./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_productSimulator.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_1a282a94-fc95-45b3-8460-08669a4476f2/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a282a94-fc95-45b3-8460-08669a4476f2/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_1a282a94-fc95-45b3-8460-08669a4476f2/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a282a94-fc95-45b3-8460-08669a4476f2/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a282a94-fc95-45b3-8460-08669a4476f2/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_1a282a94-fc95-45b3-8460-08669a4476f2/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 1b548755c8e9cfcfe9ed8b47fb1ac823ac6821056e7770bffa975fdbf413b243 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:19:46,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:19:46,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:19:46,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:19:46,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:19:46,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:19:46,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:19:46,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:19:46,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:19:46,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:19:46,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:19:46,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:19:46,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:19:46,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:19:46,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:19:46,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:19:46,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:19:46,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:19:46,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:19:46,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:19:46,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:19:46,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:19:46,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:19:46,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:19:46,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:19:46,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:19:46,454 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:19:46,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:19:46,455 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:19:46,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:19:46,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:19:46,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:19:46,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:19:46,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:19:46,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:19:46,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:19:46,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:19:46,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:19:46,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:19:46,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:19:46,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:19:46,466 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a282a94-fc95-45b3-8460-08669a4476f2/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 07:19:46,491 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:19:46,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:19:46,492 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:19:46,492 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:19:46,493 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:19:46,494 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:19:46,494 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:19:46,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:19:46,495 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:19:46,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:19:46,496 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:19:46,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:19:46,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:19:46,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:19:46,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:19:46,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:19:46,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:19:46,498 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:19:46,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:19:46,499 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:19:46,499 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:19:46,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:19:46,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:19:46,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:19:46,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:19:46,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:19:46,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:19:46,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:19:46,501 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:19:46,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:19:46,502 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:19:46,502 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:19:46,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:19:46,502 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:19:46,503 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_1a282a94-fc95-45b3-8460-08669a4476f2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a282a94-fc95-45b3-8460-08669a4476f2/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b548755c8e9cfcfe9ed8b47fb1ac823ac6821056e7770bffa975fdbf413b243 [2021-11-20 07:19:46,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:19:46,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:19:46,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:19:46,776 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:19:46,777 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:19:46,778 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a282a94-fc95-45b3-8460-08669a4476f2/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c [2021-11-20 07:19:46,846 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a282a94-fc95-45b3-8460-08669a4476f2/bin/uautomizer-DQz5hQGWxF/data/fb75330c1/fc9488b84b7c44c2a3b7e49029825d3a/FLAG48c3e444f [2021-11-20 07:19:47,533 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:19:47,534 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a282a94-fc95-45b3-8460-08669a4476f2/sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c [2021-11-20 07:19:47,562 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a282a94-fc95-45b3-8460-08669a4476f2/bin/uautomizer-DQz5hQGWxF/data/fb75330c1/fc9488b84b7c44c2a3b7e49029825d3a/FLAG48c3e444f [2021-11-20 07:19:47,729 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a282a94-fc95-45b3-8460-08669a4476f2/bin/uautomizer-DQz5hQGWxF/data/fb75330c1/fc9488b84b7c44c2a3b7e49029825d3a [2021-11-20 07:19:47,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:19:47,734 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:19:47,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:19:47,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:19:47,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:19:47,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:19:47" (1/1) ... [2021-11-20 07:19:47,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f9b001a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:19:47, skipping insertion in model container [2021-11-20 07:19:47,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:19:47" (1/1) ... [2021-11-20 07:19:47,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:19:47,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:19:48,289 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_1a282a94-fc95-45b3-8460-08669a4476f2/sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c[14867,14880] [2021-11-20 07:19:48,581 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:19:48,593 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:19:48,668 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_1a282a94-fc95-45b3-8460-08669a4476f2/sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c[14867,14880] [2021-11-20 07:19:48,782 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:19:48,830 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:19:48,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:19:48 WrapperNode [2021-11-20 07:19:48,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:19:48,832 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:19:48,833 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:19:48,833 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:19:48,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:19:48" (1/1) ... [2021-11-20 07:19:48,883 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:19:48" (1/1) ... [2021-11-20 07:19:48,987 INFO L137 Inliner]: procedures = 151, calls = 282, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1303 [2021-11-20 07:19:48,988 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:19:48,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:19:48,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:19:48,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:19:48,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:19:48" (1/1) ... [2021-11-20 07:19:48,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:19:48" (1/1) ... [2021-11-20 07:19:49,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:19:48" (1/1) ... [2021-11-20 07:19:49,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:19:48" (1/1) ... [2021-11-20 07:19:49,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:19:48" (1/1) ... [2021-11-20 07:19:49,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:19:48" (1/1) ... [2021-11-20 07:19:49,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:19:48" (1/1) ... [2021-11-20 07:19:49,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:19:49,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:19:49,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:19:49,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:19:49,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:19:48" (1/1) ... [2021-11-20 07:19:49,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:19:49,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a282a94-fc95-45b3-8460-08669a4476f2/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:19:49,161 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a282a94-fc95-45b3-8460-08669a4476f2/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:19:49,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a282a94-fc95-45b3-8460-08669a4476f2/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:19:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-20 07:19:49,202 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-20 07:19:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2021-11-20 07:19:49,202 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2021-11-20 07:19:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2021-11-20 07:19:49,203 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2021-11-20 07:19:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-20 07:19:49,203 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-20 07:19:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-20 07:19:49,203 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-20 07:19:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-20 07:19:49,203 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-20 07:19:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-20 07:19:49,204 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-20 07:19:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2021-11-20 07:19:49,204 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2021-11-20 07:19:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-20 07:19:49,204 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-20 07:19:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2021-11-20 07:19:49,205 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2021-11-20 07:19:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-20 07:19:49,205 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-20 07:19:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-20 07:19:49,205 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-20 07:19:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-20 07:19:49,205 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-20 07:19:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2021-11-20 07:19:49,206 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2021-11-20 07:19:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2021-11-20 07:19:49,206 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2021-11-20 07:19:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-20 07:19:49,206 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-20 07:19:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-20 07:19:49,206 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-20 07:19:49,206 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-20 07:19:49,207 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-20 07:19:49,207 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-20 07:19:49,207 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2021-11-20 07:19:49,207 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2021-11-20 07:19:49,207 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-20 07:19:49,207 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-20 07:19:49,207 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-11-20 07:19:49,208 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-11-20 07:19:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-20 07:19:49,208 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-20 07:19:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2021-11-20 07:19:49,208 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2021-11-20 07:19:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:19:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-20 07:19:49,209 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-20 07:19:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-20 07:19:49,209 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-20 07:19:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2021-11-20 07:19:49,209 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2021-11-20 07:19:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2021-11-20 07:19:49,209 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2021-11-20 07:19:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2021-11-20 07:19:49,210 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2021-11-20 07:19:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-20 07:19:49,210 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-20 07:19:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-20 07:19:49,210 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-20 07:19:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-20 07:19:49,211 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-20 07:19:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-20 07:19:49,211 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-20 07:19:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-20 07:19:49,211 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-20 07:19:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-20 07:19:49,211 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-20 07:19:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-20 07:19:49,212 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-20 07:19:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2021-11-20 07:19:49,212 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2021-11-20 07:19:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2021-11-20 07:19:49,212 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2021-11-20 07:19:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-20 07:19:49,212 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-20 07:19:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-20 07:19:49,213 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-20 07:19:49,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:19:49,213 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-20 07:19:49,213 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-20 07:19:49,213 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2021-11-20 07:19:49,213 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2021-11-20 07:19:49,214 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-11-20 07:19:49,214 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-11-20 07:19:49,214 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-20 07:19:49,214 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-20 07:19:49,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:19:49,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:19:49,489 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:19:49,493 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:19:50,646 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:19:50,662 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:19:50,663 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 07:19:50,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:19:50 BoogieIcfgContainer [2021-11-20 07:19:50,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:19:50,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:19:50,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:19:50,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:19:50,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:19:47" (1/3) ... [2021-11-20 07:19:50,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b129ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:19:50, skipping insertion in model container [2021-11-20 07:19:50,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:19:48" (2/3) ... [2021-11-20 07:19:50,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b129ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:19:50, skipping insertion in model container [2021-11-20 07:19:50,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:19:50" (3/3) ... [2021-11-20 07:19:50,678 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec0_productSimulator.cil.c [2021-11-20 07:19:50,684 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:19:50,684 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 07:19:50,750 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:19:50,759 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 07:19:50,759 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 07:19:50,809 INFO L276 IsEmpty]: Start isEmpty. Operand has 600 states, 446 states have (on average 1.515695067264574) internal successors, (676), 466 states have internal predecessors, (676), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2021-11-20 07:19:50,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-20 07:19:50,849 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:19:50,850 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 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, 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 07:19:50,851 