20,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:24:20,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899057395] [2022-07-22 11:24:20,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:20,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:24:20,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:21,022 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 11:24:21,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:24:21,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899057395] [2022-07-22 11:24:21,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899057395] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:24:21,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:24:21,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 11:24:21,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330072192] [2022-07-22 11:24:21,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:24:21,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:24:21,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:24:21,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:24:21,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:24:21,025 INFO L87 Difference]: Start difference. First operand 6166 states and 7701 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:21,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:24:21,722 INFO L93 Difference]: Finished difference Result 16204 states and 20267 transitions. [2022-07-22 11:24:21,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:24:21,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 211 [2022-07-22 11:24:21,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:24:21,756 INFO L225 Difference]: With dead ends: 16204 [2022-07-22 11:24:21,757 INFO L226 Difference]: Without dead ends: 10040 [2022-07-22 11:24:21,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:24:21,768 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 241 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:24:21,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 195 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 11:24:21,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10040 states. [2022-07-22 11:24:21,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10040 to 9834. [2022-07-22 11:24:21,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9834 states, 9833 states have (on average 1.214278450116953) internal successors, (11940), 9833 states have internal predecessors, (11940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:21,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9834 states to 9834 states and 11940 transitions. [2022-07-22 11:24:21,987 INFO L78 Accepts]: Start accepts. Automaton has 9834 states and 11940 transitions. Word has length 211 [2022-07-22 11:24:21,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:24:21,988 INFO L495 AbstractCegarLoop]: Abstraction has 9834 states and 11940 transitions. [2022-07-22 11:24:21,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:21,988 INFO L276 IsEmpty]: Start isEmpty. Operand 9834 states and 11940 transitions. [2022-07-22 11:24:22,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-07-22 11:24:22,004 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:24:22,004 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:24:22,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 11:24:22,005 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:24:22,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:24:22,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1990666119, now seen corresponding path program 1 times [2022-07-22 11:24:22,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:24:22,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304728441] [2022-07-22 11:24:22,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:22,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:24:22,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:22,092 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 11:24:22,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:24:22,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304728441] [2022-07-22 11:24:22,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304728441] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:24:22,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:24:22,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 11:24:22,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848507065] [2022-07-22 11:24:22,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:24:22,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:24:22,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:24:22,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:24:22,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:24:22,095 INFO L87 Difference]: Start difference. First operand 9834 states and 11940 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:22,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:24:22,979 INFO L93 Difference]: Finished difference Result 25185 states and 30805 transitions. [2022-07-22 11:24:22,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:24:22,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-07-22 11:24:22,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:24:23,012 INFO L225 Difference]: With dead ends: 25185 [2022-07-22 11:24:23,012 INFO L226 Difference]: Without dead ends: 15353 [2022-07-22 11:24:23,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:24:23,024 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 211 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 11:24:23,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 240 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 11:24:23,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15353 states. [2022-07-22 11:24:23,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15353 to 15326. [2022-07-22 11:24:23,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15326 states, 15325 states have (on average 1.2236867862969005) internal successors, (18753), 15325 states have internal predecessors, (18753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:23,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15326 states to 15326 states and 18753 transitions. [2022-07-22 11:24:23,270 INFO L78 Accepts]: Start accepts. Automaton has 15326 states and 18753 transitions. Word has length 222 [2022-07-22 11:24:23,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:24:23,270 INFO L495 AbstractCegarLoop]: Abstraction has 15326 states and 18753 transitions. [2022-07-22 11:24:23,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:23,271 INFO L276 IsEmpty]: Start isEmpty. Operand 15326 states and 18753 transitions. [2022-07-22 11:24:23,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-22 11:24:23,288 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:24:23,288 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:24:23,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 11:24:23,291 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:24:23,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:24:23,292 INFO L85 PathProgramCache]: Analyzing trace with hash -2101530961, now seen corresponding path program 1 times [2022-07-22 11:24:23,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:24:23,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923401295] [2022-07-22 11:24:23,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:23,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:24:23,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:23,377 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 11:24:23,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:24:23,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923401295] [2022-07-22 11:24:23,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923401295] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:24:23,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:24:23,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 11:24:23,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495914741] [2022-07-22 11:24:23,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:24:23,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:24:23,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:24:23,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:24:23,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:24:23,381 INFO L87 Difference]: Start difference. First operand 15326 states and 18753 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:24,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:24:24,238 INFO L93 Difference]: Finished difference Result 42277 states and 51957 transitions. [2022-07-22 11:24:24,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:24:24,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 226 [2022-07-22 11:24:24,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:24:24,294 INFO L225 Difference]: With dead ends: 42277 [2022-07-22 11:24:24,295 INFO L226 Difference]: Without dead ends: 26953 [2022-07-22 11:24:24,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:24:24,320 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 243 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 11:24:24,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 224 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 11:24:24,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26953 states. [2022-07-22 11:24:24,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26953 to 26940. [2022-07-22 11:24:24,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26940 states, 26939 states have (on average 1.2239504064738855) internal successors, (32972), 26939 states have internal predecessors, (32972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:24,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26940 states to 26940 states and 32972 transitions. [2022-07-22 11:24:24,788 INFO L78 Accepts]: Start accepts. Automaton has 26940 states and 32972 transitions. Word has length 226 [2022-07-22 11:24:24,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:24:24,791 INFO L495 AbstractCegarLoop]: Abstraction has 26940 states and 32972 transitions. [2022-07-22 11:24:24,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:24,792 INFO L276 IsEmpty]: Start isEmpty. Operand 26940 states and 32972 transitions. [2022-07-22 11:24:24,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-07-22 11:24:24,819 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:24:24,819 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:24:24,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 11:24:24,819 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:24:24,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:24:24,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1429918891, now seen corresponding path program 1 times [2022-07-22 11:24:24,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:24:24,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911547281] [2022-07-22 11:24:24,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:24,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:24:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:25,036 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-22 11:24:25,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:24:25,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911547281] [2022-07-22 11:24:25,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911547281] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:24:25,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:24:25,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:24:25,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254714723] [2022-07-22 11:24:25,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:24:25,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:24:25,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:24:25,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:24:25,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:24:25,039 INFO L87 Difference]: Start difference. First operand 26940 states and 32972 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:25,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:24:25,902 INFO L93 Difference]: Finished difference Result 58139 states and 72114 transitions. [2022-07-22 11:24:25,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:24:25,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 236 [2022-07-22 11:24:25,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:24:25,970 INFO L225 Difference]: With dead ends: 58139 [2022-07-22 11:24:25,971 INFO L226 Difference]: Without dead ends: 31404 [2022-07-22 11:24:26,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:24:26,003 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 188 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 11:24:26,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 406 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 11:24:26,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31404 states. [2022-07-22 11:24:26,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31404 to 30383. [2022-07-22 11:24:26,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30383 states, 30382 states have (on average 1.1827397801329735) internal successors, (35934), 30382 states have internal predecessors, (35934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:26,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30383 states to 30383 states and 35934 transitions. [2022-07-22 11:24:26,525 INFO L78 Accepts]: Start accepts. Automaton has 30383 states and 35934 transitions. Word has length 236 [2022-07-22 11:24:26,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:24:26,526 INFO L495 AbstractCegarLoop]: Abstraction has 30383 states and 35934 transitions. [2022-07-22 11:24:26,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:26,526 INFO L276 IsEmpty]: Start isEmpty. Operand 30383 states and 35934 transitions. [2022-07-22 11:24:26,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-07-22 11:24:26,555 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:24:26,556 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:24:26,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 11:24:26,556 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:24:26,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:24:26,557 INFO L85 PathProgramCache]: Analyzing trace with hash -118373097, now seen corresponding path program 1 times [2022-07-22 11:24:26,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:24:26,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114862781] [2022-07-22 11:24:26,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:26,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:24:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:26,744 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:24:26,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:24:26,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114862781] [2022-07-22 11:24:26,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114862781] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:24:26,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:24:26,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 11:24:26,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057425787] [2022-07-22 11:24:26,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:24:26,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:24:26,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:24:26,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:24:26,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:24:26,747 INFO L87 Difference]: Start difference. First operand 30383 states and 35934 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 2 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:27,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:24:27,583 INFO L93 Difference]: Finished difference Result 61194 states and 72869 transitions. [2022-07-22 11:24:27,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:24:27,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 2 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 239 [2022-07-22 11:24:27,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:24:27,747 INFO L225 Difference]: With dead ends: 61194 [2022-07-22 11:24:27,748 INFO L226 Difference]: Without dead ends: 40997 [2022-07-22 11:24:27,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:24:27,761 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 171 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 11:24:27,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 251 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 11:24:27,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40997 states. [2022-07-22 11:24:28,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40997 to 37709. [2022-07-22 11:24:28,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37709 states, 37708 states have (on average 1.1973321311127612) internal successors, (45149), 37708 states have internal predecessors, (45149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:28,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37709 states to 37709 states and 45149 transitions. [2022-07-22 11:24:28,362 INFO L78 Accepts]: Start accepts. Automaton has 37709 states and 45149 transitions. Word has length 239 [2022-07-22 11:24:28,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:24:28,362 INFO L495 AbstractCegarLoop]: Abstraction has 37709 states and 45149 transitions. [2022-07-22 11:24:28,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 2 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:28,364 INFO L276 IsEmpty]: Start isEmpty. Operand 37709 states and 45149 transitions. [2022-07-22 11:24:28,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-07-22 11:24:28,395 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:24:28,395 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:24:28,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 11:24:28,396 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:24:28,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:24:28,396 INFO L85 PathProgramCache]: Analyzing trace with hash -224143076, now seen corresponding path program 1 times [2022-07-22 11:24:28,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:24:28,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607512025] [2022-07-22 11:24:28,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:28,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:24:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:28,521 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 11:24:28,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:24:28,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607512025] [2022-07-22 11:24:28,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607512025] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:24:28,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:24:28,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:24:28,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111973039] [2022-07-22 11:24:28,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:24:28,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:24:28,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:24:28,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:24:28,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:24:28,524 INFO L87 Difference]: Start difference. First operand 37709 states and 45149 transitions. Second operand has 4 states, 4 states have (on average 61.75) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:29,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:24:29,498 INFO L93 Difference]: Finished difference Result 68655 states and 82313 transitions. [2022-07-22 11:24:29,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:24:29,498 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 252 [2022-07-22 11:24:29,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:24:29,550 INFO L225 Difference]: With dead ends: 68655 [2022-07-22 11:24:29,550 INFO L226 Difference]: Without dead ends: 31968 [2022-07-22 11:24:29,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:24:29,575 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 520 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 11:24:29,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 59 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 11:24:29,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31968 states. [2022-07-22 11:24:30,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31968 to 31764. [2022-07-22 11:24:30,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31764 states, 31763 states have (on average 1.1127097566350785) internal successors, (35343), 31763 states have internal predecessors, (35343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:30,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31764 states to 31764 states and 35343 transitions. [2022-07-22 11:24:30,092 INFO L78 Accepts]: Start accepts. Automaton has 31764 states and 35343 transitions. Word has length 252 [2022-07-22 11:24:30,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:24:30,093 INFO L495 AbstractCegarLoop]: Abstraction has 31764 states and 35343 transitions. [2022-07-22 11:24:30,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:30,093 INFO L276 IsEmpty]: Start isEmpty. Operand 31764 states and 35343 transitions. [2022-07-22 11:24:30,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-07-22 11:24:30,113 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:24:30,113 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:24:30,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 11:24:30,114 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:24:30,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:24:30,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1480951868, now seen corresponding path program 1 times [2022-07-22 11:24:30,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:24:30,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748936049] [2022-07-22 11:24:30,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:30,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:24:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:30,223 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:24:30,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:24:30,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748936049] [2022-07-22 11:24:30,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748936049] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:24:30,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:24:30,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:24:30,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538638316] [2022-07-22 11:24:30,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:24:30,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:24:30,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:24:30,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:24:30,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:24:30,226 INFO L87 Difference]: Start difference. First operand 31764 states and 35343 transitions. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:30,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:24:30,833 INFO L93 Difference]: Finished difference Result 56806 states and 63148 transitions. [2022-07-22 11:24:30,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:24:30,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 266 [2022-07-22 11:24:30,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:24:30,869 INFO L225 Difference]: With dead ends: 56806 [2022-07-22 11:24:30,869 INFO L226 Difference]: Without dead ends: 25452 [2022-07-22 11:24:30,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:24:30,892 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 209 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 11:24:30,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 297 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 11:24:30,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25452 states. [2022-07-22 11:24:31,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25452 to 23418. [2022-07-22 11:24:31,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23418 states, 23417 states have (on average 1.0791732502028442) internal successors, (25271), 23417 states have internal predecessors, (25271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:31,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23418 states to 23418 states and 25271 transitions. [2022-07-22 11:24:31,384 INFO L78 Accepts]: Start accepts. Automaton has 23418 states and 25271 transitions. Word has length 266 [2022-07-22 11:24:31,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:24:31,384 INFO L495 AbstractCegarLoop]: Abstraction has 23418 states and 25271 transitions. [2022-07-22 11:24:31,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:31,385 INFO L276 IsEmpty]: Start isEmpty. Operand 23418 states and 25271 transitions. [2022-07-22 11:24:31,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-07-22 11:24:31,398 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:24:31,398 