./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product27.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF --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 1c4d0e54eab5e94cf1a4af64165a2546f1c45e063bd8600195a743522777000c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:33:10,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:33:10,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:33:10,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:33:10,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:33:10,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:33:10,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:33:10,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:33:10,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:33:10,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:33:10,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:33:10,316 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:33:10,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:33:10,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:33:10,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:33:10,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:33:10,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:33:10,333 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:33:10,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:33:10,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:33:10,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:33:10,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:33:10,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:33:10,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:33:10,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:33:10,364 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:33:10,364 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:33:10,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:33:10,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:33:10,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:33:10,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:33:10,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:33:10,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:33:10,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:33:10,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:33:10,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:33:10,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:33:10,376 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:33:10,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:33:10,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:33:10,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:33:10,379 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 05:33:10,407 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:33:10,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:33:10,407 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:33:10,408 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:33:10,408 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:33:10,409 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:33:10,409 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:33:10,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:33:10,410 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:33:10,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:33:10,410 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:33:10,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:33:10,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:33:10,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:33:10,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 05:33:10,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:33:10,412 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 05:33:10,412 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:33:10,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 05:33:10,412 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:33:10,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 05:33:10,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:33:10,413 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:33:10,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:33:10,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:33:10,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:33:10,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:33:10,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 05:33:10,414 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:33:10,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:33:10,415 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 05:33:10,415 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 05:33:10,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 05:33:10,415 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:33:10,416 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c4d0e54eab5e94cf1a4af64165a2546f1c45e063bd8600195a743522777000c [2021-11-20 05:33:10,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:33:10,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:33:10,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:33:10,746 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:33:10,747 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:33:10,749 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/product-lines/email_spec3_product27.cil.c [2021-11-20 05:33:10,821 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/data/543a71453/c8b74984c12441f4939375267f8b4027/FLAG487d4e10d [2021-11-20 05:33:11,471 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:33:11,471 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/sv-benchmarks/c/product-lines/email_spec3_product27.cil.c [2021-11-20 05:33:11,494 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/data/543a71453/c8b74984c12441f4939375267f8b4027/FLAG487d4e10d [2021-11-20 05:33:11,715 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/data/543a71453/c8b74984c12441f4939375267f8b4027 [2021-11-20 05:33:11,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:33:11,719 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:33:11,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:33:11,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:33:11,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:33:11,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:33:11" (1/1) ... [2021-11-20 05:33:11,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6156420c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:11, skipping insertion in model container [2021-11-20 05:33:11,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:33:11" (1/1) ... [2021-11-20 05:33:11,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:33:11,810 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:33:12,283 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/sv-benchmarks/c/product-lines/email_spec3_product27.cil.c[40661,40674] [2021-11-20 05:33:12,358 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:33:12,380 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:33:12,469 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/sv-benchmarks/c/product-lines/email_spec3_product27.cil.c[40661,40674] [2021-11-20 05:33:12,492 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:33:12,525 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:33:12,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:12 WrapperNode [2021-11-20 05:33:12,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:33:12,527 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:33:12,527 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:33:12,527 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:33:12,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:12" (1/1) ... [2021-11-20 05:33:12,568 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:12" (1/1) ... [2021-11-20 05:33:12,659 INFO L137 Inliner]: procedures = 134, calls = 237, calls flagged for inlining = 63, calls inlined = 60, statements flattened = 1100 [2021-11-20 05:33:12,659 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:33:12,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:33:12,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:33:12,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:33:12,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:12" (1/1) ... [2021-11-20 05:33:12,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:12" (1/1) ... [2021-11-20 05:33:12,689 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:12" (1/1) ... [2021-11-20 05:33:12,689 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:12" (1/1) ... [2021-11-20 05:33:12,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:12" (1/1) ... [2021-11-20 05:33:12,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:12" (1/1) ... [2021-11-20 05:33:12,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:12" (1/1) ... [2021-11-20 05:33:12,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:33:12,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:33:12,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:33:12,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:33:12,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:12" (1/1) ... [2021-11-20 05:33:12,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:33:12,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:33:12,820 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:33:12,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:33:12,858 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-20 05:33:12,858 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-20 05:33:12,858 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-20 05:33:12,858 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-20 05:33:12,858 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-20 05:33:12,858 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-20 05:33:12,859 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2021-11-20 05:33:12,859 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2021-11-20 05:33:12,859 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-20 05:33:12,860 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-20 05:33:12,860 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-20 05:33:12,860 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-20 05:33:12,860 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-20 05:33:12,860 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-20 05:33:12,860 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-20 05:33:12,860 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-20 05:33:12,865 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-20 05:33:12,865 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-20 05:33:12,865 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-20 05:33:12,865 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-20 05:33:12,866 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-20 05:33:12,866 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-11-20 05:33:12,866 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-11-20 05:33:12,866 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-20 05:33:12,866 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-20 05:33:12,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:33:12,866 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-20 05:33:12,867 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-20 05:33:12,867 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-20 05:33:12,867 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-20 05:33:12,867 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-20 05:33:12,867 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-20 05:33:12,867 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-20 05:33:12,867 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-20 05:33:12,868 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-11-20 05:33:12,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-11-20 05:33:12,868 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-20 05:33:12,868 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-20 05:33:12,868 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-20 05:33:12,869 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-20 05:33:12,869 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-20 05:33:12,869 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-20 05:33:12,869 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-20 05:33:12,869 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-20 05:33:12,869 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-20 05:33:12,870 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-20 05:33:12,870 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-20 05:33:12,870 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-20 05:33:12,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 05:33:12,870 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-20 05:33:12,870 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-20 05:33:12,870 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-20 05:33:12,871 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-20 05:33:12,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:33:12,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:33:13,214 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:33:13,217 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:33:14,084 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:33:14,108 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:33:14,108 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 05:33:14,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:33:14 BoogieIcfgContainer [2021-11-20 05:33:14,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:33:14,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:33:14,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:33:14,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:33:14,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:33:11" (1/3) ... [2021-11-20 05:33:14,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d58ded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:33:14, skipping insertion in model container [2021-11-20 05:33:14,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:33:12" (2/3) ... [2021-11-20 05:33:14,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d58ded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:33:14, skipping insertion in model container [2021-11-20 05:33:14,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:33:14" (3/3) ... [2021-11-20 05:33:14,124 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec3_product27.cil.c [2021-11-20 05:33:14,129 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:33:14,130 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 05:33:14,186 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:33:14,193 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 05:33:14,193 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 05:33:14,218 INFO L276 IsEmpty]: Start isEmpty. Operand has 420 states, 327 states have (on average 1.5535168195718654) internal successors, (508), 332 states have internal predecessors, (508), 66 states have call successors, (66), 25 states have call predecessors, (66), 25 states have return successors, (66), 64 states have call predecessors, (66), 66 states have call successors, (66) [2021-11-20 05:33:14,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-20 05:33:14,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:33:14,246 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-11-20 05:33:14,247 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:33:14,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:14,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1160694730, now seen corresponding path program 1 times [2021-11-20 05:33:14,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:14,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276217052] [2021-11-20 05:33:14,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:14,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:14,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:14,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:33:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:14,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:33:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:14,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:33:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:14,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-20 05:33:14,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:14,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 05:33:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:14,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 05:33:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:14,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-20 05:33:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:14,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-20 05:33:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:14,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 05:33:14,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:14,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-20 05:33:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:14,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-20 05:33:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:14,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-20 05:33:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:14,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-20 05:33:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:14,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-20 05:33:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:14,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-20 05:33:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:14,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-20 05:33:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:14,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-20 05:33:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:14,864 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 05:33:14,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:14,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276217052] [2021-11-20 