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:19:50,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:19:50,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1286037596, now seen corresponding path program 1 times [2021-11-20 07:19:50,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:19:50,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517379072] [2021-11-20 07:19:50,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:19:50,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:19:51,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:51,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 07:19:51,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:51,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 07:19:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:51,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 07:19:51,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:51,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:19:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:51,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:19:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:51,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-20 07:19:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:51,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:19:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:51,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 07:19:51,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:51,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 07:19:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:51,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:19:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:51,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-20 07:19:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:51,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:19:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:51,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-20 07:19:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:51,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:19:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:51,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 07:19:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:51,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-20 07:19:51,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:51,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-20 07:19:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:51,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-20 07:19:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:51,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-20 07:19:51,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:51,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:19:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:51,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-20 07:19:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:51,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-20 07:19:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:51,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:19:51,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:51,649 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-20 07:19:51,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:19:51,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517379072] [2021-11-20 07:19:51,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517379072] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:19:51,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:19:51,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 07:19:51,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280537904] [2021-11-20 07:19:51,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:19:51,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:19:51,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:19:51,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:19:51,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:19:51,691 INFO L87 Difference]: Start difference. First operand has 600 states, 446 states have (on average 1.515695067264574) internal successors, (676), 466 states have internal predecessors, (676), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-20 07:19:53,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:19:53,720 INFO L93 Difference]: Finished difference Result 1142 states and 1756 transitions. [2021-11-20 07:19:53,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:19:53,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 164 [2021-11-20 07:19:53,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:19:53,762 INFO L225 Difference]: With dead ends: 1142 [2021-11-20 07:19:53,763 INFO L226 Difference]: Without dead ends: 804 [2021-11-20 07:19:53,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-20 07:19:53,780 INFO L933 BasicCegarLoop]: 909 mSDtfsCounter, 1834 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 873 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1842 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 873 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:19:53,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1842 Valid, 1635 Invalid, 1526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [873 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-20 07:19:53,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2021-11-20 07:19:54,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 593. [2021-11-20 07:19:54,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 440 states have (on average 1.5113636363636365) internal successors, (665), 459 states have internal predecessors, (665), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2021-11-20 07:19:54,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 882 transitions. [2021-11-20 07:19:54,039 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 882 transitions. Word has length 164 [2021-11-20 07:19:54,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:19:54,040 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 882 transitions. [2021-11-20 07:19:54,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-20 07:19:54,041 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 882 transitions. [2021-11-20 07:19:54,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-20 07:19:54,050 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:19:54,051 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 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, 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 07:19:54,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 07:19:54,052 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:19:54,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:19:54,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1632157272, now seen corresponding path program 1 times [2021-11-20 07:19:54,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:19:54,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051434623] [2021-11-20 07:19:54,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:19:54,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:19:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:54,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 07:19:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:54,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 07:19:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:54,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 07:19:54,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:54,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:19:54,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:54,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:19:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:54,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-20 07:19:54,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:54,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:19:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:54,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 07:19:54,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:54,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 07:19:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:54,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:19:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:54,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-20 07:19:54,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:54,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:19:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:54,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-20 07:19:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:54,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:19:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:54,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-20 07:19:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:54,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-20 07:19:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:54,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-20 07:19:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:54,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-20 07:19:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:54,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-20 07:19:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:54,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:19:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:54,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-20 07:19:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:54,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-20 07:19:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:54,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:19:54,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:54,412 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-20 07:19:54,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:19:54,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051434623] [2021-11-20 07:19:54,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051434623] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:19:54,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:19:54,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 07:19:54,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708582379] [2021-11-20 07:19:54,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:19:54,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 07:19:54,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:19:54,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 07:19:54,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:19:54,420 INFO L87 Difference]: Start difference. First operand 593 states and 882 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-20 07:19:57,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:19:57,955 INFO L93 Difference]: Finished difference Result 1361 states and 2075 transitions. [2021-11-20 07:19:57,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 07:19:57,956 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 165 [2021-11-20 07:19:57,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:19:57,964 INFO L225 Difference]: With dead ends: 1361 [2021-11-20 07:19:57,964 INFO L226 Difference]: Without dead ends: 804 [2021-11-20 07:19:57,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-11-20 07:19:57,968 INFO L933 BasicCegarLoop]: 905 mSDtfsCounter, 1410 mSDsluCounter, 2141 mSDsCounter, 0 mSdLazyCounter, 2794 mSolverCounterSat, 712 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1419 SdHoareTripleChecker+Valid, 3046 SdHoareTripleChecker+Invalid, 3506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 712 IncrementalHoareTripleChecker+Valid, 2794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:19:57,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1419 Valid, 3046 Invalid, 3506 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [712 Valid, 2794 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-20 07:19:57,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2021-11-20 07:19:58,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 593. [2021-11-20 07:19:58,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 440 states have (on average 1.4954545454545454) internal successors, (658), 459 states have internal predecessors, (658), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2021-11-20 07:19:58,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 875 transitions. [2021-11-20 07:19:58,041 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 875 transitions. Word has length 165 [2021-11-20 07:19:58,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:19:58,043 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 875 transitions. [2021-11-20 07:19:58,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-20 07:19:58,044 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 875 transitions. [2021-11-20 07:19:58,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-20 07:19:58,050 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:19:58,050 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:19:58,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 07:19:58,051 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:19:58,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:19:58,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1056666388, now seen corresponding path program 1 times [2021-11-20 07:19:58,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:19:58,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341589303] [2021-11-20 07:19:58,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:19:58,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:19:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:58,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 07:19:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:58,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 07:19:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:58,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 07:19:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:58,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:19:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:58,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:19:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:58,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-20 07:19:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:58,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:19:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:58,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 07:19:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:58,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-20 07:19:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:58,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:19:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:58,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:19:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:58,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:19:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:58,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-20 07:19:58,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:58,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:19:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:58,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-20 07:19:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:58,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 07:19:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:58,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-20 07:19:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:58,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-20 07:19:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:58,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-20 07:19:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:58,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-20 07:19:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:58,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:19:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:58,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-20 07:19:58,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:58,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:19:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:58,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-20 07:19:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:58,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-20 07:19:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:58,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:19:58,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:58,382 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-20 07:19:58,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:19:58,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341589303] [2021-11-20 07:19:58,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341589303] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:19:58,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052399183] [2021-11-20 07:19:58,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:19:58,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:19:58,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a282a94-fc95-45b3-8460-08669a4476f2/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:19:58,386 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a282a94-fc95-45b3-8460-08669a4476f2/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:19:58,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a282a94-fc95-45b3-8460-08669a4476f2/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 07:19:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:58,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 1570 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:19:58,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:19:59,281 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-20 07:19:59,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:19:59,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052399183] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:19:59,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:19:59,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2021-11-20 07:19:59,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096061778] [2021-11-20 07:19:59,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:19:59,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:19:59,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:19:59,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:19:59,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-11-20 07:19:59,296 INFO L87 Difference]: Start difference. First operand 593 states and 875 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-20 07:19:59,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:19:59,366 INFO L93 Difference]: Finished difference Result 921 states and 1333 transitions. [2021-11-20 07:19:59,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:19:59,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 190 [2021-11-20 