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:24:31,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 11:24:31,399 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:24:31,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:24:31,399 INFO L85 PathProgramCache]: Analyzing trace with hash -535994125, now seen corresponding path program 1 times [2022-07-22 11:24:31,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:24:31,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401275787] [2022-07-22 11:24:31,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:31,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:24:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:31,525 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:24:31,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:24:31,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401275787] [2022-07-22 11:24:31,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401275787] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:24:31,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:24:31,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:24:31,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228070845] [2022-07-22 11:24:31,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:24:31,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:24:31,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:24:31,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:24:31,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:24:31,529 INFO L87 Difference]: Start difference. First operand 23418 states and 25271 transitions. Second operand has 4 states, 4 states have (on average 66.5) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:32,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:24:32,590 INFO L93 Difference]: Finished difference Result 42784 states and 46278 transitions. [2022-07-22 11:24:32,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:24:32,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 66.5) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 266 [2022-07-22 11:24:32,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:24:32,620 INFO L225 Difference]: With dead ends: 42784 [2022-07-22 11:24:32,620 INFO L226 Difference]: Without dead ends: 24458 [2022-07-22 11:24:32,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:24:32,637 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 351 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 11:24:32,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 92 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 11:24:32,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24458 states. [2022-07-22 11:24:32,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24458 to 24032. [2022-07-22 11:24:32,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24032 states, 24031 states have (on average 1.0786484124672298) internal successors, (25921), 24031 states have internal predecessors, (25921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:33,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24032 states to 24032 states and 25921 transitions. [2022-07-22 11:24:33,036 INFO L78 Accepts]: Start accepts. Automaton has 24032 states and 25921 transitions. Word has length 266 [2022-07-22 11:24:33,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:24:33,037 INFO L495 AbstractCegarLoop]: Abstraction has 24032 states and 25921 transitions. [2022-07-22 11:24:33,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.5) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:33,037 INFO L276 IsEmpty]: Start isEmpty. Operand 24032 states and 25921 transitions. [2022-07-22 11:24:33,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-07-22 11:24:33,053 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:24:33,053 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:24:33,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 11:24:33,053 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:24:33,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:24:33,054 INFO L85 PathProgramCache]: Analyzing trace with hash 578581440, now seen corresponding path program 1 times [2022-07-22 11:24:33,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:24:33,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601998722] [2022-07-22 11:24:33,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:33,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:24:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:33,177 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 11:24:33,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:24:33,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601998722] [2022-07-22 11:24:33,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601998722] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:24:33,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:24:33,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:24:33,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369986898] [2022-07-22 11:24:33,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:24:33,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:24:33,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:24:33,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:24:33,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:24:33,180 INFO L87 Difference]: Start difference. First operand 24032 states and 25921 transitions. Second operand has 4 states, 4 states have (on average 62.5) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:33,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:24:33,984 INFO L93 Difference]: Finished difference Result 42587 states and 46048 transitions. [2022-07-22 11:24:33,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:24:33,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.5) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 279 [2022-07-22 11:24:33,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:24:34,010 INFO L225 Difference]: With dead ends: 42587 [2022-07-22 11:24:34,010 INFO L226 Difference]: Without dead ends: 23850 [2022-07-22 11:24:34,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:24:34,024 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 368 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 11:24:34,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 98 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 11:24:34,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23850 states. [2022-07-22 11:24:34,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23850 to 23626. [2022-07-22 11:24:34,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23626 states, 23625 states have (on average 1.0783915343915345) internal successors, (25477), 23625 states have internal predecessors, (25477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:34,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23626 states to 23626 states and 25477 transitions. [2022-07-22 11:24:34,327 INFO L78 Accepts]: Start accepts. Automaton has 23626 states and 25477 transitions. Word has length 279 [2022-07-22 11:24:34,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:24:34,327 INFO L495 AbstractCegarLoop]: Abstraction has 23626 states and 25477 transitions. [2022-07-22 11:24:34,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.5) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:34,327 INFO L276 IsEmpty]: Start isEmpty. Operand 23626 states and 25477 transitions. [2022-07-22 11:24:34,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-07-22 11:24:34,340 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:24:34,340 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:24:34,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 11:24:34,340 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:24:34,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:24:34,341 INFO L85 PathProgramCache]: Analyzing trace with hash -218596171, now seen corresponding path program 1 times [2022-07-22 11:24:34,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:24:34,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140487490] [2022-07-22 11:24:34,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:34,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:24:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:34,434 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 110 proven. 6 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-07-22 11:24:34,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:24:34,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140487490] [2022-07-22 11:24:34,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140487490] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 11:24:34,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252148939] [2022-07-22 11:24:34,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:34,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:24:34,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:24:34,438 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) [2022-07-22 11:24:34,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 11:24:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:34,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 11:24:34,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:24:34,922 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-22 11:24:34,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 11:24:34,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252148939] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:24:34,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 11:24:34,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-22 11:24:34,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364030231] [2022-07-22 11:24:34,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:24:34,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:24:34,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:24:34,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:24:34,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:24:34,924 INFO L87 Difference]: Start difference. First operand 23626 states and 25477 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:35,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:24:35,626 INFO L93 Difference]: Finished difference Result 48270 states and 52355 transitions. [2022-07-22 11:24:35,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:24:35,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 286 [2022-07-22 11:24:35,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:24:35,657 INFO L225 Difference]: With dead ends: 48270 [2022-07-22 11:24:35,657 INFO L226 Difference]: Without dead ends: 30142 [2022-07-22 11:24:35,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:24:35,664 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 66 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 11:24:35,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 100 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 11:24:35,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30142 states. [2022-07-22 11:24:35,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30142 to 26267. [2022-07-22 11:24:35,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26267 states, 26266 states have (on average 1.0827305261554863) internal successors, (28439), 26266 states have internal predecessors, (28439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:35,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26267 states to 26267 states and 28439 transitions. [2022-07-22 11:24:35,928 INFO L78 Accepts]: Start accepts. Automaton has 26267 states and 28439 transitions. Word has length 286 [2022-07-22 11:24:35,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:24:35,928 INFO L495 AbstractCegarLoop]: Abstraction has 26267 states and 28439 transitions. [2022-07-22 11:24:35,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:35,929 INFO L276 IsEmpty]: Start isEmpty. Operand 26267 states and 28439 transitions. [2022-07-22 11:24:35,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2022-07-22 11:24:35,941 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:24:35,941 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:24:35,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 11:24:36,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-22 11:24:36,142 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:24:36,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:24:36,143 INFO L85 PathProgramCache]: Analyzing trace with hash 828076308, now seen corresponding path program 1 times [2022-07-22 11:24:36,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:24:36,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982436526] [2022-07-22 11:24:36,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:36,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:24:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:36,321 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:24:36,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:24:36,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982436526] [2022-07-22 11:24:36,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982436526] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:24:36,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:24:36,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 11:24:36,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981254732] [2022-07-22 11:24:36,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:24:36,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:24:36,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:24:36,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:24:36,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:24:36,324 INFO L87 Difference]: Start difference. First operand 26267 states and 28439 transitions. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 2 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:36,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:24:36,954 INFO L93 Difference]: Finished difference Result 55795 states and 60387 transitions. [2022-07-22 11:24:36,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:24:36,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 2 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 303 [2022-07-22 11:24:36,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:24:36,989 INFO L225 Difference]: With dead ends: 55795 [2022-07-22 11:24:36,989 INFO L226 Difference]: Without dead ends: 30549 [2022-07-22 11:24:37,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:24:37,009 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 90 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 11:24:37,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 117 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 11:24:37,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30549 states. [2022-07-22 11:24:37,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30549 to 28715. [2022-07-22 11:24:37,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28715 states, 28714 states have (on average 1.0811450860207563) internal successors, (31044), 28714 states have internal predecessors, (31044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:37,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28715 states to 28715 states and 31044 transitions. [2022-07-22 11:24:37,342 INFO L78 Accepts]: Start accepts. Automaton has 28715 states and 31044 transitions. Word has length 303 [2022-07-22 11:24:37,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:24:37,342 INFO L495 AbstractCegarLoop]: Abstraction has 28715 states and 31044 transitions. [2022-07-22 11:24:37,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 2 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:37,343 INFO L276 IsEmpty]: Start isEmpty. Operand 28715 states and 31044 transitions. [2022-07-22 11:24:37,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-07-22 11:24:37,357 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:24:37,357 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:24:37,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 11:24:37,357 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:24:37,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:24:37,358 INFO L85 PathProgramCache]: Analyzing trace with hash -143497758, now seen corresponding path program 1 times [2022-07-22 11:24:37,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:24:37,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350190483] [2022-07-22 11:24:37,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:37,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:24:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:37,522 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 140 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:24:37,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:24:37,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350190483] [2022-07-22 11:24:37,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350190483] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 11:24:37,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953967935] [2022-07-22 11:24:37,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:37,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:24:37,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:24:37,528 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) [2022-07-22 11:24:37,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 11:24:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:37,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 11:24:37,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:24:37,859 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-22 11:24:37,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 11:24:37,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953967935] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:24:37,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 11:24:37,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-07-22 11:24:37,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613403256] [2022-07-22 11:24:37,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:24:37,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:24:37,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:24:37,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:24:37,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:24:37,862 INFO L87 Difference]: Start difference. First operand 28715 states and 31044 transitions. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 2 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:38,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:24:38,180 INFO L93 Difference]: Finished difference Result 60282 states and 65051 transitions. [2022-07-22 11:24:38,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:24:38,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 2 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 305 [2022-07-22 11:24:38,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:24:38,222 INFO L225 Difference]: With dead ends: 60282 [2022-07-22 11:24:38,222 INFO L226 Difference]: Without dead ends: 39716 [2022-07-22 11:24:38,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:24:38,241 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 199 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 11:24:38,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 476 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 11:24:38,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39716 states. [2022-07-22 11:24:38,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39716 to 39511. [2022-07-22 11:24:38,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39511 states, 39510 states have (on average 1.073930650468236) internal successors, (42431), 39510 states have internal predecessors, (42431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:38,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39511 states to 39511 states and 42431 transitions. [2022-07-22 11:24:38,731 INFO L78 Accepts]: Start accepts. Automaton has 39511 states and 42431 transitions. Word has length 305 [2022-07-22 11:24:38,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:24:38,732 INFO L495 AbstractCegarLoop]: Abstraction has 39511 states and 42431 transitions. [2022-07-22 11:24:38,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 2 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:38,732 INFO L276 IsEmpty]: Start isEmpty. Operand 39511 states and 42431 transitions. [2022-07-22 11:24:38,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-07-22 11:24:38,754 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:24:38,755 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:24:38,785 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-22 11:24:38,982 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,SelfDestructingSolverStorable17 [2022-07-22 11:24:38,982 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:24:38,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:24:38,983 INFO L85 PathProgramCache]: Analyzing trace with hash 999634032, now seen corresponding path program 1 times [2022-07-22 11:24:38,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:24:38,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218839549] [2022-07-22 11:24:38,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:38,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:24:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:39,112 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 145 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-22 11:24:39,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:24:39,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218839549] [2022-07-22 11:24:39,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218839549] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 11:24:39,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789852130] [2022-07-22 11:24:39,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:39,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:24:39,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:24:39,115 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) [2022-07-22 11:24:39,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 11:24:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:39,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 11:24:39,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:24:39,448 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 11:24:39,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 11:24:39,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789852130] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:24:39,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 11:24:39,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-07-22 11:24:39,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128901115] [2022-07-22 11:24:39,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:24:39,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:24:39,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:24:39,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:24:39,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:24:39,452 INFO L87 Difference]: Start difference. First operand 39511 states and 42431 transitions. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 2 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:40,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:24:40,345 INFO L93 Difference]: Finished difference Result 88979 states and 95466 transitions. [2022-07-22 11:24:40,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:24:40,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 2 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 306 [2022-07-22 11:24:40,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:24:40,407 INFO L225 Difference]: With dead ends: 88979 [2022-07-22 11:24:40,407 INFO L226 Difference]: Without dead ends: 49281 [2022-07-22 11:24:40,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:24:40,435 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 118 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 11:24:40,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 114 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 11:24:40,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49281 states. [2022-07-22 11:24:40,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49281 to 45824. [2022-07-22 11:24:40,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45824 states, 45823 states have (on average 1.0710341968007333) internal successors, (49078), 45823 states have internal predecessors, (49078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:41,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45824 states to 45824 states and 49078 transitions. [2022-07-22 11:24:41,027 INFO L78 Accepts]: Start accepts. Automaton has 45824 states and 49078 transitions. Word has length 306 [2022-07-22 11:24:41,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:24:41,028 INFO L495 AbstractCegarLoop]: Abstraction has 45824 states and 49078 transitions. [2022-07-22 11:24:41,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 2 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:41,028 INFO L276 IsEmpty]: Start isEmpty. Operand 45824 states and 49078 transitions. [2022-07-22 11:24:41,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2022-07-22 11:24:41,047 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:24:41,048 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:24:41,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-22 11:24:41,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:24:41,249 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:24:41,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:24:41,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1730054344, now seen corresponding path program 1 times [2022-07-22 11:24:41,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:24:41,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995651932] [2022-07-22 11:24:41,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:41,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:24:41,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:41,439 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-07-22 11:24:41,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:24:41,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995651932] [2022-07-22 11:24:41,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995651932] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 11:24:41,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721823466] [2022-07-22 11:24:41,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:41,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:24:41,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:24:41,442 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) [2022-07-22 11:24:41,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 11:24:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:41,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 11:24:41,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:24:41,931 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-07-22 11:24:41,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 11:24:41,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721823466] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:24:41,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 11:24:41,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-22 11:24:41,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820870638] [2022-07-22 11:24:41,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:24:41,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:24:41,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:24:41,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:24:41,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:24:41,935 INFO L87 Difference]: Start difference. First operand 45824 states and 49078 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:42,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:24:42,611 INFO L93 Difference]: Finished difference Result 89647 states and 96087 transitions. [2022-07-22 11:24:42,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:24:42,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 311 [2022-07-22 11:24:42,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:24:42,659 INFO L225 Difference]: With dead ends: 89647 [2022-07-22 11:24:42,659 INFO L226 Difference]: Without dead ends: 44028 [2022-07-22 11:24:42,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:24:42,688 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 60 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 11:24:42,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 305 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 11:24:42,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44028 states. [2022-07-22 11:24:43,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44028 to 43997. [2022-07-22 11:24:43,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43997 states, 43996 states have (on average 1.0684607691608328) internal successors, (47008), 43996 states have internal predecessors, (47008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:43,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43997 states to 43997 states and 47008 transitions. [2022-07-22 11:24:43,204 INFO L78 Accepts]: Start accepts. Automaton has 43997 states and 47008 transitions. Word has length 311 [2022-07-22 11:24:43,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:24:43,205 INFO L495 AbstractCegarLoop]: Abstraction has 43997 states and 47008 transitions. [2022-07-22 11:24:43,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:43,205 INFO L276 IsEmpty]: Start isEmpty. Operand 43997 states and 47008 transitions. [2022-07-22 11:24:43,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-07-22 11:24:43,220 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:24:43,221 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:24:43,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-22 11:24:43,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:24:43,421 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:24:43,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:24:43,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1058437167, now seen corresponding path program 1 times [2022-07-22 11:24:43,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:24:43,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135740377] [2022-07-22 11:24:43,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:43,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:24:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:43,537 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 145 proven. 6 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2022-07-22 11:24:43,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:24:43,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135740377] [2022-07-22 11:24:43,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135740377] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 11:24:43,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787444744] [2022-07-22 11:24:43,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:43,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:24:43,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:24:43,539 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) [2022-07-22 11:24:43,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 11:24:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:43,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 11:24:43,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:24:43,909 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 317 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-22 11:24:43,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 11:24:43,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787444744] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:24:43,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 11:24:43,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 6 [2022-07-22 11:24:43,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521252970] [2022-07-22 11:24:43,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:24:43,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:24:43,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:24:43,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:24:43,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 11:24:43,912 INFO L87 Difference]: Start difference. First operand 43997 states and 47008 transitions. Second operand has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:44,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:24:44,971 INFO L93 Difference]: Finished difference Result 112013 states and 119880 transitions. [2022-07-22 11:24:44,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:24:44,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 318 [2022-07-22 11:24:44,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:24:45,056 INFO L225 Difference]: With dead ends: 112013 [2022-07-22 11:24:45,057 INFO L226 Difference]: Without dead ends: 70671 [2022-07-22 11:24:45,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 11:24:45,089 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 625 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:24:45,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 276 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 11:24:45,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70671 states. [2022-07-22 11:24:45,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70671 to 65571. [2022-07-22 11:24:45,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65571 states, 65570 states have (on average 1.0650144883330792) internal successors, (69833), 65570 states have internal predecessors, (69833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:45,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65571 states to 65571 states and 69833 transitions. [2022-07-22 11:24:45,804 INFO L78 Accepts]: Start accepts. Automaton has 65571 states and 69833 transitions. Word has length 318 [2022-07-22 11:24:45,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:24:45,804 INFO L495 AbstractCegarLoop]: Abstraction has 65571 states and 69833 transitions. [2022-07-22 11:24:45,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:45,804 INFO L276 IsEmpty]: Start isEmpty. Operand 65571 states and 69833 transitions. [2022-07-22 11:24:45,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-07-22 11:24:45,820 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:24:45,820 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:24:45,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 11:24:46,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:24:46,021 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:24:46,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:24:46,022 INFO L85 PathProgramCache]: Analyzing trace with hash -770291772, now seen corresponding path program 1 times [2022-07-22 11:24:46,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:24:46,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976065856] [2022-07-22 11:24:46,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:46,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:24:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:46,118 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 111 proven. 6 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2022-07-22 11:24:46,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:24:46,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976065856] [2022-07-22 11:24:46,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976065856] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 11:24:46,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377664587] [2022-07-22 11:24:46,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:46,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:24:46,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:24:46,121 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 11:24:46,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 11:24:46,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:46,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 11:24:46,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:24:46,491 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-07-22 11:24:46,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 11:24:46,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377664587] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:24:46,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 11:24:46,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-22 11:24:46,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081993088] [2022-07-22 11:24:46,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:24:46,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:24:46,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:24:46,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:24:46,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:24:46,494 INFO L87 Difference]: Start difference. First operand 65571 states and 69833 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:47,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:24:47,271 INFO L93 Difference]: Finished difference Result 124629 states and 132846 transitions. [2022-07-22 11:24:47,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:24:47,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 329 [2022-07-22 11:24:47,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:24:47,354 