05:33:14,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276217052] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:33:14,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202767625] [2021-11-20 05:33:14,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:14,871 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:33:14,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:33:14,881 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:33:14,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 05:33:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:15,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 1228 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-20 05:33:15,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:33:15,650 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-20 05:33:15,650 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:33:15,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202767625] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:15,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:33:15,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-11-20 05:33:15,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969875732] [2021-11-20 05:33:15,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:15,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 05:33:15,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:15,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 05:33:15,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:33:15,704 INFO L87 Difference]: Start difference. First operand has 420 states, 327 states have (on average 1.5535168195718654) internal successors, (508), 332 states have internal predecessors, (508), 66 states have call successors, (66), 25 states have call predecessors, (66), 25 states have return successors, (66), 64 states have call predecessors, (66), 66 states have call successors, (66) Second operand has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-20 05:33:15,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:33:15,803 INFO L93 Difference]: Finished difference Result 641 states and 962 transitions. [2021-11-20 05:33:15,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 05:33:15,805 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 131 [2021-11-20 05:33:15,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:33:15,838 INFO L225 Difference]: With dead ends: 641 [2021-11-20 05:33:15,838 INFO L226 Difference]: Without dead ends: 412 [2021-11-20 05:33:15,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:33:15,855 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:33:15,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:33:15,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-11-20 05:33:15,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2021-11-20 05:33:15,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 321 states have (on average 1.5482866043613708) internal successors, (497), 324 states have internal predecessors, (497), 66 states have call successors, (66), 25 states have call predecessors, (66), 24 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) [2021-11-20 05:33:16,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 626 transitions. [2021-11-20 05:33:16,004 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 626 transitions. Word has length 131 [2021-11-20 05:33:16,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:33:16,006 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 626 transitions. [2021-11-20 05:33:16,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-20 05:33:16,007 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 626 transitions. [2021-11-20 05:33:16,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-20 05:33:16,018 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:33:16,019 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 05:33:16,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 05:33:16,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:33:16,234 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:33:16,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:16,234 INFO L85 PathProgramCache]: Analyzing trace with hash 822404035, now seen corresponding path program 1 times [2021-11-20 05:33:16,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:16,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297152155] [2021-11-20 05:33:16,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:16,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:16,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:16,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:33:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:16,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:33:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:16,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:33:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:16,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-20 05:33:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:16,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 05:33:16,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:16,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 05:33:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:16,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 05:33:16,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:16,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-20 05:33:16,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:16,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 05:33:16,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:16,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-20 05:33:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:16,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-20 05:33:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:16,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-20 05:33:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:16,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-20 05:33:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:16,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-20 05:33:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:16,553 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-20 05:33:16,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:16,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297152155] [2021-11-20 05:33:16,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297152155] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:33:16,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767029736] [2021-11-20 05:33:16,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:16,559 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:33:16,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:33:16,562 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:33:16,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 05:33:16,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:16,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 05:33:16,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:33:17,106 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-20 05:33:17,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:33:17,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767029736] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:17,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:33:17,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-11-20 05:33:17,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269497802] [2021-11-20 05:33:17,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:17,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:33:17,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:17,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:33:17,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:33:17,111 INFO L87 Difference]: Start difference. First operand 412 states and 626 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-20 05:33:17,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:33:17,174 INFO L93 Difference]: Finished difference Result 630 states and 936 transitions. [2021-11-20 05:33:17,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:33:17,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 113 [2021-11-20 05:33:17,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:33:17,179 INFO L225 Difference]: With dead ends: 630 [2021-11-20 05:33:17,179 INFO L226 Difference]: Without dead ends: 415 [2021-11-20 05:33:17,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:33:17,182 INFO L933 BasicCegarLoop]: 624 mSDtfsCounter, 1 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:33:17,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1246 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:33:17,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-11-20 05:33:17,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 414. [2021-11-20 05:33:17,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 323 states have (on average 1.5448916408668731) internal successors, (499), 326 states have internal predecessors, (499), 66 states have call successors, (66), 25 states have call predecessors, (66), 24 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) [2021-11-20 05:33:17,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 628 transitions. [2021-11-20 05:33:17,228 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 628 transitions. Word has length 113 [2021-11-20 05:33:17,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:33:17,229 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 628 transitions. [2021-11-20 05:33:17,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-20 05:33:17,229 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 628 transitions. [2021-11-20 05:33:17,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-20 05:33:17,232 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:33:17,233 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:33:17,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 05:33:17,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:33:17,454 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:33:17,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:17,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1636196821, now seen corresponding path program 1 times [2021-11-20 05:33:17,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:17,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521800949] [2021-11-20 05:33:17,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:17,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:17,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:33:17,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:17,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:33:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:17,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:33:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:17,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-20 05:33:17,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:17,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 05:33:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:17,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 05:33:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:17,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-20 05:33:17,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:17,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-20 05:33:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:17,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-20 05:33:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:17,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-20 05:33:17,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:17,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-20 05:33:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:17,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-20 05:33:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:17,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-20 05:33:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:17,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-20 05:33:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:17,633 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-20 05:33:17,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:17,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521800949] [2021-11-20 05:33:17,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521800949] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:33:17,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419778246] [2021-11-20 05:33:17,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:17,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:33:17,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:33:17,642 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:33:17,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 05:33:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:17,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:33:17,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:33:18,156 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-20 05:33:18,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:33:18,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419778246] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:18,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:33:18,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-11-20 05:33:18,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389548207] [2021-11-20 05:33:18,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:18,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:33:18,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:18,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:33:18,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:33:18,158 INFO L87 Difference]: Start difference. First operand 414 states and 628 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-20 05:33:18,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:33:18,219 INFO L93 Difference]: Finished difference Result 881 states and 1356 transitions. [2021-11-20 05:33:18,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:33:18,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 122 [2021-11-20 05:33:18,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:33:18,247 INFO L225 Difference]: With dead ends: 881 [2021-11-20 05:33:18,247 INFO L226 Difference]: Without dead ends: 494 [2021-11-20 05:33:18,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:33:18,250 INFO L933 BasicCegarLoop]: 648 mSDtfsCounter, 142 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:33:18,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 1228 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:33:18,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2021-11-20 05:33:18,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 486. [2021-11-20 05:33:18,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 381 states have (on average 1.5643044619422573) internal successors, (596), 384 states have internal predecessors, (596), 80 states have call successors, (80), 25 states have call predecessors, (80), 24 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) [2021-11-20 05:33:18,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 753 transitions. [2021-11-20 05:33:18,298 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 753 transitions. Word has length 122 [2021-11-20 05:33:18,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:33:18,299 INFO L470 AbstractCegarLoop]: Abstraction has 486 states and 753 transitions. [2021-11-20 05:33:18,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-20 05:33:18,300 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 753 transitions. [2021-11-20 05:33:18,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-20 05:33:18,303 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:33:18,304 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-11-20 05:33:18,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 05:33:18,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:33:18,526 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:33:18,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:18,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1246448940, now seen corresponding path program 1 times [2021-11-20 05:33:18,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:18,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249819010] [2021-11-20 05:33:18,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:18,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:18,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:33:18,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:18,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:33:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:18,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:33:18,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:18,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-20 05:33:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:18,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 05:33:18,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:18,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 05:33:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:18,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-20 05:33:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:18,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-20 05:33:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:18,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-20 05:33:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:18,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-20 05:33:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:18,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-20 05:33:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:18,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-20 05:33:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:18,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-20 05:33:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:18,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-20 05:33:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:18,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-20 05:33:18,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:18,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-20 