07:19:59,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:19:59,376 INFO L225 Difference]: With dead ends: 921 [2021-11-20 07:19:59,376 INFO L226 Difference]: Without dead ends: 596 [2021-11-20 07:19:59,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-11-20 07:19:59,383 INFO L933 BasicCegarLoop]: 873 mSDtfsCounter, 1 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1744 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 07:19:59,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1744 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:19:59,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-11-20 07:19:59,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 595. [2021-11-20 07:19:59,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 442 states have (on average 1.493212669683258) internal successors, (660), 461 states have internal predecessors, (660), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2021-11-20 07:19:59,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 877 transitions. [2021-11-20 07:19:59,454 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 877 transitions. Word has length 190 [2021-11-20 07:19:59,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:19:59,457 INFO L470 AbstractCegarLoop]: Abstraction has 595 states and 877 transitions. [2021-11-20 07:19:59,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-20 07:19:59,458 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 877 transitions. [2021-11-20 07:19:59,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-20 07:19:59,463 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:19:59,468 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:19:59,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a282a94-fc95-45b3-8460-08669a4476f2/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:19:59,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a282a94-fc95-45b3-8460-08669a4476f2/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:19:59,692 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:19:59,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:19:59,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1445672682, now seen corresponding path program 1 times [2021-11-20 07:19:59,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:19:59,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739155376] [2021-11-20 07:19:59,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:19:59,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:19:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:59,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 07:19:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:59,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 07:19:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:59,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 07:19:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:59,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:19:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:59,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:19:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:59,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-20 07:19:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:59,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:19:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:59,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 07:19:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:59,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-20 07:19:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:59,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:19:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:59,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:19:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:59,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:19:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:59,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-20 07:19:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:59,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:19:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:59,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-20 07:19:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:59,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-20 07:19:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:59,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-20 07:19:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:19:59,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-20 07:19:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:00,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-20 07:20:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:00,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:20:00,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:00,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-20 07:20:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:00,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-11-20 07:20:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:00,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:20:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:00,045 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-20 07:20:00,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:20:00,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739155376] [2021-11-20 07:20:00,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739155376] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:20:00,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933229861] [2021-11-20 07:20:00,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:20:00,047 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:20:00,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a282a94-fc95-45b3-8460-08669a4476f2/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:20:00,048 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a282a94-fc95-45b3-8460-08669a4476f2/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:20:00,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a282a94-fc95-45b3-8460-08669a4476f2/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 07:20:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:00,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 1503 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 07:20:00,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:20:00,899 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-20 07:20:00,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:20:00,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933229861] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:20:00,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:20:00,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2021-11-20 07:20:00,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75719363] [2021-11-20 07:20:00,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:20:00,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:20:00,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:20:00,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:20:00,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-11-20 07:20:00,902 INFO L87 Difference]: Start difference. First operand 595 states and 877 transitions. Second operand has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 7 states have internal predecessors, (103), 4 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-20 07:20:01,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:20:01,037 INFO L93 Difference]: Finished difference Result 1136 states and 1682 transitions. [2021-11-20 07:20:01,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:20:01,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 7 states have internal predecessors, (103), 4 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 177 [2021-11-20 07:20:01,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:20:01,043 INFO L225 Difference]: With dead ends: 1136 [2021-11-20 07:20:01,044 INFO L226 Difference]: Without dead ends: 599 [2021-11-20 07:20:01,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2021-11-20 07:20:01,047 INFO L933 BasicCegarLoop]: 863 mSDtfsCounter, 196 mSDsluCounter, 4090 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 4953 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:20:01,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 4953 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:20:01,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-11-20 07:20:01,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2021-11-20 07:20:01,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 444 states have (on average 1.490990990990991) internal successors, (662), 464 states have internal predecessors, (662), 109 states have call successors, (109), 43 states have call predecessors, (109), 45 states have return successors, (112), 108 states have call predecessors, (112), 108 states have call successors, (112) [2021-11-20 07:20:01,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 883 transitions. [2021-11-20 07:20:01,099 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 883 transitions. Word has length 177 [2021-11-20 07:20:01,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:20:01,099 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 883 transitions. [2021-11-20 07:20:01,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 7 states have internal predecessors, (103), 4 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-20 07:20:01,100 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 883 transitions. [2021-11-20 07:20:01,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-20 07:20:01,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:20:01,106 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:20:01,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a282a94-fc95-45b3-8460-08669a4476f2/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:20:01,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a282a94-fc95-45b3-8460-08669a4476f2/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:20:01,320 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:20:01,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:20:01,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1490272166, now seen corresponding path program 1 times [2021-11-20 07:20:01,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:20:01,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566014854] [2021-11-20 07:20:01,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:20:01,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:20:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:01,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 07:20:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:01,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 07:20:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:01,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 07:20:01,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:01,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:20:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:01,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:20:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:01,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-20 07:20:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:01,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:20:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:01,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 07:20:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:01,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-20 07:20:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:01,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:01,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:20:01,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:01,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:01,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:01,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 07:20:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:01,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:01,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-20 07:20:01,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:01,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-20 07:20:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:01,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-20 07:20:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:01,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-20 07:20:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:01,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-20 07:20:01,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:01,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:20:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:01,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-20 07:20:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:01,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-11-20 07:20:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:01,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:20:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:01,641 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-20 07:20:01,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:20:01,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566014854] [2021-11-20 07:20:01,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566014854] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:20:01,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:20:01,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:20:01,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869663957] [2021-11-20 07:20:01,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:20:01,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:20:01,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:20:01,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:20:01,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:20:01,645 INFO L87 Difference]: Start difference. First operand 599 states and 883 transitions. Second operand has 11 states, 10 states have (on average 10.2) internal successors, (102), 7 states have internal predecessors, (102), 4 states have call successors, (30), 6 states have call predecessors, (30), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-20 07:20:06,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:20:06,229 INFO L93 Difference]: Finished difference Result 1333 states and 2029 transitions. [2021-11-20 07:20:06,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 07:20:06,230 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.2) internal successors, (102), 7 states have internal predecessors, (102), 4 states have call successors, (30), 6 states have call predecessors, (30), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 178 [2021-11-20 07:20:06,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:20:06,241 INFO L225 Difference]: With dead ends: 1333 [2021-11-20 07:20:06,241 INFO L226 Difference]: Without dead ends: 812 [2021-11-20 07:20:06,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2021-11-20 07:20:06,246 INFO L933 BasicCegarLoop]: 888 mSDtfsCounter, 1583 mSDsluCounter, 2674 mSDsCounter, 0 mSdLazyCounter, 4216 mSolverCounterSat, 704 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1613 SdHoareTripleChecker+Valid, 3562 SdHoareTripleChecker+Invalid, 4920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 704 IncrementalHoareTripleChecker+Valid, 4216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:20:06,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1613 Valid, 3562 Invalid, 4920 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [704 Valid, 4216 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-11-20 07:20:06,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2021-11-20 07:20:06,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 601. [2021-11-20 07:20:06,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 445 states have (on average 1.489887640449438) internal successors, (663), 465 states have internal predecessors, (663), 109 states have call successors, (109), 43 states have call predecessors, (109), 46 states have return successors, (113), 109 states have call predecessors, (113), 108 states have call successors, (113) [2021-11-20 07:20:06,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 885 transitions. [2021-11-20 07:20:06,310 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 885 transitions. Word has length 178 [2021-11-20 07:20:06,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:20:06,312 INFO L470 AbstractCegarLoop]: Abstraction has 601 states and 885 transitions. [2021-11-20 07:20:06,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.2) internal successors, (102), 7 states have internal predecessors, (102), 4 states have call successors, (30), 6 states have call predecessors, (30), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-20 07:20:06,313 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 885 transitions. [2021-11-20 07:20:06,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-20 07:20:06,319 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:20:06,320 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:20:06,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 07:20:06,320 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:20:06,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:20:06,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1237956627, now seen corresponding path program 1 times [2021-11-20 07:20:06,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:20:06,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588023234] [2021-11-20 07:20:06,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:20:06,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:20:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:06,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 07:20:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:06,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 07:20:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:06,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 07:20:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:06,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:20:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:06,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:20:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:06,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-20 07:20:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:06,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:20:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:06,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 07:20:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:06,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-20 07:20:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:06,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:06,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:06,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:20:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:06,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:06,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 