INFO L225 Difference]: With dead ends: 124629 [2022-07-22 11:24:47,354 INFO L226 Difference]: Without dead ends: 63339 [2022-07-22 11:24:47,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:24:47,392 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 100 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 11:24:47,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 272 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 11:24:47,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63339 states. [2022-07-22 11:24:48,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63339 to 61298. [2022-07-22 11:24:48,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61298 states, 61297 states have (on average 1.0617974778537285) internal successors, (65085), 61297 states have internal predecessors, (65085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:48,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61298 states to 61298 states and 65085 transitions. [2022-07-22 11:24:48,124 INFO L78 Accepts]: Start accepts. Automaton has 61298 states and 65085 transitions. Word has length 329 [2022-07-22 11:24:48,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:24:48,125 INFO L495 AbstractCegarLoop]: Abstraction has 61298 states and 65085 transitions. [2022-07-22 11:24:48,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:48,125 INFO L276 IsEmpty]: Start isEmpty. Operand 61298 states and 65085 transitions. [2022-07-22 11:24:48,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2022-07-22 11:24:48,150 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:24:48,150 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:24:48,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-22 11:24:48,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:24:48,352 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:24:48,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:24:48,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1101627577, now seen corresponding path program 1 times [2022-07-22 11:24:48,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:24:48,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205583268] [2022-07-22 11:24:48,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:48,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:24:48,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:48,523 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 322 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-22 11:24:48,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:24:48,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205583268] [2022-07-22 11:24:48,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205583268] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:24:48,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:24:48,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:24:48,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003088828] [2022-07-22 11:24:48,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:24:48,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:24:48,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:24:48,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:24:48,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:24:48,526 INFO L87 Difference]: Start difference. First operand 61298 states and 65085 transitions. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:49,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:24:49,342 INFO L93 Difference]: Finished difference Result 119723 states and 127223 transitions. [2022-07-22 11:24:49,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:24:49,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 379 [2022-07-22 11:24:49,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:24:49,423 INFO L225 Difference]: With dead ends: 119723 [2022-07-22 11:24:49,423 INFO L226 Difference]: Without dead ends: 62706 [2022-07-22 11:24:49,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:24:49,461 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 157 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 11:24:49,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 326 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 11:24:49,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62706 states. [2022-07-22 11:24:50,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62706 to 55387. [2022-07-22 11:24:50,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55387 states, 55386 states have (on average 1.0593651825371033) internal successors, (58674), 55386 states have internal predecessors, (58674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:50,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55387 states to 55387 states and 58674 transitions. [2022-07-22 11:24:50,286 INFO L78 Accepts]: Start accepts. Automaton has 55387 states and 58674 transitions. Word has length 379 [2022-07-22 11:24:50,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:24:50,286 INFO L495 AbstractCegarLoop]: Abstraction has 55387 states and 58674 transitions. [2022-07-22 11:24:50,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:50,286 INFO L276 IsEmpty]: Start isEmpty. Operand 55387 states and 58674 transitions. [2022-07-22 11:24:50,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2022-07-22 11:24:50,306 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:24:50,306 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:24:50,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 11:24:50,307 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:24:50,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:24:50,307 INFO L85 PathProgramCache]: Analyzing trace with hash -2109960398, now seen corresponding path program 1 times [2022-07-22 11:24:50,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:24:50,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726887882] [2022-07-22 11:24:50,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:50,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:24:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:50,439 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 111 proven. 6 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2022-07-22 11:24:50,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:24:50,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726887882] [2022-07-22 11:24:50,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726887882] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 11:24:50,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054491318] [2022-07-22 11:24:50,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:50,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:24:50,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:24:50,444 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 11:24:50,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 11:24:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:50,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 11:24:50,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:24:50,848 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 304 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-22 11:24:50,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 11:24:50,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054491318] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:24:50,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 11:24:50,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-22 11:24:50,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300426467] [2022-07-22 11:24:50,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:24:50,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:24:50,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:24:50,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:24:50,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:24:50,851 INFO L87 Difference]: Start difference. First operand 55387 states and 58674 transitions. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:51,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:24:51,563 INFO L93 Difference]: Finished difference Result 101605 states and 107611 transitions. [2022-07-22 11:24:51,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:24:51,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 395 [2022-07-22 11:24:51,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:24:51,618 INFO L225 Difference]: With dead ends: 101605 [2022-07-22 11:24:51,618 INFO L226 Difference]: Without dead ends: 47854 [2022-07-22 11:24:51,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:24:51,651 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 98 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 11:24:51,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 298 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 11:24:51,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47854 states. [2022-07-22 11:24:52,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47854 to 44188. [2022-07-22 11:24:52,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44188 states, 44187 states have (on average 1.0489736800416412) internal successors, (46351), 44187 states have internal predecessors, (46351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:52,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44188 states to 44188 states and 46351 transitions. [2022-07-22 11:24:52,878 INFO L78 Accepts]: Start accepts. Automaton has 44188 states and 46351 transitions. Word has length 395 [2022-07-22 11:24:52,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:24:52,878 INFO L495 AbstractCegarLoop]: Abstraction has 44188 states and 46351 transitions. [2022-07-22 11:24:52,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:52,879 INFO L276 IsEmpty]: Start isEmpty. Operand 44188 states and 46351 transitions. [2022-07-22 11:24:52,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2022-07-22 11:24:52,894 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:24:52,895 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:24:52,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 11:24:53,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:24:53,096 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:24:53,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:24:53,097 INFO L85 PathProgramCache]: Analyzing trace with hash -371545696, now seen corresponding path program 1 times [2022-07-22 11:24:53,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:24:53,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652803606] [2022-07-22 11:24:53,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:53,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:24:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:53,714 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 248 proven. 6 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-22 11:24:53,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:24:53,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652803606] [2022-07-22 11:24:53,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652803606] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 11:24:53,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836134984] [2022-07-22 11:24:53,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:53,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:24:53,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:24:53,717 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 11:24:53,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 11:24:53,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:53,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 11:24:53,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:24:54,013 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-07-22 11:24:54,013 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 11:24:54,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836134984] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:24:54,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 11:24:54,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-07-22 11:24:54,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771615833] [2022-07-22 11:24:54,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:24:54,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:24:54,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:24:54,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:24:54,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:24:54,016 INFO L87 Difference]: Start difference. First operand 44188 states and 46351 transitions. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 2 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:54,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:24:54,517 INFO L93 Difference]: Finished difference Result 120337 states and 126443 transitions. [2022-07-22 11:24:54,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:24:54,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 2 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 398 [2022-07-22 11:24:54,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:24:54,614 INFO L225 Difference]: With dead ends: 120337 [2022-07-22 11:24:54,615 INFO L226 Difference]: Without dead ends: 77574 [2022-07-22 11:24:54,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:24:54,655 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 173 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:24:54,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 468 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 11:24:54,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77574 states. [2022-07-22 11:24:55,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77574 to 77566. [2022-07-22 11:24:55,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77566 states, 77565 states have (on average 1.0511442016373365) internal successors, (81532), 77565 states have internal predecessors, (81532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:55,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77566 states to 77566 states and 81532 transitions. [2022-07-22 11:24:55,830 INFO L78 Accepts]: Start accepts. Automaton has 77566 states and 81532 transitions. Word has length 398 [2022-07-22 11:24:55,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:24:55,830 INFO L495 AbstractCegarLoop]: Abstraction has 77566 states and 81532 transitions. [2022-07-22 11:24:55,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 2 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:55,830 INFO L276 IsEmpty]: Start isEmpty. Operand 77566 states and 81532 transitions. [2022-07-22 11:24:55,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2022-07-22 11:24:55,848 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:24:55,848 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:24:55,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 11:24:56,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-07-22 11:24:56,050 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:24:56,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:24:56,051 INFO L85 PathProgramCache]: Analyzing trace with hash -677068812, now seen corresponding path program 1 times [2022-07-22 11:24:56,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:24:56,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663260851] [2022-07-22 11:24:56,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:56,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:24:56,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:56,215 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 287 proven. 9 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-22 11:24:56,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:24:56,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663260851] [2022-07-22 11:24:56,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663260851] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 11:24:56,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792696615] [2022-07-22 11:24:56,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:56,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:24:56,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:24:56,218 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 11:24:56,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 11:24:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:56,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 11:24:56,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:24:56,451 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-07-22 11:24:56,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 11:24:56,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792696615] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:24:56,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 11:24:56,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-07-22 11:24:56,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711018252] [2022-07-22 11:24:56,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:24:56,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:24:56,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:24:56,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:24:56,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 11:24:56,454 INFO L87 Difference]: Start difference. First operand 77566 states and 81532 transitions. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:57,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:24:57,383 INFO L93 Difference]: Finished difference Result 153733 states and 161553 transitions. [2022-07-22 11:24:57,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:24:57,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 421 [2022-07-22 11:24:57,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:24:57,469 INFO L225 Difference]: With dead ends: 153733 [2022-07-22 11:24:57,470 INFO L226 Difference]: Without dead ends: 77590 [2022-07-22 11:24:57,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 11:24:57,513 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 210 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 11:24:57,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 328 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 11:24:57,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77590 states. [2022-07-22 11:24:58,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77590 to 74716. [2022-07-22 11:24:58,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74716 states, 74715 states have (on average 1.046724218697718) internal successors, (78206), 74715 states have internal predecessors, (78206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:58,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74716 states to 74716 states and 78206 transitions. [2022-07-22 11:24:58,595 INFO L78 Accepts]: Start accepts. Automaton has 74716 states and 78206 transitions. Word has length 421 [2022-07-22 11:24:58,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:24:58,595 INFO L495 AbstractCegarLoop]: Abstraction has 74716 states and 78206 transitions. [2022-07-22 11:24:58,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:58,596 INFO L276 IsEmpty]: Start isEmpty. Operand 74716 states and 78206 transitions. [2022-07-22 11:24:58,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2022-07-22 11:24:58,615 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:24:58,615 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:24:58,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-22 11:24:58,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-22 11:24:58,816 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:24:58,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:24:58,817 INFO L85 PathProgramCache]: Analyzing trace with hash 734319830, now seen corresponding path program 1 times [2022-07-22 11:24:58,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:24:58,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740042518] [2022-07-22 11:24:58,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:58,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:24:58,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:58,929 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 148 proven. 6 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-22 11:24:58,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:24:58,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740042518] [2022-07-22 11:24:58,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740042518] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 11:24:58,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472352427] [2022-07-22 11:24:58,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:24:58,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:24:58,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:24:58,931 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 11:24:58,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 11:24:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:24:59,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 11:24:59,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:24:59,146 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 411 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-07-22 11:24:59,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 11:24:59,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472352427] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:24:59,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 11:24:59,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-22 11:24:59,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976104334] [2022-07-22 11:24:59,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:24:59,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:24:59,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:24:59,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:24:59,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:24:59,149 INFO L87 Difference]: Start difference. First operand 74716 states and 78206 transitions. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:24:59,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:24:59,984 INFO L93 Difference]: Finished difference Result 182426 states and 190905 transitions. [2022-07-22 11:24:59,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:24:59,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 436 [2022-07-22 11:24:59,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:25:00,129 INFO L225 Difference]: With dead ends: 182426 [2022-07-22 11:25:00,129 INFO L226 Difference]: Without dead ends: 109133 [2022-07-22 11:25:00,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:25:00,186 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 230 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 11:25:00,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 709 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 11:25:00,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109133 states. [2022-07-22 11:25:01,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109133 to 104858. [2022-07-22 11:25:01,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104858 states, 104857 states have (on average 1.043430576880895) internal successors, (109411), 104857 states have internal predecessors, (109411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:25:01,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104858 states to 104858 states and 109411 transitions. [2022-07-22 11:25:01,986 INFO L78 Accepts]: Start accepts. Automaton has 104858 states and 109411 transitions. Word has length 436 [2022-07-22 11:25:01,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:25:01,986 INFO L495 AbstractCegarLoop]: Abstraction has 104858 states and 109411 transitions. [2022-07-22 11:25:01,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:25:01,986 INFO L276 IsEmpty]: Start isEmpty. Operand 104858 states and 109411 transitions. [2022-07-22 11:25:02,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2022-07-22 11:25:02,016 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:25:02,016 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:25:02,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-22 11:25:02,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-22 11:25:02,217 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:25:02,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:25:02,217 INFO L85 PathProgramCache]: Analyzing trace with hash 2142653386, now seen corresponding path program 1 times [2022-07-22 11:25:02,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:25:02,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565878922] [2022-07-22 11:25:02,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:25:02,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:25:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:25:02,336 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 185 proven. 6 refuted. 0 times theorem prover too weak. 520 trivial. 