05:33:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:18,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-20 05:33:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:18,747 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-20 05:33:18,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:18,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249819010] [2021-11-20 05:33:18,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249819010] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:33:18,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182923487] [2021-11-20 05:33:18,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:18,748 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:33:18,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:33:18,749 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:33:18,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 05:33:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:19,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 05:33:19,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:33:19,383 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-20 05:33:19,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:33:19,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182923487] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:19,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:33:19,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-11-20 05:33:19,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567899980] [2021-11-20 05:33:19,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:19,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:33:19,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:19,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:33:19,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:33:19,391 INFO L87 Difference]: Start difference. First operand 486 states and 753 transitions. Second operand has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-20 05:33:19,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:33:19,501 INFO L93 Difference]: Finished difference Result 963 states and 1496 transitions. [2021-11-20 05:33:19,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:33:19,502 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 142 [2021-11-20 05:33:19,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:33:19,508 INFO L225 Difference]: With dead ends: 963 [2021-11-20 05:33:19,508 INFO L226 Difference]: Without dead ends: 488 [2021-11-20 05:33:19,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:33:19,515 INFO L933 BasicCegarLoop]: 617 mSDtfsCounter, 160 mSDsluCounter, 1669 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 2286 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:33:19,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 2286 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:33:19,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-11-20 05:33:19,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 488. [2021-11-20 05:33:19,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 382 states have (on average 1.5628272251308901) internal successors, (597), 386 states have internal predecessors, (597), 80 states have call successors, (80), 25 states have call predecessors, (80), 25 states have return successors, (79), 76 states have call predecessors, (79), 77 states have call successors, (79) [2021-11-20 05:33:19,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 756 transitions. [2021-11-20 05:33:19,565 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 756 transitions. Word has length 142 [2021-11-20 05:33:19,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:33:19,566 INFO L470 AbstractCegarLoop]: Abstraction has 488 states and 756 transitions. [2021-11-20 05:33:19,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-20 05:33:19,567 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 756 transitions. [2021-11-20 05:33:19,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-20 05:33:19,571 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:33:19,572 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-11-20 05:33:19,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 05:33:19,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:33:19,785 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:33:19,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:19,786 INFO L85 PathProgramCache]: Analyzing trace with hash 17221766, now seen corresponding path program 1 times [2021-11-20 05:33:19,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:19,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71136875] [2021-11-20 05:33:19,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:19,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:19,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:33:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:19,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:33:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:19,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:33:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:19,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:33:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:19,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-20 05:33:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:19,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-11-20 05:33:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:19,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-20 05:33:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:19,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-20 05:33:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:19,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-20 05:33:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:19,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-20 05:33:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:19,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-20 05:33:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:19,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-20 05:33:19,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:19,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-20 05:33:19,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:19,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-20 05:33:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:19,981 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-20 05:33:19,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:19,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71136875] [2021-11-20 05:33:19,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71136875] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:33:19,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540231769] [2021-11-20 05:33:19,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:19,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:33:19,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:33:19,985 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:33:20,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 05:33:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:20,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 1183 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 05:33:20,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:33:20,513 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-20 05:33:20,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:33:20,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540231769] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:20,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:33:20,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-11-20 05:33:20,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940195893] [2021-11-20 05:33:20,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:20,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:33:20,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:20,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:33:20,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-20 05:33:20,516 INFO L87 Difference]: Start difference. First operand 488 states and 756 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 05:33:20,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:33:20,594 INFO L93 Difference]: Finished difference Result 965 states and 1501 transitions. [2021-11-20 05:33:20,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:33:20,595 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 124 [2021-11-20 05:33:20,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:33:20,600 INFO L225 Difference]: With dead ends: 965 [2021-11-20 05:33:20,600 INFO L226 Difference]: Without dead ends: 490 [2021-11-20 05:33:20,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-11-20 05:33:20,603 INFO L933 BasicCegarLoop]: 615 mSDtfsCounter, 159 mSDsluCounter, 1660 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 2275 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:33:20,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 2275 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:33:20,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-11-20 05:33:20,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 490. [2021-11-20 05:33:20,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 383 states have (on average 1.5613577023498695) internal successors, (598), 388 states have internal predecessors, (598), 80 states have call successors, (80), 25 states have call predecessors, (80), 26 states have return successors, (84), 76 states have call predecessors, (84), 77 states have call successors, (84) [2021-11-20 05:33:20,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 762 transitions. [2021-11-20 05:33:20,632 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 762 transitions. Word has length 124 [2021-11-20 05:33:20,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:33:20,632 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 762 transitions. [2021-11-20 05:33:20,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 05:33:20,633 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 762 transitions. [2021-11-20 05:33:20,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-20 05:33:20,636 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:33:20,636 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-11-20 05:33:20,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 05:33:20,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:33:20,849 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:33:20,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:20,850 INFO L85 PathProgramCache]: Analyzing trace with hash 114471896, now seen corresponding path program 1 times [2021-11-20 05:33:20,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:20,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913126710] [2021-11-20 05:33:20,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:20,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:20,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:33:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:20,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:33:20,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:20,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:33:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:20,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:33:20,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:20,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:33:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:20,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 05:33:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:20,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-20 05:33:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:20,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 05:33:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:20,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 05:33:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:20,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-20 05:33:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:20,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-20 05:33:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:20,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-20 05:33:20,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:20,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-20 05:33:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:20,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-20 05:33:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:20,984 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-20 05:33:20,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:20,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913126710] [2021-11-20 05:33:20,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913126710] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:20,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:33:20,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 05:33:20,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27485963] [2021-11-20 05:33:20,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:20,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:33:20,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:20,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:33:20,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:33:20,987 INFO L87 Difference]: Start difference. First operand 490 states and 762 transitions. Second operand has 9 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 05:33:23,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:33:23,408 INFO L93 Difference]: Finished difference Result 1163 states and 1837 transitions. [2021-11-20 05:33:23,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 05:33:23,409 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 125 [2021-11-20 05:33:23,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:33:23,416 INFO L225 Difference]: With dead ends: 1163 [2021-11-20 05:33:23,416 INFO L226 Difference]: Without dead ends: 696 [2021-11-20 05:33:23,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-20 05:33:23,419 INFO L933 BasicCegarLoop]: 754 mSDtfsCounter, 1545 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 2371 mSolverCounterSat, 636 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1565 SdHoareTripleChecker+Valid, 2108 SdHoareTripleChecker+Invalid, 3007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 636 IncrementalHoareTripleChecker+Valid, 2371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:33:23,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1565 Valid, 2108 Invalid, 3007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [636 Valid, 2371 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 05:33:23,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2021-11-20 05:33:23,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 490. [2021-11-20 05:33:23,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 383 states have (on average 1.5613577023498695) internal successors, (598), 388 states have internal predecessors, (598), 80 states have call successors, (80), 25 states have call predecessors, (80), 26 states have return successors, (83), 76 states have call predecessors, (83), 77 states have call successors, (83) [2021-11-20 05:33:23,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 761 transitions. [2021-11-20 05:33:23,480 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 761 transitions. Word has length 125 [2021-11-20 05:33:23,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:33:23,482 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 761 transitions. [2021-11-20 05:33:23,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.25) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 05:33:23,482 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 761 transitions. [2021-11-20 05:33:23,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-20 05:33:23,485 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:33:23,486 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 05:33:23,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 05:33:23,486 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:33:23,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:23,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1240025766, now seen corresponding path program 2 times [2021-11-20 05:33:23,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:23,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918575445] [2021-11-20 05:33:23,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:23,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:23,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:33:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:23,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:33:23,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:23,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:33:23,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:23,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:33:23,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:23,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:33:23,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:23,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 05:33:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:23,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-20 05:33:23,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:23,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 05:33:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:23,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-20 05:33:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:23,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-20 05:33:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:23,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 05:33:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:23,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-20 05:33:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:23,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 05:33:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:23,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-20 05:33:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:23,643 