07:20:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:06,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:06,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-20 07:20:06,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:06,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-20 07:20:06,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:06,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-20 07:20:06,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:06,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-11-20 07:20:06,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:06,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-20 07:20:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:06,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:20:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:06,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-20 07:20:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:06,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:20:06,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:06,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-11-20 07:20:06,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:06,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-11-20 07:20:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:06,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:20:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:06,617 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-11-20 07:20:06,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:20:06,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588023234] [2021-11-20 07:20:06,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588023234] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:20:06,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:20:06,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 07:20:06,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812917661] [2021-11-20 07:20:06,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:20:06,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:20:06,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:20:06,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:20:06,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:20:06,622 INFO L87 Difference]: Start difference. First operand 601 states and 885 transitions. Second operand has 11 states, 10 states have (on average 10.6) internal successors, (106), 7 states have internal predecessors, (106), 4 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2021-11-20 07:20:10,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:20:10,249 INFO L93 Difference]: Finished difference Result 1337 states and 2035 transitions. [2021-11-20 07:20:10,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 07:20:10,249 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.6) internal successors, (106), 7 states have internal predecessors, (106), 4 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) Word has length 192 [2021-11-20 07:20:10,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:20:10,258 INFO L225 Difference]: With dead ends: 1337 [2021-11-20 07:20:10,258 INFO L226 Difference]: Without dead ends: 816 [2021-11-20 07:20:10,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2021-11-20 07:20:10,263 INFO L933 BasicCegarLoop]: 892 mSDtfsCounter, 1990 mSDsluCounter, 2457 mSDsCounter, 0 mSdLazyCounter, 4078 mSolverCounterSat, 880 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2019 SdHoareTripleChecker+Valid, 3349 SdHoareTripleChecker+Invalid, 4958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 880 IncrementalHoareTripleChecker+Valid, 4078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:20:10,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2019 Valid, 3349 Invalid, 4958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [880 Valid, 4078 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-20 07:20:10,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2021-11-20 07:20:10,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 603. [2021-11-20 07:20:10,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 446 states have (on average 1.4887892376681615) internal successors, (664), 467 states have internal predecessors, (664), 109 states have call successors, (109), 43 states have call predecessors, (109), 47 states have return successors, (116), 109 states have call predecessors, (116), 108 states have call successors, (116) [2021-11-20 07:20:10,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 889 transitions. [2021-11-20 07:20:10,327 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 889 transitions. Word has length 192 [2021-11-20 07:20:10,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:20:10,328 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 889 transitions. [2021-11-20 07:20:10,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.6) internal successors, (106), 7 states have internal predecessors, (106), 4 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2021-11-20 07:20:10,328 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 889 transitions. [2021-11-20 07:20:10,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-20 07:20:10,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:20:10,335 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:20:10,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 07:20:10,335 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:20:10,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:20:10,336 INFO L85 PathProgramCache]: Analyzing trace with hash -387088063, now seen corresponding path program 1 times [2021-11-20 07:20:10,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:20:10,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791980331] [2021-11-20 07:20:10,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:20:10,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:20:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:10,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 07:20:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:10,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 07:20:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:10,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 07:20:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:10,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:20:10,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:10,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:20:10,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:10,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-20 07:20:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:10,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:20:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:10,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 07:20:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:10,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-20 07:20:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:10,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:10,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:20:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:10,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:10,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 07:20:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:10,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:10,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-20 07:20:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:10,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-20 07:20:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:10,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-20 07:20:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:10,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-20 07:20:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:10,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-11-20 07:20:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:10,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:20:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:10,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-11-20 07:20:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:10,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-20 07:20:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:10,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:20:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:10,564 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-20 07:20:10,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:20:10,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791980331] [2021-11-20 07:20:10,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791980331] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:20:10,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542913377] [2021-11-20 07:20:10,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:20:10,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:20:10,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a282a94-fc95-45b3-8460-08669a4476f2/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:20:10,567 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a282a94-fc95-45b3-8460-08669a4476f2/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:20:10,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a282a94-fc95-45b3-8460-08669a4476f2/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 07:20:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:10,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 1506 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 07:20:10,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:20:11,304 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-20 07:20:11,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:20:11,753 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-20 07:20:11,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542913377] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:20:11,754 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:20:11,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2021-11-20 07:20:11,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453559869] [2021-11-20 07:20:11,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:20:11,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:20:11,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:20:11,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:20:11,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:20:11,758 INFO L87 Difference]: Start difference. First operand 603 states and 889 transitions. Second operand has 11 states, 11 states have (on average 13.090909090909092) internal successors, (144), 7 states have internal predecessors, (144), 2 states have call successors, (50), 6 states have call predecessors, (50), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-20 07:20:15,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:20:15,075 INFO L93 Difference]: Finished difference Result 1520 states and 2370 transitions. [2021-11-20 07:20:15,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 07:20:15,087 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.090909090909092) internal successors, (144), 7 states have internal predecessors, (144), 2 states have call successors, (50), 6 states have call predecessors, (50), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 180 [2021-11-20 07:20:15,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:20:15,096 INFO L225 Difference]: With dead ends: 1520 [2021-11-20 07:20:15,096 INFO L226 Difference]: Without dead ends: 1195 [2021-11-20 07:20:15,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2021-11-20 07:20:15,099 INFO L933 BasicCegarLoop]: 978 mSDtfsCounter, 2508 mSDsluCounter, 2372 mSDsCounter, 0 mSdLazyCounter, 2943 mSolverCounterSat, 1103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2573 SdHoareTripleChecker+Valid, 3350 SdHoareTripleChecker+Invalid, 4046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1103 IncrementalHoareTripleChecker+Valid, 2943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:20:15,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2573 Valid, 3350 Invalid, 4046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1103 Valid, 2943 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-20 07:20:15,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2021-11-20 07:20:15,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 960. [2021-11-20 07:20:15,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 752 states have (on average 1.565159574468085) internal successors, (1177), 779 states have internal predecessors, (1177), 160 states have call successors, (160), 43 states have call predecessors, (160), 47 states have return successors, (167), 160 states have call predecessors, (167), 159 states have call successors, (167) [2021-11-20 07:20:15,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1504 transitions. [2021-11-20 07:20:15,175 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1504 transitions. Word has length 180 [2021-11-20 07:20:15,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:20:15,176 INFO L470 AbstractCegarLoop]: Abstraction has 960 states and 1504 transitions. [2021-11-20 07:20:15,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.090909090909092) internal successors, (144), 7 states have internal predecessors, (144), 2 states have call successors, (50), 6 states have call predecessors, (50), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-20 07:20:15,176 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1504 transitions. [2021-11-20 07:20:15,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-20 07:20:15,184 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:20:15,184 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:20:15,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a282a94-fc95-45b3-8460-08669a4476f2/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-20 07:20:15,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a282a94-fc95-45b3-8460-08669a4476f2/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:20:15,401 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:20:15,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:20:15,401 INFO L85 PathProgramCache]: Analyzing trace with hash 405802502, now seen corresponding path program 1 times [2021-11-20 07:20:15,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:20:15,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875936598] [2021-11-20 07:20:15,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:20:15,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:20:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:15,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 07:20:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:15,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 07:20:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:15,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 07:20:15,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:15,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:20:15,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:15,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:20:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:15,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-20 07:20:15,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:15,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:20:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:15,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 07:20:15,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:15,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-20 07:20:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:15,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:15,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:20:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:15,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:15,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:15,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 07:20:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:15,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:15,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-20 07:20:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:15,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-20 07:20:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:15,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-11-20 07:20:15,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:15,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-11-20 07:20:15,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:15,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-20 07:20:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:15,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:20:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:15,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-11-20 07:20:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:15,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-11-20 07:20:15,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:15,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:20:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:15,553 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-20 07:20:15,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:20:15,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875936598] [2021-11-20 07:20:15,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875936598] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:20:15,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:20:15,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:20:15,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981308048] [2021-11-20 07:20:15,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:20:15,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:20:15,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:20:15,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:20:15,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:20:15,556 INFO L87 Difference]: Start difference. First operand 960 states and 1504 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-20 07:20:18,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:20:18,246 INFO L93 Difference]: Finished difference Result 2294 states and 3679 transitions. [2021-11-20 07:20:18,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 07:20:18,246 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 185 [2021-11-20 07:20:18,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:20:18,259 INFO L225 Difference]: With dead ends: 2294 [2021-11-20 07:20:18,260 INFO L226 Difference]: Without dead ends: 1451 [2021-11-20 07:20:18,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:20:18,265 INFO L933 BasicCegarLoop]: 928 mSDtfsCounter, 1975 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 1395 mSolverCounterSat, 935 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1999 SdHoareTripleChecker+Valid, 1982 SdHoareTripleChecker+Invalid, 2330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 935 IncrementalHoareTripleChecker+Valid, 1395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:20:18,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1999 