0 not checked. [2022-07-22 11:25:02,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:25:02,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565878922] [2022-07-22 11:25:02,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565878922] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 11:25:02,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047349559] [2022-07-22 11:25:02,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:25:02,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:25:02,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:25:02,339 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 11:25:02,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 11:25:02,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:25:02,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 11:25:02,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:25:02,823 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 283 proven. 189 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-07-22 11:25:02,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 11:25:03,145 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 283 proven. 189 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-07-22 11:25:03,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047349559] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 11:25:03,146 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 11:25:03,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-07-22 11:25:03,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400078192] [2022-07-22 11:25:03,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 11:25:03,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 11:25:03,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:25:03,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 11:25:03,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 11:25:03,148 INFO L87 Difference]: Start difference. First operand 104858 states and 109411 transitions. Second operand has 6 states, 6 states have (on average 61.666666666666664) internal successors, (370), 5 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:25:06,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:25:06,836 INFO L93 Difference]: Finished difference Result 352358 states and 368141 transitions. [2022-07-22 11:25:06,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 11:25:06,838 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 61.666666666666664) internal successors, (370), 5 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 448 [2022-07-22 11:25:06,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:25:07,212 INFO L225 Difference]: With dead ends: 352358 [2022-07-22 11:25:07,212 INFO L226 Difference]: Without dead ends: 242003 [2022-07-22 11:25:07,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 904 GetRequests, 893 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-07-22 11:25:07,274 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 2294 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 3432 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2294 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 3779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 3432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 11:25:07,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2294 Valid, 365 Invalid, 3779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 3432 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 11:25:07,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242003 states. [2022-07-22 11:25:10,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242003 to 228315. [2022-07-22 11:25:10,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228315 states, 228314 states have (on average 1.0437861891955815) internal successors, (238311), 228314 states have internal predecessors, (238311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:25:10,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228315 states to 228315 states and 238311 transitions. [2022-07-22 11:25:10,813 INFO L78 Accepts]: Start accepts. Automaton has 228315 states and 238311 transitions. Word has length 448 [2022-07-22 11:25:10,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:25:10,813 INFO L495 AbstractCegarLoop]: Abstraction has 228315 states and 238311 transitions. [2022-07-22 11:25:10,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.666666666666664) internal successors, (370), 5 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:25:10,813 INFO L276 IsEmpty]: Start isEmpty. Operand 228315 states and 238311 transitions. [2022-07-22 11:25:10,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2022-07-22 11:25:10,838 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:25:10,838 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:25:10,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-07-22 11:25:11,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-22 11:25:11,039 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:25:11,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:25:11,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1872116143, now seen corresponding path program 1 times [2022-07-22 11:25:11,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:25:11,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476257055] [2022-07-22 11:25:11,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:25:11,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:25:11,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:25:11,304 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 498 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:25:11,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:25:11,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476257055] [2022-07-22 11:25:11,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476257055] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 11:25:11,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572385154] [2022-07-22 11:25:11,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:25:11,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:25:11,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:25:11,306 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 11:25:11,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-22 11:25:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:25:11,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 749 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 11:25:11,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:25:12,792 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 510 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 11:25:12,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 11:25:12,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572385154] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:25:12,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 11:25:12,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-07-22 11:25:12,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564606121] [2022-07-22 11:25:12,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:25:12,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 11:25:12,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:25:12,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 11:25:12,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-07-22 11:25:12,795 INFO L87 Difference]: Start difference. First operand 228315 states and 238311 transitions. Second operand has 5 states, 5 states have (on average 93.0) internal successors, (465), 4 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:25:15,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:25:15,512 INFO L93 Difference]: Finished difference Result 542551 states and 566585 transitions. [2022-07-22 11:25:15,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 11:25:15,513 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 93.0) internal successors, (465), 4 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 470 [2022-07-22 11:25:15,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:25:16,012 INFO L225 Difference]: With dead ends: 542551 [2022-07-22 11:25:16,012 INFO L226 Difference]: Without dead ends: 315050 [2022-07-22 11:25:16,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-07-22 11:25:16,100 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 657 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:25:16,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 327 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 11:25:16,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315050 states. [2022-07-22 11:25:19,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315050 to 285330. [2022-07-22 11:25:20,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285330 states, 285329 states have (on average 1.0463920596924954) internal successors, (298566), 285329 states have internal predecessors, (298566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:25:20,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285330 states to 285330 states and 298566 transitions. [2022-07-22 11:25:20,542 INFO L78 Accepts]: Start accepts. Automaton has 285330 states and 298566 transitions. Word has length 470 [2022-07-22 11:25:20,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:25:20,543 INFO L495 AbstractCegarLoop]: Abstraction has 285330 states and 298566 transitions. [2022-07-22 11:25:20,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.0) internal successors, (465), 4 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:25:20,543 INFO L276 IsEmpty]: Start isEmpty. Operand 285330 states and 298566 transitions. [2022-07-22 11:25:20,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2022-07-22 11:25:20,573 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:25:20,573 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:25:20,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-22 11:25:20,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-22 11:25:20,774 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:25:20,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:25:20,775 INFO L85 PathProgramCache]: Analyzing trace with hash -843407159, now seen corresponding path program 1 times [2022-07-22 11:25:20,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:25:20,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934294214] [2022-07-22 11:25:20,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:25:20,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:25:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:25:21,592 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 364 proven. 67 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2022-07-22 11:25:21,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:25:21,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934294214] [2022-07-22 11:25:21,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934294214] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 11:25:21,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741693112] [2022-07-22 11:25:21,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:25:21,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:25:21,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:25:21,595 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 11:25:21,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-22 11:25:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:25:21,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 11:25:21,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:25:22,827 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 182 proven. 307 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-07-22 11:25:22,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 11:25:23,951 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 182 proven. 307 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-07-22 11:25:23,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741693112] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 11:25:23,952 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 11:25:23,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2022-07-22 11:25:23,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876276428] [2022-07-22 11:25:23,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 11:25:23,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 11:25:23,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:25:23,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 11:25:23,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-22 11:25:23,954 INFO L87 Difference]: Start difference. First operand 285330 states and 298566 transitions. Second operand has 10 states, 10 states have (on average 76.4) internal successors, (764), 9 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)