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-20 05:33:23,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:23,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918575445] [2021-11-20 05:33:23,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918575445] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:23,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:33:23,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 05:33:23,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641457769] [2021-11-20 05:33:23,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:23,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:33:23,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:23,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:33:23,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:33:23,646 INFO L87 Difference]: Start difference. First operand 490 states and 761 transitions. Second operand has 9 states, 8 states have (on average 10.375) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 05:33:26,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:33:26,020 INFO L93 Difference]: Finished difference Result 1165 states and 1840 transitions. [2021-11-20 05:33:26,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 05:33:26,021 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.375) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 126 [2021-11-20 05:33:26,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:33:26,028 INFO L225 Difference]: With dead ends: 1165 [2021-11-20 05:33:26,028 INFO L226 Difference]: Without dead ends: 698 [2021-11-20 05:33:26,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-20 05:33:26,031 INFO L933 BasicCegarLoop]: 757 mSDtfsCounter, 1539 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 632 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1560 SdHoareTripleChecker+Valid, 2114 SdHoareTripleChecker+Invalid, 3012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 632 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:33:26,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1560 Valid, 2114 Invalid, 3012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [632 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 05:33:26,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2021-11-20 05:33:26,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 492. [2021-11-20 05:33:26,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 384 states have (on average 1.5598958333333333) internal successors, (599), 390 states have internal predecessors, (599), 80 states have call successors, (80), 25 states have call predecessors, (80), 27 states have return successors, (85), 76 states have call predecessors, (85), 77 states have call successors, (85) [2021-11-20 05:33:26,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 764 transitions. [2021-11-20 05:33:26,076 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 764 transitions. Word has length 126 [2021-11-20 05:33:26,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:33:26,076 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 764 transitions. [2021-11-20 05:33:26,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.375) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 05:33:26,077 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 764 transitions. [2021-11-20 05:33:26,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-20 05:33:26,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:33:26,080 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-11-20 05:33:26,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 05:33:26,081 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:33:26,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:26,081 INFO L85 PathProgramCache]: Analyzing trace with hash 204817131, now seen corresponding path program 1 times [2021-11-20 05:33:26,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:26,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818572211] [2021-11-20 05:33:26,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:26,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:26,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:33:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:26,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:33:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:26,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:33:26,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:26,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:33:26,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:26,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:33:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:26,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 05:33:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:26,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-20 05:33:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:26,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-20 05:33:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:26,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-20 05:33:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:26,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-20 05:33:26,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:26,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-20 05:33:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:26,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-20 05:33:26,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:26,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 05:33:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:26,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-20 05:33:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:26,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-20 05:33:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:26,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-20 05:33:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:26,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-11-20 05:33:26,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:26,220 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-20 05:33:26,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:26,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818572211] [2021-11-20 05:33:26,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818572211] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:26,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:33:26,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 05:33:26,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520848654] [2021-11-20 05:33:26,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:26,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:33:26,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:26,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:33:26,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:33:26,223 INFO L87 Difference]: Start difference. First operand 492 states and 764 transitions. Second operand has 9 states, 8 states have (on average 11.375) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-20 05:33:28,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:33:28,578 INFO L93 Difference]: Finished difference Result 1165 states and 1839 transitions. [2021-11-20 05:33:28,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 05:33:28,579 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.375) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 146 [2021-11-20 05:33:28,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:33:28,586 INFO L225 Difference]: With dead ends: 1165 [2021-11-20 05:33:28,586 INFO L226 Difference]: Without dead ends: 698 [2021-11-20 05:33:28,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-11-20 05:33:28,590 INFO L933 BasicCegarLoop]: 741 mSDtfsCounter, 1552 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 2315 mSolverCounterSat, 644 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1573 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 2959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 644 IncrementalHoareTripleChecker+Valid, 2315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:33:28,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1573 Valid, 2085 Invalid, 2959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [644 Valid, 2315 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 05:33:28,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2021-11-20 05:33:28,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 492. [2021-11-20 05:33:28,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 384 states have (on average 1.5598958333333333) internal successors, (599), 390 states have internal predecessors, (599), 80 states have call successors, (80), 25 states have call predecessors, (80), 27 states have return successors, (85), 76 states have call predecessors, (85), 77 states have call successors, (85) [2021-11-20 05:33:28,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 764 transitions. [2021-11-20 05:33:28,659 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 764 transitions. Word has length 146 [2021-11-20 05:33:28,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:33:28,660 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 764 transitions. [2021-11-20 05:33:28,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.375) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-20 05:33:28,660 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 764 transitions. [2021-11-20 05:33:28,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-20 05:33:28,664 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:33:28,664 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-11-20 05:33:28,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 05:33:28,664 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:33:28,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:28,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1958799443, now seen corresponding path program 1 times [2021-11-20 05:33:28,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:28,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488787258] [2021-11-20 05:33:28,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:28,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:28,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:33:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:28,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:33:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:28,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:33:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:28,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:33:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:28,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:33:28,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:28,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 05:33:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:28,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-20 05:33:28,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:28,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-20 05:33:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:28,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-20 05:33:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:28,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-20 05:33:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:28,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-20 05:33:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:28,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-20 05:33:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:28,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 05:33:28,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:28,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-20 05:33:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:28,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-20 05:33:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:28,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-20 05:33:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:28,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-11-20 05:33:28,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:28,848 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-20 05:33:28,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:28,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488787258] [2021-11-20 05:33:28,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488787258] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:28,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:33:28,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 05:33:28,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312953073] [2021-11-20 05:33:28,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:28,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 05:33:28,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:28,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 05:33:28,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:33:28,851 INFO L87 Difference]: Start difference. First operand 492 states and 764 transitions. Second operand has 12 states, 11 states have (on average 8.545454545454545) internal successors, (94), 8 states have internal predecessors, (94), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-11-20 05:33:31,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:33:31,987 INFO L93 Difference]: Finished difference Result 1163 states and 1834 transitions. [2021-11-20 05:33:31,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 05:33:31,988 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.545454545454545) internal successors, (94), 8 states have internal predecessors, (94), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 146 [2021-11-20 05:33:31,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:33:31,995 INFO L225 Difference]: With dead ends: 1163 [2021-11-20 05:33:31,995 INFO L226 Difference]: Without dead ends: 698 [2021-11-20 05:33:31,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-11-20 05:33:32,000 INFO L933 BasicCegarLoop]: 730 mSDtfsCounter, 1696 mSDsluCounter, 2008 mSDsCounter, 0 mSdLazyCounter, 4148 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1696 SdHoareTripleChecker+Valid, 2738 SdHoareTripleChecker+Invalid, 4844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 4148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-20 05:33:32,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1696 Valid, 2738 Invalid, 4844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [696 Valid, 4148 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-20 05:33:32,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2021-11-20 05:33:32,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 492. [2021-11-20 05:33:32,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 384 states have (on average 1.5598958333333333) internal successors, (599), 390 states have internal predecessors, (599), 80 states have call successors, (80), 25 states have call predecessors, (80), 27 states have return successors, (84), 76 states have call predecessors, (84), 77 states have call successors, (84) [2021-11-20 05:33:32,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 763 transitions. [2021-11-20 05:33:32,046 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 763 transitions. Word has length 146 [2021-11-20 05:33:32,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:33:32,048 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 763 transitions. [2021-11-20 05:33:32,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.545454545454545) internal successors, (94), 8 states have internal predecessors, (94), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-11-20 05:33:32,048 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 763 transitions. [2021-11-20 05:33:32,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-20 05:33:32,051 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:33:32,052 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 05:33:32,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 05:33:32,052 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:33:32,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:32,053 INFO L85 PathProgramCache]: Analyzing trace with hash -434812737, now seen corresponding path program 1 times [2021-11-20 05:33:32,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:32,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605595021] [2021-11-20 05:33:32,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:32,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:32,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:33:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:32,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:33:32,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:32,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:33:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:32,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:33:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:32,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:33:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:32,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 05:33:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:32,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-20 05:33:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:32,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-20 05:33:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:32,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-20 05:33:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:32,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-20 05:33:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:32,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 05:33:32,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:32,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-20 05:33:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:32,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-20 05:33:32,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:32,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-20 05:33:32,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:32,248 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-20 