Valid, 1982 Invalid, 2330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [935 Valid, 1395 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-20 07:20:18,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2021-11-20 07:20:18,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 1232. [2021-11-20 07:20:18,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 982 states have (on average 1.579429735234216) internal successors, (1551), 1015 states have internal predecessors, (1551), 202 states have call successors, (202), 43 states have call predecessors, (202), 47 states have return successors, (209), 202 states have call predecessors, (209), 201 states have call successors, (209) [2021-11-20 07:20:18,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1962 transitions. [2021-11-20 07:20:18,354 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1962 transitions. Word has length 185 [2021-11-20 07:20:18,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:20:18,355 INFO L470 AbstractCegarLoop]: Abstraction has 1232 states and 1962 transitions. [2021-11-20 07:20:18,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-20 07:20:18,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1962 transitions. [2021-11-20 07:20:18,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-20 07:20:18,366 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:20:18,367 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:20:18,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 07:20:18,367 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:20:18,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:20:18,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1500129125, now seen corresponding path program 1 times [2021-11-20 07:20:18,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:20:18,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957642684] [2021-11-20 07:20:18,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:20:18,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:20:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:18,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 07:20:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:18,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 07:20:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:18,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 07:20:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:18,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:20:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:18,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:20:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:18,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-20 07:20:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:18,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:20:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:18,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 07:20:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:18,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-20 07:20:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:18,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:18,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:18,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:20:18,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:18,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:18,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 07:20:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:18,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:18,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-20 07:20:18,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:18,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-20 07:20:18,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:18,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-20 07:20:18,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:18,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-20 07:20:18,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:18,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-11-20 07:20:18,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:18,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-20 07:20:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:18,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:20:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:18,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-11-20 07:20:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:18,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:20:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:18,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-20 07:20:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:18,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-20 07:20:18,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:18,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:20:18,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:18,583 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-20 07:20:18,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:20:18,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957642684] [2021-11-20 07:20:18,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957642684] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:20:18,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:20:18,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:20:18,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605370131] [2021-11-20 07:20:18,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:20:18,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:20:18,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:20:18,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:20:18,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:20:18,587 INFO L87 Difference]: Start difference. First operand 1232 states and 1962 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-20 07:20:20,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:20:20,814 INFO L93 Difference]: Finished difference Result 3045 states and 4958 transitions. [2021-11-20 07:20:20,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 07:20:20,814 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 206 [2021-11-20 07:20:20,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:20:20,829 INFO L225 Difference]: With dead ends: 3045 [2021-11-20 07:20:20,829 INFO L226 Difference]: Without dead ends: 1952 [2021-11-20 07:20:20,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:20:20,834 INFO L933 BasicCegarLoop]: 925 mSDtfsCounter, 1972 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 942 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 1998 SdHoareTripleChecker+Invalid, 2331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 942 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:20:20,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1997 Valid, 1998 Invalid, 2331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [942 Valid, 1389 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-20 07:20:20,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1952 states. [2021-11-20 07:20:20,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1952 to 1733. [2021-11-20 07:20:20,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1733 states, 1404 states have (on average 1.599002849002849) internal successors, (2245), 1447 states have internal predecessors, (2245), 281 states have call successors, (281), 43 states have call predecessors, (281), 47 states have return successors, (288), 281 states have call predecessors, (288), 280 states have call successors, (288) [2021-11-20 07:20:20,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2814 transitions. [2021-11-20 07:20:20,950 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2814 transitions. Word has length 206 [2021-11-20 07:20:20,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:20:20,950 INFO L470 AbstractCegarLoop]: Abstraction has 1733 states and 2814 transitions. [2021-11-20 07:20:20,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-20 07:20:20,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2814 transitions. [2021-11-20 07:20:20,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-20 07:20:20,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:20:20,963 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:20:20,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 07:20:20,964 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:20:20,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:20:20,964 INFO L85 PathProgramCache]: Analyzing trace with hash -699671876, now seen corresponding path program 1 times [2021-11-20 07:20:20,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:20:20,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795860980] [2021-11-20 07:20:20,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:20:20,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:20:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:21,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 07:20:21,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:21,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 07:20:21,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:21,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 07:20:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:21,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:20:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:21,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:20:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:21,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-20 07:20:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:21,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:20:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:21,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 07:20:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:21,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-20 07:20:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:21,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:21,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:20:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:21,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:21,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 07:20:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:21,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:21,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 07:20:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:21,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-20 07:20:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:21,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-20 07:20:21,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:21,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-20 07:20:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:21,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-20 07:20:21,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:21,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:20:21,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:21,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-20 07:20:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:21,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-11-20 07:20:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:21,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:20:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:21,163 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-20 07:20:21,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:20:21,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795860980] [2021-11-20 07:20:21,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795860980] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:20:21,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:20:21,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:20:21,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136696083] [2021-11-20 07:20:21,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:20:21,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:20:21,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:20:21,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:20:21,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:20:21,166 INFO L87 Difference]: Start difference. First operand 1733 states and 2814 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-20 07:20:23,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:20:23,357 INFO L93 Difference]: Finished difference Result 4292 states and 7083 transitions. [2021-11-20 07:20:23,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 07:20:23,358 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 187 [2021-11-20 07:20:23,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:20:23,377 INFO L225 Difference]: With dead ends: 4292 [2021-11-20 07:20:23,377 INFO L226 Difference]: Without dead ends: 2761 [2021-11-20 07:20:23,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:20:23,384 INFO L933 BasicCegarLoop]: 918 mSDtfsCounter, 1571 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1597 SdHoareTripleChecker+Valid, 2228 SdHoareTripleChecker+Invalid, 2256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 758 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:20:23,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1597 Valid, 2228 Invalid, 2256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [758 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-20 07:20:23,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2761 states. [2021-11-20 07:20:23,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2761 to 2542. [2021-11-20 07:20:23,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2542 states, 2094 states have (on average 1.6131805157593124) internal successors, (3378), 2153 states have internal predecessors, (3378), 400 states have call successors, (400), 43 states have call predecessors, (400), 47 states have return successors, (407), 400 states have call predecessors, (407), 399 states have call successors, (407) [2021-11-20 07:20:23,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2542 states to 2542 states and 4185 transitions. [2021-11-20 07:20:23,521 INFO L78 Accepts]: Start accepts. Automaton has 2542 states and 4185 transitions. Word has length 187 [2021-11-20 07:20:23,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:20:23,521 INFO L470 AbstractCegarLoop]: Abstraction has 2542 states and 4185 transitions. [2021-11-20 07:20:23,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-20 07:20:23,522 INFO L276 IsEmpty]: Start isEmpty. Operand 2542 states and 4185 transitions. [2021-11-20 07:20:23,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-20 07:20:23,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:20:23,540 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:20:23,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 07:20:23,540 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:20:23,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:20:23,541 INFO L85 PathProgramCache]: Analyzing trace with hash -331145442, now seen corresponding path program 1 times [2021-11-20 07:20:23,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:20:23,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690058066] [2021-11-20 07:20:23,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:20:23,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:20:23,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:23,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 07:20:23,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:23,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 07:20:23,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:23,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 07:20:23,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:23,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:20:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:23,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:20:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:23,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-20 07:20:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:23,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:20:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:23,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 07:20:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:23,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-20 07:20:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:23,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:23,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:20:23,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:23,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:23,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 07:20:23,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:23,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:23,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:23,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-20 07:20:23,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:23,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-20 07:20:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:23,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-11-20 07:20:23,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:23,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-20 07:20:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:23,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-20 07:20:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:23,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-20 07:20:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:23,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:20:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:23,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-20 07:20:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:23,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:20:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:23,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-11-20 07:20:23,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:23,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-11-20 07:20:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:23,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:20:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:23,698 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-20 07:20:23,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:20:23,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690058066] [2021-11-20 07:20:23,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690058066] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:20:23,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:20:23,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:20:23,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124758156] [2021-11-20 07:20:23,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:20:23,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:20:23,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:20:23,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:20:23,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:20:23,701 INFO L87 Difference]: Start difference. First operand 2542 states and 4185 transitions. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 3 states have internal predecessors, (118), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-20 07:20:26,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:20:26,173 INFO L93 Difference]: Finished difference Result 6191 states and 10315 transitions. [2021-11-20 07:20:26,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 07:20:26,175 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 3 states have internal predecessors, (118), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 208 [2021-11-20 07:20:26,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:20:26,205 INFO L225 Difference]: With dead ends: 6191 [2021-11-20 07:20:26,205 INFO L226 Difference]: Without dead ends: 4008 [2021-11-20 07:20:26,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:20:26,214 INFO L933 BasicCegarLoop]: 904 mSDtfsCounter, 1570 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 741 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1597 SdHoareTripleChecker+Valid, 2204 SdHoareTripleChecker+Invalid, 2287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 741 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:20:26,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1597 Valid, 2204 Invalid, 2287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [741 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-20 07:20:26,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4008 states. [2021-11-20 07:20:26,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4008 to 3789. [2021-11-20 07:20:26,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3789 states, 3179 states have (on average 1.6240956275558351) internal successors, (5163), 3264 states have internal predecessors, (5163), 562 states have call successors, (562), 43 states have call predecessors, (562), 47 states have return successors, (569), 562 states have call predecessors, (569), 561 states have call successors, (569) [2021-11-20 07:20:26,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3789 states to 3789 states and 6294 transitions. [2021-11-20 07:20:26,486 INFO L78 Accepts]: Start accepts. Automaton has 3789 states and 6294 transitions. Word has length 208 [2021-11-20 07:20:26,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:20:26,492 INFO L470 AbstractCegarLoop]: Abstraction has 3789 states and 6294 transitions. [2021-11-20 07:20:26,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 3 states have internal predecessors, (118), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-20 07:20:26,493 INFO L276 IsEmpty]: Start isEmpty. Operand 3789 states and 6294 transitions. [2021-11-20 07:20:26,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-11-20 07:20:26,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:20:26,525 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:20:26,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 07:20:26,525 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:20:26,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:20:26,526 INFO L85 PathProgramCache]: Analyzing trace with hash -421774476, now seen corresponding path program 1 times [2021-11-20 07:20:26,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:20:26,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213599538] [2021-11-20 07:20:26,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:20:26,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:20:26,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:26,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 07:20:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:26,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 07:20:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:26,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 07:20:26,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:26,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:20:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:26,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:20:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:26,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-20 07:20:26,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:26,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:20:26,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:26,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 07:20:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:26,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-20 07:20:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:26,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:26,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:20:26,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:26,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:26,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 07:20:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:26,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:26,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:26,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-20 07:20:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:26,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-20 07:20:26,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:26,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-20 07:20:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:26,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-20 07:20:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:26,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-11-20 07:20:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:26,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:20:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:26,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-11-20 07:20:26,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:26,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-20 07:20:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:26,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:20:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:26,711 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-20 07:20:26,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:20:26,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213599538] [2021-11-20 07:20:26,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213599538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:20:26,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:20:26,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:20:26,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504482589] [2021-11-20 07:20:26,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:20:26,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:20:26,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:20:26,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:20:26,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:20:26,715 INFO L87 Difference]: Start difference. First operand 3789 states and 6294 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-20 07:20:28,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:20:28,887 INFO L93 Difference]: Finished difference Result 9193 states and 15422 transitions. [2021-11-20 07:20:28,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 07:20:28,888 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 189 [2021-11-20 07:20:28,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:20:28,929 INFO L225 Difference]: With dead ends: 9193 [2021-11-20 07:20:28,929 INFO L226 Difference]: Without dead ends: 6022 [2021-11-20 07:20:28,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:20:28,940 INFO L933 BasicCegarLoop]: 926 mSDtfsCounter, 1982 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 956 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2007 SdHoareTripleChecker+Valid, 2003 SdHoareTripleChecker+Invalid, 2295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 956 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-20 07:20:28,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2007 Valid, 2003 Invalid, 2295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [956 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-20 07:20:28,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6022 states. [2021-11-20 07:20:29,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6022 to 5803. [2021-11-20 07:20:29,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5803 states, 4948 states have (on average 1.6321746160064672) internal successors, (8076), 5077 states have internal predecessors, (8076), 807 states have call successors, (807), 43 states have call predecessors, (807), 47 states have return successors, (814), 807 states have call predecessors, (814), 806 states have call successors, (814) [2021-11-20 07:20:29,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5803 states to 5803 states and 9697 transitions. [2021-11-20 07:20:29,284 INFO L78 Accepts]: Start accepts. Automaton has 5803 states and 9697 transitions. Word has length 189 [2021-11-20 07:20:29,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:20:29,285 INFO L470 AbstractCegarLoop]: Abstraction has 5803 states and 9697 transitions. [2021-11-20 07:20:29,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-20 07:20:29,285 INFO L276 IsEmpty]: Start isEmpty. Operand 5803 states and 9697 transitions. [2021-11-20 07:20:29,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-20 07:20:29,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:20:29,319 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:20:29,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 07:20:29,319 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:20:29,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:20:29,320 INFO L85 PathProgramCache]: Analyzing trace with hash -2001499176, now seen corresponding path program 1 times [2021-11-20 07:20:29,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:20:29,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426950841] [2021-11-20 07:20:29,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:20:29,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:20:29,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:29,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 07:20:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:29,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 07:20:29,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:29,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 07:20:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:29,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:20:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:29,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:20:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:29,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-20 07:20:29,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:29,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:20:29,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:29,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 07:20:29,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:29,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-20 07:20:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:29,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:29,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:20:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:29,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:29,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:29,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 07:20:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:29,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:29,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-20 07:20:29,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:29,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-20 07:20:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:29,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-20 07:20:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:29,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-20 07:20:29,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:29,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-20 07:20:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:29,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:20:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:29,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-20 07:20:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:29,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-20 07:20:29,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:29,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:20:29,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:29,475 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-20 07:20:29,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:20:29,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426950841] [2021-11-20 07:20:29,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426950841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:20:29,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:20:29,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:20:29,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172183311] [2021-11-20 07:20:29,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:20:29,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:20:29,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:20:29,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:20:29,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:20:29,478 INFO L87 Difference]: Start difference. First operand 5803 states and 9697 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-20 07:20:32,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:20:32,384 INFO L93 Difference]: Finished difference Result 14186 states and 23917 transitions. [2021-11-20 07:20:32,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 07:20:32,384 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 190 [2021-11-20 07:20:32,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:20:32,437 INFO L225 Difference]: With dead ends: 14186 [2021-11-20 07:20:32,438 INFO L226 Difference]: Without dead ends: 9397 [2021-11-20 07:20:32,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:20:32,456 INFO L933 BasicCegarLoop]: 929 mSDtfsCounter, 1577 mSDsluCounter, 1322 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 751 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 2251 SdHoareTripleChecker+Invalid, 2275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 751 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:20:32,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1603 Valid, 2251 Invalid, 2275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [751 Valid, 1524 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-20 07:20:32,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9397 states. [2021-11-20 07:20:32,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9397 to 9178. [2021-11-20 07:20:32,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9178 states, 7830 states have (on average 1.6339719029374202) internal successors, (12794), 8037 states have internal predecessors, (12794), 1300 states have call successors, (1300), 43 states have call predecessors, (1300), 47 states have return successors, (1307), 1300 states have call predecessors, (1307), 1299 states have call successors, (1307) [2021-11-20 07:20:33,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9178 states to 9178 states and 15401 transitions. [2021-11-20 07:20:33,038 INFO L78 Accepts]: Start accepts. Automaton has 9178 states and 15401 transitions. Word has length 190 [2021-11-20 07:20:33,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:20:33,039 INFO L470 AbstractCegarLoop]: Abstraction has 9178 states and 15401 transitions. [2021-11-20 07:20:33,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-20 07:20:33,041 INFO L276 IsEmpty]: Start isEmpty. Operand 9178 states and 15401 transitions. [2021-11-20 07:20:33,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-20 07:20:33,192 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:20:33,193 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:20:33,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 07:20:33,193 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:20:33,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:20:33,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1745672489, now seen corresponding path program 1 times [2021-11-20 07:20:33,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:20:33,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179313008] [2021-11-20 07:20:33,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:20:33,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:20:33,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:33,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 07:20:33,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:33,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 07:20:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:33,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 07:20:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:33,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:20:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:33,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:20:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:33,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-20 07:20:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:33,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:20:33,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:33,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 07:20:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:33,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-20 07:20:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:33,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:33,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:33,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:20:33,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:33,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:33,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 07:20:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:33,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:33,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-20 07:20:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:33,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-20 07:20:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:33,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-11-20 07:20:33,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:33,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-20 07:20:33,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:33,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-20 07:20:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:33,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:20:33,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:33,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-11-20 07:20:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:33,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-11-20 