05:33:32,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:32,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605595021] [2021-11-20 05:33:32,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605595021] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:32,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:33:32,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-20 05:33:32,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933350556] [2021-11-20 05:33:32,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:32,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 05:33:32,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:32,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 05:33:32,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:33:32,251 INFO L87 Difference]: Start difference. First operand 492 states and 763 transitions. Second operand has 12 states, 11 states have (on average 8.0) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-20 05:33:35,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:33:35,347 INFO L93 Difference]: Finished difference Result 1165 states and 1840 transitions. [2021-11-20 05:33:35,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 05:33:35,347 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.0) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 128 [2021-11-20 05:33:35,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:33:35,355 INFO L225 Difference]: With dead ends: 1165 [2021-11-20 05:33:35,355 INFO L226 Difference]: Without dead ends: 700 [2021-11-20 05:33:35,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-11-20 05:33:35,358 INFO L933 BasicCegarLoop]: 747 mSDtfsCounter, 1678 mSDsluCounter, 2026 mSDsCounter, 0 mSdLazyCounter, 4284 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1678 SdHoareTripleChecker+Valid, 2773 SdHoareTripleChecker+Invalid, 4965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 4284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-20 05:33:35,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1678 Valid, 2773 Invalid, 4965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 4284 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-20 05:33:35,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2021-11-20 05:33:35,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 494. [2021-11-20 05:33:35,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 385 states have (on average 1.5584415584415585) internal successors, (600), 392 states have internal predecessors, (600), 80 states have call successors, (80), 25 states have call predecessors, (80), 28 states have return successors, (89), 76 states have call predecessors, (89), 77 states have call successors, (89) [2021-11-20 05:33:35,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 769 transitions. [2021-11-20 05:33:35,400 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 769 transitions. Word has length 128 [2021-11-20 05:33:35,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:33:35,401 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 769 transitions. [2021-11-20 05:33:35,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.0) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-20 05:33:35,401 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 769 transitions. [2021-11-20 05:33:35,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-20 05:33:35,405 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:33:35,405 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-11-20 05:33:35,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 05:33:35,406 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:33:35,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:35,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1820702430, now seen corresponding path program 1 times [2021-11-20 05:33:35,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:35,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433614917] [2021-11-20 05:33:35,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:35,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:35,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:33:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:35,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:33:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:35,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:33:35,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:35,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:33:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:35,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:33:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:35,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 05:33:35,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:35,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-20 05:33:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:35,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-20 05:33:35,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:35,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 05:33:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:35,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-20 05:33:35,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:35,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-20 05:33:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:35,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-20 05:33:35,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:35,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-20 05:33:35,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:35,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-20 05:33:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:35,558 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-20 05:33:35,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:35,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433614917] [2021-11-20 05:33:35,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433614917] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:33:35,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926646434] [2021-11-20 05:33:35,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:35,559 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:33:35,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:33:35,562 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:33:35,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 05:33:35,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:35,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 1188 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:33:35,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:33:36,090 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 05:33:36,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:33:36,335 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 05:33:36,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926646434] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:33:36,335 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:33:36,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2021-11-20 05:33:36,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439399320] [2021-11-20 05:33:36,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:33:36,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 05:33:36,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:36,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 05:33:36,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-20 05:33:36,340 INFO L87 Difference]: Start difference. First operand 494 states and 769 transitions. Second operand has 15 states, 14 states have (on average 10.357142857142858) internal successors, (145), 11 states have internal predecessors, (145), 4 states have call successors, (35), 6 states have call predecessors, (35), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-20 05:33:40,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:33:40,967 INFO L93 Difference]: Finished difference Result 2074 states and 3478 transitions. [2021-11-20 05:33:40,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 05:33:40,971 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 10.357142857142858) internal successors, (145), 11 states have internal predecessors, (145), 4 states have call successors, (35), 6 states have call predecessors, (35), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 129 [2021-11-20 05:33:40,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:33:40,983 INFO L225 Difference]: With dead ends: 2074 [2021-11-20 05:33:40,984 INFO L226 Difference]: Without dead ends: 1611 [2021-11-20 05:33:40,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-11-20 05:33:40,988 INFO L933 BasicCegarLoop]: 958 mSDtfsCounter, 4078 mSDsluCounter, 4248 mSDsCounter, 0 mSdLazyCounter, 6505 mSolverCounterSat, 1681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4080 SdHoareTripleChecker+Valid, 5206 SdHoareTripleChecker+Invalid, 8186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1681 IncrementalHoareTripleChecker+Valid, 6505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:33:40,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4080 Valid, 5206 Invalid, 8186 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1681 Valid, 6505 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-11-20 05:33:40,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2021-11-20 05:33:41,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 937. [2021-11-20 05:33:41,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 749 states have (on average 1.610146862483311) internal successors, (1206), 756 states have internal predecessors, (1206), 159 states have call successors, (159), 25 states have call predecessors, (159), 28 states have return successors, (178), 155 states have call predecessors, (178), 156 states have call successors, (178) [2021-11-20 05:33:41,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1543 transitions. [2021-11-20 05:33:41,076 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1543 transitions. Word has length 129 [2021-11-20 05:33:41,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:33:41,076 INFO L470 AbstractCegarLoop]: Abstraction has 937 states and 1543 transitions. [2021-11-20 05:33:41,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 10.357142857142858) internal successors, (145), 11 states have internal predecessors, (145), 4 states have call successors, (35), 6 states have call predecessors, (35), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-20 05:33:41,077 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1543 transitions. [2021-11-20 05:33:41,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-20 05:33:41,082 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:33:41,083 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-11-20 05:33:41,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 05:33:41,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a19de17-9a34-4705-91b2-3e28ed658f85/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:33:41,298 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:33:41,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:41,298 INFO L85 PathProgramCache]: Analyzing trace with hash 509361892, now seen corresponding path program 1 times [2021-11-20 05:33:41,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:41,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653440084] [2021-11-20 05:33:41,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:41,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:41,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:33:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:41,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:33:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:41,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:33:41,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:41,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:33:41,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:41,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:33:41,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:41,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 05:33:41,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:41,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-20 05:33:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:41,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-20 05:33:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:41,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-20 05:33:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:41,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-20 05:33:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:41,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-20 05:33:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:41,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-20 05:33:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:41,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-20 05:33:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:41,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-20 05:33:41,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:41,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-20 05:33:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:41,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-20 05:33:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:41,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-20 05:33:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:41,416 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-20 05:33:41,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:41,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653440084] [2021-11-20 05:33:41,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653440084] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:41,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:33:41,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 05:33:41,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864268996] [2021-11-20 05:33:41,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:41,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:33:41,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:41,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:33:41,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:33:41,419 INFO L87 Difference]: Start difference. First operand 937 states and 1543 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-20 05:33:43,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:33:43,082 INFO L93 Difference]: Finished difference Result 2425 states and 4086 transitions. [2021-11-20 05:33:43,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:33:43,086 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 151 [2021-11-20 05:33:43,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:33:43,101 INFO L225 Difference]: With dead ends: 2425 [2021-11-20 05:33:43,102 INFO L226 Difference]: Without dead ends: 1566 [2021-11-20 05:33:43,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:33:43,107 INFO L933 BasicCegarLoop]: 798 mSDtfsCounter, 1536 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 693 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 1945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 693 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:33:43,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1555 Valid, 1770 Invalid, 1945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [693 Valid, 1252 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 05:33:43,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2021-11-20 05:33:43,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1352. [2021-11-20 05:33:43,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1085 states have (on average 1.6276497695852534) internal successors, (1766), 1092 states have internal predecessors, (1766), 238 states have call successors, (238), 25 states have call predecessors, (238), 28 states have return successors, (267), 234 states have call predecessors, (267), 235 states have call successors, (267) [2021-11-20 05:33:43,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 2271 transitions. [2021-11-20 05:33:43,253 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 2271 transitions. Word has length 151 [2021-11-20 05:33:43,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:33:43,253 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 2271 transitions. [2021-11-20 05:33:43,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-20 05:33:43,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 2271 transitions. [2021-11-20 05:33:43,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-20 05:33:43,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:33:43,263 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-11-20 05:33:43,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 05:33:43,263 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:33:43,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:43,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1325865596, now seen corresponding path program 1 times [2021-11-20 05:33:43,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:43,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19937402] [2021-11-20 05:33:43,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:43,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:43,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:43,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:33:43,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:43,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:33:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:43,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:33:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:43,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:33:43,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:43,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:33:43,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:43,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 05:33:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:43,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-20 05:33:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:43,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-20 05:33:43,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:43,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-20 05:33:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:43,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-20 05:33:43,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:43,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-20 05:33:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:43,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-20 05:33:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:43,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-20 05:33:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:43,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-20 05:33:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:43,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-11-20 05:33:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:43,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-11-20 05:33:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:43,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-20 05:33:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:43,380 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-20 05:33:43,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:43,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19937402] [2021-11-20 05:33:43,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19937402] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:43,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:33:43,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 05:33:43,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517099431] [2021-11-20 05:33:43,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:43,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:33:43,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:43,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:33:43,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:33:43,383 INFO L87 Difference]: Start difference. First operand 1352 states and 2271 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-20 05:33:45,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:33:45,056 INFO L93 Difference]: Finished difference Result 3464 states and 5899 transitions. [2021-11-20 05:33:45,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:33:45,057 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 152 [2021-11-20 05:33:45,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:33:45,074 INFO L225 Difference]: With dead ends: 3464 [2021-11-20 05:33:45,074 INFO L226 Difference]: Without dead ends: 2243 [2021-11-20 05:33:45,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:33:45,080 INFO L933 BasicCegarLoop]: 778 mSDtfsCounter, 1538 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 1229 mSolverCounterSat, 697 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1557 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 1926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 697 IncrementalHoareTripleChecker+Valid, 1229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:33:45,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1557 Valid, 1716 Invalid, 1926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [697 Valid, 1229 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 05:33:45,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2243 states. [2021-11-20 05:33:45,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2243 to 2029. [2021-11-20 05:33:45,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2029 states, 1643 states have (on average 1.6360316494217895) internal successors, (2688), 1650 states have internal predecessors, (2688), 357 states have call successors, (357), 25 states have call predecessors, (357), 28 states have return successors, (386), 353 states have call predecessors, (386), 354 states have call successors, (386) [2021-11-20 05:33:45,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2029 states to 2029 states and 3431 transitions. [2021-11-20 05:33:45,261 INFO L78 Accepts]: Start accepts. Automaton has 2029 states and 3431 transitions. Word has length 152 [2021-11-20 05:33:45,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:33:45,261 INFO L470 AbstractCegarLoop]: Abstraction has 2029 states and 3431 transitions. [2021-11-20 05:33:45,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-20 05:33:45,262 INFO L276 IsEmpty]: Start isEmpty. Operand 2029 states and 3431 transitions. [2021-11-20 05:33:45,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 05:33:45,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:33:45,299 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-20 05:33:45,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 05:33:45,300 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:33:45,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:45,300 INFO L85 PathProgramCache]: Analyzing trace with hash 623891064, now seen corresponding path program 1 times [2021-11-20 05:33:45,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:45,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740488874] [2021-11-20 05:33:45,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:45,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:45,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:45,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:33:45,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:45,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:33:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:45,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:33:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:45,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:33:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:45,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:33:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:45,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 05:33:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:45,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-20 05:33:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:45,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-20 05:33:45,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:45,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 05:33:45,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:45,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 05:33:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:45,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-20 05:33:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:45,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-20 05:33:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:45,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-20 05:33:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:45,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-20 05:33:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:45,406 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 05:33:45,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:45,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740488874] [2021-11-20 05:33:45,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740488874] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:45,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:33:45,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 05:33:45,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209862563] [2021-11-20 05:33:45,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:45,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:33:45,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:45,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:33:45,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:33:45,410 INFO L87 Difference]: Start difference. First operand 2029 states and 3431 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-20 05:33:47,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:33:47,100 INFO L93 Difference]: Finished difference Result 5049 states and 8678 transitions. [2021-11-20 05:33:47,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:33:47,102 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 134 [2021-11-20 05:33:47,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:33:47,127 INFO L225 Difference]: With dead ends: 5049 [2021-11-20 05:33:47,128 INFO L226 Difference]: Without dead ends: 3286 [2021-11-20 05:33:47,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:33:47,135 INFO L933 BasicCegarLoop]: 783 mSDtfsCounter, 1529 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 685 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 1922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 685 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:33:47,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1547 Valid, 1717 Invalid, 1922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [685 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 05:33:47,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3286 states. [2021-11-20 05:33:47,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3286 to 3072. [2021-11-20 05:33:47,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3072 states, 2524 states have (on average 1.6426307448494453) internal successors, (4146), 2531 states have internal predecessors, (4146), 519 states have call successors, (519), 25 states have call predecessors, (519), 28 states have return successors, (564), 515 states have call predecessors, (564), 516 states have call successors, (564) [2021-11-20 05:33:47,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 5229 transitions. [2021-11-20 05:33:47,428 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 5229 transitions. Word has length 134 [2021-11-20 05:33:47,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:33:47,428 INFO L470 AbstractCegarLoop]: Abstraction has 3072 states and 5229 transitions. [2021-11-20 05:33:47,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-20 05:33:47,429 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 5229 transitions. [2021-11-20 05:33:47,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-20 05:33:47,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:33:47,446 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-11-20 05:33:47,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 05:33:47,447 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:33:47,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:47,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1019510181, now seen corresponding path program 1 times [2021-11-20 05:33:47,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:47,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117617536] [2021-11-20 05:33:47,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:47,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:47,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:33:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:47,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:33:47,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:47,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:33:47,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:47,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:33:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:47,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:33:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:47,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 05:33:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:47,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-20 05:33:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:47,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-20 05:33:47,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:47,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-20 05:33:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:47,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 05:33:47,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:47,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-20 05:33:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:47,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-20 05:33:47,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:47,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-20 05:33:47,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:47,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-20 05:33:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:47,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-20 05:33:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:47,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-20 05:33:47,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:47,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-20 05:33:47,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:47,572 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-20 05:33:47,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:47,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117617536] [2021-11-20 05:33:47,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117617536] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:47,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:33:47,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 05:33:47,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607013045] [2021-11-20 05:33:47,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:47,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:33:47,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:47,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:33:47,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:33:47,576 INFO L87 Difference]: Start difference. First operand 3072 states and 5229 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-20 05:33:49,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:33:49,409 INFO L93 Difference]: Finished difference Result 7563 states and 13093 transitions. [2021-11-20 05:33:49,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:33:49,409 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 154 [2021-11-20 05:33:49,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:33:49,439 INFO L225 Difference]: With dead ends: 7563 [2021-11-20 05:33:49,439 INFO L226 Difference]: Without dead ends: 4976 [2021-11-20 05:33:49,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:33:49,447 INFO L933 BasicCegarLoop]: 785 mSDtfsCounter, 1527 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 685 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 1924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 685 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:33:49,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1545 Valid, 1718 Invalid, 1924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [685 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 05:33:49,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4976 states. [2021-11-20 05:33:49,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4976 to 4762. [2021-11-20 05:33:49,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4762 states, 3969 states have (on average 1.6472663139329806) internal successors, (6538), 3976 states have internal predecessors, (6538), 764 states have call successors, (764), 25 states have call predecessors, (764), 28 states have return successors, (835), 760 states have call predecessors, (835), 761 states have call successors, (835) [2021-11-20 05:33:49,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4762 states to 4762 states and 8137 transitions. [2021-11-20 05:33:49,889 INFO L78 Accepts]: Start accepts. Automaton has 4762 states and 8137 transitions. Word has length 154 [2021-11-20 05:33:49,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:33:49,889 INFO L470 AbstractCegarLoop]: Abstraction has 4762 states and 8137 transitions. [2021-11-20 05:33:49,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-20 05:33:49,891 INFO L276 IsEmpty]: Start isEmpty. Operand 4762 states and 8137 transitions. [2021-11-20 05:33:49,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-20 05:33:49,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:33:49,913 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-11-20 05:33:49,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 05:33:49,914 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:33:49,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:49,914 INFO L85 PathProgramCache]: Analyzing trace with hash 2124344878, now seen corresponding path program 1 times [2021-11-20 05:33:49,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:49,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693066799] [2021-11-20 05:33:49,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:49,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:49,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:33:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:49,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:33:49,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:49,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:33:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:49,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:33:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:49,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:33:49,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:49,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 05:33:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:50,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-20 05:33:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:50,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-20 05:33:50,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:50,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-20 05:33:50,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:50,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-20 05:33:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:50,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-20 05:33:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:50,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 05:33:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:50,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-20 05:33:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:50,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-20 05:33:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:50,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-20 