07:20:33,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:33,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:20:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:33,391 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-20 07:20:33,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:20:33,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179313008] [2021-11-20 07:20:33,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179313008] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:20:33,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:20:33,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:20:33,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046490951] [2021-11-20 07:20:33,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:20:33,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:20:33,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:20:33,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:20:33,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:20:33,395 INFO L87 Difference]: Start difference. First operand 9178 states and 15401 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-20 07:20:35,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:20:35,964 INFO L93 Difference]: Finished difference Result 23139 states and 39144 transitions. [2021-11-20 07:20:35,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 07:20:35,965 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 191 [2021-11-20 07:20:35,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:20:36,042 INFO L225 Difference]: With dead ends: 23139 [2021-11-20 07:20:36,043 INFO L226 Difference]: Without dead ends: 15471 [2021-11-20 07:20:36,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:20:36,074 INFO L933 BasicCegarLoop]: 918 mSDtfsCounter, 1998 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 978 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2025 SdHoareTripleChecker+Valid, 2001 SdHoareTripleChecker+Invalid, 2324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 978 IncrementalHoareTripleChecker+Valid, 1346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:20:36,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2025 Valid, 2001 Invalid, 2324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [978 Valid, 1346 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-20 07:20:36,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15471 states. [2021-11-20 07:20:37,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15471 to 15252. [2021-11-20 07:20:37,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15252 states, 13082 states have (on average 1.6372114355603118) internal successors, (21418), 13433 states have internal predecessors, (21418), 2122 states have call successors, (2122), 43 states have call predecessors, (2122), 47 states have return successors, (2129), 2122 states have call predecessors, (2129), 2121 states have call successors, (2129) [2021-11-20 07:20:37,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15252 states to 15252 states and 25669 transitions. [2021-11-20 07:20:37,090 INFO L78 Accepts]: Start accepts. Automaton has 15252 states and 25669 transitions. Word has length 191 [2021-11-20 07:20:37,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:20:37,091 INFO L470 AbstractCegarLoop]: Abstraction has 15252 states and 25669 transitions. [2021-11-20 07:20:37,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-20 07:20:37,092 INFO L276 IsEmpty]: Start isEmpty. Operand 15252 states and 25669 transitions. [2021-11-20 07:20:37,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-20 07:20:37,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:20:37,165 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:20:37,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 07:20:37,165 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:20:37,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:20:37,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1038022846, now seen corresponding path program 1 times [2021-11-20 07:20:37,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:20:37,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70715168] [2021-11-20 07:20:37,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:20:37,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:20:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:37,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 07:20:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:37,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 07:20:37,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:37,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 07:20:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:37,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:20:37,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:37,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:20:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:37,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-20 07:20:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:37,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:20:37,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:37,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 07:20:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:37,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-20 07:20:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:37,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:37,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:20:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:37,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:37,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 07:20:37,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:37,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:37,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:37,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-20 07:20:37,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:37,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 07:20:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:37,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-20 07:20:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:37,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-20 07:20:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:37,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-20 07:20:37,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:37,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-20 07:20:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:37,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:20:37,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:37,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-11-20 07:20:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:37,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:20:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:37,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-20 07:20:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:37,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-11-20 07:20:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:37,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:20:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:37,422 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-20 07:20:37,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:20:37,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70715168] [2021-11-20 07:20:37,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70715168] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:20:37,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:20:37,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:20:37,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123709512] [2021-11-20 07:20:37,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:20:37,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:20:37,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:20:37,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:20:37,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:20:37,426 INFO L87 Difference]: Start difference. First operand 15252 states and 25669 transitions. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-20 07:20:40,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:20:40,708 INFO L93 Difference]: Finished difference Result 36948 states and 62156 transitions. [2021-11-20 07:20:40,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 07:20:40,708 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 212 [2021-11-20 07:20:40,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:20:40,803 INFO L225 Difference]: With dead ends: 36948 [2021-11-20 07:20:40,804 INFO L226 Difference]: Without dead ends: 24340 [2021-11-20 07:20:40,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:20:40,840 INFO L933 BasicCegarLoop]: 906 mSDtfsCounter, 1997 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 959 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2024 SdHoareTripleChecker+Valid, 1953 SdHoareTripleChecker+Invalid, 2284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 959 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:20:40,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2024 Valid, 1953 Invalid, 2284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [959 Valid, 1325 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-20 07:20:40,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24340 states. [2021-11-20 07:20:42,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24340 to 24121. [2021-11-20 07:20:42,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24121 states, 20748 states have (on average 1.619770580296896) internal successors, (33607), 21373 states have internal predecessors, (33607), 3325 states have call successors, (3325), 43 states have call predecessors, (3325), 47 states have return successors, (3332), 3325 states have call predecessors, (3332), 3324 states have call successors, (3332) [2021-11-20 07:20:42,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24121 states to 24121 states and 40264 transitions. [2021-11-20 07:20:42,351 INFO L78 Accepts]: Start accepts. Automaton has 24121 states and 40264 transitions. Word has length 212 [2021-11-20 07:20:42,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:20:42,352 INFO L470 AbstractCegarLoop]: Abstraction has 24121 states and 40264 transitions. [2021-11-20 07:20:42,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (32), 6 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-20 07:20:42,353 INFO L276 IsEmpty]: Start isEmpty. Operand 24121 states and 40264 transitions. [2021-11-20 07:20:42,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-20 07:20:42,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:20:42,455 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:20:42,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 07:20:42,455 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:20:42,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:20:42,456 INFO L85 PathProgramCache]: Analyzing trace with hash 2051325121, now seen corresponding path program 1 times [2021-11-20 07:20:42,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:20:42,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340685307] [2021-11-20 07:20:42,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:20:42,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:20:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:42,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 07:20:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:42,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 07:20:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:42,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 07:20:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:42,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:20:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:42,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:20:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:42,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-20 07:20:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:42,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:20:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:42,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 07:20:42,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:42,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-20 07:20:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:42,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:42,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:42,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:20:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:42,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:42,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:42,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 07:20:42,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:42,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:42,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-20 07:20:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:42,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-20 07:20:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:42,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-20 07:20:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:42,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-11-20 07:20:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:42,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-20 07:20:42,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:42,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:20:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:42,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-11-20 07:20:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:42,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-11-20 07:20:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:42,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:20:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:42,701 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-20 07:20:42,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:20:42,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340685307] [2021-11-20 07:20:42,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340685307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:20:42,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:20:42,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:20:42,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487627052] [2021-11-20 07:20:42,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:20:42,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:20:42,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:20:42,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:20:42,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:20:42,706 INFO L87 Difference]: Start difference. First operand 24121 states and 40264 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-20 07:20:45,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:20:45,963 INFO L93 Difference]: Finished difference Result 63801 states and 106816 transitions. [2021-11-20 07:20:45,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 07:20:45,964 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 193 [2021-11-20 07:20:45,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:20:46,125 INFO L225 Difference]: With dead ends: 63801 [2021-11-20 07:20:46,125 INFO L226 Difference]: Without dead ends: 43136 [2021-11-20 07:20:46,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:20:46,173 INFO L933 BasicCegarLoop]: 924 mSDtfsCounter, 1985 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 955 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2012 SdHoareTripleChecker+Valid, 2022 SdHoareTripleChecker+Invalid, 2289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 955 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-20 07:20:46,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2012 Valid, 2022 Invalid, 2289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [955 Valid, 1334 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-20 07:20:46,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43136 states. [2021-11-20 07:20:48,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43136 to 42917. [2021-11-20 07:20:48,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42917 states, 37094 states have (on average 1.6154634172642477) internal successors, (59924), 37985 states have internal predecessors, (59924), 5775 states have call successors, (5775), 43 states have call predecessors, (5775), 47 states have return successors, (5782), 5775 states have call predecessors, (5782), 5774 states have call successors, (5782) [2021-11-20 07:20:48,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42917 states to 42917 states and 71481 transitions. [2021-11-20 07:20:48,784 INFO L78 Accepts]: Start accepts. Automaton has 42917 states and 71481 transitions. Word has length 193 [2021-11-20 07:20:48,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:20:48,784 INFO L470 AbstractCegarLoop]: Abstraction has 42917 states and 71481 transitions. [2021-11-20 07:20:48,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-20 07:20:48,785 INFO L276 IsEmpty]: Start isEmpty. Operand 42917 states and 71481 transitions. [2021-11-20 07:20:48,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-20 07:20:48,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:20:48,916 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:20:48,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-20 07:20:48,916 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:20:48,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:20:48,917 INFO L85 PathProgramCache]: Analyzing trace with hash 476937182, now seen corresponding path program 1 times [2021-11-20 07:20:48,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:20:48,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310714390] [2021-11-20 07:20:48,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:20:48,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:20:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:49,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 07:20:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:49,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 07:20:49,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:49,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 07:20:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:49,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:20:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:49,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:20:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:49,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-20 07:20:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:49,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:20:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:49,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 07:20:49,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:49,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-20 