05:33:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:50,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-11-20 05:33:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:50,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-20 05:33:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:50,050 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-20 05:33:50,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:50,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693066799] [2021-11-20 05:33:50,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693066799] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:50,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:33:50,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 05:33:50,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118191790] [2021-11-20 05:33:50,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:50,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:33:50,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:50,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:33:50,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:33:50,052 INFO L87 Difference]: Start difference. First operand 4762 states and 8137 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-20 05:33:51,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:33:51,961 INFO L93 Difference]: Finished difference Result 11764 states and 20470 transitions. [2021-11-20 05:33:51,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:33:51,962 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 155 [2021-11-20 05:33:51,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:33:52,010 INFO L225 Difference]: With dead ends: 11764 [2021-11-20 05:33:52,010 INFO L226 Difference]: Without dead ends: 7819 [2021-11-20 05:33:52,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:33:52,023 INFO L933 BasicCegarLoop]: 794 mSDtfsCounter, 1535 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 685 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 1934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 685 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:33:52,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1553 Valid, 1778 Invalid, 1934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [685 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 05:33:52,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7819 states. [2021-11-20 05:33:52,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7819 to 7605. [2021-11-20 05:33:52,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7605 states, 6319 states have (on average 1.6453552777338187) internal successors, (10397), 6326 states have internal predecessors, (10397), 1257 states have call successors, (1257), 25 states have call predecessors, (1257), 28 states have return successors, (1372), 1253 states have call predecessors, (1372), 1254 states have call successors, (1372) [2021-11-20 05:33:52,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7605 states to 7605 states and 13026 transitions. [2021-11-20 05:33:52,669 INFO L78 Accepts]: Start accepts. Automaton has 7605 states and 13026 transitions. Word has length 155 [2021-11-20 05:33:52,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:33:52,670 INFO L470 AbstractCegarLoop]: Abstraction has 7605 states and 13026 transitions. [2021-11-20 05:33:52,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-20 05:33:52,670 INFO L276 IsEmpty]: Start isEmpty. Operand 7605 states and 13026 transitions. [2021-11-20 05:33:52,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-20 05:33:52,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:33:52,703 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-20 05:33:52,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-20 05:33:52,704 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:33:52,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:52,704 INFO L85 PathProgramCache]: Analyzing trace with hash 431580257, now seen corresponding path program 1 times [2021-11-20 05:33:52,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:52,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490980929] [2021-11-20 05:33:52,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:52,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:52,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:33:52,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:52,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:33:52,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:52,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:33:52,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:52,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:33:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:52,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:33:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:52,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 05:33:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:52,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-20 05:33:52,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:52,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-20 05:33:52,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:52,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-20 05:33:52,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:52,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-20 05:33:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:52,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-20 05:33:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:52,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-20 05:33:52,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:52,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-20 05:33:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:52,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-20 05:33:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:52,815 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 05:33:52,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:52,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490980929] [2021-11-20 05:33:52,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490980929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:52,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:33:52,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 05:33:52,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959544636] [2021-11-20 05:33:52,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:52,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:33:52,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:52,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:33:52,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:33:52,818 INFO L87 Difference]: Start difference. First operand 7605 states and 13026 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-20 05:33:54,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:33:54,911 INFO L93 Difference]: Finished difference Result 19379 states and 33746 transitions. [2021-11-20 05:33:54,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:33:54,912 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 137 [2021-11-20 05:33:54,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:33:54,967 INFO L225 Difference]: With dead ends: 19379 [2021-11-20 05:33:54,967 INFO L226 Difference]: Without dead ends: 12993 [2021-11-20 05:33:54,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:33:54,987 INFO L933 BasicCegarLoop]: 771 mSDtfsCounter, 1536 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 705 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 1707 SdHoareTripleChecker+Invalid, 1929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 705 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:33:54,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1555 Valid, 1707 Invalid, 1929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [705 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 05:33:55,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12993 states. [2021-11-20 05:33:55,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12993 to 12779. [2021-11-20 05:33:55,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12779 states, 10671 states have (on average 1.645581482522725) internal successors, (17560), 10678 states have internal predecessors, (17560), 2079 states have call successors, (2079), 25 states have call predecessors, (2079), 28 states have return successors, (2272), 2075 states have call predecessors, (2272), 2076 states have call successors, (2272) [2021-11-20 05:33:56,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12779 states to 12779 states and 21911 transitions. [2021-11-20 05:33:56,040 INFO L78 Accepts]: Start accepts. Automaton has 12779 states and 21911 transitions. Word has length 137 [2021-11-20 05:33:56,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:33:56,041 INFO L470 AbstractCegarLoop]: Abstraction has 12779 states and 21911 transitions. [2021-11-20 05:33:56,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-20 05:33:56,041 INFO L276 IsEmpty]: Start isEmpty. Operand 12779 states and 21911 transitions. [2021-11-20 05:33:56,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-20 05:33:56,084 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:33:56,084 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-11-20 05:33:56,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-20 05:33:56,085 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:33:56,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:56,085 INFO L85 PathProgramCache]: Analyzing trace with hash -751866788, now seen corresponding path program 1 times [2021-11-20 05:33:56,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:56,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011108674] [2021-11-20 05:33:56,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:56,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:56,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:33:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:56,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:33:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:56,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:33:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:56,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:33:56,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:56,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:33:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:56,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 05:33:56,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:56,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-20 05:33:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:56,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 05:33:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:56,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-20 05:33:56,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:56,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-20 05:33:56,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:56,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-20 05:33:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:56,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-20 05:33:56,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:56,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-20 05:33:56,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:56,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-20 05:33:56,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:56,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-20 05:33:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:56,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-20 05:33:56,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:56,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-11-20 05:33:56,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:56,200 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-20 05:33:56,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:56,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011108674] [2021-11-20 05:33:56,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011108674] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:56,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:33:56,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 05:33:56,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004473646] [2021-11-20 05:33:56,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:56,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:33:56,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:56,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:33:56,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:33:56,205 INFO L87 Difference]: Start difference. First operand 12779 states and 21911 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-20 05:33:58,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:33:58,952 INFO L93 Difference]: Finished difference Result 30862 states and 53446 transitions. [2021-11-20 05:33:58,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:33:58,953 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 157 [2021-11-20 05:33:58,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:33:59,047 INFO L225 Difference]: With dead ends: 30862 [2021-11-20 05:33:59,047 INFO L226 Difference]: Without dead ends: 20306 [2021-11-20 05:33:59,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:33:59,081 INFO L933 BasicCegarLoop]: 779 mSDtfsCounter, 1526 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 1232 mSolverCounterSat, 688 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 1920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 688 IncrementalHoareTripleChecker+Valid, 1232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:33:59,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1545 Valid, 1686 Invalid, 1920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [688 Valid, 1232 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 05:33:59,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20306 states. [2021-11-20 05:34:00,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20306 to 20092. [2021-11-20 05:34:00,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20092 states, 16781 states have (on average 1.6212383052261485) internal successors, (27206), 16788 states have internal predecessors, (27206), 3282 states have call successors, (3282), 25 states have call predecessors, (3282), 28 states have return successors, (3619), 3278 states have call predecessors, (3619), 3279 states have call successors, (3619) [2021-11-20 05:34:00,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20092 states to 20092 states and 34107 transitions. [2021-11-20 05:34:00,572 INFO L78 Accepts]: Start accepts. Automaton has 20092 states and 34107 transitions. Word has length 157 [2021-11-20 05:34:00,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:34:00,573 INFO L470 AbstractCegarLoop]: Abstraction has 20092 states and 34107 transitions. [2021-11-20 05:34:00,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-20 05:34:00,573 INFO L276 IsEmpty]: Start isEmpty. Operand 20092 states and 34107 transitions. [2021-11-20 05:34:00,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-20 05:34:00,612 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:34:00,612 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-20 05:34:00,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-20 05:34:00,612 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:34:00,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:34:00,613 INFO L85 PathProgramCache]: Analyzing trace with hash 774004928, now seen corresponding path program 1 times [2021-11-20 05:34:00,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:34:00,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904792842] [2021-11-20 05:34:00,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:34:00,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:34:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:00,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:34:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:00,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:34:00,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:00,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:34:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:00,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:34:00,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:00,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:34:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:00,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 05:34:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:00,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-20 05:34:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:00,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-20 05:34:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:00,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-20 05:34:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:00,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-20 05:34:00,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:00,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-20 05:34:00,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:00,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-20 05:34:00,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:00,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-20 05:34:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:00,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-11-20 05:34:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:00,717 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 05:34:00,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:34:00,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904792842] [2021-11-20 05:34:00,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904792842] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:34:00,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:34:00,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 05:34:00,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539997167] [2021-11-20 05:34:00,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:34:00,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:34:00,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:34:00,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:34:00,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:34:00,721 INFO L87 Difference]: Start difference. First operand 20092 states and 34107 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-20 05:34:04,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:34:04,178 INFO L93 Difference]: Finished difference Result 53304 states and 91980 transitions. [2021-11-20 05:34:04,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:34:04,179 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 139 [2021-11-20 05:34:04,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:34:04,330 INFO L225 Difference]: With dead ends: 53304 [2021-11-20 05:34:04,330 INFO L226 Difference]: Without dead ends: 36112 [2021-11-20 05:34:04,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:34:04,381 INFO L933 BasicCegarLoop]: 783 mSDtfsCounter, 1523 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 692 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 1939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 692 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:34:04,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1542 Valid, 1719 Invalid, 1939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [692 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-20 05:34:04,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36112 states. [2021-11-20 05:34:07,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36112 to 35898. [2021-11-20 05:34:07,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35898 states, 30137 states have (on average 1.6182101735408303) internal successors, (48768), 30144 states have internal predecessors, (48768), 5732 states have call successors, (5732), 25 states have call predecessors, (5732), 28 states have return successors, (6343), 5728 states have call predecessors, (6343), 5729 states have call successors, (6343) [2021-11-20 05:34:07,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35898 states to 35898 states and 60843 transitions. [2021-11-20 05:34:07,327 INFO L78 Accepts]: Start accepts. Automaton has 35898 states and 60843 transitions. Word has length 139 [2021-11-20 05:34:07,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:34:07,327 INFO L470 AbstractCegarLoop]: Abstraction has 35898 states and 60843 transitions. [2021-11-20 05:34:07,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-20 05:34:07,328 INFO L276 IsEmpty]: Start isEmpty. Operand 35898 states and 60843 transitions. [2021-11-20 05:34:07,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-20 05:34:07,363 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:34:07,363 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-20 05:34:07,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-20 05:34:07,363 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:34:07,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:34:07,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1976124428, now seen corresponding path program 1 times [2021-11-20 05:34:07,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:34:07,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689674479] [2021-11-20 05:34:07,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:34:07,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:34:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:07,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:34:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:07,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:34:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:07,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:34:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:07,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:34:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:07,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:34:07,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:07,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 05:34:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:07,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-20 05:34:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:07,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-20 05:34:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:07,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-20 05:34:07,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:07,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-20 05:34:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:07,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 05:34:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:07,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-20 05:34:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:07,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-20 05:34:07,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:07,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-20 05:34:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:07,487 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 05:34:07,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:34:07,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689674479] [2021-11-20 05:34:07,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689674479] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:34:07,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:34:07,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 05:34:07,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974953868] [2021-11-20 05:34:07,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:34:07,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:34:07,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:34:07,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:34:07,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:34:07,490 INFO L87 Difference]: Start difference. First operand 35898 states and 60843 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-20 05:34:12,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:34:12,400 INFO L93 Difference]: Finished difference Result 98151 states and 168539 transitions. [2021-11-20 05:34:12,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:34:12,401 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 140 [2021-11-20 05:34:12,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:34:12,666 INFO L225 Difference]: With dead ends: 98151 [2021-11-20 05:34:12,666 INFO L226 Difference]: Without dead ends: 66109 [2021-11-20 05:34:12,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:34:12,749 INFO L933 BasicCegarLoop]: 787 mSDtfsCounter, 1517 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 693 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1535 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 1937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 693 IncrementalHoareTripleChecker+Valid, 1244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:34:12,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1535 Valid, 1726 Invalid, 1937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [693 Valid, 1244 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 05:34:12,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66109 states. [2021-11-20 05:34:16,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66109 to 65895. [2021-11-20 05:34:16,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65895 states, 55621 states have (on average 1.6141565236151814) internal successors, (89781), 55628 states have internal predecessors, (89781), 10245 states have call successors, (10245), 25 states have call predecessors, (10245), 28 states have return successors, (11388), 10241 states have call predecessors, (11388), 10242 states have call successors, (11388) [2021-11-20 05:34:17,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65895 states to 65895 states and 111414 transitions. [2021-11-20 05:34:17,025 INFO L78 Accepts]: Start accepts. Automaton has 65895 states and 111414 transitions. Word has length 140 [2021-11-20 05:34:17,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:34:17,025 INFO L470 AbstractCegarLoop]: Abstraction has 65895 states and 111414 transitions. [2021-11-20 05:34:17,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-20 05:34:17,026 INFO L276 IsEmpty]: Start isEmpty. Operand 65895 states and 111414 transitions. [2021-11-20 05:34:17,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-20 05:34:17,072 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:34:17,072 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-11-20 05:34:17,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-20 05:34:17,073 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:34:17,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:34:17,073 INFO L85 PathProgramCache]: Analyzing trace with hash -370702518, now seen corresponding path program 1 times [2021-11-20 05:34:17,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:34:17,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654046612] [2021-11-20 05:34:17,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:34:17,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:34:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:17,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:34:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:17,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:34:17,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:17,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:34:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:17,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:34:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:17,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:34:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:17,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 05:34:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:17,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-20 05:34:17,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:17,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-20 05:34:17,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:17,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-20 05:34:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:17,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-20 05:34:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:17,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-20 05:34:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:17,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-20 05:34:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:17,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-20 05:34:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:17,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-20 05:34:17,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:17,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-20 05:34:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:17,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-20 05:34:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:17,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-11-20 05:34:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:17,194 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-20 05:34:17,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:34:17,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654046612] [2021-11-20 05:34:17,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654046612] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:34:17,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:34:17,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 05:34:17,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019743944] [2021-11-20 05:34:17,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:34:17,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:34:17,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:34:17,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:34:17,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:34:17,196 INFO L87 Difference]: Start difference. First operand 65895 states and 111414 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-20 05:34:25,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:34:25,023 INFO L93 Difference]: Finished difference Result 123812 states and 212972 transitions. [2021-11-20 05:34:25,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:34:25,024 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2021-11-20 05:34:25,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:34:25,667 INFO L225 Difference]: With dead ends: 123812 [2021-11-20 05:34:25,668 INFO L226 Difference]: Without dead ends: 123597 [2021-11-20 05:34:25,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:34:25,709 INFO L933 BasicCegarLoop]: 782 mSDtfsCounter, 1519 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 688 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 1941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 688 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-20 05:34:25,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1537 Valid, 1719 Invalid, 1941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [688 Valid, 1253 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-20 05:34:25,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123597 states. [2021-11-20 05:34:35,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123597 to 123383. [2021-11-20 05:34:35,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123383 states, 104741 states have (on average 1.609045168558635) internal successors, (168533), 104748 states have internal predecessors, (168533), 18613 states have call successors, (18613), 25 states have call predecessors, (18613), 28 states have return successors, (20802), 18609 states have call predecessors, (20802), 18610 states have call successors, (20802) [2021-11-20 05:34:36,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123383 states to 123383 states and 207948 transitions. [2021-11-20 05:34:36,380 INFO L78 Accepts]: Start accepts. Automaton has 123383 states and 207948 transitions. Word has length 160 [2021-11-20 05:34:36,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:34:36,381 INFO L470 AbstractCegarLoop]: Abstraction has 123383 states and 207948 transitions. [2021-11-20 05:34:36,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-20 05:34:36,381 INFO L276 IsEmpty]: Start isEmpty. Operand 123383 states and 207948 transitions. [2021-11-20 05:34:36,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-20 05:34:36,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:34:36,457 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-11-20 05:34:36,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-20 05:34:36,458 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:34:36,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:34:36,458 INFO L85 PathProgramCache]: Analyzing trace with hash -651476235, now seen corresponding path program 1 times [2021-11-20 05:34:36,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:34:36,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556215677] [2021-11-20 05:34:36,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:34:36,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:34:36,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:36,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:34:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:36,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:34:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:36,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:34:36,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:36,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-20 05:34:36,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:36,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 05:34:36,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:36,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 05:34:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:36,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-20 05:34:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:36,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 05:34:36,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:36,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-20 05:34:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:36,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-20 05:34:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:36,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-20 05:34:36,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:36,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-20 05:34:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:36,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-20 05:34:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:36,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-20 05:34:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:36,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-20 05:34:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:36,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-20 05:34:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:36,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-20 05:34:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:34:36,668 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-20 05:34:36,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:34:36,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556215677] [2021-11-20 05:34:36,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556215677] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:34:36,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:34:36,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 05:34:36,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700920011] [2021-11-20 05:34:36,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:34:36,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 05:34:36,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:34:36,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 05:34:36,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:34:36,671 INFO L87 Difference]: Start difference. First operand 123383 states and 207948 transitions. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (21), 7 states have call predecessors, (21), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17)