07:20:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:49,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:49,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:20:49,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:49,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:49,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 07:20:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:49,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:49,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-20 07:20:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:49,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-20 07:20:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:49,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-20 07:20:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:49,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-20 07:20:49,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:49,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-11-20 07:20:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:49,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:20:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:49,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-20 07:20:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:49,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-11-20 07:20:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:49,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:20:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:49,124 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-20 07:20:49,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:20:49,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310714390] [2021-11-20 07:20:49,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310714390] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:20:49,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:20:49,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:20:49,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658383184] [2021-11-20 07:20:49,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:20:49,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:20:49,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:20:49,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:20:49,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:20:49,128 INFO L87 Difference]: Start difference. First operand 42917 states and 71481 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-20 07:20:53,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:20:53,584 INFO L93 Difference]: Finished difference Result 116463 states and 194698 transitions. [2021-11-20 07:20:53,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 07:20:53,585 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 194 [2021-11-20 07:20:53,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:20:53,917 INFO L225 Difference]: With dead ends: 116463 [2021-11-20 07:20:53,917 INFO L226 Difference]: Without dead ends: 78178 [2021-11-20 07:20:54,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:20:54,178 INFO L933 BasicCegarLoop]: 921 mSDtfsCounter, 1552 mSDsluCounter, 1308 mSDsCounter, 0 mSdLazyCounter, 1501 mSolverCounterSat, 752 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1578 SdHoareTripleChecker+Valid, 2229 SdHoareTripleChecker+Invalid, 2253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 752 IncrementalHoareTripleChecker+Valid, 1501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:20:54,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1578 Valid, 2229 Invalid, 2253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [752 Valid, 1501 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-20 07:20:54,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78178 states. [2021-11-20 07:20:57,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78178 to 77959. [2021-11-20 07:20:57,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77959 states, 67623 states have (on average 1.6143176138296143) internal successors, (109165), 69303 states have internal predecessors, (109165), 10288 states have call successors, (10288), 43 states have call predecessors, (10288), 47 states have return successors, (10295), 10288 states have call predecessors, (10295), 10287 states have call successors, (10295) [2021-11-20 07:20:57,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77959 states to 77959 states and 129748 transitions. [2021-11-20 07:20:57,763 INFO L78 Accepts]: Start accepts. Automaton has 77959 states and 129748 transitions. Word has length 194 [2021-11-20 07:20:57,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:20:57,763 INFO L470 AbstractCegarLoop]: Abstraction has 77959 states and 129748 transitions. [2021-11-20 07:20:57,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-20 07:20:57,764 INFO L276 IsEmpty]: Start isEmpty. Operand 77959 states and 129748 transitions. [2021-11-20 07:20:58,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-20 07:20:58,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:20:58,217 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:20:58,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-20 07:20:58,218 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:20:58,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:20:58,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1201749051, now seen corresponding path program 1 times [2021-11-20 07:20:58,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:20:58,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211914979] [2021-11-20 07:20:58,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:20:58,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:20:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:58,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 07:20:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:58,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 07:20:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:58,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 07:20:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:58,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:20:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:58,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:20:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:58,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-20 07:20:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:58,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:20:58,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:58,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 07:20:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:58,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-20 07:20:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:58,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:58,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:20:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:58,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:58,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 07:20:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:58,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:20:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:58,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-20 07:20:58,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:58,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-20 07:20:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:58,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-20 07:20:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:58,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-20 07:20:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:58,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-11-20 07:20:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:58,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:20:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:58,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-20 07:20:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:58,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-20 07:20:58,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:58,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:20:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:58,445 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-20 07:20:58,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:20:58,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211914979] [2021-11-20 07:20:58,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211914979] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:20:58,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:20:58,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:20:58,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279701725] [2021-11-20 07:20:58,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:20:58,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:20:58,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:20:58,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:20:58,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:20:58,450 INFO L87 Difference]: Start difference. First operand 77959 states and 129748 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-20 07:21:04,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:04,713 INFO L93 Difference]: Finished difference Result 145928 states and 242853 transitions. [2021-11-20 07:21:04,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 07:21:04,714 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 195 [2021-11-20 07:21:04,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:05,280 INFO L225 Difference]: With dead ends: 145928 [2021-11-20 07:21:05,280 INFO L226 Difference]: Without dead ends: 145603 [2021-11-20 07:21:05,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:21:05,350 INFO L933 BasicCegarLoop]: 911 mSDtfsCounter, 1566 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 750 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1594 SdHoareTripleChecker+Valid, 2221 SdHoareTripleChecker+Invalid, 2275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 750 IncrementalHoareTripleChecker+Valid, 1525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:05,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1594 Valid, 2221 Invalid, 2275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [750 Valid, 1525 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-20 07:21:05,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145603 states. [2021-11-20 07:21:10,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145603 to 145384. [2021-11-20 07:21:11,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145384 states, 126680 states have (on average 1.6072544995263656) internal successors, (203607), 128883 states have internal predecessors, (203607), 18656 states have call successors, (18656), 43 states have call predecessors, (18656), 47 states have return successors, (18663), 18656 states have call predecessors, (18663), 18655 states have call successors, (18663) [2021-11-20 07:21:11,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145384 states to 145384 states and 240926 transitions. [2021-11-20 07:21:11,995 INFO L78 Accepts]: Start accepts. Automaton has 145384 states and 240926 transitions. Word has length 195 [2021-11-20 07:21:11,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:11,996 INFO L470 AbstractCegarLoop]: Abstraction has 145384 states and 240926 transitions. [2021-11-20 07:21:11,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (30), 6 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-20 07:21:11,996 INFO L276 IsEmpty]: Start isEmpty. Operand 145384 states and 240926 transitions. [2021-11-20 07:21:12,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-20 07:21:12,231 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:12,231 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:21:12,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-20 07:21:12,232 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:21:12,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:12,233 INFO L85 PathProgramCache]: Analyzing trace with hash -284640282, now seen corresponding path program 1 times [2021-11-20 07:21:12,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:21:12,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280648555] [2021-11-20 07:21:12,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:12,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:21:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:12,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 07:21:12,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:12,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 07:21:12,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:12,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 07:21:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:12,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:21:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:12,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 07:21:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:12,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-20 07:21:12,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:12,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:21:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:12,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 07:21:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:12,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-20 07:21:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:12,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:21:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:12,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:21:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:12,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:21:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:12,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 07:21:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:12,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:21:12,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:12,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-20 07:21:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:12,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-20 07:21:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:12,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-20 07:21:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:12,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-11-20 07:21:12,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:12,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-20 07:21:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:12,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:21:12,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:12,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-20 07:21:12,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:12,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-11-20 07:21:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:12,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:21:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:12,801 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-20 07:21:12,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:21:12,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280648555] [2021-11-20 07:21:12,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280648555] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:21:12,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566906513] [2021-11-20 07:21:12,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:12,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:21:12,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a282a94-fc95-45b3-8460-08669a4476f2/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:21:12,804 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a282a94-fc95-45b3-8460-08669a4476f2/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:21:12,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a282a94-fc95-45b3-8460-08669a4476f2/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 07:21:13,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:13,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 1581 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-20 07:21:13,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:21:14,017 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-11-20 07:21:14,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:21:14,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566906513] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:21:14,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:21:14,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [26] total 41 [2021-11-20 07:21:14,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403188342] [2021-11-20 07:21:14,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:14,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 07:21:14,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:21:14,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 07:21:14,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1542, Unknown=0, NotChecked=0, Total=1640 [2021-11-20 07:21:14,021 INFO L87 Difference]: Start difference. First operand 145384 states and 240926 transitions. Second operand has 17 states, 16 states have (on average 7.875) internal successors, (126), 13 states have internal predecessors, (126), 8 states have call successors, (30), 7 states have call predecessors, (30), 6 states have return successors, (23), 7 states have call predecessors, (23), 6 states have call successors, (23) [2021-11-20 07:21:20,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:20,264 INFO L93 Difference]: Finished difference Result 146210 states and 242130 transitions. [2021-11-20 07:21:20,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-20 07:21:20,265 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 7.875) internal successors, (126), 13 states have internal predecessors, (126), 8 states have call successors, (30), 7 states have call predecessors, (30), 6 states have return successors, (23), 7 states have call predecessors, (23), 6 states have call successors, (23) Word has length 196 [2021-11-20 07:21:20,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:20,898 INFO L225 Difference]: With dead ends: 146210 [2021-11-20 07:21:20,898 INFO L226 Difference]: Without dead ends: 145893 [2021-11-20 07:21:20,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=341, Invalid=3691, Unknown=0, NotChecked=0, Total=4032 [2021-11-20 07:21:20,964 INFO L933 BasicCegarLoop]: 1004 mSDtfsCounter, 1770 mSDsluCounter, 13259 mSDsCounter, 0 mSdLazyCounter, 1355 mSolverCounterSat, 474 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1780 SdHoareTripleChecker+Valid, 14263 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 474 IncrementalHoareTripleChecker+Valid, 1355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:20,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1780 Valid, 14263 Invalid, 1829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [474 Valid, 1355 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-20 07:21:21,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145893 states.